feat: Complete internationalization and code cleanup

## Translation Files
- Add 11 new language files (es, de, pt, ru, zh, ja, ko, ar, hi, nl, pl)
- Add 100+ missing translation keys across all 15 languages
- New sections: notebook, pagination, ai.batchOrganization, ai.autoLabels
- Update nav section with workspace, quickAccess, myLibrary keys

## Component Updates
- Update 15+ components to use translation keys instead of hardcoded text
- Components: notebook dialogs, sidebar, header, note-input, ghost-tags, etc.
- Replace 80+ hardcoded English/French strings with t() calls
- Ensure consistent UI across all supported languages

## Code Quality
- Remove 77+ console.log statements from codebase
- Clean up API routes, components, hooks, and services
- Keep only essential error handling (no debugging logs)

## UI/UX Improvements
- Update Keep logo to yellow post-it style (from-yellow-400 to-amber-500)
- Change selection colors to #FEF3C6 (notebooks) and #EFB162 (nav items)
- Make "+" button permanently visible in notebooks section
- Fix grammar and syntax errors in multiple components

## Bug Fixes
- Fix JSON syntax errors in it.json, nl.json, pl.json, zh.json
- Fix syntax errors in notebook-suggestion-toast.tsx
- Fix syntax errors in use-auto-tagging.ts
- Fix syntax errors in paragraph-refactor.service.ts
- Fix duplicate "fusion" section in nl.json

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Ou une version plus courte si vous préférez :

feat(i18n): Add 15 languages, remove logs, update UI components

- Create 11 new translation files (es, de, pt, ru, zh, ja, ko, ar, hi, nl, pl)
- Add 100+ translation keys: notebook, pagination, AI features
- Update 15+ components to use translations (80+ strings)
- Remove 77+ console.log statements from codebase
- Fix JSON syntax errors in 4 translation files
- Fix component syntax errors (toast, hooks, services)
- Update logo to yellow post-it style
- Change selection colors (#FEF3C6, #EFB162)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
2026-01-11 22:26:13 +01:00
parent fc2c40249e
commit 7fb486c9a4
183 changed files with 48288 additions and 1290 deletions

View File

@@ -20,7 +20,6 @@ function createOpenAIProvider(config: Record<string, string>, modelName: string,
const apiKey = config?.OPENAI_API_KEY || process.env.OPENAI_API_KEY || '';
if (!apiKey) {
console.warn('OPENAI_API_KEY non configurée.');
}
return new OpenAIProvider(apiKey, modelName, embeddingModelName);
@@ -31,11 +30,9 @@ function createCustomOpenAIProvider(config: Record<string, string>, modelName: s
const baseUrl = config?.CUSTOM_OPENAI_BASE_URL || process.env.CUSTOM_OPENAI_BASE_URL || '';
if (!apiKey) {
console.warn('CUSTOM_OPENAI_API_KEY non configurée.');
}
if (!baseUrl) {
console.warn('CUSTOM_OPENAI_BASE_URL non configurée.');
}
return new CustomOpenAIProvider(apiKey, baseUrl, modelName, embeddingModelName);
@@ -50,7 +47,6 @@ function getProviderInstance(providerType: ProviderType, config: Record<string,
case 'custom':
return createCustomOpenAIProvider(config, modelName, embeddingModelName);
default:
console.warn(`Provider AI inconnu: ${providerType}, utilisation de Ollama par défaut`);
return createOllamaProvider(config, modelName, embeddingModelName);
}
}

View File

@@ -1,7 +1,7 @@
import { createOpenAI } from '@ai-sdk/openai';
import { generateObject, embed } from 'ai';
import { generateObject, generateText, embed } from 'ai';
import { z } from 'zod';
import { AIProvider, TagSuggestion } from '../types';
import { AIProvider, TagSuggestion, TitleSuggestion } from '../types';
export class CustomOpenAIProvider implements AIProvider {
private model: any;
@@ -56,4 +56,38 @@ export class CustomOpenAIProvider implements AIProvider {
return [];
}
}
async generateTitles(prompt: string): Promise<TitleSuggestion[]> {
try {
const { object } = await generateObject({
model: this.model,
schema: z.object({
titles: z.array(z.object({
title: z.string().describe('Le titre suggéré'),
confidence: z.number().min(0).max(1).describe('Le niveau de confiance entre 0 et 1')
}))
}),
prompt: prompt,
});
return object.titles;
} catch (e) {
console.error('Erreur génération titres Custom OpenAI:', e);
return [];
}
}
async generateText(prompt: string): Promise<string> {
try {
const { text } = await generateText({
model: this.model,
prompt: prompt,
});
return text.trim();
} catch (e) {
console.error('Erreur génération texte Custom OpenAI:', e);
throw e;
}
}
}

View File

@@ -1,7 +1,7 @@
import { createOpenAI } from '@ai-sdk/openai';
import { generateObject, embed } from 'ai';
import { generateObject, generateText, embed } from 'ai';
import { z } from 'zod';
import { AIProvider, TagSuggestion } from '../types';
import { AIProvider, TagSuggestion, TitleSuggestion } from '../types';
export class DeepSeekProvider implements AIProvider {
private model: any;
@@ -51,4 +51,38 @@ export class DeepSeekProvider implements AIProvider {
return [];
}
}
async generateTitles(prompt: string): Promise<TitleSuggestion[]> {
try {
const { object } = await generateObject({
model: this.model,
schema: z.object({
titles: z.array(z.object({
title: z.string().describe('Le titre suggéré'),
confidence: z.number().min(0).max(1).describe('Le niveau de confiance entre 0 et 1')
}))
}),
prompt: prompt,
});
return object.titles;
} catch (e) {
console.error('Erreur génération titres DeepSeek:', e);
return [];
}
}
async generateText(prompt: string): Promise<string> {
try {
const { text } = await generateText({
model: this.model,
prompt: prompt,
});
return text.trim();
} catch (e) {
console.error('Erreur génération texte DeepSeek:', e);
throw e;
}
}
}

View File

@@ -1,4 +1,4 @@
import { AIProvider, TagSuggestion } from '../types';
import { AIProvider, TagSuggestion, TitleSuggestion } from '../types';
export class OllamaProvider implements AIProvider {
private baseUrl: string;
@@ -77,4 +77,58 @@ export class OllamaProvider implements AIProvider {
return [];
}
}
async generateTitles(prompt: string): Promise<TitleSuggestion[]> {
try {
const response = await fetch(`${this.baseUrl}/generate`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
model: this.modelName,
prompt: `${prompt}
Réponds UNIQUEMENT sous forme de tableau JSON : [{"title": "string", "confidence": number}]`,
stream: false,
}),
});
if (!response.ok) throw new Error(`Ollama error: ${response.statusText}`);
const data = await response.json();
const text = data.response;
// Extraire le JSON de la réponse
const jsonMatch = text.match(/\[\s*\{[\s\S]*\}\s*\]/);
if (jsonMatch) {
return JSON.parse(jsonMatch[0]);
}
return [];
} catch (e) {
console.error('Erreur génération titres Ollama:', e);
return [];
}
}
async generateText(prompt: string): Promise<string> {
try {
const response = await fetch(`${this.baseUrl}/generate`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
model: this.modelName,
prompt: prompt,
stream: false,
}),
});
if (!response.ok) throw new Error(`Ollama error: ${response.statusText}`);
const data = await response.json();
return data.response.trim();
} catch (e) {
console.error('Erreur génération texte Ollama:', e);
throw e;
}
}
}

View File

@@ -1,7 +1,7 @@
import { createOpenAI } from '@ai-sdk/openai';
import { generateObject, embed } from 'ai';
import { generateObject, generateText, embed } from 'ai';
import { z } from 'zod';
import { AIProvider, TagSuggestion } from '../types';
import { AIProvider, TagSuggestion, TitleSuggestion } from '../types';
export class OpenAIProvider implements AIProvider {
private model: any;
@@ -50,4 +50,38 @@ export class OpenAIProvider implements AIProvider {
return [];
}
}
async generateTitles(prompt: string): Promise<TitleSuggestion[]> {
try {
const { object } = await generateObject({
model: this.model,
schema: z.object({
titles: z.array(z.object({
title: z.string().describe('Le titre suggéré'),
confidence: z.number().min(0).max(1).describe('Le niveau de confiance entre 0 et 1')
}))
}),
prompt: prompt,
});
return object.titles;
} catch (e) {
console.error('Erreur génération titres OpenAI:', e);
return [];
}
}
async generateText(prompt: string): Promise<string> {
try {
const { text } = await generateText({
model: this.model,
prompt: prompt,
});
return text.trim();
} catch (e) {
console.error('Erreur génération texte OpenAI:', e);
throw e;
}
}
}

View File

@@ -1,7 +1,7 @@
import { createOpenAI } from '@ai-sdk/openai';
import { generateObject, embed } from 'ai';
import { generateObject, generateText, embed } from 'ai';
import { z } from 'zod';
import { AIProvider, TagSuggestion } from '../types';
import { AIProvider, TagSuggestion, TitleSuggestion } from '../types';
export class OpenRouterProvider implements AIProvider {
private model: any;
@@ -51,4 +51,38 @@ export class OpenRouterProvider implements AIProvider {
return [];
}
}
async generateTitles(prompt: string): Promise<TitleSuggestion[]> {
try {
const { object } = await generateObject({
model: this.model,
schema: z.object({
titles: z.array(z.object({
title: z.string().describe('Le titre suggéré'),
confidence: z.number().min(0).max(1).describe('Le niveau de confiance entre 0 et 1')
}))
}),
prompt: prompt,
});
return object.titles;
} catch (e) {
console.error('Erreur génération titres OpenRouter:', e);
return [];
}
}
async generateText(prompt: string): Promise<string> {
try {
const { text } = await generateText({
model: this.model,
prompt: prompt,
});
return text.trim();
} catch (e) {
console.error('Erreur génération texte OpenRouter:', e);
throw e;
}
}
}

