import { createLazyFileRoute, useNavigate } from "@tanstack/react-router";
import { useMutation } from "@tanstack/react-query";
import { Input } from '@/shadcn/components/ui/input.tsx';
import { Button } from '@/shadcn/components/ui/button.tsx';
import { Alert } from '@/shadcn/components/ui/alert.tsx';
import { Card } from '@/shadcn/components/ui/card.tsx';
import { 
	Form, 
	FormControl, 
	FormField, 
	FormItem, 
	FormLabel, 
	FormMessage 
} from '@/shadcn/components/ui/form.tsx';
import client from "../../honoClient";
import { useForm } from "react-hook-form";
import { z } from "zod";
import { zodResolver } from "@hookform/resolvers/zod";
import { useEffect, useState } from "react";
import useAuth from "@/hooks/useAuth";
import { TbArrowNarrowRight } from "react-icons/tb";

export const Route = createLazyFileRoute("/login/")({
	component: LoginPage,
});

type FormSchema = {
	username: string;
	password: string;
};

const formSchema = z.object({
	username: z.string().min(1, "This field is required"),
	password: z.string().min(1, "This field is required"),
});

export default function LoginPage() {
	const [errorMessage, setErrorMessage] = useState("");
	const navigate = useNavigate();

	const { isAuthenticated, saveAuthData } = useAuth();

	const form = useForm<FormSchema>({
		resolver: zodResolver(formSchema),
		defaultValues: {
			username: "",
			password: "",
		},
	});

	useEffect(() => {
		if (isAuthenticated) {
			navigate({
				to: "/dashboard",
				replace: true,
			});
		}
	}, [navigate, isAuthenticated]);

	const loginMutation = useMutation({
		mutationFn: async (values: FormSchema) => {
			const res = await client.auth.login.$post({
				form: values,
			});

			if (res.ok) {
				return await res.json();
			}

			throw res;
		},

		onSuccess: (data) => {
			saveAuthData(
				{
					id: data.user.id,
					name: data.user.name,
					permissions: data.user.permissions,
				},
				data.accessToken
			);
		},

		onError: async (error) => {
			console.log("error!");
			if (error instanceof Response) {
				const body = await error.json();
				setErrorMessage(body.message as string);
				return;
			}
			console.log("bukan error");
		},
	});

	const handleSubmit = (values: FormSchema) => {
		loginMutation.mutate(values);
	};

	return (
		<div
            className="flex items-center justify-center bg-contain bg-top lg:bg-right 
				bg-no-repeat bg-[url('../src/assets/backgrounds/backgroundLoginMobile.png')] 
                lg:bg-[url('../src/assets/backgrounds/backgroundLogin.png')]"
        >
			<div className="absolute top-[1.688rem] left-[1.875rem] text-base font-bold leading-[1.21rem]">
				Amati
			</div>
			<div className="w-screen h-screen flex ml-0 lg:ml-[7.063rem] justify-center lg:justify-start items-center"> 
				<Card className="w-[19.125rem] sm:w-[26.063rem] lg:w-[29.5rem] h-auto bg-transparent border-none">
					<h1 className="mb-2 text-[2.625rem] font-bold leading-[3.177rem] tracking-tightest">Sign In</h1>
					<p className="text-sm mb-10 leading-[1.059rem]">
						New to this app?{' '}
						<a
							href="/register"
							className="text-blue-500 font-bold hover:text-blue-800"
						>
							Register now
						</a>
					</p>
					<Form {...form}>
						<form onSubmit={form.handleSubmit(handleSubmit)}>
							<div className="space-y-5">
								{errorMessage && (
									<Alert variant="destructive">
										<p>{errorMessage}</p>
									</Alert>
								)}
								<FormField
									name="username"
									render={({ field }) => (
										<FormItem className="text-sm">
											<FormLabel className="font-semibold leading-[1.059rem]">Email/Username</FormLabel>
											<FormControl>
												<Input
													placeholder="eg; user@mail.com"
													disabled={loginMutation.isPending}
													className={form.formState.errors.username ? "border-red-500" : ""}
													{...field}
												/>
											</FormControl>
											<FormMessage />
										</FormItem>
									)}
								/>
								<FormField
									name="password"
									render={({ field }) => (
										<FormItem className="text-sm">
											<FormLabel className="font-semibold leading-[1.059rem]">Password</FormLabel>
											<FormControl>
												<Input
													type="password"
													placeholder="*****"
													disabled={loginMutation.isPending}
													className={form.formState.errors.password ? "border-red-500" : ""}
													{...field}
												/>
											</FormControl>
											<FormMessage />
										</FormItem>
									)}
								/>
								<p className="text-sm">
									<a
										href="/forgot-password"
										className="text-blue-500 font-bold hover:text-blue-800 leading-[1.059rem]"
									>
										Forgot Password?
									</a>
								</p>
							</div>
							<div className="flex justify-between mt-10">
								<Button
									type="submit"
									disabled={loginMutation.isPending}
									variant="default"
									className="w-full flex items-center justify-center space-x-[13.125rem] sm:space-x-[20rem] 
										lg:space-x-[23.125rem] bg-[#2555FF] text-white hover:bg-[#1e4ae0]"
								>
									<span className="leading-[1.25rem]">Sign In</span>
									<TbArrowNarrowRight className="h-5 w-5" />
								</Button>
							</div>
						</form>
					</Form>
				</Card>
			</div>
		</div>
	);
}