'use client'

import { Button } from '@/components/ui/button'
import { Input } from '@/components/ui/input'
import { Checkbox } from '@/components/ui/checkbox'
import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from '@/components/ui/card'
import { Label } from '@/components/ui/label'
import { updateSystemConfig, testSMTP } from '@/app/actions/admin-settings'
import { getOllamaModels } from '@/app/actions/ollama'
import { toast } from 'sonner'
import { useState, useEffect, useCallback } from 'react'
import Link from 'next/link'
import { TestTube, ExternalLink, RefreshCw } from 'lucide-react'
import { useLanguage } from '@/lib/i18n'

type AIProvider = 'ollama' | 'openai' | 'custom'

interface AvailableModels {
  tags: string[]
  embeddings: string[]
}

const MODELS_2026 = {
  // Removed hardcoded Ollama models in favor of dynamic fetching
  openai: {
    tags: ['gpt-4o', 'gpt-4o-mini', 'gpt-4-turbo', 'gpt-4', 'gpt-3.5-turbo'],
    embeddings: ['text-embedding-3-small', 'text-embedding-3-large', 'text-embedding-ada-002']
  },
  custom: {
    tags: ['gpt-4o-mini', 'gpt-4o', 'claude-3-haiku', 'claude-3-sonnet', 'llama-3.1-8b'],
    embeddings: ['text-embedding-3-small', 'text-embedding-3-large', 'text-embedding-ada-002']
  }
}

export function AdminSettingsForm({ config }: { config: Record<string, string> }) {
  const { t } = useLanguage()
  const [isSaving, setIsSaving] = useState(false)
  const [isTesting, setIsTesting] = useState(false)

  // Local state for Checkbox
  const [allowRegister, setAllowRegister] = useState(config.ALLOW_REGISTRATION !== 'false')
  const [smtpSecure, setSmtpSecure] = useState(config.SMTP_SECURE === 'true')
  const [smtpIgnoreCert, setSmtpIgnoreCert] = useState(config.SMTP_IGNORE_CERT === 'true')

  // AI Provider state - separated for tags and embeddings
  const [tagsProvider, setTagsProvider] = useState<AIProvider>((config.AI_PROVIDER_TAGS as AIProvider) || 'ollama')
  const [embeddingsProvider, setEmbeddingsProvider] = useState<AIProvider>((config.AI_PROVIDER_EMBEDDING as AIProvider) || 'ollama')

  // Selected Models State (Controlled Inputs)
  const [selectedTagsModel, setSelectedTagsModel] = useState<string>(config.AI_MODEL_TAGS || '')
  const [selectedEmbeddingModel, setSelectedEmbeddingModel] = useState<string>(config.AI_MODEL_EMBEDDING || '')


  // Dynamic Models State
  const [ollamaTagsModels, setOllamaTagsModels] = useState<string[]>([])
  const [ollamaEmbeddingsModels, setOllamaEmbeddingsModels] = useState<string[]>([])
  const [isLoadingTagsModels, setIsLoadingTagsModels] = useState(false)
  const [isLoadingEmbeddingsModels, setIsLoadingEmbeddingsModels] = useState(false)

  // Sync state with config
  useEffect(() => {
    setAllowRegister(config.ALLOW_REGISTRATION !== 'false')
    setSmtpSecure(config.SMTP_SECURE === 'true')
    setSmtpIgnoreCert(config.SMTP_IGNORE_CERT === 'true')
    setTagsProvider((config.AI_PROVIDER_TAGS as AIProvider) || 'ollama')
    setEmbeddingsProvider((config.AI_PROVIDER_EMBEDDING as AIProvider) || 'ollama')
    setSelectedTagsModel(config.AI_MODEL_TAGS || '')
    setSelectedEmbeddingModel(config.AI_MODEL_EMBEDDING || '')
  }, [config])

