import { z } from "zod/v4";
import { useZodForm } from "~/lib/zodForm";
import {
  Form,
  FormControl,
  FormField,
  FormItem,
  FormLabel,
  FormMessage,
} from "~/components/custom_ui/form";
import Input from "~/components/custom_ui/input";
import { useTranslation } from "~/providers/I18nProvider";
import { api } from "~/utils/api";
import { useRouter } from "next/router";
import toast from "react-hot-toast";
import { Button } from "~/components/ui/button";
import { LoadingSpinner } from "~/components/spinner";
import { useState } from "react";
import { Checkbox } from "~/components/ui/checkbox";
import type { ServizioServizioId } from "~/schemas/public/Servizio";
import type { Users } from "~/schemas/public/Users";
import { useStrongPassword } from "~/hooks/useStrongPassword";
import { cn } from "~/lib/utils";
import { Eye, EyeOff } from "lucide-react";

type FormPwSetupProps = {
  user: Pick<Users, "id" | "nome" | "cognome" | "email" | "telefono">;
  servizioId: ServizioServizioId;
};

export const FormPwSetup = ({ user, servizioId }: FormPwSetupProps) => {
  const router = useRouter();
  const {
    isVisible,
    getStrengthColor,
    passwordRefine,
    getStrengthTxt,
    strengthScore,
    toggleVisibility,
  } = useStrongPassword();

  const Schema = z
    .object({
      password: z.string(),
      checkbox: z.boolean().refine((val) => val === false), // Honeypot field
    })
    .superRefine(({ password }, refinementContext) => {
      passwordRefine({
        password,
        refinementContext,
        path: "password",
      });
    });

  type LoginFormValues = z.infer<typeof Schema>;

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

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

  const utils = api.useUtils();

  const { mutate, isPending } = api.auth.UpdatePasswordAndLogin.useMutation({
    onSuccess: async () => {
      await utils.auth.getSession.invalidate();

      setAlreadyRequested(true);
      toast.success(t.auth.login.success);
      await router.push(`/servizio/onboard/${servizioId}`);
    },
    onError: () => {
      toast.error(t.auth.login.fail);
    },
  });

  const [altreadyRequested, setAlreadyRequested] = useState(false);
  function onSubmit(fields: LoginFormValues) {
    mutate({
      id: user.id,
      password: fields.password,
    });
  }

  return (
    <div className="mx-auto w-full max-w-3xl space-y-8 px-4 py-8">
      <div className="my-8 space-y-5">
        <h3 className="text-3xl font-bold text-gray-800 sm:text-3xl">
          Scegli la tua password
        </h3>
        <p className="text-muted-foreground">
          Imposta una password per accedere al tuo account.
        </p>
      </div>

      <Form {...form}>
        <form
          onSubmit={form.handleSubmit(onSubmit)}
          className="space-y-8 px-0.5"
        >
          <FormField
            control={form.control}
            name="password"
            render={({ field }) => (
              <FormItem>
                <div className="flex flex-col gap-x-2">
                  <FormLabel htmlFor="password" className="text-neutral-600">
                    {t.auth.signup.password}
                  </FormLabel>

                  <FormMessage
                    className={cn(
                      "whitespace-pre-wrap",
                      getStrengthTxt(strengthScore),
                    )}
                  />
                </div>

                <FormControl>
                  <div className="relative">
                    <Input
                      {...field}
                      id="password"
                      className="pe-9"
                      autoComplete="current-password"
                      placeholder="Password"
                      type={isVisible ? "text" : "password"}
                      onChange={async (e) => {
                        field.onChange(e);
                        await form.trigger("password");
                      }}
                      aria-invalid={form.getFieldState("password").invalid}
                      aria-describedby="password-strength"
                    />
                    <button
                      className="text-muted-foreground/80 hover:text-foreground focus-visible:border-ring focus-visible:text-foreground focus-visible:ring-ring/30 absolute end-0 top-1 flex size-9 items-center justify-center rounded-e-lg transition-shadow focus-visible:border focus-visible:ring-2 focus-visible:ring-offset-2 focus-visible:outline-hidden disabled:pointer-events-none disabled:cursor-not-allowed disabled:opacity-50"
                      type="button"
                      onClick={toggleVisibility}
                      aria-label={isVisible ? "Hide password" : "Show password"}
                      aria-pressed={isVisible}
                      aria-controls="password"
                    >
                      {isVisible ? (
                        <EyeOff size={16} strokeWidth={2} aria-hidden="true" />
                      ) : (
                        <Eye size={16} strokeWidth={2} aria-hidden="true" />
                      )}
                    </button>
                    <div
                      className="bg-border mt-3 mb-4 h-1 w-full overflow-hidden rounded-full"
                      role="progressbar"
                      aria-valuenow={strengthScore}
                      aria-valuemin={0}
                      aria-valuemax={4}
                      aria-label="Password strength"
                    >
                      <div
                        className={cn(
                          "h-full transition-all duration-500 ease-out",
                          getStrengthColor(strengthScore),
                        )}
                        style={{ width: `${(strengthScore / 4) * 100}%` }}
                      />
                    </div>
                  </div>
                </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
                    id="checkbox"
                    checked={field.value}
                    onCheckedChange={field.onChange}
                  />
                </FormControl>
              </FormItem>
            )}
          />
          <Button
            disabled={isPending || altreadyRequested}
            type="submit"
            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"
          >
            {isPending ? (
              <div className="flex items-center justify-center">
                <LoadingSpinner size={25} />
              </div>
            ) : (
              <span>Salva la password e prosegui</span>
            )}
          </Button>
        </form>
      </Form>
    </div>
  );
};