View File

@@ -0,0 +1,293 @@
import { prisma } from '@/lib/prisma'
import { getAIProvider } from '@/lib/ai/factory'
export interface SuggestedLabel {
name: string
count: number
confidence: number
noteIds: string[]
}
export interface AutoLabelSuggestion {
notebookId: string
notebookName: string
notebookIcon: string | null
suggestedLabels: SuggestedLabel[]
totalNotes: number
}
/**
* Service for automatically suggesting new labels based on recurring themes
* (Story 5.4 - IA4)
*/
export class AutoLabelCreationService {
/**
* Analyze a notebook and suggest new labels based on recurring themes
* @param notebookId - Notebook ID to analyze
* @param userId - User ID (for authorization)
* @returns Suggested labels or null if not enough notes/no patterns found
*/
async suggestLabels(notebookId: string, userId: string): Promise<AutoLabelSuggestion | null> {
// 1. Get notebook with existing labels
const notebook = await prisma.notebook.findFirst({
where: {
id: notebookId,
userId,
},
include: {
labels: {
select: {
id: true,
name: true,
},
},
_count: {
select: { notes: true },
},
},
})
if (!notebook) {
throw new Error('Notebook not found')
}
// Only trigger if notebook has 15+ notes (PRD requirement)
if (notebook._count.notes < 15) {
return null
}
// Get all notes in this notebook
const notes = await prisma.note.findMany({
where: {
notebookId,
userId,
},
select: {
id: true,
title: true,
content: true,
labelRelations: {
select: {
name: true,
},
},
},
orderBy: {
updatedAt: 'desc',
},
take: 100, // Limit to 100 most recent notes
})
if (notes.length === 0) {
return null
}
// 2. Use AI to detect recurring themes
const suggestions = await this.detectRecurringThemes(notes, notebook)
return suggestions
}
/**
* Use AI to detect recurring themes and suggest labels
*/
private async detectRecurringThemes(
notes: any[],
notebook: any
): Promise<AutoLabelSuggestion | null> {
const existingLabelNames = new Set<string>(
notebook.labels.map((l: any) => l.name.toLowerCase())
)
const prompt = this.buildPrompt(notes, existingLabelNames)
try {
const provider = getAIProvider()
const response = await provider.generateText(prompt)
// Parse AI response
const suggestions = this.parseAIResponse(response, notes)
if (!suggestions || suggestions.suggestedLabels.length === 0) {
return null
}
return {
notebookId: notebook.id,
notebookName: notebook.name,
notebookIcon: notebook.icon,
suggestedLabels: suggestions.suggestedLabels,
totalNotes: notebook._count.notes,
}
} catch (error) {
console.error('Failed to detect recurring themes:', error)
return null
}
}
/**
* Build prompt for AI (always in French - interface language)
*/
private buildPrompt(notes: any[], existingLabelNames: Set<string>): string {
const notesSummary = notes
.map((note, index) => {
const title = note.title || 'Sans titre'
const content = note.content.substring(0, 150)
return `[${index}] "${title}": ${content}`
})
.join('\n')
const existingLabels = Array.from(existingLabelNames).join(', ')
return `
Tu es un assistant qui détecte les thèmes récurrents dans des notes pour suggérer de nouvelles étiquettes.
CARNET ANALYSÉ :
${notes.length} notes
ÉTIQUETTES EXISTANTES (ne pas suggérer celles-ci) :
${existingLabels || 'Aucune'}
NOTES DU CARNET :
${notesSummary}
TÂCHE :
Analyse les notes et détecte les thèmes récurrents (mots-clés, sujets, lieux, personnes).
Un thème doit apparaître dans au moins 5 notes différentes pour être suggéré.
FORMAT DE RÉPONSE (JSON) :
{
"labels": [
{
"nom": "nom_du_label",
"note_indices": [0, 5, 12, 23, 45],
"confiance": 0.85
}
]
}
RÈGLES :
- Le nom du label doit être court (1-2 mots max)
- Un thème doit apparaître dans 5+ notes pour être suggéré
- La confiance doit être > 0.60
- Ne pas suggérer des étiquettes qui existent déjà
- Priorise les lieux, personnes, catégories claires
- Maximum 5 suggestions
Exemples de bonnes étiquettes :
- "tokyo", "kyoto", "osaka" (lieux)
- "hôtels", "restos", "vols" (catégories)
- "marie", "jean", "équipe" (personnes)
Ta réponse (JSON seulement) :
`.trim()
}
/**
* Parse AI response into suggested labels
*/
private parseAIResponse(response: string, notes: any[]): { suggestedLabels: SuggestedLabel[] } | null {
try {
const jsonMatch = response.match(/\{[\s\S]*\}/)
if (!jsonMatch) {
throw new Error('No JSON found in response')
}
const aiData = JSON.parse(jsonMatch[0])
const suggestedLabels: SuggestedLabel[] = (aiData.labels || [])
.map((label: any) => {
// Filter by confidence threshold
if (label.confiance <= 0.60) return null
// Get note IDs from indices
const noteIds = label.note_indices
.map((idx: number) => notes[idx]?.id)
.filter(Boolean)
// Must have at least 5 notes
if (noteIds.length < 5) return null
return {
name: label.nom,
count: noteIds.length,
confidence: label.confiance,
noteIds,
}
})
.filter(Boolean)
if (suggestedLabels.length === 0) {
return null
}
// Sort by count (descending) and confidence
suggestedLabels.sort((a, b) => {
if (b.count !== a.count) {
return b.count - a.count // More notes first
}
return b.confidence - a.confidence // Then higher confidence
})
// Limit to top 5
return {
suggestedLabels: suggestedLabels.slice(0, 5),
}
} catch (error) {
console.error('Failed to parse AI response:', error)
return null
}
}
/**
* Create suggested labels and assign them to notes
* @param notebookId - Notebook ID
* @param userId - User ID
* @param suggestions - Suggested labels to create
* @param selectedLabels - Labels user selected to create
* @returns Number of labels created
*/
async createLabels(
notebookId: string,
userId: string,
suggestions: AutoLabelSuggestion,
selectedLabels: string[]
): Promise<number> {
let createdCount = 0
for (const suggestedLabel of suggestions.suggestedLabels) {
if (!selectedLabels.includes(suggestedLabel.name)) continue
// Create the label
const label = await prisma.label.create({
data: {
name: suggestedLabel.name,
color: 'gray', // Default color, user can change later
notebookId,
userId,
},
})
// Assign label to all suggested notes (updateMany doesn't support relations)
for (const noteId of suggestedLabel.noteIds) {
await prisma.note.update({
where: { id: noteId },
data: {
labelRelations: {
connect: {
id: label.id,
},
},
},
})
}
createdCount++
}
return createdCount
}
}
// Export singleton instance
export const autoLabelCreationService = new AutoLabelCreationService()

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@@ -0,0 +1,305 @@
import { prisma } from '@/lib/prisma'
import { getAIProvider } from '@/lib/ai/factory'
export interface NoteForOrganization {
id: string
title: string | null
content: string
}
export interface NotebookOrganization {
notebookId: string
notebookName: string
notebookIcon: string | null
notebookColor: string | null
notes: Array<{
noteId: string
title: string | null
content: string
confidence: number
reason: string
}>
}
export interface OrganizationPlan {
notebooks: NotebookOrganization[]
totalNotes: number
unorganizedNotes: number // Notes that couldn't be categorized
}
/**
* Service for batch organizing notes from "Notes générales" into notebooks
* (Story 5.3 - IA3)
*/
export class BatchOrganizationService {
/**
* Analyze all notes in "Notes générales" and create an organization plan
* @param userId - User ID
* @returns Organization plan with notebook assignments
*/
async createOrganizationPlan(userId: string): Promise<OrganizationPlan> {
// 1. Get all notes without notebook (Inbox/Notes générales)
const notesWithoutNotebook = await prisma.note.findMany({
where: {
userId,
notebookId: null,
},
select: {
id: true,
title: true,
content: true,
},
orderBy: {
updatedAt: 'desc',
},
take: 50, // Limit to 50 notes for AI processing
})
if (notesWithoutNotebook.length === 0) {
return {
notebooks: [],
totalNotes: 0,
unorganizedNotes: 0,
}
}
// 2. Get all user's notebooks
const notebooks = await prisma.notebook.findMany({
where: { userId },
include: {
labels: true,
_count: {
select: { notes: true },
},
},
orderBy: { order: 'asc' },
})
if (notebooks.length === 0) {
// No notebooks to organize into
return {
notebooks: [],
totalNotes: notesWithoutNotebook.length,
unorganizedNotes: notesWithoutNotebook.length,
}
}
// 3. Call AI to create organization plan
const plan = await this.aiOrganizeNotes(notesWithoutNotebook, notebooks)
return plan
}
/**
* Use AI to analyze notes and create organization plan
*/
private async aiOrganizeNotes(
notes: NoteForOrganization[],
notebooks: any[]
): Promise<OrganizationPlan> {
const prompt = this.buildPrompt(notes, notebooks)
try {
const provider = getAIProvider()
const response = await provider.generateText(prompt)
// Parse AI response
const plan = this.parseAIResponse(response, notes, notebooks)
return plan
} catch (error) {
console.error('Failed to create organization plan:', error)
// Return empty plan on error
return {
notebooks: [],
totalNotes: notes.length,
unorganizedNotes: notes.length,
}
}
}
/**
* Build prompt for AI (always in French - interface language)
*/
private buildPrompt(notes: NoteForOrganization[], notebooks: any[]): string {
const notebookList = notebooks
.map(nb => {
const labels = nb.labels.map((l: any) => l.name).join(', ')
const count = nb._count?.notes || 0
return `- ${nb.name} (${count} notes)${labels ? ` [labels: ${labels}]` : ''}`
})
.join('\n')
const notesList = notes
.map((note, index) => {
const title = note.title || 'Sans titre'
const content = note.content.substring(0, 200)
return `[${index}] "${title}": ${content}`
})
.join('\n')
return `
Tu es un assistant qui organise des notes en les regroupant par thématique dans des carnets.
CARNETS DISPONIBLES :
${notebookList}
NOTES À ORGANISER (Notes générales) :
${notesList}
TÂCHE :
Analyse chaque note et propose le carnet le PLUS approprié.
Considère :
1. Le sujet/thème de la note (LE PLUS IMPORTANT)
2. Les labels existants dans chaque carnet
3. La cohérence thématique entre notes du même carnet
GUIDES DE CLASSIFICATION :
- SPORT/EXERCICE/ACHATS/COURSSES → Carnet Personnel
- LOISIRS/PASSIONS/SORTIES → Carnet Personnel
- SANTÉ/FITNESS/MÉDECIN → Carnet Personnel ou Santé
- FAMILLE/AMIS → Carnet Personnel
- TRAVAIL/RÉUNIONS/PROJETS/CLIENTS → Carnet Travail
- CODING/TECH/DÉVELOPPEMENT → Carnet Travail ou Code
- FINANCES/FACTURES/BANQUE → Carnet Personnel ou Finances
FORMAT DE RÉPONSE (JSON) :
Pour chaque carnet, liste les notes qui lui appartiennent :
{
"carnets": [
{
"nom": "Nom du carnet",
"notes": [
{
"index": 0,
"confiance": 0.95,
"raison": "Courte explication"
}
]
}
]
}
RÈGLES :
- Seules les notes avec confiance > 0.60 doivent être assignées
- Si une note est trop générique, ne l'assigne pas
- Sois précis dans tes regroupements thématiques
Ta réponse (JSON seulement) :
`.trim()
}
/**
* Parse AI response into OrganizationPlan
*/
private parseAIResponse(
response: string,
notes: NoteForOrganization[],
notebooks: any[]
): OrganizationPlan {
try {
// Try to parse JSON response
const jsonMatch = response.match(/\{[\s\S]*\}/)
if (!jsonMatch) {
throw new Error('No JSON found in response')
}
const aiData = JSON.parse(jsonMatch[0])
const notebookOrganizations: NotebookOrganization[] = []
// Process each notebook in AI response
for (const aiNotebook of aiData.carnets || []) {
const notebook = notebooks.find(nb => nb.name === aiNotebook.nom)
if (!notebook) continue
const noteAssignments = aiNotebook.notes
.filter((n: any) => n.confiance > 0.60) // Only high confidence
.map((n: any) => {
const note = notes[n.index]
if (!note) return null
return {
noteId: note.id,
title: note.title,
content: note.content,
confidence: n.confiance,
reason: n.raison || '',
}
})
.filter(Boolean)
if (noteAssignments.length > 0) {
notebookOrganizations.push({
notebookId: notebook.id,
notebookName: notebook.name,
notebookIcon: notebook.icon,
notebookColor: notebook.color,
notes: noteAssignments,
})
}
}
// Count unorganized notes
const organizedNoteIds = new Set(
notebookOrganizations.flatMap(nb => nb.notes.map(n => n.noteId))
)
const unorganizedCount = notes.length - organizedNoteIds.size
return {
notebooks: notebookOrganizations,
totalNotes: notes.length,
unorganizedNotes: unorganizedCount,
}
} catch (error) {
console.error('Failed to parse AI response:', error)
return {
notebooks: [],
totalNotes: notes.length,
unorganizedNotes: notes.length,
}
}
}
/**
* Apply the organization plan (move notes to notebooks)
* @param userId - User ID
* @param plan - Organization plan to apply
* @param selectedNoteIds - Specific note IDs to organize (user can deselect)
* @returns Number of notes moved
*/
async applyOrganizationPlan(
userId: string,
plan: OrganizationPlan,
selectedNoteIds: string[]
): Promise<number> {
let movedCount = 0
for (const notebookOrg of plan.notebooks) {
// Filter notes that are selected
const notesToMove = notebookOrg.notes.filter(n =>
selectedNoteIds.includes(n.noteId)
)
if (notesToMove.length === 0) continue
// Move notes to notebook
await prisma.note.updateMany({
where: {
id: { in: notesToMove.map(n => n.noteId) },
userId,
},
data: {
notebookId: notebookOrg.notebookId,
},
})
movedCount += notesToMove.length
}
return movedCount
}
}
// Export singleton instance
export const batchOrganizationService = new BatchOrganizationService()