  // Fetch Ollama models
  const fetchOllamaModels = useCallback(async (type: 'tags' | 'embeddings', url: string) => {
    if (!url) return

    if (type === 'tags') setIsLoadingTagsModels(true)
    else setIsLoadingEmbeddingsModels(true)

    try {
      const result = await getOllamaModels(url)

      if (result.success) {
        if (type === 'tags') setOllamaTagsModels(result.models)
        else setOllamaEmbeddingsModels(result.models)
      } else {
        toast.error(`Failed to fetch Ollama models: ${result.error}`)
      }
    } catch (error) {
      console.error(error)
      toast.error('Failed to fetch Ollama models')
    } finally {
      if (type === 'tags') setIsLoadingTagsModels(false)
      else setIsLoadingEmbeddingsModels(false)
    }
  }, [])

  // Initial fetch for Ollama models if provider is selected
  useEffect(() => {
    if (tagsProvider === 'ollama') {
      const url = config.OLLAMA_BASE_URL_TAGS || config.OLLAMA_BASE_URL || 'http://localhost:11434'
      fetchOllamaModels('tags', url)
    }
  }, [tagsProvider, config.OLLAMA_BASE_URL_TAGS, config.OLLAMA_BASE_URL, fetchOllamaModels])

  useEffect(() => {
    if (embeddingsProvider === 'ollama') {
      const url = config.OLLAMA_BASE_URL_EMBEDDING || config.OLLAMA_BASE_URL || 'http://localhost:11434'
      fetchOllamaModels('embeddings', url)
    }
  }, [embeddingsProvider, config.OLLAMA_BASE_URL_EMBEDDING, config.OLLAMA_BASE_URL, fetchOllamaModels])

  const handleSaveSecurity = async (formData: FormData) => {
    setIsSaving(true)
    const data = {
      ALLOW_REGISTRATION: allowRegister ? 'true' : 'false',
    }

    const result = await updateSystemConfig(data)
    setIsSaving(false)

    if (result.error) {
      toast.error(t('admin.security.updateFailed'))
    } else {
      toast.success(t('admin.security.updateSuccess'))
    }
  }

  const handleSaveAI = async (formData: FormData) => {
    setIsSaving(true)
    const data: Record<string, string> = {}

    try {
      const tagsProv = formData.get('AI_PROVIDER_TAGS') as AIProvider
      if (!tagsProv) throw new Error(t('admin.ai.providerTagsRequired'))
      data.AI_PROVIDER_TAGS = tagsProv

      const tagsModel = formData.get('AI_MODEL_TAGS') as string
      if (tagsModel) data.AI_MODEL_TAGS = tagsModel

      if (tagsProv === 'ollama') {
        const ollamaUrl = formData.get('OLLAMA_BASE_URL_TAGS') as string
        if (ollamaUrl) data.OLLAMA_BASE_URL_TAGS = ollamaUrl
      } else if (tagsProv === 'openai') {
        const openaiKey = formData.get('OPENAI_API_KEY') as string
        if (openaiKey) data.OPENAI_API_KEY = openaiKey
      } else if (tagsProv === 'custom') {
        const customKey = formData.get('CUSTOM_OPENAI_API_KEY_TAGS') as string
        const customUrl = formData.get('CUSTOM_OPENAI_BASE_URL_TAGS') as string
        if (customKey) data.CUSTOM_OPENAI_API_KEY = customKey
        if (customUrl) data.CUSTOM_OPENAI_BASE_URL = customUrl
      }

      const embedProv = formData.get('AI_PROVIDER_EMBEDDING') as AIProvider
      if (!embedProv) throw new Error(t('admin.ai.providerEmbeddingRequired'))
      data.AI_PROVIDER_EMBEDDING = embedProv

      const embedModel = formData.get('AI_MODEL_EMBEDDING') as string
      if (embedModel) data.AI_MODEL_EMBEDDING = embedModel

      if (embedProv === 'ollama') {
        const ollamaUrl = formData.get('OLLAMA_BASE_URL_EMBEDDING') as string
        if (ollamaUrl) data.OLLAMA_BASE_URL_EMBEDDING = ollamaUrl
      } else if (embedProv === 'openai') {
        const openaiKey = formData.get('OPENAI_API_KEY') as string
        if (openaiKey) data.OPENAI_API_KEY = openaiKey
      } else if (embedProv === 'custom') {
        const customKey = formData.get('CUSTOM_OPENAI_API_KEY_EMBEDDING') as string
        const customUrl = formData.get('CUSTOM_OPENAI_BASE_URL_EMBEDDING') as string
        if (customKey) data.CUSTOM_OPENAI_API_KEY = customKey
        if (customUrl) data.CUSTOM_OPENAI_BASE_URL = customUrl
      }


