// This is your Prisma schema file,
// learn more about it in the docs: https://pris.ly/d/prisma-schema

generator client {
  provider = "prisma-client-js"
  output   = "./client-generated"
}

datasource db {
  provider = "sqlite"
  url      = env("DATABASE_URL")
}

model User {
  id            String    @id @default(cuid())
  name          String?
  email         String    @unique
  emailVerified DateTime?
  password      String?   // Hashed password
  role          String    @default("USER") // "USER" or "ADMIN"
  image         String?
  theme         String    @default("light")
  resetToken       String?   @unique
  resetTokenExpiry DateTime?
  accounts      Account[]
  sessions      Session[]
  notes         Note[]
  labels        Label[]
  receivedShares NoteShare[] @relation("ReceivedShares")
  sentShares     NoteShare[] @relation("SentShares")
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt
}

model Account {
  userId            String
  type              String
  provider          String
  providerAccountId String
  refresh_token     String?
  access_token      String?
  expires_at        Int?
  token_type        String?
  scope             String?
  id_token          String?
  session_state     String?
 
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
 
  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
 
  @@id([provider, providerAccountId])
}
 
model Session {
  sessionToken String   @unique
  userId       String
  expires      DateTime
  user         User     @relation(fields: [userId], references: [id], onDelete: Cascade)
 
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
}
 
model VerificationToken {
  identifier String
  token      String
  expires    DateTime
 
  @@id([identifier, token])
}

model Label {
  id        String   @id @default(cuid())
  name      String   
  color     String   @default("gray")
  userId    String?  // Made optional for migration, but logic will enforce it
  user      User?    @relation(fields: [userId], references: [id], onDelete: Cascade)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  @@unique([name, userId]) // Labels are unique per user
  @@index([userId])
}

model Note {
  id                  String    @id @default(cuid())
  title               String?
  content             String
  color               String    @default("default")
  isPinned            Boolean   @default(false)
  isArchived          Boolean   @default(false)
  type                String    @default("text") // "text" or "checklist"
  checkItems          String?   // For checklist items stored as JSON string
  labels              String?   // Array of label names stored as JSON string
  images              String?   // Array of image URLs stored as JSON string
  links               String?   // Array of link metadata stored as JSON string
  reminder            DateTime? // Reminder date and time
  isReminderDone      Boolean   @default(false)
  reminderRecurrence  String?   // "none", "daily", "weekly", "monthly", "custom"
  reminderLocation    String?   // Location for location-based reminders
  isMarkdown          Boolean   @default(false) // Whether content uses Markdown
  size                String    @default("small") // "small", "medium", "large"
  embedding           String?   // Vector embeddings stored as JSON string for semantic search
  sharedWith           String?   // Array of user IDs (collaborators) stored as JSON string
  userId              String?   // Owner of the note
  user                User?     @relation(fields: [userId], references: [id], onDelete: Cascade)
  shares              NoteShare[] // All share records for this note
  order               Int       @default(0)
  createdAt           DateTime  @default(now())
  updatedAt           DateTime  @updatedAt

  @@index([isPinned])
  @@index([isArchived])
  @@index([order])
  @@index([reminder])
  @@index([userId])
}

model NoteShare {
  id          String    @id @default(cuid())
  noteId      String
  note        Note      @relation(fields: [noteId], references: [id], onDelete: Cascade)
  userId      String
  user        User      @relation("ReceivedShares", fields: [userId], references: [id], onDelete: Cascade)
  sharedBy    String    // User ID who shared the note
  sharer      User      @relation("SentShares", fields: [sharedBy], references: [id], onDelete: Cascade)
  status      String    @default("pending") // "pending", "accepted", "declined", "removed"
  permission  String    @default("view") // "view", "comment", "edit"
  notifiedAt  DateTime?
  respondedAt DateTime?
  createdAt   DateTime  @default(now())
  updatedAt   DateTime  @updatedAt

  @@unique([noteId, userId])
  @@index([userId])
  @@index([status])
  @@index([sharedBy])
}

model SystemConfig {
  key   String @id
  value String
}