import { useContext, useEffect, type ReactElement } from 'react';
import { useForm } from 'react-hook-form';
import { useNavigate } from 'react-router-dom';
import { toast } from 'sonner';
import { z } from 'zod';
import { zodResolver } from '@hookform/resolvers/zod';
import { AuthContext } from '../providers/auth-guard.js';
import { ROUTES } from '../router/routes.js';
import { Button } from './ui/button.js';
import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from './ui/form.js';
import { Input } from './ui/input.js';

const formSchema = z.object({
  username: z.string().min(2).max(50),
  password: z.string().min(2).max(50),
});

export function LoginPage(): ReactElement {
  const { authService } = useContext(AuthContext);
  useEffect(() => {
    authService.logout();
  }, [authService]);
  const navigate = useNavigate();

  const form = useForm<z.infer<typeof formSchema>>({
    resolver: zodResolver(formSchema),
    defaultValues: {
      username: '',
      password: '',
    },
  });

  function onSubmit(values: z.infer<typeof formSchema>) {
    try {
      authService.login(values.username, values.password).then(_user => {
        navigate(ROUTES.HOME);
      });
      toast.success('Success', {
        description: 'You have successfully logged in.',
      });
    } catch (error) {
      console.error(error);
      toast.error('Error', {
        description: 'Invalid credentials. Please try again.',
      });
    }
  }
  return (
    <div className="w-full flex flex-col justify-center items-center h-screen lg:grid lg:min-h-[200px] lg:grid-cols-2 xl:min-h-screen">
      <div className="flex items-center justify-center">
        <Form {...form}>
          <form onSubmit={form.handleSubmit(onSubmit)} className="space-y-8 w-[300px]">
            <div className="grid gap-2 text-center">
              <h1 className="text-3xl font-bold">Accounter</h1>
              <h1 className="text-3xl font-bold">Login</h1>
              <p className="text-balance text-muted-foreground">Enter your credentials to login.</p>
            </div>
            <FormField
              control={form.control}
              name="username"
              render={({ field }) => (
                <FormItem>
                  <FormLabel>Username</FormLabel>
                  <FormControl>
                    <Input placeholder="Username" {...field} />
                  </FormControl>
                  <FormMessage />
                </FormItem>
              )}
            />
            <FormField
              control={form.control}
              name="password"
              render={({ field }) => (
                <FormItem>
                  <FormLabel>Password</FormLabel>
                  <FormControl>
                    <Input placeholder="Password" type="password" {...field} />
                  </FormControl>
                  <FormMessage />
                </FormItem>
              )}
            />
            <Button
              disabled={form.formState.isSubmitting || !form.formState.isValid}
              className="w-full font-semibold"
              type="submit"
            >
              Login
            </Button>
          </form>
        </Form>
      </div>
      <div className="hidden bg-muted lg:block bg-black rounded-tl-3xl rounded-bl-3xl">
        <div className="flex flex-row justify-center items-center h-screen">
          <img
            src="../../icons/guild-logo.svg"
            alt="nature"
            className="w-[100px] h-[100px] object-cover"
          />
        </div>
      </div>
    </div>
  );
}