open-law/src/multipleInput.ts

const handleClickOnTag = (
  element: Element,
  addedWords: string[],
  tagsToSubmitInput: HTMLInputElement,
) => {
  const tag = element.innerHTML;

  addedWords = addedWords.filter(el => el != tag);

  element.remove();
  const multipleInput: any = document.querySelector('.multiple-input');
  multipleInput.value = tag;

  // prettier-ignore
  tagsToSubmitInput.value = addedWords.join();

  return addedWords;
};

const multipleInputJs = () => {
  const forms = document.querySelectorAll('.prevent-submit-on-enter');
  if (!forms.length) {
    return;
  }
  forms.forEach(form => {
    form.addEventListener('keypress', (e: any) => {
      if (e.keyCode === 13) {
        e.preventDefault();
      }
    });
  });

  const multipleInputBlock = document.querySelectorAll('.multiple-input-block');

  multipleInputBlock.forEach((multipleInputBlock: any) => {
    // prettier-ignore
    const multipleInput: any = multipleInputBlock.querySelector('.multiple-input');
    const tagsToSubmitInputClassName = multipleInput.getAttribute(
      'data-save-results-to',
    );
    if (!tagsToSubmitInputClassName) {
      console.error(
        'Please set data-save-results-to attribute to .multiple-input element',
      );
      return;
    }

    const tagsToSubmitInput: HTMLInputElement =
      multipleInputBlock.querySelector('.' + tagsToSubmitInputClassName);

    const wordsBlock: HTMLDivElement = multipleInputBlock.querySelector(
      '.multiple-input-items',
    );
    const wordDivs = wordsBlock.querySelectorAll('.multiple-input-word');
    let addedWords: string[] = [];
    wordDivs.forEach(el => {
      addedWords.push(el.innerHTML);
      el.addEventListener('click', () => {
        addedWords = handleClickOnTag(el, addedWords, tagsToSubmitInput);
      });
    });

    tagsToSubmitInput.value = addedWords.join();

    multipleInput.addEventListener('input', () => {
      let inputValue = multipleInput.value.trim().toLowerCase();
      if (inputValue.length > 32) {
        multipleInput.value = inputValue.slice(0, 32);
        return;
      }
    });

    multipleInput.addEventListener('keyup', (event: any) => {
      if (event.keyCode === 13 || event.keyCode === 188) {
        if (!multipleInput.value) {
          return;
        }
        let inputValue = multipleInput.value.trim().toLowerCase();
        if (!inputValue) {
          return;
        } else if (inputValue.length > 32) {
          multipleInput.value = inputValue.slice(0, 32);
          return;
        }

        // prettier-ignore
        if (
          inputValue.substring(inputValue.length - 1, inputValue.length) == ','
        ) {
          inputValue = inputValue.substring(0, inputValue.length - 1);
          event.target.value = inputValue;
        }
        inputValue = inputValue.replaceAll(',', '');

        if (addedWords.includes(inputValue)) {
          return;
        }

        const wordDiv = document.createElement('div');
        // prettier-ignore
        wordDiv.className = 'cursor-pointer multiple-input-word bg-sky-300 hover:bg-sky-400 dark:bg-blue-600 dark:hover:bg-blue-700 dark:text-white rounded text-center py-1/2 px-2';
        wordDiv.innerHTML = inputValue;
        addedWords.push(inputValue);
        wordDiv.addEventListener('click', () => {
          addedWords = handleClickOnTag(wordDiv, addedWords, tagsToSubmitInput);
        });

        wordsBlock.appendChild(wordDiv);
        multipleInput.value = '';
        tagsToSubmitInput.value = addedWords.join();
      }

      // Edit last tag on click "backspace"
      // Will be removed after demo
      // TODO Remove after demo
      // else if (event.keyCode === 8 && multipleInput.value.length === 0) {
      //   const addedWordsDivs = document.querySelectorAll('.multiple-input-word');
      //   const lastAdded = addedWordsDivs[addedWordsDivs.length - 1];
      //   if (!lastAdded) {
      //     return;
      //   }
      //   const word = lastAdded.innerHTML;
      //   if (word || word != '') {
      //     multipleInput.value = word;
      //     lastAdded.remove();

      //     addedWords.slice(0, addedWords.length - 1);
      //     tagsToSubmitInput.value = addedWords.join();
      //   }
      // }
    });
  });
};

export function initMultipleInput() {
  document.addEventListener('DOMContentLoaded', () => {
    multipleInputJs();
  });
}