'use client'

import { useEffect, useState } from 'react'
import { useLanguage } from '@/lib/i18n'
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from '@/components/ui/dialog'
import { getConsent, setConsent } from '@/lib/consent/cookie-consent'
import { toast } from 'sonner'

interface CookiePreferencesDialogProps {
  open: boolean
  onOpenChange: (open: boolean) => void
}

export function CookiePreferencesDialog({ open, onOpenChange }: CookiePreferencesDialogProps) {
  const { t } = useLanguage()
  const [analytics, setAnalytics] = useState(false)

  useEffect(() => {
    if (!open) return
    const current = getConsent()
    setAnalytics(current?.analytics ?? false)
  }, [open])

  const handleSave = () => {
    setConsent({ analytics, marketing: false })
    toast.success(t('consent.preferences.saved'))
    onOpenChange(false)
  }

  return (
    <Dialog open={open} onOpenChange={onOpenChange}>
      <DialogContent className="max-w-lg border-border bg-memento-paper dark:bg-background">
        <DialogHeader>
          <DialogTitle className="font-memento-serif text-xl text-ink">
            {t('consent.preferences.title')}
          </DialogTitle>
          <DialogDescription className="text-[11px] text-concrete leading-relaxed">
            {t('consent.preferences.description')}
          </DialogDescription>
        </DialogHeader>

        <div className="space-y-6 py-2">
          <CategoryRow
            title={t('consent.preferences.necessaryTitle')}
            description={t('consent.preferences.necessaryDesc')}
            alwaysOnLabel={t('consent.preferences.alwaysOn')}
            locked
            checked
          />
          <CategoryRow
            title={t('consent.preferences.analyticsTitle')}
            description={t('consent.preferences.analyticsDesc')}
            checked={analytics}
            onChange={setAnalytics}
          />
        </div>

        <DialogFooter className="gap-2 sm:gap-2">
          <button
            type="button"
            onClick={() => onOpenChange(false)}
            className="px-5 py-2.5 text-[10px] font-bold uppercase tracking-[0.2em] text-concrete hover:text-ink transition-colors"
          >
            {t('consent.preferences.cancel')}
          </button>
          <button
            type="button"
            onClick={handleSave}
            className="px-6 py-2.5 bg-foreground text-background rounded-xl text-[10px] font-bold uppercase tracking-[0.2em] hover:opacity-90 transition-opacity"
          >
            {t('consent.preferences.save')}
          </button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  )
}

function CategoryRow({
  title,
  description,
  checked,
  onChange,
  locked,
  alwaysOnLabel,
}: {
  title: string
  description: string
  checked: boolean
  onChange?: (v: boolean) => void
  locked?: boolean
  alwaysOnLabel?: string
}) {
  return (
    <div className="flex items-start justify-between gap-4 border-b border-border/40 pb-5 last:border-0 last:pb-0">
      <div className="space-y-1 pe-4">
        <p className="text-xs font-bold text-ink">{title}</p>
        <p className="text-[10px] text-concrete leading-relaxed">{description}</p>
        {locked && alwaysOnLabel && (
          <p className="text-[9px] font-bold uppercase tracking-widest text-concrete/80">{alwaysOnLabel}</p>
        )}
      </div>
      <label
        className={`relative inline-flex shrink-0 items-center ${locked ? 'opacity-50 pointer-events-none' : 'cursor-pointer'}`}
      >
        <input
          type="checkbox"
          className="sr-only peer"
          checked={checked}
          disabled={locked}
          onChange={(e) => onChange?.(e.target.checked)}
        />
        <div className="w-11 h-6 bg-gray-200 dark:bg-white/10 rounded-full peer peer-checked:after:translate-x-[20px] after:content-[''] after:absolute after:top-[4px] after:left-[4px] after:bg-white after:rounded-full after:h-4 after:w-4 after:transition-all peer-checked:bg-ink" />
      </label>
    </div>
  )
}