import 'packs/public-path';
import { createRoot }  from 'react-dom/client';

import { IntlMessageFormat } from 'intl-messageformat';
import { defineMessages } from 'react-intl';

import Rails from '@rails/ujs';
import axios from 'axios';
import { createBrowserHistory }  from 'history';
import { throttle } from 'lodash';

import { timeAgoString }  from 'flavours/glitch/components/relative_timestamp';
import emojify  from 'flavours/glitch/features/emoji/emoji';
import loadKeyboardExtensions from 'flavours/glitch/load_keyboard_extensions';
import { loadLocale, getLocale } from 'flavours/glitch/locales';
import { loadPolyfills } from 'flavours/glitch/polyfills';

const messages = defineMessages({
  usernameTaken: { id: 'username.taken', defaultMessage: 'That username is taken. Try another' },
  passwordExceedsLength: { id: 'password_confirmation.exceeds_maxlength', defaultMessage: 'Password confirmation exceeds the maximum password length' },
  passwordDoesNotMatch: { id: 'password_confirmation.mismatching', defaultMessage: 'Password confirmation does not match' },
});

function main() {
  const { messages: localeData } = getLocale();

  const scrollToDetailedStatus = () => {
    const history = createBrowserHistory();
    const detailedStatuses = document.querySelectorAll('.public-layout .detailed-status');
    const location = history.location;

    if (detailedStatuses.length === 1 && (!location.state || !location.state.scrolledToDetailedStatus)) {
      detailedStatuses[0].scrollIntoView();
      history.replace(location.pathname, { ...location.state, scrolledToDetailedStatus: true });
    }
  };

  const getEmojiAnimationHandler = (swapTo) => {
    return ({ target }) => {
      target.src = target.getAttribute(swapTo);
    };
  };

  const locale = document.documentElement.lang;

  const dateTimeFormat = new Intl.DateTimeFormat(locale, {
    year: 'numeric',
    month: 'long',
    day: 'numeric',
    hour: 'numeric',
    minute: 'numeric',
  });

  const dateFormat = new Intl.DateTimeFormat(locale, {
    year: 'numeric',
    month: 'short',
    day: 'numeric',
    timeFormat: false,
  });

  const timeFormat = new Intl.DateTimeFormat(locale, {
    timeStyle: 'short',
    hour12: false,
  });

  const formatMessage = ({ id, defaultMessage }, values) => {
    const messageFormat = new IntlMessageFormat(localeData[id] || defaultMessage, locale);
    return messageFormat.format(values);
  };

  document.querySelectorAll('.emojify').forEach((content) => {
    content.innerHTML = emojify(content.innerHTML);
  });

  document.querySelectorAll('time.formatted').forEach((content) => {
    const datetime = new Date(content.getAttribute('datetime'));
    const formattedDate = dateTimeFormat.format(datetime);

    content.title = formattedDate;
    content.textContent = formattedDate;
  });

  const isToday = date => {
    const today = new Date();

    return date.getDate() === today.getDate() &&
      date.getMonth() === today.getMonth() &&
      date.getFullYear() === today.getFullYear();
  };
  const todayFormat = new IntlMessageFormat(localeData['relative_format.today'] || 'Today at {time}', locale);

  document.querySelectorAll('time.relative-formatted').forEach((content) => {
    const datetime = new Date(content.getAttribute('datetime'));

    let formattedContent;

    if (isToday(datetime)) {
      const formattedTime = timeFormat.format(datetime);

      formattedContent = todayFormat.format({ time: formattedTime });
    } else {
      formattedContent = dateFormat.format(datetime);
    }

    content.title = formattedContent;
    content.textContent = formattedContent;
  });

  document.querySelectorAll('time.time-ago').forEach((content) => {
    const datetime = new Date(content.getAttribute('datetime'));
    const now      = new Date();

    const timeGiven = content.getAttribute('datetime').includes('T');
    content.title = timeGiven ? dateTimeFormat.format(datetime) : dateFormat.format(datetime);
    content.textContent = timeAgoString({
      formatMessage,
      formatDate: (date, options) => (new Intl.DateTimeFormat(locale, options)).format(date),
    }, datetime, now, now.getFullYear(), timeGiven);
  });

  const reactComponents = document.querySelectorAll('[data-component]');
  if (reactComponents.length > 0) {
    import(/* webpackChunkName: "containers/media_container" */ 'flavours/glitch/containers/media_container')
      .then(({ default: MediaContainer }) => {
        reactComponents.forEach((component) => {
          Array.from(component.children).forEach((child) => {
            component.removeChild(child);
          });
        });

        const content = document.createElement('div');

        const root = createRoot(content);
        root.render(<MediaContainer locale={locale} components={reactComponents} />);
        document.body.appendChild(content);
        scrollToDetailedStatus();
      })
      .catch(error => {
        console.error(error);
        scrollToDetailedStatus();
      });
  } else {
    scrollToDetailedStatus();
  }

