import 'packs/public-path';
import loadPolyfills from 'flavours/glitch/load_polyfills';
import ready from 'flavours/glitch/ready';
import loadKeyboardExtensions from 'flavours/glitch/load_keyboard_extensions';
import axios from 'axios';
import { throttle } from 'lodash';
import { defineMessages } from 'react-intl';
import * as IntlMessageFormat  from 'intl-messageformat';
import { timeAgoString }  from 'flavours/glitch/components/relative_timestamp';
import { delegate }  from '@rails/ujs';
import emojify  from 'flavours/glitch/features/emoji/emoji';
import { getLocale }  from 'locales';
import React  from 'react';
import ReactDOM  from 'react-dom';
import { createBrowserHistory }  from 'history';

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 { 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);
    };
  };

  ready(() => {
    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);
    };

    [].forEach.call(document.querySelectorAll('.emojify'), (content) => {
      content.innerHTML = emojify(content.innerHTML);
    });

    [].forEach.call(document.querySelectorAll('time.formatted'), (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);

    [].forEach.call(document.querySelectorAll('time.relative-formatted'), (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;
    });

    [].forEach.call(document.querySelectorAll('time.time-ago'), (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 }) => {
          [].forEach.call(reactComponents, (component) => {
            [].forEach.call(component.children, (child) => {
              component.removeChild(child);
            });
          });

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

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

    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 }));

    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('');
      }
    });

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

    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;
    });

    [].forEach.call(document.querySelectorAll('.status__content__spoiler-link'), (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');
  };

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

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