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@@ -0,0 +1,311 @@
/**
* Contextual Auto-Tagging Service (IA2)
* Suggests labels from the current notebook's existing labels
* OR creates new label suggestions for empty notebooks
*/
import { prisma } from '@/lib/prisma'
import { getAIProvider } from '@/lib/ai/factory'
export interface LabelSuggestion {
label: string
confidence: number // 0-100
reasoning?: string
isNewLabel?: boolean // true if this is a suggestion to CREATE a new label
}
export class ContextualAutoTagService {
/**
* Suggest labels for a note
* @param noteContent - Content of the note
* @param notebookId - ID of the notebook (to get available labels)
* @param userId - User ID
* @returns Array of label suggestions (max 3)
*/
async suggestLabels(
noteContent: string,
notebookId: string | null,
userId: string
): Promise<LabelSuggestion[]> {
// If no notebook, return empty (no context)
if (!notebookId) {
return []
}
// Get notebook with its labels
const notebook = await prisma.notebook.findFirst({
where: {
id: notebookId,
userId,
},
include: {
labels: {
orderBy: {
name: 'asc',
},
},
},
})
if (!notebook) {
return []
}
// CASE 1: Notebook has existing labels → suggest from them (IA2)
if (notebook.labels.length > 0) {
return await this.suggestFromExistingLabels(noteContent, notebook)
}
// CASE 2: Notebook has NO labels → suggest NEW labels to create
return await this.suggestNewLabels(noteContent, notebook)
}
/**
* Suggest labels from existing labels in the notebook (IA2)
*/
private async suggestFromExistingLabels(
noteContent: string,
notebook: any
): Promise<LabelSuggestion[]> {
const availableLabels = notebook.labels.map((l: any) => l.name)
// Build prompt with available labels
const prompt = this.buildPrompt(noteContent, notebook.name, availableLabels)
try {
const provider = getAIProvider()
// Use generateText with JSON response
const response = await provider.generateText(prompt)
// Improved JSON parsing with multiple fallback strategies
let parsed: any
// Strategy 1: Direct parse
try {
parsed = JSON.parse(response)
} catch (e) {
// Strategy 2: Extract JSON from markdown code blocks
const codeBlockMatch = response.match(/```(?:json)?\s*(\{[\s\S]*?\}|\[[\s\S]*?\])\s*```/)
if (codeBlockMatch) {
parsed = JSON.parse(codeBlockMatch[1])
} else {
// Strategy 3: Extract JSON object or array
const jsonArrayMatch = response.match(/\[[\s\S]*\]/)
const jsonObjectMatch = response.match(/\{[\s\S]*\}/)
if (jsonArrayMatch) {
let cleanedJson = jsonArrayMatch[0]
cleanedJson = cleanedJson.replace(/,\s*([}\]])/g, '$1')
cleanedJson = cleanedJson.replace(/([{,]\s*)([a-zA-Z_][a-zA-Z0-9_]*)\s*:/g, '$1"$2":')
parsed = JSON.parse(cleanedJson)
} else if (jsonObjectMatch) {
let cleanedJson = jsonObjectMatch[0]
cleanedJson = cleanedJson.replace(/,\s*([}\]])/g, '$1')
cleanedJson = cleanedJson.replace(/([{,]\s*)([a-zA-Z_][a-zA-Z0-9_]*)\s*:/g, '$1"$2":')
parsed = JSON.parse(cleanedJson)
} else {
console.error('❌ Could not extract JSON from response')
return []
}
}
}
// Handle both formats: array directly OR {suggestions: array}
let suggestionsArray = parsed
if (parsed.suggestions && Array.isArray(parsed.suggestions)) {
suggestionsArray = parsed.suggestions
} else if (Array.isArray(parsed)) {
suggestionsArray = parsed
} else {
console.error('❌ Invalid response structure:', parsed)
return []
}
// Filter and map suggestions
const suggestions = suggestionsArray
.filter((s: any) => {
// Must be in available labels
return availableLabels.includes(s.label) && s.confidence > 0.6
})
.map((s: any) => ({
label: s.label,
confidence: Math.round(s.confidence * 100),
reasoning: s.reasoning || '',
isNewLabel: false,
}))
.sort((a: any, b: any) => b.confidence - a.confidence)
.slice(0, 3) // Max 3 suggestions
return suggestions as LabelSuggestion[]
} catch (error) {
console.error('Failed to suggest labels:', error)
return []
}
}
/**
* Suggest NEW labels to create for empty notebooks (Hybrid IA2+IA4)
*/
private async suggestNewLabels(
noteContent: string,
notebook: any
): Promise<LabelSuggestion[]> {
// Build prompt to suggest NEW labels based on content
const prompt = this.buildNewLabelsPrompt(noteContent, notebook.name)
try {
const provider = getAIProvider()
// Use generateText with JSON response
const response = await provider.generateText(prompt)
// Improved JSON parsing with multiple fallback strategies
let parsed: any
// Strategy 1: Direct parse
try {
parsed = JSON.parse(response)
} catch (e) {
// Strategy 2: Extract JSON from markdown code blocks
const codeBlockMatch = response.match(/```(?:json)?\s*(\{[\s\S]*?\}|\[[\s\S]*?\])\s*```/)
if (codeBlockMatch) {
parsed = JSON.parse(codeBlockMatch[1])
} else {
// Strategy 3: Extract JSON object or array
const jsonArrayMatch = response.match(/\[[\s\S]*\]/)
const jsonObjectMatch = response.match(/\{[\s\S]*\}/)
if (jsonArrayMatch) {
let cleanedJson = jsonArrayMatch[0]
cleanedJson = cleanedJson.replace(/,\s*([}\]])/g, '$1')
cleanedJson = cleanedJson.replace(/([{,]\s*)([a-zA-Z_][a-zA-Z0-9_]*)\s*:/g, '$1"$2":')
parsed = JSON.parse(cleanedJson)
} else if (jsonObjectMatch) {
let cleanedJson = jsonObjectMatch[0]
cleanedJson = cleanedJson.replace(/,\s*([}\]])/g, '$1')
cleanedJson = cleanedJson.replace(/([{,]\s*)([a-zA-Z_][a-zA-Z0-9_]*)\s*:/g, '$1"$2":')
parsed = JSON.parse(cleanedJson)
} else {
console.error('❌ Could not extract JSON from response')
return []
}
}
}
// Handle both formats: array directly OR {suggestions: array}
let suggestionsArray = parsed
if (parsed.suggestions && Array.isArray(parsed.suggestions)) {
suggestionsArray = parsed.suggestions
} else if (Array.isArray(parsed)) {
suggestionsArray = parsed
} else {
console.error('❌ Invalid response structure:', parsed)
return []
}
// Filter and map suggestions
const suggestions = suggestionsArray
.filter((s: any) => {
return s.label && s.label.length > 0 && s.confidence > 0.6
})
.map((s: any) => ({
label: s.label,
confidence: Math.round(s.confidence * 100),
reasoning: s.reasoning || '',
isNewLabel: true, // Mark as new label suggestion
}))
.sort((a: any, b: any) => b.confidence - a.confidence)
.slice(0, 3) // Max 3 suggestions
return suggestions as LabelSuggestion[]
} catch (error) {
console.error('❌ Failed to suggest new labels:', error)
return []
}
}
/**
* Build the AI prompt for contextual label suggestion
*/
private buildPrompt(noteContent: string, notebookName: string, availableLabels: string[]): string {
const labelList = availableLabels.map(l => `- ${l}`).join('\n')
return `
Tu es un assistant qui suggère les labels les plus appropriés pour une note.
CONTENU DE LA NOTE :
${noteContent.substring(0, 1000)}
NOTEBOOK ACTUEL :
${notebookName}
LABELS DISPONIBLES DANS CE NOTEBOOK :
${labelList}
TÂCHE :
Analyse le contenu de la note et suggère les labels les PLUS appropriés parmi les labels disponibles ci-dessus.
Considère :
1. La pertinence du label pour le contenu
2. Le nombre de labels (maximum 3 suggestions)
3. La confiance (seuil minimum : 0.6)
RÈGLES :
- Suggère SEULEMENT des labels qui sont dans la liste des labels disponibles
- Retourne au maximum 3 suggestions
- Chaque suggestion doit avoir une confiance > 0.6
- Si aucun label n'est pertinent, retourne un tableau vide
FORMAT DE RÉPONSE (JSON uniquement) :
{
"suggestions": [
{ "label": "nom_du_label", "confidence": 0.85, "reasoning": "Pourquoi ce label est pertinent" }
]
}
Ta réponse :
`.trim()
}
/**
* Build the AI prompt for NEW label suggestions (when notebook is empty)
*/
private buildNewLabelsPrompt(noteContent: string, notebookName: string): string {
return `
Tu es un assistant qui suggère de nouveaux labels pour organiser une note.
CONTENU DE LA NOTE :
${noteContent.substring(0, 1000)}
NOTEBOOK ACTUEL :
${notebookName}
CONTEXTE :
Ce notebook n'a pas encore de labels. Tu dois suggérer les PREMIERS labels appropriés pour cette note.
TÂCHE :
Analyse le contenu de la note et suggère 1-3 labels qui seraient pertinents pour organiser cette note.
Considère :
1. Les sujets ou thèmes abordés
2. Le type de contenu (idée, tâche, référence, etc.)
3. Le contexte du notebook "${notebookName}"
RÈGLES :
- Les labels doivent être COURTS (1-2 mots maximum)
- Les labels doivent être en minuscules
- Évite les accents si possible (ex: "idee" au lieu de "idée")
- Retourne au maximum 3 suggestions
- Chaque suggestion doit avoir une confiance > 0.6
IMPORTANT : Réponds UNIQUEMENT avec du JSON valide, sans texte avant ou après. Pas de markdown, pas de code blocks.
FORMAT DE RÉPONSE (JSON brut, sans markdown) :
{"suggestions":[{"label":"nom_du_label","confidence":0.85,"reasoning":"Pourquoi ce label est pertinent"}]}
Ta réponse (JSON brut uniquement) :
`.trim()
}
}
// Export singleton instance
export const contextualAutoTagService = new ContextualAutoTagService()

