import { ModalBody } from '@chakra-ui/modal';
import {
  FormControl,
  FormLabel,
  Input,
  PinInput,
  PinInputField,
} from '@chakra-ui/react';
import {
  getSettings,
  ontimePlaceholderSettings,
  postSettings,
} from 'app/api/ontimeApi';
import { useContext, useEffect, useState } from 'react';
import { useFetch } from 'app/hooks/useFetch';
import { APP_SETTINGS } from 'app/api/apiConstants';
import style from './Modals.module.scss';
import { LoggingContext } from '../../app/context/LoggingContext';
import { IconButton } from '@chakra-ui/button';
import { FiEye } from 'react-icons/fi';
import SubmitContainer from './SubmitContainer';
import { inputProps } from './modalHelper';

export default function AppSettingsModal() {
  const { data, status, refetch } = useFetch(APP_SETTINGS, getSettings);
  const { emitError, emitWarning } = useContext(LoggingContext);
  const [formData, setFormData] = useState(ontimePlaceholderSettings);
  const [changed, setChanged] = useState(false);
  const [submitting, setSubmitting] = useState(false);
  const [hidePin, setHidePin] = useState(true);

  /**
   * Set formdata from server state
   */
  useEffect(() => {
    if (data == null) return;
    if (changed) return;
    setFormData({
      pinCode: data.pinCode,
    });
  }, [changed, data]);

  /**
   * Validate and submit data
   */
  const submitHandler = async (event) => {
    event.preventDefault();
    setSubmitting(true);

    const f = formData;
    let e = { status: false, message: '' };

    // Validate fields
    if (f.pinCode === '' || f.pinCode == null) {
      e.status = true;
      e.message += 'App pin code removed';
    } else {
      e.status = true;
      e.message += 'App pin code added';
    }

    // set fields with error
    if (!e.status) {
      emitError(`Invalid Input: ${e.message}`);
    } else {
      await postSettings(formData);
      await refetch();
      emitWarning(e.message);
      setChanged(false);
    }

    setSubmitting(false);
  };

  /**
   * Reverts local state equals to server state
   */
  const revert = async () => {
    setChanged(false);
    await refetch();
  };

  /**
   * Handles change of input field in local state
   * @param {string} field - object parameter to update
   * @param {string} value - new object parameter value
   */
  const handleChange = (field, value) => {
    const temp = { ...formData };
    temp[field] = value;
    setFormData(temp);
    setChanged(true);
  };

  const disableModal = status !== 'success';

  return (
    <ModalBody className={style.modalBody}>
      <p className={style.notes}>
        Options related to the application
        <br />
        🔥 Changes take effect after app restart 🔥
      </p>
      <form onSubmit={submitHandler}>
        <div className={style.modalFields}>
          <div className={style.hSeparator}>General App Settings</div>
          <div className={style.modalInline}>
            <FormControl id='serverPort'>
              <FormLabel htmlFor='serverPort'>
                Viewer Port
                <span className={style.labelNote}>
                  <br />
                  Ontime is available at port
                </span>
              </FormLabel>
              <Input
                {...inputProps}
                name='title'
                value={4001}
                disabled
                style={{ width: '6em', textAlign: 'center' }}
              />
            </FormControl>
            <FormControl id='editorPin'>
              <FormLabel htmlFor='editorPin'>
                Editor Pincode
                <span className={style.labelNote}>
                  <br />
                  Protect the editor with a Pincode
                </span>
              </FormLabel>
              <div className={style.pin}>
                <PinInput
                  {...inputProps}
                  type='alphanumeric'
                  defaultValue=''
                  value={formData.pinCode}
                  mask={hidePin}
                  isDisabled={disableModal}
                  onChange={(value) => handleChange('pinCode', value)}
                >
                  <PinInputField />
                  <PinInputField />
                  <PinInputField />
                  <PinInputField />
                </PinInput>
                <IconButton
                  size='sm'
                  colorScheme='blue'
                  variant='ghost'
                  icon={<FiEye />}
                  aria-label='Editor pin code'
                  onMouseDown={() => setHidePin(false)}
                  onMouseUp={() => setHidePin(true)}
                  isDisabled={disableModal}
                />
              </div>
            </FormControl>
          </div>
        </div>
        <SubmitContainer
          revert={revert}
          submitting={submitting}
          changed={changed}
          status={status}
        />
      </form>
    </ModalBody>
  );
}