'use client';

import { useState } from 'react';
import Link from 'next/link';
import { useRouter } from 'next/navigation';
import { useForm } from 'react-hook-form';
import { zodResolver } from '@hookform/resolvers/zod';
import { Loader2 } from 'lucide-react';

import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from '@/components/ui/card';
import { OAuthButtons } from '@/components/auth/oauth-buttons';
import { loginSchema, type LoginFormData } from '@/lib/validations/auth';
import { useAuthStore } from '@/lib/auth-store';

export default function LoginPage() {
  const router = useRouter();
  const { login, isLoading, error, clearError } = useAuthStore();
  const [showPassword, setShowPassword] = useState(false);

  const {
    register,
    handleSubmit,
    formState: { errors },
  } = useForm<LoginFormData>({
    resolver: zodResolver(loginSchema),
  });

  const onSubmit = async (data: LoginFormData) => {
    try {
      await login(data);
      router.push('/');
    } catch {
      // Error is handled by the store
    }
  };

  return (
    <Card>
      <CardHeader className="space-y-1 text-center">
        <CardTitle className="text-2xl font-bold">Đăng nhập</CardTitle>
        <CardDescription>Nhập số điện thoại và mật khẩu để đăng nhập</CardDescription>
      </CardHeader>
      <CardContent>
        <form onSubmit={handleSubmit(onSubmit)} className="space-y-4">
          {error && (
            <div className="rounded-md bg-destructive/10 p-3 text-sm text-destructive" role="alert">
              {error}
              <button type="button" onClick={clearError} className="ml-2 font-medium underline">
                Bỏ qua
              </button>
            </div>
          )}

          <div className="space-y-2">
            <Label htmlFor="phone">Số điện thoại</Label>
            <Input
              id="phone"
              type="tel"
              placeholder="0912345678"
              autoComplete="tel"
              {...register('phone')}
              aria-invalid={!!errors.phone}
            />
            {errors.phone && (
              <p className="text-sm text-destructive" role="alert">{errors.phone.message}</p>
            )}
          </div>

          <div className="space-y-2">
            <div className="flex items-center justify-between">
              <Label htmlFor="password">Mật khẩu</Label>
              <button
                type="button"
                className="text-xs text-muted-foreground hover:text-primary"
                onClick={() => setShowPassword(!showPassword)}
              >
                {showPassword ? 'Ẩn' : 'Hiện'}
              </button>
            </div>
            <Input
              id="password"
              type={showPassword ? 'text' : 'password'}
              placeholder="Nhập mật khẩu"
              autoComplete="current-password"
              {...register('password')}
              aria-invalid={!!errors.password}
            />
            {errors.password && (
              <p className="text-sm text-destructive" role="alert">{errors.password.message}</p>
            )}
          </div>

          <Button type="submit" className="w-full" disabled={isLoading}>
            {isLoading && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
            Đăng nhập
          </Button>
        </form>

        <div className="relative my-4">
          <div className="absolute inset-0 flex items-center">
            <span className="w-full border-t" />
          </div>
          <div className="relative flex justify-center text-xs uppercase">
            <span className="bg-card px-2 text-muted-foreground">Hoặc đăng nhập với</span>
          </div>
        </div>

        <OAuthButtons />
      </CardContent>
      <CardFooter className="justify-center">
        <p className="text-sm text-muted-foreground">
          Chưa có tài khoản?{' '}
          <Link href="/register" className="font-medium text-primary hover:underline">
            Đăng ký
          </Link>
        </p>
      </CardFooter>
    </Card>
  );
}