"use client";

import { useState } from "react";
import { Button } from "@/components/ui/button";
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import {
  AlertDialog,
  AlertDialogAction,
  AlertDialogCancel,
  AlertDialogContent,
  AlertDialogDescription,
  AlertDialogFooter,
  AlertDialogHeader,
  AlertDialogTitle,
  AlertDialogTrigger,
} from "@/components/ui/alert-dialog";
import { Lock, Eye, EyeOff } from "lucide-react";
import { toast } from "sonner";

export function PasswordCard() {
  const [oldPassword, setOldPassword] = useState("");
  const [newPassword, setNewPassword] = useState("");
  const [confirmPassword, setConfirmPassword] = useState("");
  const [showOldPassword, setShowOldPassword] = useState(false);
  const [showNewPassword, setShowNewPassword] = useState(false);
  const [showConfirmPassword, setShowConfirmPassword] = useState(false);
  const [loading, setLoading] = useState(false);
  const [open, setOpen] = useState(false);

  const handleChangePassword = async () => {
    if (!oldPassword || !newPassword || !confirmPassword) {
      toast.error("Veuillez remplir tous les champs");
      return;
    }

    if (newPassword.length < 4) {
      toast.error("Le mot de passe doit contenir au moins 4 caractères");
      return;
    }

    if (newPassword !== confirmPassword) {
      toast.error("Les mots de passe ne correspondent pas");
      return;
    }

    setLoading(true);
    try {
      const response = await fetch("/api/auth/change-password", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          oldPassword,
          newPassword,
        }),
      });

      const data = await response.json();

      if (data.success) {
        toast.success("Mot de passe modifié avec succès");
        setOldPassword("");
        setNewPassword("");
        setConfirmPassword("");
        setOpen(false);
      } else {
        toast.error(data.error || "Erreur lors du changement de mot de passe");
      }
    } catch (error) {
      console.error("Error changing password:", error);
      toast.error("Erreur lors du changement de mot de passe");
    } finally {
      setLoading(false);
    }
  };

  return (
    <Card>
      <CardHeader>
        <CardTitle className="flex items-center gap-2">
          <Lock className="w-5 h-5" />
          Mot de passe
        </CardTitle>
        <CardDescription>
          Modifiez le mot de passe d'accès à l'application
        </CardDescription>
      </CardHeader>
      <CardContent>
        <AlertDialog open={open} onOpenChange={setOpen}>
          <AlertDialogTrigger asChild>
            <Button variant="outline">Changer le mot de passe</Button>
          </AlertDialogTrigger>
          <AlertDialogContent className="sm:max-w-md">
            <AlertDialogHeader>
              <AlertDialogTitle>Changer le mot de passe</AlertDialogTitle>
              <AlertDialogDescription>
                Entrez votre mot de passe actuel et le nouveau mot de passe.
              </AlertDialogDescription>
            </AlertDialogHeader>
            <div className="space-y-4 py-4">
              <div className="space-y-2">
                <Label htmlFor="old-password">Mot de passe actuel</Label>
                <div className="relative">
                  <Input
                    id="old-password"
                    type={showOldPassword ? "text" : "password"}
                    value={oldPassword}
                    onChange={(e) => setOldPassword(e.target.value)}
                    placeholder="Mot de passe actuel"
                    disabled={loading}
                  />
                  <Button
                    type="button"
                    variant="ghost"
                    size="sm"
                    className="absolute right-0 top-0 h-full px-3 py-2 hover:bg-transparent"
                    onClick={() => setShowOldPassword(!showOldPassword)}
                  >
                    {showOldPassword ? (
                      <EyeOff className="h-4 w-4" />
                    ) : (
                      <Eye className="h-4 w-4" />
                    )}
                  </Button>
                </div>
              </div>
              <div className="space-y-2">
                <Label htmlFor="new-password">Nouveau mot de passe</Label>
                <div className="relative">
                  <Input
                    id="new-password"
                    type={showNewPassword ? "text" : "password"}
                    value={newPassword}
                    onChange={(e) => setNewPassword(e.target.value)}
                    placeholder="Nouveau mot de passe"
                    disabled={loading}
                  />
                  <Button
                    type="button"
                    variant="ghost"
                    size="sm"
                    className="absolute right-0 top-0 h-full px-3 py-2 hover:bg-transparent"
                    onClick={() => setShowNewPassword(!showNewPassword)}
                  >
                    {showNewPassword ? (
                      <EyeOff className="h-4 w-4" />
                    ) : (
                      <Eye className="h-4 w-4" />
                    )}
                  </Button>
                </div>
              </div>
              <div className="space-y-2">
                <Label htmlFor="confirm-password">Confirmer le mot de passe</Label>
                <div className="relative">
                  <Input
                    id="confirm-password"
                    type={showConfirmPassword ? "text" : "password"}
                    value={confirmPassword}
                    onChange={(e) => setConfirmPassword(e.target.value)}
                    placeholder="Confirmer le mot de passe"
                    disabled={loading}
                  />
                  <Button
                    type="button"
                    variant="ghost"
                    size="sm"
                    className="absolute right-0 top-0 h-full px-3 py-2 hover:bg-transparent"
                    onClick={() => setShowConfirmPassword(!showConfirmPassword)}
                  >
                    {showConfirmPassword ? (
                      <EyeOff className="h-4 w-4" />
                    ) : (
                      <Eye className="h-4 w-4" />
                    )}
                  </Button>
                </div>
              </div>
            </div>
            <AlertDialogFooter>
              <AlertDialogCancel disabled={loading}>Annuler</AlertDialogCancel>
              <AlertDialogAction
                onClick={handleChangePassword}
                disabled={loading}
              >
                {loading ? "Modification..." : "Modifier"}
              </AlertDialogAction>
            </AlertDialogFooter>
          </AlertDialogContent>
        </AlertDialog>
      </CardContent>
    </Card>
  );
}