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/**
* Embedding Service
* Generates vector embeddings for semantic search and similarity analysis
* Uses text-embedding-3-small model via OpenAI (or Ollama alternatives)
*/
import { getAIProvider } from '../factory'
export interface EmbeddingResult {
embedding: number[]
model: string
dimension: number
}
/**
* Service for generating and managing text embeddings
*/
export class EmbeddingService {
private readonly EMBEDDING_MODEL = 'text-embedding-3-small'
private readonly EMBEDDING_DIMENSION = 1536 // OpenAI's embedding dimension
/**
* Generate embedding for a single text
*/
async generateEmbedding(text: string): Promise<EmbeddingResult> {
if (!text || text.trim().length === 0) {
throw new Error('Cannot generate embedding for empty text')
}
try {
const provider = getAIProvider()
// Use the existing getEmbeddings method from AIProvider
const embedding = await provider.getEmbeddings(text)
// Validate embedding dimension
if (embedding.length !== this.EMBEDDING_DIMENSION) {
}
return {
embedding,
model: this.EMBEDDING_MODEL,
dimension: embedding.length
}
} catch (error) {
console.error('Error generating embedding:', error)
throw new Error(`Failed to generate embedding: ${error}`)
}
}
/**
* Generate embeddings for multiple texts in batch
* More efficient than calling generateEmbedding multiple times
*/
async generateBatchEmbeddings(texts: string[]): Promise<EmbeddingResult[]> {
if (!texts || texts.length === 0) {
return []
}
// Filter out empty texts
const validTexts = texts.filter(t => t && t.trim().length > 0)
if (validTexts.length === 0) {
return []
}
try {
const provider = getAIProvider()
// Batch embedding using the existing getEmbeddings method
const embeddings = await Promise.all(
validTexts.map(text => provider.getEmbeddings(text))
)
return embeddings.map(embedding => ({
embedding,
model: this.EMBEDDING_MODEL,
dimension: embedding.length
}))
} catch (error) {
console.error('Error generating batch embeddings:', error)
throw error
}
}
/**
* Calculate cosine similarity between two embeddings
* Returns value between -1 and 1, where 1 is identical
*/
calculateCosineSimilarity(embedding1: number[], embedding2: number[]): number {
if (embedding1.length !== embedding2.length) {
throw new Error('Embeddings must have the same dimension')
}
let dotProduct = 0
let magnitude1 = 0
let magnitude2 = 0
for (let i = 0; i < embedding1.length; i++) {
dotProduct += embedding1[i] * embedding2[i]
magnitude1 += embedding1[i] * embedding1[i]
magnitude2 += embedding2[i] * embedding2[i]
}
magnitude1 = Math.sqrt(magnitude1)
magnitude2 = Math.sqrt(magnitude2)
if (magnitude1 === 0 || magnitude2 === 0) {
return 0
}
return dotProduct / (magnitude1 * magnitude2)
}
/**
* Calculate similarity between an embedding and multiple other embeddings
* Returns array of similarities
*/
calculateSimilarities(
queryEmbedding: number[],
targetEmbeddings: number[][]
): number[] {
return targetEmbeddings.map(embedding =>
this.calculateCosineSimilarity(queryEmbedding, embedding)
)
}
/**
* Find most similar embeddings to a query
* Returns top-k results with their similarities
*/
findMostSimilar(
queryEmbedding: number[],
targetEmbeddings: Array<{ id: string; embedding: number[] }>,
topK: number = 10
): Array<{ id: string; similarity: number }> {
const similarities = targetEmbeddings.map(({ id, embedding }) => ({
id,
similarity: this.calculateCosineSimilarity(queryEmbedding, embedding)
}))
// Sort by similarity descending and return top-k
return similarities
.sort((a, b) => b.similarity - a.similarity)
.slice(0, topK)
}
/**
* Get average embedding from multiple embeddings
* Useful for clustering or centroid calculation
*/
averageEmbeddings(embeddings: number[][]): number[] {
if (embeddings.length === 0) {
throw new Error('Cannot average empty embeddings array')
}
const dimension = embeddings[0].length
const average = new Array(dimension).fill(0)
for (const embedding of embeddings) {
if (embedding.length !== dimension) {
throw new Error('All embeddings must have the same dimension')
}
for (let i = 0; i < dimension; i++) {
average[i] += embedding[i]
}
}
// Divide by number of embeddings
return average.map(val => val / embeddings.length)
}
/**
* Serialize embedding to JSON-safe format (for storage)
*/
serialize(embedding: number[]): string {
return JSON.stringify(embedding)
}
/**
* Deserialize embedding from JSON string
*/
deserialize(jsonString: string): number[] {
try {
const parsed = JSON.parse(jsonString)
if (!Array.isArray(parsed)) {
throw new Error('Invalid embedding format')
}
return parsed
} catch (error) {
console.error('Error deserializing embedding:', error)
throw new Error('Failed to deserialize embedding')
}
}
/**
* Check if a note needs embedding regeneration
* (e.g., if content has changed significantly)
*/
shouldRegenerateEmbedding(
noteContent: string,
lastEmbeddingContent: string | null,
lastAnalysis: Date | null
): boolean {
// If no previous embedding, generate one
if (!lastEmbeddingContent || !lastAnalysis) {
return true
}
// If content has changed more than 20% (simple heuristic)
const contentChanged =
Math.abs(noteContent.length - lastEmbeddingContent.length) / lastEmbeddingContent.length > 0.2
// If last analysis is more than 7 days old
const daysSinceAnalysis = (Date.now() - lastAnalysis.getTime()) / (1000 * 60 * 60 * 24)
const isStale = daysSinceAnalysis > 7
return contentChanged || isStale
}
}
// Singleton instance
export const embeddingService = new EmbeddingService()

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/**
* AI Services Index
* Central exports for all AI-powered services
*/
// Language Detection
export { LanguageDetectionService } from './language-detection.service'
// Title Suggestions
export {
TitleSuggestionService,
titleSuggestionService,
type TitleSuggestion
} from './title-suggestion.service'
// Embeddings
export {
EmbeddingService,
embeddingService,
type EmbeddingResult
} from './embedding.service'
// Semantic Search
export {
SemanticSearchService,
semanticSearchService,
type SearchResult,
type SearchOptions
} from './semantic-search.service'
// Paragraph Refactor
export {
ParagraphRefactorService,
paragraphRefactorService,
type RefactorMode,
type RefactorOption,
type RefactorResult,
REFACTOR_OPTIONS
} from './paragraph-refactor.service'
// Memory Echo
export {
MemoryEchoService,
memoryEchoService,
type MemoryEchoInsight
} from './memory-echo.service'
// Batch Organization
export {
BatchOrganizationService,
batchOrganizationService,
type NoteForOrganization,
type NotebookOrganization,
type OrganizationPlan
} from './batch-organization.service'
// Auto Label Creation
export {
AutoLabelCreationService,
autoLabelCreationService,
type SuggestedLabel,
type AutoLabelSuggestion
} from './auto-label-creation.service'
// Notebook Summary
export {
NotebookSummaryService,
notebookSummaryService,
type NotebookSummary
} from './notebook-summary.service'

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import { detect } from 'tinyld'
/**
* Language Detection Service
*
* Uses hybrid approach:
* - TinyLD for notes < 50 words (fast, ~8ms)
* - AI for notes ≥ 50 words (more accurate, ~200-500ms)
*
* Supports 62 languages including Persian (fa)
*/
export class LanguageDetectionService {
private readonly MIN_WORDS_FOR_AI = 50
private readonly MIN_CONFIDENCE = 0.7
/**
* Detect language of content using hybrid approach
*/
async detectLanguage(content: string): Promise<{
language: string // 'fr' | 'en' | 'es' | 'de' | 'fa' | 'unknown'
confidence: number // 0.0-1.0
method: 'tinyld' | 'ai' | 'unknown'
}> {
if (!content || content.trim().length === 0) {
return {
language: 'unknown',
confidence: 0.0,
method: 'unknown'
}
}
const wordCount = content.split(/\s+/).length
// Short notes: TinyLD (fast, TypeScript native)
if (wordCount < this.MIN_WORDS_FOR_AI) {
const result = detect(content)
return {
language: this.mapToISO(result),
confidence: 0.8,
method: 'tinyld'
}
}
// Long notes: AI for better accuracy
try {
const detected = await this.detectLanguageWithAI(content)
return {
language: detected,
confidence: 0.9,
method: 'ai'
}
} catch (error) {
console.error('Language detection error:', error)
// Fallback to TinyLD
const result = detect(content)
return {
language: this.mapToISO(result),
confidence: 0.6,
method: 'tinyld'
}
}
}
/**
* Detect language using AI provider
* (Fallback method for long content)
*/
private async detectLanguageWithAI(content: string): Promise<string> {
// For now, use TinyLD as AI detection is not yet implemented
// In Phase 2, we can add AI-based detection for better accuracy
const result = detect(content)
return this.mapToISO(result)
}
/**
* Map TinyLD language codes to ISO 639-1
*/
private mapToISO(code: string): string {
const mapping: Record<string, string> = {
'fra': 'fr',
'eng': 'en',
'spa': 'es',
'deu': 'de',
'fas': 'fa',
'pes': 'fa', // Persian (Farsi)
'por': 'pt',
'ita': 'it',
'rus': 'ru',
'zho': 'zh',
'jpn': 'ja',
'kor': 'ko',
'ara': 'ar',
'hin': 'hi',
'nld': 'nl',
'pol': 'pl',
'tur': 'tr',
'vie': 'vi',
'tha': 'th',
'ind': 'id'
}
// Direct mapping for ISO codes
if (code.length === 2 && /^[a-z]{2}$/.test(code)) {
return code
}
// Use mapping or fallback
return mapping[code] || code.substring(0, 2).toLowerCase()
}
/**
* Get supported languages count
*/
getSupportedLanguagesCount(): number {
return 62 // TinyLD supports 62 languages
}
/**
* Check if a language code is supported
*/
isLanguageSupported(languageCode: string): boolean {
// TinyLD supports 62 languages including Persian (fa)
const supportedCodes = [
'fr', 'en', 'es', 'de', 'fa', 'pt', 'it', 'ru', 'zh',
'ja', 'ko', 'ar', 'hi', 'nl', 'pl', 'tr', 'vi', 'th', 'id'
// ... and 43 more
]
return supportedCodes.includes(languageCode.toLowerCase())
}
}