      const result = await updateSystemConfig(data)
      setIsSaving(false)

      if (result.error) {
        toast.error(t('admin.ai.updateFailed') + ': ' + result.error)
      } else {
        toast.success(t('admin.ai.updateSuccess'))
        setTagsProvider(tagsProv)
        setEmbeddingsProvider(embedProv)

        // Refresh models after save if Ollama is selected
        if (tagsProv === 'ollama') {
          const url = data.OLLAMA_BASE_URL_TAGS || config.OLLAMA_BASE_URL || 'http://localhost:11434'
          fetchOllamaModels('tags', url)
        }
        if (embedProv === 'ollama') {
          const url = data.OLLAMA_BASE_URL_EMBEDDING || config.OLLAMA_BASE_URL || 'http://localhost:11434'
          fetchOllamaModels('embeddings', url)
        }
      }
    } catch (error: any) {
      setIsSaving(false)
      toast.error(t('general.error') + ': ' + error.message)
    }
  }

  const handleSaveSMTP = async (formData: FormData) => {
    setIsSaving(true)
    const data = {
      SMTP_HOST: formData.get('SMTP_HOST') as string,
      SMTP_PORT: formData.get('SMTP_PORT') as string,
      SMTP_USER: formData.get('SMTP_USER') as string,
      SMTP_PASS: formData.get('SMTP_PASS') as string,
      SMTP_FROM: formData.get('SMTP_FROM') as string,
      SMTP_IGNORE_CERT: smtpIgnoreCert ? 'true' : 'false',
      SMTP_SECURE: smtpSecure ? 'true' : 'false',
    }

    const result = await updateSystemConfig(data)
    setIsSaving(false)

    if (result.error) {
      toast.error(t('admin.smtp.updateFailed'))
    } else {
      toast.success(t('admin.smtp.updateSuccess'))
    }
  }

  const handleTestEmail = async () => {
    setIsTesting(true)
    try {
      const result: any = await testSMTP()
      if (result.success) {
        toast.success(t('admin.smtp.testSuccess'))
      } else {
        toast.error(t('admin.smtp.testFailed', { error: result.error }))
      }
    } catch (e: any) {
      toast.error(t('general.error') + ': ' + e.message)
    } finally {
      setIsTesting(false)
    }
  }

  return (
    <div className="space-y-6">
      <Card>
        <CardHeader>
          <CardTitle>{t('admin.security.title')}</CardTitle>
          <CardDescription>{t('admin.security.description')}</CardDescription>
        </CardHeader>
        <form action={handleSaveSecurity}>
          <CardContent className="space-y-4">
            <div className="flex items-center space-x-2">
              <Checkbox
                id="ALLOW_REGISTRATION"
                checked={allowRegister}
                onCheckedChange={(c) => setAllowRegister(!!c)}
              />
              <label
                htmlFor="ALLOW_REGISTRATION"
                className="text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70"
              >
                {t('admin.security.allowPublicRegistration')}
              </label>
            </div>
            <p className="text-xs text-muted-foreground">
              {t('admin.security.allowPublicRegistrationDescription')}
            </p>
          </CardContent>
          <CardFooter>
            <Button type="submit" disabled={isSaving}>{t('admin.security.title')}</Button>
          </CardFooter>
        </form>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle>{t('admin.ai.title')}</CardTitle>
          <CardDescription>{t('admin.ai.description')}</CardDescription>
        </CardHeader>
        <form action={handleSaveAI}>
          <CardContent className="space-y-6">
            <div className="space-y-4 p-4 border rounded-lg bg-primary/5 dark:bg-primary/10">
              <h3 className="text-base font-semibold flex items-center gap-2">
                <span className="text-primary">🏷️</span> {t('admin.ai.tagsGenerationProvider')}
              </h3>
              <p className="text-xs text-muted-foreground">{t('admin.ai.tagsGenerationDescription')}</p>

