"use client";

import {
  Box,
  Flex,
  Input,
  Link as ChakraLink,
  Text,
  ClientOnly,
} from "@chakra-ui/react";
import signUpImage from "../../../../../public/assets/img/sign-up-image.png";
import { Button } from "@/components/ui/buttons/button";
import { Field } from "@/components/ui/forms/field";
import { useTranslations } from "next-intl";
import { useForm } from "react-hook-form";
import * as yup from "yup";
import { yupResolver } from "@hookform/resolvers/yup";
import { InputGroup } from "@/components/ui/forms/input-group";
import { BiLock, BiUser } from "react-icons/bi";
import { Link } from "@/i18n/navigation";
import { MdMail } from "react-icons/md";
import { useRouter } from "next/navigation";
import { PasswordInput } from "@/components/ui/forms/password-input";
import { Skeleton } from "@/components/ui/feedback/skeleton";
import { authService } from "@/lib/api/auth/service";
import { useState } from "react";
import { signIn } from "next-auth/react";
import { toaster } from "@/components/ui/feedback/toaster";

const schema = yup.object({
  name: yup.string().required(),
  email: yup.string().email().required(),
  password: yup.string().min(8).required(),
});

type SignUpForm = yup.InferType<typeof schema>;

export default function SignUpForm() {
  const t = useTranslations();
  const router = useRouter();
  const [isSubmitting, setIsSubmitting] = useState(false);

  const {
    handleSubmit,
    register,
    formState: { errors },
  } = useForm<SignUpForm>({ resolver: yupResolver(schema), mode: "onChange" });

  const onSubmit = async (formData: SignUpForm) => {
    setIsSubmitting(true);
    try {
      await authService.register({
        email: formData.email,
        password: formData.password,
        firstName: formData.name,
        lastName: "",
      });

      const res = await signIn("credentials", {
        redirect: false,
        email: formData.email,
        password: formData.password,
      });

      if (res?.error) {
        throw new Error(res.error);
      }

      router.replace("/home");
    } catch (error) {
      if (error instanceof Error && error.message) {
        toaster.error({
          title: error.message,
          type: "error",
        });
      }
      // other errors are handled by api-service interceptor (toast + 422 display)
    } finally {
      setIsSubmitting(false);
    }
    return formData;
  };

  return (
    <Box>
      <Box
        position="absolute"
        minH={{ base: "70vh", md: "50vh" }}
        w={{ md: "calc(100vw - 50px)" }}
        borderRadius={{ md: "15px" }}
        left="0"
        right="0"
        bgRepeat="no-repeat"
        overflow="hidden"
        zIndex="-1"
        top="0"
        bgImage={`url(${signUpImage.src})`}
        bgSize="cover"
        mx={{ md: "auto" }}
        mt={{ md: "14px" }}
      />
      <Flex
        w="full"
        h="full"
        direction="column"
        alignItems="center"
        justifyContent="center"
      >
        <Text
          fontSize={{ base: "2xl", md: "3xl", lg: "4xl" }}
          color="white"
          fontWeight="bold"
          mt={{ base: "2rem", md: "4.5rem", "2xl": "6.5rem" }}
          mb={{ base: "2rem", md: "3rem", "2xl": "4rem" }}
        >
          {t("auth.create-an-account-now")}
        </Text>
        <Flex
          direction="column"
          w={{ base: "100%", md: "445px" }}
          background="transparent"
          borderRadius="15px"
          p="10"
          mx={{ base: "100px" }}
          bg="bg.panel"
          boxShadow="0 20px 27px 0 rgb(0 0 0 / 5%)"
          mb="8"
        >
          <Flex
            as="form"
            onSubmit={handleSubmit(onSubmit)}
            flexDirection="column"
            alignItems="center"
            justifyContent="start"
            w="100%"
          >
            <Field
              mb="24px"
              label={t("name")}
              errorText={errors.name?.message}
              invalid={!!errors.name}
            >
              <InputGroup w="full" startElement={<BiUser size="1rem" />}>
                <Input
                  borderRadius="15px"
                  fontSize="sm"
                  type="text"
                  placeholder={t("name")}
                  size="lg"
                  {...register("name")}
                />
              </InputGroup>
            </Field>
            <Field
              mb="24px"
              label={t("email")}
              errorText={errors.email?.message}
              invalid={!!errors.email}
            >
              <InputGroup w="full" startElement={<MdMail size="1rem" />}>
                <Input
                  borderRadius="15px"
                  fontSize="sm"
                  type="text"
                  placeholder={t("email")}
                  size="lg"
                  {...register("email")}
                />
              </InputGroup>
            </Field>
            <Field
              mb="24px"
              label={t("password")}
              errorText={errors.password?.message}
              invalid={!!errors.password}
            >
              <InputGroup w="full" startElement={<BiLock size="1rem" />}>
                <PasswordInput
                  borderRadius="15px"
                  fontSize="sm"
                  placeholder={t("password")}
                  size="lg"
                  {...register("password")}
                />
              </InputGroup>
            </Field>
            <Field mb="24px">
              <ClientOnly fallback={<Skeleton height="45px" width="100%" />}>
                <Button
                  type="submit"
                  bg="primary.400"
                  color="white"
                  fontWeight="bold"
                  w="100%"
                  h="45px"
                  _hover={{
                    bg: "primary.500",
                  }}
                  _active={{
                    bg: "primary.400",
                  }}
                  loading={isSubmitting}
                >
                  {isSubmitting ? t("auth.registering") : t("auth.sign-up")}
                </Button>
              </ClientOnly>
            </Field>
          </Flex>
          <Flex
            flexDirection="column"
            justifyContent="center"
            alignItems="center"
            maxW="100%"
          >
            <Text
              color={{ base: "gray.400", _dark: "white" }}
              fontWeight="medium"
            >
              {t("auth.already-have-an-account")}
              <ChakraLink
                as={Link}
                color={{ base: "primary.400", _dark: "primary.200" }}
                ml="2"
                href="/signin"
                fontWeight="bold"
                focusRing="none"
              >
                {t("auth.sign-in")}
              </ChakraLink>
            </Text>
          </Flex>
        </Flex>
      </Flex>
    </Box>
  );
}