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import { getAIProvider } from '../factory'
import { cosineSimilarity } from '@/lib/utils'
import prisma from '@/lib/prisma'
export interface NoteConnection {
note1: {
id: string
title: string | null
content: string
createdAt: Date
}
note2: {
id: string
title: string | null
content: string | null
createdAt: Date
}
similarityScore: number
insight: string
daysApart: number
}
export interface MemoryEchoInsight {
id: string
note1Id: string
note2Id: string
note1: {
id: string
title: string | null
content: string
}
note2: {
id: string
title: string | null
content: string
}
similarityScore: number
insight: string
insightDate: Date
viewed: boolean
feedback: string | null
}
/**
* Memory Echo Service - Proactive note connections
* "I didn't search, it found me"
*/
export class MemoryEchoService {
private readonly SIMILARITY_THRESHOLD = 0.75 // High threshold for quality connections
private readonly SIMILARITY_THRESHOLD_DEMO = 0.50 // Lower threshold for demo mode
private readonly MIN_DAYS_APART = 7 // Notes must be at least 7 days apart
private readonly MIN_DAYS_APART_DEMO = 0 // No delay for demo mode
private readonly MAX_INSIGHTS_PER_USER = 100 // Prevent spam
/**
* Find meaningful connections between user's notes
*/
async findConnections(userId: string, demoMode: boolean = false): Promise<NoteConnection[]> {
// Get all user's notes with embeddings
const notes = await prisma.note.findMany({
where: {
userId,
isArchived: false,
embedding: { not: null } // Only notes with embeddings
},
select: {
id: true,
title: true,
content: true,
embedding: true,
createdAt: true
},
orderBy: { createdAt: 'desc' }
})
if (notes.length < 2) {
return [] // Need at least 2 notes to find connections
}
// Parse embeddings
const notesWithEmbeddings = notes
.map(note => ({
...note,
embedding: note.embedding ? JSON.parse(note.embedding) : null
}))
.filter(note => note.embedding && Array.isArray(note.embedding))
const connections: NoteConnection[] = []
// Use demo mode parameters if enabled
const minDaysApart = demoMode ? this.MIN_DAYS_APART_DEMO : this.MIN_DAYS_APART
const similarityThreshold = demoMode ? this.SIMILARITY_THRESHOLD_DEMO : this.SIMILARITY_THRESHOLD
// Compare all pairs of notes
for (let i = 0; i < notesWithEmbeddings.length; i++) {
for (let j = i + 1; j < notesWithEmbeddings.length; j++) {
const note1 = notesWithEmbeddings[i]
const note2 = notesWithEmbeddings[j]
// Calculate time difference
const daysApart = Math.abs(
Math.floor((note1.createdAt.getTime() - note2.createdAt.getTime()) / (1000 * 60 * 60 * 24))
)
// Time diversity filter: notes must be from different time periods
if (daysApart < minDaysApart) {
continue
}
// Calculate cosine similarity
const similarity = cosineSimilarity(note1.embedding, note2.embedding)
// Similarity threshold for meaningful connections
if (similarity >= similarityThreshold) {
connections.push({
note1: {
id: note1.id,
title: note1.title,
content: note1.content.substring(0, 200) + (note1.content.length > 200 ? '...' : ''),
createdAt: note1.createdAt
},
note2: {
id: note2.id,
title: note2.title,
content: note2.content ? note2.content.substring(0, 200) + (note2.content.length > 200 ? '...' : '') : '',
createdAt: note2.createdAt
},
similarityScore: similarity,
insight: '', // Will be generated by AI
daysApart
})
}
}
}
// Sort by similarity score (descending)
connections.sort((a, b) => b.similarityScore - a.similarityScore)
// Return top connections
return connections.slice(0, 10)
}
/**
* Generate AI explanation for the connection
*/
async generateInsight(
note1Title: string | null,
note1Content: string,
note2Title: string | null,
note2Content: string
): Promise<string> {
try {
const config = await prisma.systemConfig.findFirst()
const provider = getAIProvider(config || undefined)
const note1Desc = note1Title || 'Untitled note'
const note2Desc = note2Title || 'Untitled note'
const prompt = `You are a helpful assistant analyzing connections between notes.
Note 1: "${note1Desc}"
Content: ${note1Content.substring(0, 300)}
Note 2: "${note2Desc}"
Content: ${note2Content.substring(0, 300)}
Explain in one brief sentence (max 15 words) why these notes are connected. Focus on the semantic relationship.`
const response = await provider.generateText(prompt)
// Clean up response
const insight = response
.replace(/^["']|["']$/g, '') // Remove quotes
.replace(/^[^.]+\.\s*/, '') // Remove "Here is..." prefix
.trim()
.substring(0, 150) // Max length
return insight || 'These notes appear to be semantically related.'
} catch (error) {
console.error('[MemoryEcho] Failed to generate insight:', error)
return 'These notes appear to be semantically related.'
}
}
/**
* Get next pending insight for user (based on frequency limit)
*/
async getNextInsight(userId: string): Promise<MemoryEchoInsight | null> {
// Check if Memory Echo is enabled for user
const settings = await prisma.userAISettings.findUnique({
where: { userId }
})
if (!settings || !settings.memoryEcho) {
return null // Memory Echo disabled
}
const demoMode = settings.demoMode || false
// Skip frequency checks in demo mode
if (!demoMode) {
// Check frequency limit
const today = new Date()
today.setHours(0, 0, 0, 0)
const insightsShownToday = await prisma.memoryEchoInsight.count({
where: {
userId,
insightDate: {
gte: today
}
}
})
// Frequency limits
const maxPerDay = settings.memoryEchoFrequency === 'daily' ? 1 :
settings.memoryEchoFrequency === 'weekly' ? 0 : // 1 per 7 days (handled below)
3 // custom = 3 per day
if (settings.memoryEchoFrequency === 'weekly') {
// Check if shown in last 7 days
const weekAgo = new Date(today)
weekAgo.setDate(weekAgo.getDate() - 7)
const recentInsight = await prisma.memoryEchoInsight.findFirst({
where: {
userId,
insightDate: {
gte: weekAgo
}
}
})
if (recentInsight) {
return null // Already shown this week
}
} else if (insightsShownToday >= maxPerDay) {
return null // Daily limit reached
}
// Check total insights limit (prevent spam)
const totalInsights = await prisma.memoryEchoInsight.count({
where: { userId }
})
if (totalInsights >= this.MAX_INSIGHTS_PER_USER) {
return null // User has too many insights
}
}
// Find new connections (pass demoMode)
const connections = await this.findConnections(userId, demoMode)
if (connections.length === 0) {
return null // No connections found
}
// Filter out already shown connections
const existingInsights = await prisma.memoryEchoInsight.findMany({
where: { userId },
select: { note1Id: true, note2Id: true }
})
const shownPairs = new Set(
existingInsights.map(i => `${i.note1Id}-${i.note2Id}`)
)
const newConnection = connections.find(c =>
!shownPairs.has(`${c.note1.id}-${c.note2.id}`) &&
!shownPairs.has(`${c.note2.id}-${c.note1.id}`)
)
if (!newConnection) {
return null // All connections already shown
}
// Generate AI insight
const insightText = await this.generateInsight(
newConnection.note1.title,
newConnection.note1.content,
newConnection.note2.title,
newConnection.note2.content || ''
)
// Store insight in database
const insight = await prisma.memoryEchoInsight.create({
data: {
userId,
note1Id: newConnection.note1.id,
note2Id: newConnection.note2.id,
similarityScore: newConnection.similarityScore,
insight: insightText,
insightDate: new Date(),
viewed: false
},
include: {
note1: {
select: {
id: true,
title: true,
content: true
}
},
note2: {
select: {
id: true,
title: true,
content: true
}
}
}
})
return insight
}
/**
* Mark insight as viewed
*/
async markAsViewed(insightId: string): Promise<void> {
await prisma.memoryEchoInsight.update({
where: { id: insightId },
data: { viewed: true }
})
}
/**
* Submit feedback for insight
*/
async submitFeedback(insightId: string, feedback: 'thumbs_up' | 'thumbs_down'): Promise<void> {
await prisma.memoryEchoInsight.update({
where: { id: insightId },
data: { feedback }
})
// Optional: Store in AiFeedback for analytics
const insight = await prisma.memoryEchoInsight.findUnique({
where: { id: insightId },
select: { userId: true, note1Id: true }
})
if (insight) {
await prisma.aiFeedback.create({
data: {
noteId: insight.note1Id,
userId: insight.userId,
feedbackType: feedback,
feature: 'memory_echo',
originalContent: JSON.stringify({ insightId }),
metadata: JSON.stringify({
timestamp: new Date().toISOString()
})
}
})
}
}
/**
* Get all connections for a specific note
*/
async getConnectionsForNote(noteId: string, userId: string): Promise<NoteConnection[]> {
// Get the note with embedding
const targetNote = await prisma.note.findUnique({
where: { id: noteId },
select: {
id: true,
title: true,
content: true,
embedding: true,
createdAt: true,
userId: true
}
})
if (!targetNote || targetNote.userId !== userId) {
return [] // Note not found or doesn't belong to user
}
if (!targetNote.embedding) {
return [] // Note has no embedding
}
// Get dismissed connections for this note (to filter them out)
const dismissedInsights = await prisma.memoryEchoInsight.findMany({
where: {
userId,
dismissed: true,
OR: [
{ note1Id: noteId },
{ note2Id: noteId }
]
},
select: {
note1Id: true,
note2Id: true
}
})
// Create a set of dismissed note pairs for quick lookup
const dismissedPairs = new Set(
dismissedInsights.map(i =>
`${i.note1Id}-${i.note2Id}`
)
)
// Get all other user's notes with embeddings
const otherNotes = await prisma.note.findMany({
where: {
userId,
id: { not: noteId }, // Exclude the target note
isArchived: false,
embedding: { not: null }
},
select: {
id: true,
title: true,
content: true,
embedding: true,
createdAt: true
},
orderBy: { createdAt: 'desc' }
})
if (otherNotes.length === 0) {
return []
}
// Parse target note embedding
const targetEmbedding = JSON.parse(targetNote.embedding)
// Check if user has demo mode enabled
const settings = await prisma.userAISettings.findUnique({
where: { userId }
})
const demoMode = settings?.demoMode || false
const minDaysApart = demoMode ? this.MIN_DAYS_APART_DEMO : this.MIN_DAYS_APART
const similarityThreshold = demoMode ? this.SIMILARITY_THRESHOLD_DEMO : this.SIMILARITY_THRESHOLD
const connections: NoteConnection[] = []
// Compare target note with all other notes
for (const otherNote of otherNotes) {
if (!otherNote.embedding) continue
const otherEmbedding = JSON.parse(otherNote.embedding)
// Check if this connection was dismissed
const pairKey1 = `${targetNote.id}-${otherNote.id}`
const pairKey2 = `${otherNote.id}-${targetNote.id}`
if (dismissedPairs.has(pairKey1) || dismissedPairs.has(pairKey2)) {
continue
}
// Calculate time difference
const daysApart = Math.abs(
Math.floor((targetNote.createdAt.getTime() - otherNote.createdAt.getTime()) / (1000 * 60 * 60 * 24))
)
// Time diversity filter
if (daysApart < minDaysApart) {
continue
}
// Calculate cosine similarity
const similarity = cosineSimilarity(targetEmbedding, otherEmbedding)
// Similarity threshold
if (similarity >= similarityThreshold) {
connections.push({
note1: {
id: targetNote.id,
title: targetNote.title,
content: targetNote.content.substring(0, 200) + (targetNote.content.length > 200 ? '...' : ''),
createdAt: targetNote.createdAt
},
note2: {
id: otherNote.id,
title: otherNote.title,
content: otherNote.content ? otherNote.content.substring(0, 200) + (otherNote.content.length > 200 ? '...' : '') : '',
createdAt: otherNote.createdAt
},
similarityScore: similarity,
insight: '', // Will be generated on demand
daysApart
})
}
}
// Sort by similarity score (descending)
connections.sort((a, b) => b.similarityScore - a.similarityScore)
return connections
}
/**
* Get insights history for user
*/
async getInsightsHistory(userId: string): Promise<MemoryEchoInsight[]> {
const insights = await prisma.memoryEchoInsight.findMany({
where: { userId },
include: {
note1: {
select: {
id: true,
title: true,
content: true
}
},
note2: {
select: {
id: true,
title: true,
content: true
}
}
},
orderBy: { insightDate: 'desc' },
take: 20
})
return insights
}
}
// Export singleton instance
export const memoryEchoService = new MemoryEchoService()

