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'use strict';
const router = require('../router.js');
const api = require('../api.js');
const settings = require('../models/settings.js');
const uri = require('../util/uri.js');
const PostList = require('../models/post_list.js');
const topNavigation = require('../models/top_navigation.js');
const PageController = require('../controllers/page_controller.js');
const PostsHeaderView = require('../views/posts_header_view.js');
const PostsPageView = require('../views/posts_page_view.js');
const EmptyView = require('../views/empty_view.js');
const fields = [
'id', 'thumbnailUrl', 'type', 'safety',
'score', 'favoriteCount', 'commentCount', 'tags', 'version'];
class PostListController {
constructor(ctx) {
if (!api.hasPrivilege('posts:list')) {
this._view = new EmptyView();
this._view.showError('You don\'t have privileges to view posts.');
return;
}
topNavigation.activate('posts');
topNavigation.setTitle('Listing posts');
this._ctx = ctx;
this._pageController = new PageController();
this._headerView = new PostsHeaderView({
hostNode: this._pageController.view.pageHeaderHolderNode,
parameters: ctx.parameters,
enableSafety: api.safetyEnabled(),
canBulkEditTags: api.hasPrivilege('posts:bulk-edit:tags'),
canBulkEditSafety: api.hasPrivilege('posts:bulk-edit:safety'),
canViewMetrics: api.hasPrivilege('metrics:list'),
bulkEdit: {
tags: this._bulkEditTags,
},
});
this._headerView.addEventListener(
'navigate', e => this._evtNavigate(e));
this._syncPageController();
}
showSuccess(message) {
this._pageController.showSuccess(message);
}
showError(message) {
this._pageController.showError(message);
}
get _bulkEditTags() {
return (this._ctx.parameters.tag || '').split(/\s+/).filter(s => s);
}
get _bulkEditRelationsIds() {
return (this._ctx.parameters.relations || '').split(/\s+/).filter(s => s).map(id => parseInt(id));
}
_evtNavigate(e) {
router.showNoDispatch(
uri.formatClientLink('posts', e.detail.parameters));
Object.assign(this._ctx.parameters, e.detail.parameters);
this._syncPageController();
}
_evtTag(e) {
Promise.all(
this._bulkEditTags.map(tag =>
e.detail.post.tags.addByName(tag)))
.then(e.detail.post.save())
.catch(error => window.alert(error.message));
}
_evtUntag(e) {
for (let tag of this._bulkEditTags) {
e.detail.post.tags.removeByName(tag);
}
e.detail.post.save().catch(error => window.alert(error.message));
}
_evtChangeSafety(e) {
e.detail.post.safety = e.detail.safety;
e.detail.post.save().catch(error => window.alert(error.message));
}
_evtAddRelation(e) {
let addedPost = e.detail.post;
// If we're just starting to build this instance of relations, use the first post's list:
let relations = this._bulkEditRelationsIds || addedPost.relations;
for (let relationId of relations) {
addedPost.relations.push(relationId);
}
// Only save the updated post, the relationship will propagate to others automatically
addedPost.save().catch(error => window.alert(error.message));
relations.push(addedPost.id);
this._updateRelationsForBulkEdit(relations);
}
_evtRemoveRelation(e) {
let removedPost = e.detail.post;
let relations = this._bulkEditRelationsIds;
removedPost.relations = removedPost.relations
.filter(id => !relations.some(relationId => relationId == id));
// Only save the updated post, the relationship will propagate to others automatically
removedPost.save().catch(error => window.alert(error.message));
relations = relations.filter(id => id != removedPost.id);
this._updateRelationsForBulkEdit(relations);
}
_updateRelationsForBulkEdit(relations) {
//Whitespace instead of empty string so that it stays part of the query:
this._ctx.parameters.relations = relations.join(' ') || ' ';
}
_syncPageController() {
this._pageController.run({
parameters: this._ctx.parameters,
defaultLimit: parseInt(settings.get().postsPerPage),
getClientUrlForPage: (offset, limit) => {
const parameters = Object.assign(
{}, this._ctx.parameters, {offset: offset, limit: limit});
return uri.formatClientLink('posts', parameters);
},
requestPage: (offset, limit) => {
return PostList.search(
this._ctx.parameters.query, offset, limit, fields, this._ctx.parameters.cachenumber);
},
pageRenderer: pageCtx => {
Object.assign(pageCtx, {
canViewPosts: api.hasPrivilege('posts:view'),
canBulkEditTags: api.hasPrivilege('posts:bulk-edit:tags'),
canBulkEditSafety: api.hasPrivilege('posts:bulk-edit:safety'),
canViewMetrics: api.hasPrivilege('metrics:list'),
bulkEdit: {
tags: this._bulkEditTags,
relations: this._ctx.parameters.relations,
},
});
const view = new PostsPageView(pageCtx);
view.addEventListener('tag', e => this._evtTag(e));
view.addEventListener('untag', e => this._evtUntag(e));
view.addEventListener(
'changeSafety', e => this._evtChangeSafety(e));
view.addEventListener(
'addRelation', e => this._evtAddRelation(e));
view.addEventListener(
'removeRelation', e => this._evtRemoveRelation(e));
return view;
},
});
}
}
module.exports = router => {
router.enter(
['posts'],
(ctx, next) => { ctx.controller = new PostListController(ctx); });
};
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