import { CheckIcon } from "@heroicons/react/solid";
import { zodResolver } from "@hookform/resolvers/zod";
import { useRouter } from "next/router";
import { useRef, useState } from "react";
import { Controller, FormProvider, useForm } from "react-hook-form";
import * as z from "zod";

import { isPasswordValid } from "@calcom/lib/auth";
import { useLocale } from "@calcom/lib/hooks/useLocale";
import prisma from "@calcom/prisma";
import { inferSSRProps } from "@calcom/types/inferSSRProps";
import WizardForm from "@calcom/ui/v2/WizardForm";
import { TextField, PasswordField, EmailField } from "@calcom/ui/v2/form/fields";

const StepDone = () => {
  const { t } = useLocale();

  return (
    <div className="min-h-36 my-6 flex flex-col items-center justify-center">
      <div className="flex h-[72px] w-[72px] items-center justify-center rounded-full bg-gray-600 dark:bg-white">
        <CheckIcon className="inline-block h-10 w-10 text-white dark:bg-white dark:text-gray-600" />
      </div>
      <div className="max-w-[420px] text-center">
        <h2 className="mt-6 mb-1 text-lg font-medium dark:text-gray-300">{t("all_done")}</h2>
      </div>
    </div>
  );
};

const SetupFormStep1 = (props: { setIsLoading: (val: boolean) => void }) => {
  const router = useRouter();
  const { t } = useLocale();

  const formSchema = z.object({
    username: z.string().min(1, t("at_least_characters", { count: 1 })),
    email_address: z.string().email({ message: t("enter_valid_email") }),
    full_name: z.string().min(3, t("at_least_characters", { count: 3 })),
    password: z.string().refine((val) => isPasswordValid(val.trim()), {
      message: t("invalid_password_hint"),
    }),
  });

  const formMethods = useForm<{
    username: string;
    email_address: string;
    full_name: string;
    password: string;
  }>({
    resolver: zodResolver(formSchema),
  });

  const formRef = useRef(null);

  const onError = () => {
    props.setIsLoading(false);
  };

  const onSubmit = formMethods.handleSubmit(async (data: z.infer<typeof formSchema>) => {
    props.setIsLoading(true);
    const response = await fetch("/api/auth/setup", {
      method: "POST",
      body: JSON.stringify({
        username: data.username,
        full_name: data.full_name,
        email_address: data.email_address.toLowerCase(),
        password: data.password,
      }),
      headers: {
        "Content-Type": "application/json",
      },
    });
    if (response.status === 200) {
      router.replace(`/auth/login?email=${data.email_address.toLowerCase()}`);
    } else {
      router.replace("/auth/setup");
    }
  }, onError);

  return (
    <FormProvider {...formMethods}>
      <form id="setup-step-1" name="setup-step-1" className="space-y-4" onSubmit={onSubmit} ref={formRef}>
        <div>
          <Controller
            name="username"
            control={formMethods.control}
            render={({ field: { onBlur, onChange, value } }) => (
              <TextField
                addOnLeading={
                  <span className="items-centerpx-3 inline-flex rounded-none text-sm text-gray-500">
                    {process.env.NEXT_PUBLIC_WEBSITE_URL}/
                  </span>
                }
                value={value || ""}
                className="my-0"
                onBlur={onBlur}
                name="username"
                onChange={async (e) => {
                  onChange(e.target.value);
                  formMethods.setValue("username", e.target.value);
                  await formMethods.trigger("username");
                }}
              />
            )}
          />
        </div>
        <div>
          <Controller
            name="full_name"
            control={formMethods.control}
            render={({ field: { onBlur, onChange, value } }) => (
              <TextField
                value={value || ""}
                onBlur={onBlur}
                onChange={async (e) => {
                  onChange(e.target.value);
                  formMethods.setValue("full_name", e.target.value);
                  await formMethods.trigger("full_name");
                }}
                color={formMethods.formState.errors.full_name ? "warn" : ""}
                type="text"
                name="full_name"
                autoCapitalize="none"
                autoComplete="name"
                autoCorrect="off"
                className="my-0"
              />
            )}
          />
        </div>
        <div>
          <Controller
            name="email_address"
            control={formMethods.control}
            render={({ field: { onBlur, onChange, value } }) => (
              <EmailField
                value={value || ""}
                onBlur={onBlur}
                onChange={async (e) => {
                  onChange(e.target.value);
                  formMethods.setValue("email_address", e.target.value);
                  await formMethods.trigger("email_address");
                }}
                defaultValue={router.query.email_address}
                className="my-0"
                name="email_address"
              />
            )}
          />
        </div>
        <div>
          <Controller
            name="password"
            control={formMethods.control}
            render={({ field: { onBlur, onChange, value } }) => (
              <PasswordField
                value={value || ""}
                onBlur={onBlur}
                onChange={async (e) => {
                  onChange(e.target.value);
                  formMethods.setValue("password", e.target.value);
                  await formMethods.trigger("password");
                }}
                name="password"
                className="my-0"
                autoComplete="off"
              />
            )}
          />
        </div>
      </form>
    </FormProvider>
  );
};

export default function Setup(props: inferSSRProps<typeof getServerSideProps>) {
  const { t } = useLocale();
  const [isLoadingStep1, setIsLoadingStep1] = useState(false);

  const steps = [
    {
      title: t("administrator_user"),
      description: t("lets_create_first_administrator_user"),
      content: props.userCount !== 0 ? <StepDone /> : <SetupFormStep1 setIsLoading={setIsLoadingStep1} />,
      enabled: props.userCount === 0, // to check if the wizard should show buttons to navigate through more steps
      isLoading: isLoadingStep1,
    },
  ];

  return (
    <>
      <main className="flex h-screen items-center bg-gray-100 print:h-full">
        <WizardForm href="/auth/setup" steps={steps} containerClassname="max-w-sm" />
      </main>
    </>
  );
}

export const getServerSideProps = async () => {
  const userCount = await prisma.user.count();
  return {
    props: {
      userCount,
    },
  };
};