  Rails.delegate(document, '#user_account_attributes_username', 'input', throttle(() => {
    const username = document.getElementById('user_account_attributes_username');

    if (username.value && username.value.length > 0) {
      axios.get('/api/v1/accounts/lookup', { params: { acct: username.value } }).then(() => {
        username.setCustomValidity(formatMessage(messages.usernameTaken));
      }).catch(() => {
        username.setCustomValidity('');
      });
    } else {
      username.setCustomValidity('');
    }
  }, 500, { leading: false, trailing: true }));

  Rails.delegate(document, '#user_password,#user_password_confirmation', 'input', () => {
    const password = document.getElementById('user_password');
    const confirmation = document.getElementById('user_password_confirmation');
    if (!confirmation) return;

    if (confirmation.value && confirmation.value.length > password.maxLength) {
      confirmation.setCustomValidity(formatMessage(messages.passwordExceedsLength));
    } else if (password.value && password.value !== confirmation.value) {
      confirmation.setCustomValidity(formatMessage(messages.passwordDoesNotMatch));
    } else {
      confirmation.setCustomValidity('');
    }
  });

  Rails.delegate(document, '.custom-emoji', 'mouseover', getEmojiAnimationHandler('data-original'));
  Rails.delegate(document, '.custom-emoji', 'mouseout', getEmojiAnimationHandler('data-static'));

  Rails.delegate(document, '.status__content__spoiler-link', 'click', function() {
    const statusEl = this.parentNode.parentNode;

    if (statusEl.dataset.spoiler === 'expanded') {
      statusEl.dataset.spoiler = 'folded';
      this.textContent = (new IntlMessageFormat(localeData['status.show_more'] || 'Show more', locale)).format();
    } else {
      statusEl.dataset.spoiler = 'expanded';
      this.textContent = (new IntlMessageFormat(localeData['status.show_less'] || 'Show less', locale)).format();
    }

    return false;
  });

  document.querySelectorAll('.status__content__spoiler-link').forEach((spoilerLink) => {
    const statusEl = spoilerLink.parentNode.parentNode;
    const message = (statusEl.dataset.spoiler === 'expanded') ? (localeData['status.show_less'] || 'Show less') : (localeData['status.show_more'] || 'Show more');
    spoilerLink.textContent = (new IntlMessageFormat(message, locale)).format();
  });

  const toggleSidebar = () => {
    const sidebar = document.querySelector('.sidebar ul');
    const toggleButton = document.querySelector('.sidebar__toggle__icon');

    if (sidebar.classList.contains('visible')) {
      document.body.style.overflow = null;
      toggleButton.setAttribute('aria-expanded', 'false');
    } else {
      document.body.style.overflow = 'hidden';
      toggleButton.setAttribute('aria-expanded', 'true');
    }

    toggleButton.classList.toggle('active');
    sidebar.classList.toggle('visible');
  };

  Rails.delegate(document, '.sidebar__toggle__icon', 'click', () => {
    toggleSidebar();
  });

  Rails.delegate(document, '.sidebar__toggle__icon', 'keydown', e => {
    if (e.key === ' ' || e.key === 'Enter') {
      e.preventDefault();
      toggleSidebar();
    }
  });

  // Empty the honeypot fields in JS in case something like an extension
  // automatically filled them.
  Rails.delegate(document, '#registration_new_user,#new_user', 'submit', () => {
    ['user_website', 'user_confirm_password', 'registration_user_website', 'registration_user_confirm_password'].forEach(id => {
      const field = document.getElementById(id);
      if (field) {
        field.value = '';
      }
    });
  });
}

loadPolyfills()
  .then(loadLocale)
  .then(main)
  .then(loadKeyboardExtensions)
  .catch(error => {
    console.error(error);
  });