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import { prisma } from '@/lib/prisma'
import { getAIProvider } from '@/lib/ai/factory'
import type { Notebook } from '@/lib/types'
export class NotebookSuggestionService {
/**
* Suggest the most appropriate notebook for a note
* @param noteContent - Content of the note
* @param userId - User ID (for fetching user's notebooks)
* @returns Suggested notebook or null (if no good match)
*/
async suggestNotebook(noteContent: string, userId: string): Promise<Notebook | null> {
// 1. Get all notebooks for this user
const notebooks = await prisma.notebook.findMany({
where: { userId },
include: {
labels: true,
_count: {
select: { notes: true },
},
},
orderBy: { order: 'asc' },
})
if (notebooks.length === 0) {
return null // No notebooks to suggest
}
// 2. Build prompt for AI (always in French - interface language)
const prompt = this.buildPrompt(noteContent, notebooks)
// 3. Call AI
try {
const provider = getAIProvider()
const response = await provider.generateText(prompt)
const suggestedName = response.trim().toUpperCase()
// 5. Find matching notebook
const suggestedNotebook = notebooks.find(nb =>
nb.name.toUpperCase() === suggestedName
)
// If AI says "NONE" or no match, return null
if (suggestedName === 'NONE' || !suggestedNotebook) {
return null
}
return suggestedNotebook as Notebook
} catch (error) {
console.error('Failed to suggest notebook:', error)
return null
}
}
/**
* Build the AI prompt for notebook suggestion (always in French - interface language)
*/
private buildPrompt(noteContent: string, notebooks: any[]): string {
const notebookList = notebooks
.map(nb => {
const labels = nb.labels.map((l: any) => l.name).join(', ')
const count = nb._count?.notes || 0
return `- ${nb.name} (${count} notes)${labels ? ` [labels: ${labels}]` : ''}`
})
.join('\n')
return `
Tu es un assistant qui suggère à quel carnet une note devrait appartenir.
CONTENU DE LA NOTE :
${noteContent.substring(0, 500)}
CARNETS DISPONIBLES :
${notebookList}
TÂCHE :
Analyse le contenu de la note (peu importe la langue) et suggère le carnet le PLUS approprié pour cette note.
Considère :
1. Le sujet/thème de la note (LE PLUS IMPORTANT)
2. Les labels existants dans chaque carnet
3. Le nombre de notes (préfère les carnets avec du contenu connexe)
GUIDES DE CLASSIFICATION :
- SPORT/EXERCICE/ACHATS/COURSSES → Carnet Personnel
- LOISIRS/PASSIONS/SORTIES → Carnet Personnel
- SANTÉ/FITNESS/MÉDECIN → Carnet Personnel ou Santé
- FAMILLE/AMIS → Carnet Personnel
- TRAVAIL/RÉUNIONS/PROJETS/CLIENTS → Carnet Travail
- CODING/TECH/DÉVELOPPEMENT → Carnet Travail ou Code
- FINANCES/FACTURES/BANQUE → Carnet Personnel ou Finances
RÈGLES :
- Retourne SEULEMENT le nom du carnet, EXACTEMENT comme indiqué ci-dessus (insensible à la casse)
- Si aucune bonne correspondance n'existe, retourne "NONE"
- Si la note est trop générique/vague, retourne "NONE"
- N'inclus pas d'explications ou de texte supplémentaire
Exemples :
- "Réunion avec Jean sur le planning du projet" → carnet "Travail"
- "Liste de courses ou achat de vêtements" → carnet "Personnel"
- "Script Python pour analyse de données" → carnet "Code"
- "Séance de sport ou fitness" → carnet "Personnel"
- "Achat d'une chemise et d'un jean" → carnet "Personnel"
Ta suggestion :
`.trim()
}
/**
* Batch suggest notebooks for multiple notes (IA3)
* @param noteContents - Array of note contents
* @param userId - User ID
* @returns Map of note index -> suggested notebook
*/
async suggestNotebooksBatch(
noteContents: string[],
userId: string
): Promise<Map<number, Notebook | null>> {
const results = new Map<number, Notebook | null>()
// For efficiency, we could batch this into a single AI call
// For now, process sequentially (could be parallelized)
for (let i = 0; i < noteContents.length; i++) {
const suggestion = await this.suggestNotebook(noteContents[i], userId)
results.set(i, suggestion)
}
return results
}
/**
* Get notebook suggestion confidence score
* (For future UI enhancement: show confidence level)
*/
async suggestNotebookWithConfidence(
noteContent: string,
userId: string
): Promise<{ notebook: Notebook | null; confidence: number }> {
// This could use logprobs from OpenAI API to calculate confidence
// For now, return binary confidence
const notebook = await this.suggestNotebook(noteContent, userId)
return {
notebook,
confidence: notebook ? 0.8 : 0, // Fixed confidence for now
}
}
}
// Export singleton instance
export const notebookSuggestionService = new NotebookSuggestionService()

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import { prisma } from '@/lib/prisma'
import { getAIProvider } from '@/lib/ai/factory'
export interface NotebookSummary {
notebookId: string
notebookName: string
notebookIcon: string | null
summary: string // Markdown formatted summary
stats: {
totalNotes: number
totalLabels: number
labelsUsed: string[]
}
generatedAt: Date
}
/**
* Service for generating AI-powered notebook summaries
* (Story 5.6 - IA6)
*/
export class NotebookSummaryService {
/**
* Generate a summary for a notebook
* @param notebookId - Notebook ID
* @param userId - User ID (for authorization)
* @returns Notebook summary or null
*/
async generateSummary(notebookId: string, userId: string): Promise<NotebookSummary | null> {
// 1. Get notebook with notes and labels
const notebook = await prisma.notebook.findFirst({
where: {
id: notebookId,
userId,
},
include: {
labels: {
select: {
id: true,
name: true,
},
},
_count: {
select: { notes: true },
},
},
})
if (!notebook) {
throw new Error('Notebook not found')
}
// Get all notes in this notebook
const notes = await prisma.note.findMany({
where: {
notebookId,
userId,
},
select: {
id: true,
title: true,
content: true,
createdAt: true,
updatedAt: true,
labelRelations: {
select: {
name: true,
},
},
},
orderBy: {
updatedAt: 'desc',
},
take: 100, // Limit to 100 most recent notes for summary
})
if (notes.length === 0) {
return null
}
// 2. Generate summary using AI
const summary = await this.generateAISummary(notes, notebook)
// 3. Get labels used in this notebook
const labelsUsed = Array.from(
new Set(
notes.flatMap(note =>
note.labelRelations.map(l => l.name)
)
)
)
return {
notebookId: notebook.id,
notebookName: notebook.name,
notebookIcon: notebook.icon,
summary,
stats: {
totalNotes: notebook._count.notes,
totalLabels: notebook.labels.length,
labelsUsed,
},
generatedAt: new Date(),
}
}
/**
* Use AI to generate notebook summary
*/
private async generateAISummary(notes: any[], notebook: any): Promise<string> {
// Build notes summary for AI
const notesSummary = notes
.map((note, index) => {
const title = note.title || 'Sans titre'
const content = note.content.substring(0, 200) // Limit content length
const labels = note.labelRelations.map((l: any) => l.name).join(', ')
const date = new Date(note.createdAt).toLocaleDateString('fr-FR')
return `[${index + 1}] **${title}** (${date})
${labels ? `Labels: ${labels}` : ''}
${content}...`
})
.join('\n\n')
const prompt = this.buildPrompt(notesSummary, notebook.name)
try {
const provider = getAIProvider()
const summary = await provider.generateText(prompt)
return summary.trim()
} catch (error) {
console.error('Failed to generate notebook summary:', error)
throw error
}
}
/**
* Build prompt for AI (always in French - interface language)
*/
private buildPrompt(notesSummary: string, notebookName: string): string {
return `
Tu es un assistant qui génère des synthèses structurées de carnets de notes.
CARNET: ${notebookName}
NOTES DU CARNET:
${notesSummary}
TÂCHE:
Génère une synthèse structurée et organisée de ce carnet en analysant toutes les notes.
FORMAT DE LA RÉPONSE (Markdown avec emojis):
# 📊 Synthèse du Carnet ${notebookName}
## 🌍 Thèmes Principaux
• Identifie 3-5 thèmes récurrents ou sujets abordés
## 📝 Statistiques
• Nombre total de notes analysées
• Principales catégories de contenu
## 📅 Éléments Temporels
• Dates ou périodes importantes mentionnées
• Événements planifiés vs passés
## ⚠️ Points d'Attention / Actions Requises
• Tâches ou actions identifiées dans les notes
• Rappels ou échéances importantes
• Éléments nécessitant une attention particulière
## 💡 Insights Clés
• Résumé des informations les plus importantes
• Tendances ou patterns observés
• Connexions entre les différentes notes
RÈGLES:
- Utilise le format Markdown avec emojis comme dans l'exemple
- Sois concis et organise l'information de manière claire
- Identifie les vraies tendances, ne pas inventer d'informations
- Si une section n'est pas pertinente, utilise "N/A" ou omets-la
- Ton: professionnel mais accessible
Ta réponse :
`.trim()
}
}
// Export singleton instance
export const notebookSummaryService = new NotebookSummaryService()

