'use client';

import type { Preloaded } from 'convex/react';
import { useMemo, useState } from 'react';
import { zodResolver } from '@hookform/resolvers/zod';
import { useMutation, usePreloadedQuery } from 'convex/react';
import { useForm } from 'react-hook-form';
import { toast } from 'sonner';
import { z } from 'zod';

import { api } from '@gib/backend/convex/_generated/api.js';
import {
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
  Form,
  FormControl,
  FormDescription,
  FormField,
  FormItem,
  FormLabel,
  FormMessage,
  Input,
  SubmitButton,
} from '@gib/ui';

const formSchema = z.object({
  name: z
    .string()
    .trim()
    .min(5, {
      message: 'Full name is required & must be at least 5 characters.',
    })
    .max(50, {
      message: 'Full name must be less than 50 characters.',
    }),
  email: z.email({
    message: 'Please enter a valid email address.',
  }),
});

type UserInfoFormProps = {
  preloadedUser: Preloaded<typeof api.auth.getUser>;
};

export const UserInfoForm = ({ preloadedUser }: UserInfoFormProps) => {
  const user = usePreloadedQuery(preloadedUser);
  const [loading, setLoading] = useState(false);

  const updateUser = useMutation(api.auth.updateUser);

  const initialValues = useMemo<z.infer<typeof formSchema>>(
    () => ({
      name: user?.name ?? '',
      email: user?.email ?? '',
    }),
    [user?.name, user?.email],
  );

  const form = useForm<z.infer<typeof formSchema>>({
    resolver: zodResolver(formSchema),
    values: initialValues,
  });

  const handleSubmit = async (values: z.infer<typeof formSchema>) => {
    const name = values.name.trim();
    const email = values.email.trim().toLowerCase();
    const patch: Partial<{
      name: string;
      email: string;
      lunchTime: string;
      automaticLunch: boolean;
    }> = {};
    if (name !== (user.name ?? '')) patch.name = name;
    if (email !== (user.email ?? '')) patch.email = email;
    if (Object.keys(patch).length === 0) return;
    setLoading(true);
    try {
      await updateUser(patch);
      form.reset(patch);
      toast.success('Profile updated successfully.');
    } catch (error) {
      console.error(error);
      toast.error('Error updating profile.');
    } finally {
      setLoading(false);
    }
  };

  return (
    <>
      <CardHeader>
        <CardTitle className="text-2xl">Account Information</CardTitle>
        <CardDescription>Update your account information here.</CardDescription>
      </CardHeader>
      <CardContent>
        <Form {...form}>
          <form
            onSubmit={form.handleSubmit(handleSubmit)}
            className="space-y-6"
          >
            <FormField
              control={form.control}
              name="name"
              render={({ field }) => (
                <FormItem>
                  <FormLabel>Full Name</FormLabel>
                  <FormControl>
                    <Input {...field} />
                  </FormControl>
                  <FormDescription>Your public display name.</FormDescription>
                  <FormMessage />
                </FormItem>
              )}
            />

            <FormField
              control={form.control}
              name="email"
              render={({ field }) => (
                <FormItem>
                  <FormLabel>Email</FormLabel>
                  <FormControl>
                    <Input
                      {...field}
                      disabled={
                        //user.provider !== 'password'
                        !user?.email
                      }
                    />
                  </FormControl>
                  <FormDescription>
                    Your email address associated with your account.
                  </FormDescription>
                  <FormMessage />
                </FormItem>
              )}
            />
            <div className="mt-5 flex justify-center">
              <SubmitButton
                className="w-2/3 text-[1.0rem] lg:w-1/3"
                disabled={loading}
                pendingText="Saving..."
              >
                Save Changes
              </SubmitButton>
            </div>
          </form>
        </Form>
      </CardContent>
    </>
  );
};
