import Link from "next/link";
import { useRouter } from "next/router";
import { useState } from "react";
import toast from "react-hot-toast";
import { z } from "zod/v4";
import {
	Form,
	FormControl,
	FormField,
	FormItem,
	FormLabel,
	FormMessage,
} from "~/components/custom_ui/form";
import Input from "~/components/custom_ui/input";
import { LoadingSpinner } from "~/components/spinner";
import { Button } from "~/components/ui/button";
import { Checkbox } from "~/components/ui/checkbox";
import { env } from "~/env";
import { useZodForm } from "~/lib/zodForm";
import { useTranslation } from "~/providers/I18nProvider";
import { api } from "~/utils/api";

export const FormLogin = () => {
	const router = useRouter();
	const { redirect } = router.query;
	const LoginSchema = z.object({
		checkbox: z.boolean().refine((val) => val === false), // Honeypot field
		email: z.email(),
		password: z.string(),
	});

	type LoginFormValues = z.infer<typeof LoginSchema>;

	const defaultValues: LoginFormValues = {
		checkbox: false, // Honeypot field
		email: "",
		password: "",
	};
	const { locale, t } = useTranslation();
	z.config(z.locales[locale]());

	const form = useZodForm(LoginSchema, {
		defaultValues: defaultValues,
	});

	const utils = api.useUtils();

	const { mutate, isPending } = api.auth.loginUser.useMutation({
		onError: ({ message }) => {
			toast.error(`${t.auth.login.fail}\n${message}`);
		},
		onSuccess: async () => {
			await utils.auth.getSession.invalidate();
			setAlreadyRequested(true);
			toast.success(t.auth.login.success);
			await router.push(redirect ? (redirect as string) : "/");
			//window.location.replace(redirect ? (redirect as string) : "/");
		},
	});
	const [altreadyRequested, setAlreadyRequested] = useState(false);
	function onSubmit(fields: LoginFormValues) {
		mutate({
			email: fields.email,
			password: fields.password,
		});
		form.reset();
	}

	return (
		<>
			<div className="text-center">
				<div className="my-8 space-y-5">
					<h3 className="font-bold text-3xl sm:text-3xl">
						{t.auth.login.titolo}
					</h3>
					<h3 className="text-xl">{t.auth.login.sottotitolo}</h3>
				</div>

				{env.NEXT_PUBLIC_BASE_URL.includes("localhost") && (
					<button
						className="bg-yellow-300 font-semibold"
						onClick={async () => {
							form.setValue("email", "m.pedone98@gmail.com");
							form.setValue("password", "Marco1..");
							await form.handleSubmit(onSubmit)();
						}}
						type="button"
					>
						TEMP DEV LOGIN
					</button>
				)}

				<Form {...form}>
					<form
						autoComplete="on"
						className="space-y-8 px-0.5"
						onSubmit={form.handleSubmit(onSubmit)}
					>
						<FormField
							control={form.control}
							name="email"
							render={({ field }) => (
								<FormItem>
									<div className="flex flex-wrap items-center gap-x-2">
										<FormLabel htmlFor="email">{t.auth.login.email}</FormLabel>{" "}
										<FormMessage />
									</div>

									<FormControl>
										<Input
											placeholder="esempio@email.com"
											{...field}
											autoComplete="username"
											id="email"
											required
											type="email"
										/>
									</FormControl>
								</FormItem>
							)}
						/>
						<FormField
							control={form.control}
							name="password"
							render={({ field }) => (
								<FormItem>
									<div className="flex flex-wrap items-center gap-x-2">
										<FormLabel
											className="flex flex-1 justify-between"
											htmlFor="password"
										>
											<div>{t.auth.login.password}</div>
											<Link
												className="text-primary"
												href="/auth/new-password-reset"
											>
												{t.auth.login.password_forgotten}
											</Link>
										</FormLabel>
										<FormMessage />
									</div>

									<FormControl>
										<Input
											{...field}
											autoComplete="current-password"
											id="password"
											required
											type="password"
										/>
									</FormControl>
								</FormItem>
							)}
						/>
						<FormField
							control={form.control}
							name="checkbox"
							render={({ field }) => (
								<FormItem className="hidden">
									<div className="flex flex-wrap items-center gap-x-2">
										<FormLabel htmlFor="checkbox">Check Me</FormLabel>
										<FormMessage />
									</div>

									<FormControl>
										<Checkbox
											checked={field.value}
											id="checkbox"
											onCheckedChange={field.onChange}
										/>
									</FormControl>
								</FormItem>
							)}
						/>
						<Button
							className="w-full rounded-lg bg-indigo-600 px-4 py-2 font-medium text-white duration-150 hover:bg-indigo-500 active:bg-indigo-600"
							disabled={isPending || altreadyRequested}
							type="submit"
						>
							{isPending ? (
								<div className="flex items-center justify-center">
									<LoadingSpinner size={25} />
								</div>
							) : (
								t.auth.login.titolo
							)}
						</Button>
					</form>
				</Form>

				<br />
				<div className="px-2 pt-2 text-left text-sm">
					<span>{t.auth.login.psa_1}</span>
					<Link
						className="text-indigo-600 underline hover:text-indigo-500"
						href="/termini-condizioni"
					>
						{t.auth.login.psa_terms}
					</Link>
					<span>{t.auth.login.psa_2}</span>
					<Link
						className="text-indigo-600 underline hover:text-indigo-500"
						href="/privacy-policy"
					>
						{t.auth.login.psa_privacy}
					</Link>
					.
				</div>
			</div>
		</>
	);
};