import { post } from '@rails/request.js';

import I18n from 'retrospring/i18n';
import { showNotification, showErrorNotification } from 'utilities/notifications';

let compositionJustEnded = false;

function createComment(input: HTMLInputElement, id: string, counter: Element, group: Element) {
  if (input.value.length > 512) {
    group.classList.add('has-error');
    return true;
  }

  input.disabled = true;

  post('/ajax/create_comment', {
    body: {
      answer: id,
      comment: input.value
    },
    contentType: 'application/json'
  })
    .then(async response => {
      const data = await response.json;

      if (data.success) {
        document.querySelector(`#ab-comments-${id}`).innerHTML = data.render;
        const commentCount = document.getElementById(`#ab-comment-count-${id}`);
        if (commentCount) {
          commentCount.innerHTML = data.count;
        }
        input.value = '';
        counter.innerHTML = String(512);
      }

      showNotification(data.message, data.success);
    })
    .catch(err => {
      console.log(err);
      showErrorNotification(I18n.translate('frontend.error.message'));
    })
    .finally(() => {
      input.disabled = false;
    });
}

export function commentCreateKeyboardHandler(event: KeyboardEvent): boolean {
  if (compositionJustEnded && event.which == 13) {
    compositionJustEnded = false;
    return;
  }

  const input = event.target as HTMLInputElement;
  const id = input.dataset.aId;
  const counter = document.querySelector(`#ab-comment-charcount-${id}`);
  const group = document.querySelector(`[name=ab-comment-new-group][data-a-id="${id}"]`);

  if ((event.ctrlKey || event.metaKey) && event.which === 13) {
    event.preventDefault();

    createComment(input, id, counter, group);
  }
}

export function commentCreateClickHandler(event: MouseEvent): void {
  event.preventDefault();

  const button = event.target as HTMLButtonElement;
  const id = button.dataset.aId;
  const input = document.querySelector<HTMLInputElement>(`[name="ab-comment-new"][data-a-id="${id}"]`);
  const counter = document.querySelector(`#ab-comment-charcount-${id}`);
  const group = document.querySelector(`[name=ab-comment-new-group][data-a-id="${id}"]`);

  createComment(input, id, counter, group);
}

export function commentComposeStart(): boolean {
  compositionJustEnded = false;
  return true;
}

export function commentComposeEnd(): boolean {
  compositionJustEnded = true;
  return true;
}