import React, { useState } from 'react';
import { useForm, Controller } from 'react-hook-form';
import { z } from 'zod';
import { zodResolver } from '@hookform/resolvers/zod';

const accountFormSchema = z.object({
  name: z
    .string()
    .min(2, {
      message: "Name must be at least 2 characters.",
    })
    .max(30, {
      message: "Name must not be longer than 30 characters.",
    }),
  dob: z.date({
    required_error: "A date of birth is required.",
  }),
  language: z.string({
    required_error: "Please select a language.",
  }),
});

type AccountFormValues = z.infer<typeof accountFormSchema>;

const defaultValues: Partial<AccountFormValues> = {
  name: "Your name",
  dob: new Date("2000-01-01"),
  language: "en",
};

const languages = [
  { label: "English", value: "en" },
  { label: "French", value: "fr" },
  { label: "German", value: "de" },
  { label: "Spanish", value: "es" },
  { label: "Portuguese", value: "pt" },
  { label: "Russian", value: "ru" },
  { label: "Japanese", value: "ja" },
  { label: "Korean", value: "ko" },
  { label: "Chinese", value: "zh" },
];

export function AccountForm() {
  const [showDatePicker, setShowDatePicker] = useState(false);
  const { control, handleSubmit } = useForm<AccountFormValues>({
    resolver: zodResolver(accountFormSchema),
    defaultValues,
  });

  const onSubmit = (data: AccountFormValues) => {
    console.log(JSON.stringify(data, null, 2));
  };

  return (
    <div className="space-y-4">
      <Controller
        control={control}
        name="name"
        render={({ field: { onChange, value } }) => (
          <div className="mb-4">
            <label className="block text-sm font-medium mb-1">Name</label>
            <input
              className="w-full p-2 border rounded"
              onChange={(e) => onChange(e.target.value)}
              value={value}
              placeholder="Your name"
            />
            <p className="text-sm text-gray-500 mt-1">
              This is the name that will be displayed on your profile and in emails.
            </p>
          </div>
        )}
      />

      <Controller
        control={control}
        name="dob"
        render={({ field: { onChange, value } }) => (
          <div className="mb-4">
            <label className="block text-sm font-medium mb-1">Date of birth</label>
            <button
              type="button"
              className="w-full p-2 border rounded text-left"
              onClick={() => setShowDatePicker(true)}
            >
              {value.toDateString()}
            </button>
            {showDatePicker && (
              <input
                type="date"
                value={value.toISOString().split('T')[0]}
                onChange={(e) => {
                  setShowDatePicker(false);
                  if (e.target.value) {
                    onChange(new Date(e.target.value));
                  }
                }}
                className="mt-1 p-1 border rounded"
              />
            )}
            <p className="text-sm text-gray-500 mt-1">
              Your date of birth is used to calculate your age.
            </p>
          </div>
        )}
      />

      <Controller
        control={control}
        name="language"
        render={({ field: { onChange, value } }) => (
          <div className="mb-4">
            <label className="block text-sm font-medium mb-1">Language</label>
            <select
              className="w-full p-2 border rounded"
              value={value}
              onChange={(e) => onChange(e.target.value)}
            >
              {languages.map((language) => (
                <option key={language.value} value={language.value}>
                  {language.label}
                </option>
              ))}
            </select>
            <p className="text-sm text-gray-500 mt-1">
              This is the language that will be used in the dashboard.
            </p>
          </div>
        )}
      />

      <button
        className="bg-blue-500 text-white px-4 py-2 rounded hover:bg-blue-600"
        onClick={handleSubmit(onSubmit)}
      >
        Update account
      </button>
    </div>
  );
}