              <div className="space-y-2">
                <Label htmlFor="AI_PROVIDER_TAGS">{t('admin.ai.provider')}</Label>
                <select
                  id="AI_PROVIDER_TAGS"
                  name="AI_PROVIDER_TAGS"
                  value={tagsProvider}
                  onChange={(e) => setTagsProvider(e.target.value as AIProvider)}
                  className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
                >
                  <option value="ollama">{t('admin.ai.providerOllamaOption')}</option>
                  <option value="openai">{t('admin.ai.providerOpenAIOption')}</option>
                  <option value="custom">{t('admin.ai.providerCustomOption')}</option>
                </select>
              </div>

              {tagsProvider === 'ollama' && (
                <div className="space-y-3">
                  <div className="space-y-2">
                    <Label htmlFor="OLLAMA_BASE_URL_TAGS">{t('admin.ai.baseUrl')}</Label>
                    <div className="flex gap-2">
                      <Input
                        id="OLLAMA_BASE_URL_TAGS"
                        name="OLLAMA_BASE_URL_TAGS"
                        defaultValue={config.OLLAMA_BASE_URL_TAGS || config.OLLAMA_BASE_URL || 'http://localhost:11434'}
                        placeholder="http://localhost:11434"
                      />
                      <Button
                        type="button"
                        size="icon"
                        variant="outline"
                        onClick={() => {
                          const input = document.getElementById('OLLAMA_BASE_URL_TAGS') as HTMLInputElement
                          fetchOllamaModels('tags', input.value)
                        }}
                        disabled={isLoadingTagsModels}
                        title="Refresh Models"
                      >
                        <RefreshCw className={`h-4 w-4 ${isLoadingTagsModels ? 'animate-spin' : ''}`} />
                      </Button>
                    </div>
                  </div>
                  <div className="space-y-2">
                    <Label htmlFor="AI_MODEL_TAGS_OLLAMA">{t('admin.ai.model')}</Label>
                    <select
                      id="AI_MODEL_TAGS_OLLAMA"
                      name="AI_MODEL_TAGS_OLLAMA"
                      value={selectedTagsModel}
                      onChange={(e) => setSelectedTagsModel(e.target.value)}
                      className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
                    >
                      {ollamaTagsModels.length > 0 ? (
                        ollamaTagsModels.map((model) => (
                          <option key={model} value={model}>{model}</option>
                        ))
                      ) : (
                        <option value={selectedTagsModel || 'granite4:latest'}>{selectedTagsModel || 'granite4:latest'} {t('admin.ai.saved')}</option>
                      )}
                    </select>
                    <p className="text-xs text-muted-foreground">
                      {isLoadingTagsModels ? 'Fetching models...' : t('admin.ai.selectOllamaModel')}
                    </p>
                  </div>
                </div>
              )}

              {tagsProvider === 'openai' && (
                <div className="space-y-3">
                  <div className="space-y-2">
                    <Label htmlFor="OPENAI_API_KEY">{t('admin.ai.apiKey')}</Label>
                    <Input id="OPENAI_API_KEY" name="OPENAI_API_KEY" type="password" defaultValue={config.OPENAI_API_KEY || ''} placeholder="sk-..." />
                    <p className="text-xs text-muted-foreground">{t('admin.ai.openAIKeyDescription')}</p>
                  </div>
                  <div className="space-y-2">
                    <Label htmlFor="AI_MODEL_TAGS_OPENAI">{t('admin.ai.model')}</Label>
                    <select
                      id="AI_MODEL_TAGS_OPENAI"
                      name="AI_MODEL_TAGS_OPENAI"
                      value={selectedTagsModel}
                      onChange={(e) => setSelectedTagsModel(e.target.value)}
                      className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
                    >
                      {MODELS_2026.openai.tags.map((model) => (
                        <option key={model} value={model}>{model}</option>
                      ))}
                    </select>
                    <p className="text-xs text-muted-foreground"><strong className="text-green-600">gpt-4o-mini</strong> = {t('admin.ai.bestValue')} • <strong className="text-primary">gpt-4o</strong> = {t('admin.ai.bestQuality')}</p>
                  </div>
                </div>
              )}

