import {
  FormEvent,
  useCallback,
  useEffect,
  useMemo,
  useRef,
  useState,
} from 'react';
import ReactInputMask from 'react-input-mask';
import { ArrowRightIcon } from '../icons/ArrowRightIcon';
import { CloseIcon } from '../icons/CloseIcon';
import { LoaderIcon } from '../icons/LoaderIcon';
import { api } from '../../api/contactsFormInstance';
import { Button } from '../../ui/Button';
import { useModalStore } from '../../store/modalStore';
import { SelectPhoneCode } from './SelectPhoneCode';
import { Country } from 'react-phone-number-input';
import { getExampleNumber } from 'libphonenumber-js';
import examples from 'libphonenumber-js/mobile/examples';
import { ClassNameWrapper } from '../../hocs/ClassNameWrapper';
import { NavLink } from 'react-router-dom';

export function ModalWithForm() {
  const { setModal } = useModalStore();
  const [name, setName] = useState('');
  const [[phoneCode, country], setPhoneCodeAndCountry] = useState<
    [string, Country]
  >(['+7', 'RU']);
  const [phone, setPhone] = useState('');
  const [email, setEmail] = useState('');
  const [description, setDescription] = useState('');
  const [isLoading, setIsLoading] = useState(false);
  const [isSend, setIsSend] = useState(false);

  const placeholder = useMemo(
    () =>
      getExampleNumber(country, examples)
        ?.formatInternational()
        .split(' ')
        .slice(1)
        .join(' '),
    [country],
  );

  const textAreaRef = useRef<HTMLTextAreaElement>(null);

  useEffect(() => {
    if (textAreaRef.current) {
      textAreaRef.current.style.height = 'auto';
      textAreaRef.current.style.height =
        textAreaRef.current.scrollHeight + 'px';
    }
  }, [textAreaRef, description]);

  function handleSubmit(e: FormEvent<HTMLFormElement>) {
    e.preventDefault();

    sendMail();
  }

  async function sendMail() {
    setIsLoading(true);

    try {
      await api
        .post('mail', {
          json: {
            fullname: name,
            phone: phoneCode + phone,
            email,
            request: description,
          },
        })
        .json();

      setIsSend(true);
      setIsLoading(false);
    } catch (error) {
      setIsLoading(false);
      if (error instanceof Error) {
        alert(error.message);
      }
    }
  }

  const listener = useCallback(
    (e: KeyboardEvent) => {
      if (e.key === 'Escape') {
        setModal(false);
      }
    },
    [setModal],
  );

  useEffect(() => {
    document.addEventListener('keydown', listener);
    return () => document.removeEventListener('keydown', listener);
  }, [listener, setModal]);

  return (
    <div className="fixed flex flex-col gap-4 top-0 right-0 h-full sm:w-[408px] w-full bg-[#14161F] overflow-y-auto sm:p-8 p-6">
      {!isSend ? (
        <div className="space-y-8">
          <div className="flex items-center justify-between">
            <p className="font-medium accent">Оставьте заявку</p>
            <button
              onClick={() => setModal(null)}
              className="p-2 transition-colors rounded-full lg:hover:bg-white lg:hover:bg-opacity-10"
            >
              <CloseIcon />
            </button>
          </div>
          <form onSubmit={handleSubmit}>
            <div className="space-y-6">
              <hr className="border-[#3D425C]" />

              <div>
                <label
                  className="m-text text-[#9299BD] select-none"
                  htmlFor="name"
                >
                  Имя
                </label>
                <input
                  required
                  id="name"
                  type="text"
                  value={name}
                  onChange={e => setName(e.target.value)}
                  placeholder="Ваше имя"
                  className="bg-transparent border-b border-[#3D425C] focus:border-white py-4 rounded-none outline-none transition-all w-full placeholder:h4 placeholder:font-medium placeholder:select-none"
                />
              </div>

              <div>
                <label
                  className="m-text text-[#9299BD] select-none"
                  htmlFor="tel"
                >
                  Телефон
                </label>
                <div className="flex gap-x-3 py-2 border-[#3D425C] relative">
                  <SelectPhoneCode
                    currentPhoneCodeAndCountry={[phoneCode, country]}
                    onClick={setPhoneCodeAndCountry}
                  />
                  <div className="border-l border-[#3D425C]" />
                  <ReactInputMask
                    required
                    type="tel"
                    id={'tel'}
                    mask={placeholder?.replace(/\d/g, '9') ?? ''}
                    maskChar={null}
                    value={phone}
                    placeholder={placeholder}
                    onChange={e => setPhone(e.target.value.replace(/ /g, ''))}
                    className="w-full transition-all bg-transparent rounded-none outline-none h4 placeholder:h4 placeholder:font-medium placeholder:select-none peer"
                  />
                  <div className="bottom-0 absolute w-full border-b border-[#3D425C] peer-focus:border-white -mb-2" />
                </div>
              </div>

              <div>
                <label
                  className="m-text text-[#9299BD] select-none"
                  htmlFor="email"
                >
                  Email*
                </label>
                <input
                  required
                  id="email"
                  type="text"
                  value={email}
                  onChange={e => setEmail(e.target.value)}
                  placeholder="Ваш email"
                  className="bg-transparent border-b border-[#3D425C] focus:border-white py-4 rounded-none outline-none transition-all w-full placeholder:h4 placeholder:font-medium placeholder:select-none"
                />
              </div>

              <div>
                <label
                  className="m-text text-[#9299BD] select-none"
                  htmlFor="description"
                >
                  Задача
                </label>
                <textarea
                  ref={textAreaRef}
                  id="description"
                  placeholder="Опишите вашу задачу"
                  value={description}
                  rows={1}
                  onChange={e => setDescription(e.target.value)}
                  className="bg-transparent border-b py-4 focus:border-white max-h-[300px] h-auto rounded-none border-[#3D425C] resize-none outline-none transition-all w-full placeholder:h4 placeholder:font-medium placeholder:select-none placeholder-shown:overflow-hidden"
                />
              </div>
            </div>

            <Button
              width="full"
              disabled={isLoading}
              className="px-6 py-3 mt-12"
              onClick={() => `ym(98587267, 'reachGoal', 'submit_form');`}
              icon={
                isLoading ? (
                  <LoaderIcon className="relative w-6 h-6 animate-spin" />
                ) : (
                  <div className="p-2 bg-white rounded-full">
                    <ClassNameWrapper
                      element={<ArrowRightIcon />}
                      className="text-black"
                    />
                  </div>
                )
              }
            >
              Отправить
            </Button>
            <p className="m-caption mt-6 text-center text-[#52587A]">
              Нажимая кнопку отправить, вы даете
              <span className="text-gradient">
                {' '}
                <NavLink to="/privacy-policy" target="_blank">
                  согласие на обработку персональных данных
                </NavLink>
              </span>
              &nbsp;и принимаете условия&nbsp;
              <span className="text-gradient">
                <NavLink to="/policy" target="_blank">
                  политики
                </NavLink>
              </span>
            </p>
          </form>
        </div>
      ) : (
        <div className="">
          <div className="space-y-8">
            <h2 className="font-medium h2">Спасибо за отправку заявки!</h2>
            <p className="m-text">
              Мы ценим ваш интерес к нашей компании и в ближайшее время свяжемся
              с вами для уточнения деталей проекта.
            </p>
          </div>
          <Button
            width="full"
            className="py-5 px-6 absolute top-[50vh]"
            icon={<ArrowRightIcon className="w-6 h-6" />}
            onClick={() => setModal(false)}
          >
            На главную
          </Button>
        </div>
      )}
    </div>
  );
}