import { iconNode } from 'discourse-common/lib/icon-library';
import { createWidget } from 'discourse/widgets/widget';
import { h } from 'virtual-dom';
import { avatarFor } from 'discourse/widgets/post';
import hbs from 'discourse/widgets/hbs-compiler';

createWidget('pm-remove-group-link', {
  tagName: 'a.remove-invited',
  template: hbs`{{d-icon "times"}}`,

  click() {
    bootbox.confirm(I18n.t("private_message_info.remove_allowed_group", {name: this.attrs.name}), (confirmed) => {
      if (confirmed) { this.sendWidgetAction('removeAllowedGroup', this.attrs); }
    });
  }
});

createWidget('pm-map-user-group', {
  tagName: 'div.user.group',

  transform(attrs) {
    return { href: Discourse.getURL(`/groups/${attrs.group.name}`) };
  },

  template: hbs`
    {{fa-icon 'users'}}
    <a href={{transformed.href}}>{{attrs.group.name}}</a>
    {{#if attrs.canRemoveAllowedUsers}}
      {{attach widget="pm-remove-group-link" attrs=attrs.group}}
    {{/if}}
  `
});

createWidget('pm-remove-link', {
  tagName: 'a.remove-invited',
  template: hbs`{{d-icon "times"}}`,

  click() {
    const messageKey = this.attrs.isCurrentUser ? 'leave_message' : 'remove_allowed_user';

    bootbox.confirm(I18n.t(`private_message_info.${messageKey}`, { name: this.attrs.user.username }), confirmed => {
      if (confirmed) {
        this.sendWidgetAction('removeAllowedUser', this.attrs.user);
      }
    });
  }
});

createWidget('pm-map-user', {
  tagName: 'div.user',

  html(attrs) {
    const user = attrs.user;
    const avatar = avatarFor('small', { template: user.avatar_template, username: user.username });
    const link = h('a', { attributes: { href: user.get('path') } }, [ avatar, ' ', user.username ]);
    const result = [link];
    const isCurrentUser = attrs.canRemoveSelfId === user.get('id');

    if (attrs.canRemoveAllowedUsers || isCurrentUser) {
      result.push(' ');
      result.push(this.attach('pm-remove-link', { user, isCurrentUser } ));
    }

    return result;
  }
});

export default createWidget('private-message-map', {
  tagName: 'section.information.private-message-map',

  html(attrs) {
    const participants = [];

    if (attrs.allowedGroups.length) {
      participants.push(attrs.allowedGroups.map(group => {
        return this.attach('pm-map-user-group', {
          group,
          canRemoveAllowedUsers: attrs.canRemoveAllowedUsers
        });
      }));
    }

    const allowedUsersLength = attrs.allowedUsers.length;

    if (allowedUsersLength) {
      participants.push(attrs.allowedUsers.map(au => {
        return this.attach('pm-map-user', {
          user: au,
          canRemoveAllowedUsers: attrs.canRemoveAllowedUsers,
          canRemoveSelfId: attrs.canRemoveSelfId
        });
      }));
    }

    const result = [ h('h3', [iconNode('envelope'), ' ', I18n.t('private_message_info.title')]),
                     h('div.participants.clearfix', participants) ];

    if (attrs.canInvite) {
      result.push(h('div.controls', this.attach('button', {
        action: 'showInvite',
        label: 'private_message_info.invite',
        className: 'btn'
      })));
    }

    return result;
  }
});