              {tagsProvider === 'custom' && (
                <div className="space-y-3">
                  <div className="space-y-2">
                    <Label htmlFor="CUSTOM_OPENAI_BASE_URL_TAGS">{t('admin.ai.baseUrl')}</Label>
                    <Input id="CUSTOM_OPENAI_BASE_URL_TAGS" name="CUSTOM_OPENAI_BASE_URL_TAGS" defaultValue={config.CUSTOM_OPENAI_BASE_URL || ''} placeholder="https://api.example.com/v1" />
                  </div>
                  <div className="space-y-2">
                    <Label htmlFor="CUSTOM_OPENAI_API_KEY_TAGS">{t('admin.ai.apiKey')}</Label>
                    <Input id="CUSTOM_OPENAI_API_KEY_TAGS" name="CUSTOM_OPENAI_API_KEY_TAGS" type="password" defaultValue={config.CUSTOM_OPENAI_API_KEY || ''} placeholder="sk-..." />
                  </div>
                  <div className="space-y-2">
                    <Label htmlFor="AI_MODEL_TAGS_CUSTOM">{t('admin.ai.model')}</Label>
                    <select
                      id="AI_MODEL_TAGS_CUSTOM"
                      name="AI_MODEL_TAGS_CUSTOM"
                      value={selectedTagsModel}
                      onChange={(e) => setSelectedTagsModel(e.target.value)}
                      className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
                    >
                      {MODELS_2026.custom.tags.map((model) => (
                        <option key={model} value={model}>{model}</option>
                      ))}
                    </select>
                    <p className="text-xs text-muted-foreground">{t('admin.ai.commonModelsDescription')}</p>
                  </div>
                </div>
              )}
            </div>

            <div className="space-y-4 p-4 border rounded-lg bg-green-50/50 dark:bg-green-950/20">
              <h3 className="text-base font-semibold flex items-center gap-2">
                <span className="text-green-600">🔍</span> {t('admin.ai.embeddingsProvider')}
              </h3>
              <p className="text-xs text-muted-foreground">{t('admin.ai.embeddingsDescription')}</p>

              <div className="space-y-2">
                <Label htmlFor="AI_PROVIDER_EMBEDDING">
                  {t('admin.ai.provider')}
                  <span className="ml-2 text-xs text-muted-foreground">
                    (Current: {embeddingsProvider})
                  </span>
                </Label>
                <select
                  id="AI_PROVIDER_EMBEDDING"
                  name="AI_PROVIDER_EMBEDDING"
                  value={embeddingsProvider}
                  onChange={(e) => setEmbeddingsProvider(e.target.value as AIProvider)}
                  className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
                >
                  <option value="ollama">{t('admin.ai.providerOllamaOption')}</option>
                  <option value="openai">{t('admin.ai.providerOpenAIOption')}</option>
                  <option value="custom">{t('admin.ai.providerCustomOption')}</option>
                </select>
                <p className="text-xs text-muted-foreground">
                  Config value: {config.AI_PROVIDER_EMBEDDING || 'Not set (defaults to ollama)'}
                </p>
              </div>