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/**
* Paragraph Refactor Service
* Provides AI-powered text reformulation with 3 options:
* 1. Clarify - Make ambiguous text clearer
* 2. Shorten - Condense while keeping meaning
* 3. Improve Style - Enhance readability and flow
*/
import { LanguageDetectionService } from './language-detection.service'
export type RefactorMode = 'clarify' | 'shorten' | 'improveStyle'
export interface RefactorOption {
mode: RefactorMode
label: string
description: string
icon: string
}
export interface RefactorResult {
original: string
refactored: string
mode: RefactorMode
language: string
wordCountChange: {
original: number
refactored: number
difference: number
percentage: number
}
}
export const REFACTOR_OPTIONS: RefactorOption[] = [
{
mode: 'clarify',
label: 'Clarify',
description: 'Make the text clearer and easier to understand',
icon: '💡'
},
{
mode: 'shorten',
label: 'Shorten',
description: 'Condense the text while keeping key information',
icon: '✂️'
},
{
mode: 'improveStyle',
label: 'Improve Style',
description: 'Enhance readability, flow, and expression',
icon: '✨'
}
]
export class ParagraphRefactorService {
private languageDetection: LanguageDetectionService
private readonly MIN_WORDS = 10
private readonly MAX_WORDS = 500
constructor() {
this.languageDetection = new LanguageDetectionService()
}
/**
* Refactor a paragraph with the specified mode
*/
async refactor(
content: string,
mode: RefactorMode
): Promise<RefactorResult> {
// Validate word count
const wordCount = content.split(/\s+/).length
if (wordCount < this.MIN_WORDS || wordCount > this.MAX_WORDS) {
throw new Error(
`Please select ${this.MIN_WORDS}-${this.MAX_WORDS} words to reformulate`
)
}
// Detect language
const { language } = await this.languageDetection.detectLanguage(content)
try {
// Build prompts
const systemPrompt = this.getSystemPrompt(mode)
const userPrompt = this.getUserPrompt(mode, content, language)
// Get AI provider response using fetch
let baseUrl = process.env.OLLAMA_BASE_URL || 'http://localhost:11434'
// Remove /api suffix if present to avoid double /api/api/...
if (baseUrl.endsWith('/api')) {
baseUrl = baseUrl.slice(0, -4)
}
const modelName = process.env.OLLAMA_MODEL || 'granite4:latest'
const response = await fetch(`${baseUrl}/api/generate`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
model: modelName,
system: systemPrompt,
prompt: userPrompt,
stream: false,
}),
})
if (!response.ok) {
throw new Error(`Provider error: ${response.statusText}`)
}
const data = await response.json()
const refactored = this.extractRefactoredText(data.response)
// Calculate word count change
const refactoredWordCount = refactored.split(/\s+/).length
const wordCountChange = {
original: wordCount,
refactored: refactoredWordCount,
difference: refactoredWordCount - wordCount,
percentage: ((refactoredWordCount - wordCount) / wordCount) * 100
}
return {
original: content,
refactored,
mode,
language,
wordCountChange
}
} catch (error) {
throw new Error('Failed to refactor paragraph. Please try again.')
}
}
/**
* Get all 3 refactor options for a paragraph at once
* More efficient than calling refactor() 3 times
*/
async refactorAllModes(content: string): Promise<RefactorResult[]> {
// Validate word count
const wordCount = content.split(/\s+/).length
if (wordCount < this.MIN_WORDS || wordCount > this.MAX_WORDS) {
throw new Error(
`Please select ${this.MIN_WORDS}-${this.MAX_WORDS} words to reformulate`
)
}
// Detect language
const { language } = await this.languageDetection.detectLanguage(content)
try {
// System prompt for all modes
const systemPrompt = `You are an expert text editor who can improve text in multiple ways.
Your task is to provide 3 different reformulations of the user's text.
For each reformulation:
1. Clarify: Make the text clearer, more explicit, easier to understand
2. Shorten: Condense the text while preserving all key information and meaning
3. Improve Style: Enhance readability, flow, vocabulary, and expression
CRITICAL LANGUAGE RULE: You MUST respond in the EXACT SAME LANGUAGE as the input text.
- If input is French, ALL 3 outputs MUST be in French
- If input is German, ALL 3 outputs MUST be in German
- If input is Spanish, ALL 3 outputs MUST be in Spanish
- NEVER translate to English unless the input is in English
Maintain the original meaning and intent:
- For "shorten", aim to reduce by 30-50% while keeping all key points
- For "clarify", expand where necessary but keep it natural
- For "improve style", keep similar length but enhance quality
Output Format (JSON):
{
"clarify": "clarified text here...",
"shorten": "shortened text here...",
"improveStyle": "improved text here..."
}`
const userPrompt = `CRITICAL LANGUAGE INSTRUCTION: The text below is in ${language}. Your response MUST be in ${language}. Do NOT translate to English.
Please provide 3 reformulations of this ${language} text:
${content}
Original language: ${language}
IMPORTANT: Provide all 3 versions in ${language}. No English, no explanations.`
// Get AI provider response using fetch
let baseUrl = process.env.OLLAMA_BASE_URL || 'http://localhost:11434'
// Remove /api suffix if present to avoid double /api/api/...
if (baseUrl.endsWith('/api')) {
baseUrl = baseUrl.slice(0, -4)
}
const modelName = process.env.OLLAMA_MODEL || 'granite4:latest'
const response = await fetch(`${baseUrl}/api/generate`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
model: modelName,
system: systemPrompt,
prompt: userPrompt,
stream: false,
}),
})
if (!response.ok) {
throw new Error(`Provider error: ${response.statusText}`)
}
const data = await response.json()
// Parse JSON response
const jsonResponse = JSON.parse(data.response)
const modes: RefactorMode[] = ['clarify', 'shorten', 'improveStyle']
const results: RefactorResult[] = []
for (const mode of modes) {
if (!jsonResponse[mode]) continue
const refactored = this.extractRefactoredText(jsonResponse[mode])
const refactoredWordCount = refactored.split(/\s+/).length
results.push({
original: content,
refactored,
mode,
language,
wordCountChange: {
original: wordCount,
refactored: refactoredWordCount,
difference: refactoredWordCount - wordCount,
percentage: ((refactoredWordCount - wordCount) / wordCount) * 100
}
})
}
return results
} catch (error) {
throw new Error('Failed to generate refactor options. Please try again.')
}
}
/**
* Get mode-specific system prompt
*/
private getSystemPrompt(mode: RefactorMode): string {
const prompts = {
clarify: `You are an expert at making text clearer and more understandable.
Your goal: Rewrite the text to eliminate ambiguity, add necessary context, and improve clarity.
CRITICAL LANGUAGE RULE: You MUST respond in the EXACT SAME LANGUAGE as the input text. If input is French, output MUST be French. If input is German, output MUST be German. NEVER translate to English.
Maintain the original meaning and tone, just make it clearer.`,
shorten: `You are an expert at concise writing.
Your goal: Reduce the text length by 30-50% while preserving ALL key information and meaning.
CRITICAL LANGUAGE RULE: You MUST respond in the EXACT SAME LANGUAGE as the input text. If input is French, output MUST be French. If input is German, output MUST be German. NEVER translate to English.
Remove fluff, repetition, and unnecessary words, but keep the substance.`,
improveStyle: `You are an expert editor with a focus on readability and flow.
Your goal: Enhance the text's style, vocabulary, sentence structure, and overall quality.
CRITICAL LANGUAGE RULE: You MUST respond in the EXACT SAME LANGUAGE as the input text. If input is French, output MUST be French. If input is German, output MUST be German. NEVER translate to English.
Maintain similar length but make it sound more professional and polished.`
}
return prompts[mode]
}
/**
* Get mode-specific user prompt
*/
private getUserPrompt(mode: RefactorMode, content: string, language: string): string {
const instructions = {
clarify: `IMPORTANT: The text below is in ${language}. Your response MUST be in ${language}. Do NOT translate to English.
Please clarify and make this ${language} text easier to understand:`,
shorten: `IMPORTANT: The text below is in ${language}. Your response MUST be in ${language}. Do NOT translate to English.
Please shorten this ${language} text while keeping all key information:`,
improveStyle: `IMPORTANT: The text below is in ${language}. Your response MUST be in ${language}. Do NOT translate to English.
Please improve the style and readability of this ${language} text:`
}
return `${instructions[mode]}
${content}
CRITICAL: Respond ONLY with the refactored text in ${language}. No explanations, no meta-commentary, no English.`
}
/**
* Extract refactored text from AI response
* Handles JSON, markdown code blocks, or plain text
*/
private extractRefactoredText(response: string): string {
// Try JSON first
if (response.trim().startsWith('{')) {
try {
const parsed = JSON.parse(response)
// Look for common response fields
return parsed.refactored || parsed.text || parsed.result || response
} catch {
// Not valid JSON, continue
}
}
// Try markdown code block
const codeBlockMatch = response.match(/```(?:markdown)?\n([\s\S]+?)\n```/)
if (codeBlockMatch) {
return codeBlockMatch[1].trim()
}
// Fallback: trim whitespace and quotes
return response.trim().replace(/^["']|["']$/g, '')
}
/**
* Validate that text is within acceptable word count range
*/
validateWordCount(content: string): { valid: boolean; error?: string } {
const wordCount = content.split(/\s+/).length
if (wordCount < this.MIN_WORDS) {
return {
valid: false,
error: `Please select at least ${this.MIN_WORDS} words to reformulate (currently ${wordCount} words)`
}
}
if (wordCount > this.MAX_WORDS) {
return {
valid: false,
error: `Please select at most ${this.MAX_WORDS} words to reformulate (currently ${wordCount} words)`
}
}
return { valid: true }
}
}
// Singleton instance
export const paragraphRefactorService = new ParagraphRefactorService()

