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nodebb/src/topics/thumbs.js

118 lines
3.6 KiB
JavaScript

'use strict';
const nconf = require('nconf');
const path = require('path');
const validator = require('validator');
const db = require('../database');
const file = require('../file');
const plugins = require('../plugins');
const posts = require('../posts');
const meta = require('../meta');
const cache = require('../cache');
const Thumbs = module.exports;
Thumbs.exists = async function (tid, path) {
// TODO: tests
return db.isSortedSetMember(`topic:${tid}:thumbs`, path);
};
Thumbs.get = async function (tids) {
// Allow singular or plural usage
let singular = false;
if (!Array.isArray(tids)) {
tids = [tids];
singular = true;
}
if (!meta.config.allowTopicsThumbnail) {
return singular ? null : tids.map(() => []);
}
const hasTimestampPrefix = /^\d+-/;
const upload_url = nconf.get('upload_url');
const sets = tids.map(tid => `${validator.isUUID(String(tid)) ? 'draft' : 'topic'}:${tid}:thumbs`);
const thumbs = await Promise.all(sets.map(set => getThumbs(set)));
let response = thumbs.map((thumbSet, idx) => thumbSet.map(thumb => ({
id: tids[idx],
name: (() => {
const name = path.basename(thumb);
return hasTimestampPrefix.test(name) ? name.slice(14) : name;
})(),
url: thumb.startsWith('http') ? thumb : path.posix.join(upload_url, thumb),
})));
({ thumbs: response } = await plugins.hooks.fire('filter:topics.getThumbs', { tids, thumbs: response }));
return singular ? response.pop() : response;
};
async function getThumbs(set) {
const cached = cache.get(set);
if (cached !== undefined) {
return cached.slice();
}
const thumbs = await db.getSortedSetRange(set, 0, -1);
cache.set(set, thumbs);
return thumbs.slice();
}
Thumbs.associate = async function ({ id, path: relativePath, url }) {
// Associates a newly uploaded file as a thumb to the passed-in draft or topic
const isDraft = validator.isUUID(String(id));
let value = relativePath || url;
const set = `${isDraft ? 'draft' : 'topic'}:${id}:thumbs`;
const numThumbs = await db.sortedSetCard(set);
// Normalize the path to allow for changes in upload_path (and so upload_url can be appended if needed)
if (relativePath) {
value = value.replace(nconf.get('upload_path'), '');
}
await db.sortedSetAdd(set, numThumbs, value);
cache.del(set);
// Associate thumbnails with the main pid (only on local upload)
if (!isDraft && relativePath) {
const topics = require('.');
const mainPid = (await topics.getMainPids([id]))[0];
posts.uploads.associate(mainPid, relativePath.replace('/files/', ''));
}
};
Thumbs.migrate = async function (uuid, id) {
// Converts the draft thumb zset to the topic zset (combines thumbs if applicable)
const set = `draft:${uuid}:thumbs`;
const thumbs = await db.getSortedSetRange(set, 0, -1);
await Promise.all(thumbs.map(async path => await Thumbs.associate({ id, path })));
await db.delete(set);
cache.del(set);
};
Thumbs.delete = async function (id, relativePath) {
const isDraft = validator.isUUID(String(id));
const set = `${isDraft ? 'draft' : 'topic'}:${id}:thumbs`;
const absolutePath = path.join(nconf.get('upload_path'), relativePath);
const [associated, existsOnDisk] = await Promise.all([
db.isSortedSetMember(set, relativePath),
file.exists(absolutePath),
]);
if (associated) {
await db.sortedSetRemove(set, relativePath);
cache.del(set);
if (existsOnDisk) {
await file.delete(absolutePath);
}
// Dissociate thumbnails with the main pid
if (!isDraft) {
const topics = require('.');
const mainPid = (await topics.getMainPids([id]))[0];
posts.uploads.dissociate(mainPid, relativePath.replace('/files/', ''));
}
}
};