'use client';

import { useState } from 'react';
import { useRouter } from 'next/navigation';
import { useForm } from 'react-hook-form';
import { zodResolver } from '@hookform/resolvers/zod';
import { z } from 'zod';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from '@/components/ui/form';
import { useToast } from '@/hooks/use-toast';

const loginSchema = z.object({
	email: z.string().email('Please enter a valid email address'),
	password: z.string().min(6, 'Password must be at least 6 characters'),
});

type LoginForm = z.infer<typeof loginSchema>;

export function LoginForm() {
	const [isLoading, setIsLoading] = useState(false);
	const router = useRouter();
	const { toast } = useToast();

	const form = useForm<LoginForm>({
		resolver: zodResolver(loginSchema),
		defaultValues: {
			email: '',
			password: '',
		},
	});

	const onSubmit = async (data: LoginForm) => {
		setIsLoading(true);

		try {
			const response = await fetch('/api/auth/login', {
				method: 'POST',
				headers: {
					'Content-Type': 'application/json',
				},
				body: JSON.stringify(data),
			});

			const result = await response.json();

			if (!response.ok) {
				throw new Error(result.error || 'Login failed');
			}

			toast({
				title: 'Welcome back!',
				description: "You've been successfully logged in.",
			});

			// Redirect based on user role
			if (result.user.role === 'admin') {
				router.push('/admin');
			} else {
				router.push('/dashboard');
			}

			// Refresh the page to update auth state
			router.refresh();
		} catch (error) {
			toast({
				title: 'Login failed',
				description: error instanceof Error ? error.message : 'An unexpected error occurred',
				variant: 'destructive',
			});
		} finally {
			setIsLoading(false);
		}
	};

	return (
		<Card className='w-full max-w-md mx-auto'>
			<CardHeader className='space-y-1'>
				<CardTitle className='text-2xl text-center'>Welcome back</CardTitle>
				<CardDescription className='text-center'>Enter your credentials to access your account</CardDescription>
			</CardHeader>
			<CardContent>
				<Form {...form}>
					<form onSubmit={form.handleSubmit(onSubmit)} className='space-y-4'>
						<FormField
							control={form.control}
							name='email'
							render={({ field }) => (
								<FormItem>
									<FormLabel>Email</FormLabel>
									<FormControl>
										<Input
											placeholder='Enter your email'
											type='email'
											autoComplete='email'
											{...field}
										/>
									</FormControl>
									<FormMessage />
								</FormItem>
							)}
						/>

						<FormField
							control={form.control}
							name='password'
							render={({ field }) => (
								<FormItem>
									<FormLabel>Password</FormLabel>
									<FormControl>
										<Input
											placeholder='Enter your password'
											type='password'
											autoComplete='current-password'
											{...field}
										/>
									</FormControl>
									<FormMessage />
								</FormItem>
							)}
						/>

						<Button type='submit' className='w-full' disabled={isLoading}>
							{isLoading ? 'Signing in...' : 'Sign in'}
						</Button>
					</form>
				</Form>
			</CardContent>
		</Card>
	);
}