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@@ -0,0 +1,330 @@
/**
* Semantic Search Service
* Hybrid search combining keyword matching and semantic similarity
* Uses Reciprocal Rank Fusion (RRF) for result ranking
*/
import { embeddingService } from './embedding.service'
import { prisma } from '@/lib/prisma'
import { auth } from '@/auth'
export interface SearchResult {
noteId: string
title: string | null
content: string
score: number
matchType: 'exact' | 'related'
language?: string | null
}
export interface SearchOptions {
limit?: number
threshold?: number // Minimum similarity score (0-1)
includeExactMatches?: boolean
notebookId?: string // NEW: Filter by notebook for contextual search (IA5)
}
export class SemanticSearchService {
private readonly RRF_K = 60 // RRF constant (default recommended value)
private readonly DEFAULT_LIMIT = 20
private readonly DEFAULT_THRESHOLD = 0.6
/**
* Hybrid search: keyword + semantic with RRF fusion
*/
async search(
query: string,
options: SearchOptions = {}
): Promise<SearchResult[]> {
const {
limit = this.DEFAULT_LIMIT,
threshold = this.DEFAULT_THRESHOLD,
includeExactMatches = true,
notebookId // NEW: Contextual search within notebook (IA5)
} = options
if (!query || query.trim().length < 2) {
return []
}
const session = await auth()
const userId = session?.user?.id || null
try {
// 1. Keyword search (SQLite FTS)
const keywordResults = await this.keywordSearch(query, userId, notebookId)
// 2. Semantic search (vector similarity)
const semanticResults = await this.semanticVectorSearch(query, userId, threshold, notebookId)
// 3. Reciprocal Rank Fusion
const fusedResults = await this.reciprocalRankFusion(
keywordResults,
semanticResults
)
// 4. Sort by final score and limit
return fusedResults
.sort((a, b) => b.score - a.score)
.slice(0, limit)
.map(result => ({
...result,
matchType: result.score > 0.8 ? 'exact' : 'related'
}))
} catch (error) {
console.error('Error in hybrid search:', error)
// Fallback to keyword-only search
const keywordResults = await this.keywordSearch(query, userId)
// Fetch note details for keyword results
const noteIds = keywordResults.slice(0, limit).map(r => r.noteId)
const notes = await prisma.note.findMany({
where: { id: { in: noteIds } },
select: {
id: true,
title: true,
content: true,
language: true
}
})
return notes.map(note => ({
noteId: note.id,
title: note.title,
content: note.content,
score: 1.0, // Default score for keyword-only results
matchType: 'related' as const,
language: note.language
}))
}
}
/**
* Keyword search using SQLite LIKE/FTS
*/
private async keywordSearch(
query: string,
userId: string | null,
notebookId?: string // NEW: Filter by notebook (IA5)
): Promise<Array<{ noteId: string; rank: number }>> {
// Build query for case-insensitive search
const searchPattern = `%${query}%`
const notes = await prisma.note.findMany({
where: {
...(userId ? { userId } : {}),
...(notebookId !== undefined ? { notebookId } : {}), // NEW: Notebook filter
OR: [
{ title: { contains: query } },
{ content: { contains: query } }
]
},
select: {
id: true,
title: true,
content: true
}
})
// Simple relevance scoring based on match position and frequency
const results = notes.map(note => {
const title = note.title || ''
const content = note.content || ''
const queryLower = query.toLowerCase()
// Count occurrences
const titleMatches = (title.match(new RegExp(queryLower, 'gi')) || []).length
const contentMatches = (content.match(new RegExp(queryLower, 'gi')) || []).length
// Boost title matches significantly
const titlePosition = title.toLowerCase().indexOf(queryLower)
const contentPosition = content.toLowerCase().indexOf(queryLower)
// Calculate rank (lower is better)
let rank = 100
if (titleMatches > 0) {
rank = titlePosition === 0 ? 1 : 10
rank -= titleMatches * 2
} else if (contentMatches > 0) {
rank = contentPosition < 100 ? 20 : 30
rank -= contentMatches
}
return {
noteId: note.id,
rank
}
})
return results.sort((a, b) => a.rank - b.rank)
}
/**
* Semantic vector search using embeddings
*/
private async semanticVectorSearch(
query: string,
userId: string | null,
threshold: number,
notebookId?: string // NEW: Filter by notebook (IA5)
): Promise<Array<{ noteId: string; rank: number }>> {
try {
// Generate query embedding
const { embedding: queryEmbedding } = await embeddingService.generateEmbedding(query)
// Fetch all user's notes with embeddings
const notes = await prisma.note.findMany({
where: {
...(userId ? { userId } : {}),
...(notebookId !== undefined ? { notebookId } : {}), // NEW: Notebook filter
embedding: { not: null }
},
select: {
id: true,
embedding: true
}
})
if (notes.length === 0) {
return []
}
// Calculate similarities for all notes
const similarities = notes.map(note => {
const noteEmbedding = embeddingService.deserialize(note.embedding || '[]')
const similarity = embeddingService.calculateCosineSimilarity(
queryEmbedding,
noteEmbedding
)
return {
noteId: note.id,
similarity
}
})
// Filter by threshold and convert to rank
return similarities
.filter(s => s.similarity >= threshold)
.sort((a, b) => b.similarity - a.similarity)
.map((s, index) => ({
noteId: s.noteId,
rank: index + 1 // 1-based rank
}))
} catch (error) {
console.error('Error in semantic vector search:', error)
return []
}
}
/**
* Reciprocal Rank Fusion algorithm
* Combines multiple ranked lists into a single ranking
* Formula: RRF(score) = 1 / (k + rank)
* k = 60 (default, prevents high rank from dominating)
*/
private async reciprocalRankFusion(
keywordResults: Array<{ noteId: string; rank: number }>,
semanticResults: Array<{ noteId: string; rank: number }>
): Promise<SearchResult[]> {
const scores = new Map<string, number>()
// Add keyword scores
for (const result of keywordResults) {
const rrfScore = 1 / (this.RRF_K + result.rank)
scores.set(result.noteId, (scores.get(result.noteId) || 0) + rrfScore)
}
// Add semantic scores
for (const result of semanticResults) {
const rrfScore = 1 / (this.RRF_K + result.rank)
scores.set(result.noteId, (scores.get(result.noteId) || 0) + rrfScore)
}
// Fetch note details
const noteIds = Array.from(scores.keys())
const notes = await prisma.note.findMany({
where: { id: { in: noteIds } },
select: {
id: true,
title: true,
content: true,
language: true
}
})
// Combine scores with note details
return notes.map(note => ({
noteId: note.id,
title: note.title,
content: note.content,
score: scores.get(note.id) || 0,
matchType: 'related' as const,
language: note.language
}))
}
/**
* Generate or update embedding for a note
* Called when note is created or significantly updated
*/
async indexNote(noteId: string): Promise<void> {
try {
const note = await prisma.note.findUnique({
where: { id: noteId },
select: { content: true, embedding: true, lastAiAnalysis: true }
})
if (!note) {
throw new Error('Note not found')
}
// Check if embedding needs regeneration
const shouldRegenerate = embeddingService.shouldRegenerateEmbedding(
note.content,
note.embedding,
note.lastAiAnalysis
)
if (!shouldRegenerate) {
return
}
// Generate new embedding
const { embedding } = await embeddingService.generateEmbedding(note.content)
// Save to database
await prisma.note.update({
where: { id: noteId },
data: {
embedding: embeddingService.serialize(embedding),
lastAiAnalysis: new Date()
}
})
} catch (error) {
console.error(`Error indexing note ${noteId}:`, error)
throw error
}
}
/**
* Batch index multiple notes (for initial migration or bulk updates)
*/
async indexBatchNotes(noteIds: string[]): Promise<void> {
const BATCH_SIZE = 10 // Process in batches to avoid overwhelming
for (let i = 0; i < noteIds.length; i += BATCH_SIZE) {
const batch = noteIds.slice(i, i + BATCH_SIZE)
await Promise.allSettled(
batch.map(noteId => this.indexNote(noteId))
)
}
}
}
// Singleton instance
export const semanticSearchService = new SemanticSearchService()

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@@ -0,0 +1,182 @@
/**
* Title Suggestion Service
* Generates intelligent title suggestions based on note content
*/
import { createOpenAI } from '@ai-sdk/openai'
import { generateText } from 'ai'
import { LanguageDetectionService } from './language-detection.service'
// Helper to get AI model for text generation
function getTextGenerationModel() {
const apiKey = process.env.OPENAI_API_KEY
if (!apiKey) {
throw new Error('OPENAI_API_KEY not configured for title generation')
}
const openai = createOpenAI({ apiKey })
return openai('gpt-4o-mini')
}
export interface TitleSuggestion {
title: string
confidence: number // 0-100
reasoning?: string // Why this title was suggested
}
export class TitleSuggestionService {
private languageDetection: LanguageDetectionService
constructor() {
this.languageDetection = new LanguageDetectionService()
}
/**
* Generate 3 title suggestions for a note
* Uses interface language (from user settings) for prompts
*/
async generateSuggestions(noteContent: string): Promise<TitleSuggestion[]> {
// Detect language of the note content
const { language: contentLanguage } = await this.languageDetection.detectLanguage(noteContent)
try {
const model = getTextGenerationModel()
// System prompt - explains what to do
const systemPrompt = `You are an expert title generator for a note-taking application.
Your task is to generate 3 distinct, engaging titles that capture the essence of the user's note.
Requirements:
- Generate EXACTLY 3 titles
- Each title should be 3-8 words
- Titles should be concise but descriptive
- Each title should have a different style:
1. Direct/Summary style - What the note is about
2. Question style - Posing a question the note addresses
3. Creative/Metaphorical style - Using imagery or analogy
- Return titles in the SAME LANGUAGE as the user's note
- Be helpful and avoid generic titles like "My Note" or "Untitled"
Output Format (JSON):
{
"suggestions": [
{ "title": "...", "confidence": 85, "reasoning": "..." },
{ "title": "...", "confidence": 80, "reasoning": "..." },
{ "title": "...", "confidence": 75, "reasoning": "..." }
]
}`
// User prompt with language context
const userPrompt = `Generate 3 title suggestions for this note:
${noteContent}
Note language detected: ${contentLanguage}
Respond with titles in ${contentLanguage} (same language as the note).`
const { text } = await generateText({
model,
system: systemPrompt,
prompt: userPrompt,
temperature: 0.7
})
// Parse JSON response
const response = JSON.parse(text)
if (!response.suggestions || !Array.isArray(response.suggestions)) {
throw new Error('Invalid response format')
}
// Validate and limit to exactly 3 suggestions
const suggestions = response.suggestions
.slice(0, 3)
.filter((s: any) => s.title && typeof s.title === 'string')
.map((s: any) => ({
title: s.title.trim(),
confidence: Math.min(100, Math.max(0, s.confidence || 75)),
reasoning: s.reasoning || ''
}))
// Ensure we always return exactly 3 suggestions
while (suggestions.length < 3) {
suggestions.push({
title: this.generateFallbackTitle(noteContent, contentLanguage),
confidence: 60,
reasoning: 'Generated fallback title'
})
}
return suggestions
} catch (error) {
console.error('Error generating title suggestions:', error)
// Fallback to simple extraction
return this.generateFallbackSuggestions(noteContent, contentLanguage)
}
}
/**
* Generate fallback title from first few meaningful words
*/
private generateFallbackTitle(content: string, language: string): string {
const words = content.split(/\s+/).filter(w => w.length > 3)
if (words.length === 0) {
return language === 'fr' ? 'Note sans titre' : 'Untitled Note'
}
// Take first 3-5 meaningful words
const titleWords = words.slice(0, Math.min(5, words.length))
return titleWords.join(' ').charAt(0).toUpperCase() + titleWords.join(' ').slice(1)
}
/**
* Generate fallback suggestions when AI fails
*/
private generateFallbackSuggestions(content: string, language: string): TitleSuggestion[] {
const baseTitle = this.generateFallbackTitle(content, language)
return [
{
title: baseTitle,
confidence: 70,
reasoning: 'Extracted from note content'
},
{
title: language === 'fr'
? `Réflexions sur ${baseTitle.toLowerCase()}`
: `Thoughts on ${baseTitle.toLowerCase()}`,
confidence: 65,
reasoning: 'Contextual variation'
},
{
title: language === 'fr'
? `${baseTitle}: Points clés`
: `${baseTitle}: Key Points`,
confidence: 60,
reasoning: 'Summary style'
}
]
}
/**
* Save selected title to note metadata
*/
async recordFeedback(
noteId: string,
selectedTitle: string,
allSuggestions: TitleSuggestion[]
): Promise<void> {
// This will be implemented in Phase 3 when we add feedback collection
// For now, we just log it
// TODO: In Phase 3, save to AiFeedback table for:
// - Improving future suggestions
// - Building user preference model
// - Computing confidence scores
}
}
// Singleton instance
export const titleSuggestionService = new TitleSuggestionService()

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@@ -3,6 +3,11 @@ export interface TagSuggestion {
confidence: number;
}
export interface TitleSuggestion {
title: string;
confidence: number;
}
export interface AIProvider {
/**
* Analyse le contenu et suggère des tags pertinents.
@@ -13,6 +18,16 @@ export interface AIProvider {
* Génère un vecteur d'embeddings pour la recherche sémantique.
*/
getEmbeddings(text: string): Promise<number[]>;
/**
* Génère des suggestions de titres basées sur le contenu.
*/
generateTitles(prompt: string): Promise<TitleSuggestion[]>;
/**
* Génère du texte basé sur un prompt.
*/
generateText(prompt: string): Promise<string>;
}
export type AIProviderType = 'openai' | 'ollama';