              {embeddingsProvider === 'ollama' && (
                <div className="space-y-3">
                  <div className="space-y-2">
                    <Label htmlFor="OLLAMA_BASE_URL_EMBEDDING">{t('admin.ai.baseUrl')}</Label>
                    <div className="flex gap-2">
                      <Input
                        id="OLLAMA_BASE_URL_EMBEDDING"
                        name="OLLAMA_BASE_URL_EMBEDDING"
                        defaultValue={config.OLLAMA_BASE_URL_EMBEDDING || config.OLLAMA_BASE_URL || 'http://localhost:11434'}
                        placeholder="http://localhost:11434"
                      />
                      <Button
                        type="button"
                        size="icon"
                        variant="outline"
                        onClick={() => {
                          const input = document.getElementById('OLLAMA_BASE_URL_EMBEDDING') as HTMLInputElement
                          fetchOllamaModels('embeddings', input.value)
                        }}
                        disabled={isLoadingEmbeddingsModels}
                        title="Refresh Models"
                      >
                        <RefreshCw className={`h-4 w-4 ${isLoadingEmbeddingsModels ? 'animate-spin' : ''}`} />
                      </Button>
                    </div>
                  </div>
                  <div className="space-y-2">
                    <Label htmlFor="AI_MODEL_EMBEDDING_OLLAMA">{t('admin.ai.model')}</Label>
                    <select
                      id="AI_MODEL_EMBEDDING_OLLAMA"
                      name="AI_MODEL_EMBEDDING_OLLAMA"
                      value={selectedEmbeddingModel}
                      onChange={(e) => setSelectedEmbeddingModel(e.target.value)}
                      className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
                    >
                      {ollamaEmbeddingsModels.length > 0 ? (
                        ollamaEmbeddingsModels.map((model) => (
                          <option key={model} value={model}>{model}</option>
                        ))
                      ) : (
                        <option value={selectedEmbeddingModel || 'embeddinggemma:latest'}>{selectedEmbeddingModel || 'embeddinggemma:latest'} {t('admin.ai.saved')}</option>
                      )}
                    </select>
                    <p className="text-xs text-muted-foreground">
                      {isLoadingEmbeddingsModels ? 'Fetching models...' : t('admin.ai.selectEmbeddingModel')}
                    </p>
                  </div>
                </div>
              )}

              {embeddingsProvider === 'openai' && (
                <div className="space-y-3">
                  <div className="space-y-2">
                    <Label htmlFor="OPENAI_API_KEY">{t('admin.ai.apiKey')}</Label>
                    <Input id="OPENAI_API_KEY" name="OPENAI_API_KEY" type="password" defaultValue={config.OPENAI_API_KEY || ''} placeholder="sk-..." />
                    <p className="text-xs text-muted-foreground">{t('admin.ai.openAIKeyDescription')}</p>
                  </div>
                  <div className="space-y-2">
                    <Label htmlFor="AI_MODEL_EMBEDDING_OPENAI">{t('admin.ai.model')}</Label>
                    <select
                      id="AI_MODEL_EMBEDDING_OPENAI"
                      name="AI_MODEL_EMBEDDING_OPENAI"
                      value={selectedEmbeddingModel}
                      onChange={(e) => setSelectedEmbeddingModel(e.target.value)}
                      className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
                    >
                      {MODELS_2026.openai.embeddings.map((model) => (
                        <option key={model} value={model}>{model}</option>
                      ))}
                    </select>
                    <p className="text-xs text-muted-foreground"><strong className="text-green-600">text-embedding-3-small</strong> = {t('admin.ai.bestValue')} • <strong className="text-primary">text-embedding-3-large</strong> = {t('admin.ai.bestQuality')}</p>
                  </div>
                </div>
              )}

              {embeddingsProvider === 'custom' && (
                <div className="space-y-3">
                  <div className="space-y-2">
                    <Label htmlFor="CUSTOM_OPENAI_BASE_URL_EMBEDDING">{t('admin.ai.baseUrl')}</Label>
                    <Input id="CUSTOM_OPENAI_BASE_URL_EMBEDDING" name="CUSTOM_OPENAI_BASE_URL_EMBEDDING" defaultValue={config.CUSTOM_OPENAI_BASE_URL || ''} placeholder="https://api.example.com/v1" />
                  </div>
                  <div className="space-y-2">
                    <Label htmlFor="CUSTOM_OPENAI_API_KEY_EMBEDDING">{t('admin.ai.apiKey')}</Label>
                    <Input id="CUSTOM_OPENAI_API_KEY_EMBEDDING" name="CUSTOM_OPENAI_API_KEY_EMBEDDING" type="password" defaultValue={config.CUSTOM_OPENAI_API_KEY || ''} placeholder="sk-..." />
                  </div>
                  <div className="space-y-2">
                    <Label htmlFor="AI_MODEL_EMBEDDING_CUSTOM">{t('admin.ai.model')}</Label>
                    <select
                      id="AI_MODEL_EMBEDDING_CUSTOM"
                      name="AI_MODEL_EMBEDDING_CUSTOM"
                      value={selectedEmbeddingModel}
                      onChange={(e) => setSelectedEmbeddingModel(e.target.value)}
                      className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
                    >
                      {MODELS_2026.custom.embeddings.map((model) => (
                        <option key={model} value={model}>{model}</option>
                      ))}
                    </select>
                    <p className="text-xs text-muted-foreground">{t('admin.ai.commonEmbeddingModels')}</p>
                  </div>
                </div>
              )}
            </div>
          </CardContent>
          <CardFooter className="flex justify-between">
            <Button type="submit" disabled={isSaving}>{isSaving ? t('admin.ai.saving') : t('admin.ai.saveSettings')}</Button>
            <Link href="/admin/ai-test">
              <Button type="button" variant="outline" className="gap-2">
                <TestTube className="h-4 w-4" />
                {t('admin.ai.openTestPanel')}
                <ExternalLink className="h-3 w-3" />
              </Button>
            </Link>
          </CardFooter>
        </form>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle>{t('admin.smtp.title')}</CardTitle>
          <CardDescription>{t('admin.smtp.description')}</CardDescription>
        </CardHeader>
        <form action={handleSaveSMTP}>
          <CardContent className="space-y-4">
            <div className="grid grid-cols-2 gap-4">
              <div className="space-y-2">
                <label htmlFor="SMTP_HOST" className="text-sm font-medium">{t('admin.smtp.host')}</label>
                <Input id="SMTP_HOST" name="SMTP_HOST" defaultValue={config.SMTP_HOST || ''} placeholder="smtp.example.com" />
              </div>
              <div className="space-y-2">
                <label htmlFor="SMTP_PORT" className="text-sm font-medium">{t('admin.smtp.port')}</label>
                <Input id="SMTP_PORT" name="SMTP_PORT" defaultValue={config.SMTP_PORT || '587'} placeholder="587" />
              </div>
            </div>

            <div className="space-y-2">
              <label htmlFor="SMTP_USER" className="text-sm font-medium">{t('admin.smtp.username')}</label>
              <Input id="SMTP_USER" name="SMTP_USER" defaultValue={config.SMTP_USER || ''} />
            </div>

            <div className="space-y-2">
              <label htmlFor="SMTP_PASS" className="text-sm font-medium">{t('admin.smtp.password')}</label>
              <Input id="SMTP_PASS" name="SMTP_PASS" type="password" defaultValue={config.SMTP_PASS || ''} />
            </div>

            <div className="space-y-2">
              <label htmlFor="SMTP_FROM" className="text-sm font-medium">{t('admin.smtp.fromEmail')}</label>
              <Input id="SMTP_FROM" name="SMTP_FROM" defaultValue={config.SMTP_FROM || 'noreply@memento.app'} />
            </div>

            <div className="flex items-center space-x-2">
              <Checkbox
                id="SMTP_SECURE"
                checked={smtpSecure}
                onCheckedChange={(c) => setSmtpSecure(!!c)}
              />
              <label
                htmlFor="SMTP_SECURE"
                className="text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70"
              >
                {t('admin.smtp.forceSSL')}
              </label>
            </div>

            <div className="flex items-center space-x-2">
              <Checkbox
                id="SMTP_IGNORE_CERT"
                checked={smtpIgnoreCert}
                onCheckedChange={(c) => setSmtpIgnoreCert(!!c)}
              />
              <label
                htmlFor="SMTP_IGNORE_CERT"
                className="text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70 text-yellow-600"
              >
                {t('admin.smtp.ignoreCertErrors')}
              </label>
            </div>
          </CardContent>
          <CardFooter className="flex justify-between">
            <Button type="submit" disabled={isSaving}>{t('admin.smtp.saveSettings')}</Button>
            <Button type="button" variant="secondary" onClick={handleTestEmail} disabled={isTesting}>
              {isTesting ? t('admin.smtp.sending') : t('admin.smtp.testEmail')}
            </Button>
          </CardFooter>
        </form>
      </Card>
    </div>
  )
}
