rudeshark.net/src/api/endpoints/posts/search.ts

124 lines
2.6 KiB
TypeScript
Raw Normal View History

2016-12-28 23:49:51 +01:00
'use strict';
/**
* Module dependencies
*/
import * as mongo from 'mongodb';
2017-03-02 22:48:26 +01:00
import it from '../../it';
2017-01-20 10:08:08 +01:00
const escapeRegexp = require('escape-regexp');
2016-12-28 23:49:51 +01:00
import Post from '../../models/post';
import serialize from '../../serializers/post';
2017-01-20 10:08:08 +01:00
import config from '../../../conf';
2016-12-28 23:49:51 +01:00
/**
* Search a post
*
2017-03-01 09:37:01 +01:00
* @param {any} params
* @param {any} me
* @return {Promise<any>}
2016-12-28 23:49:51 +01:00
*/
module.exports = (params, me) =>
new Promise(async (res, rej) =>
{
// Get 'query' parameter
2017-03-02 22:48:26 +01:00
const [query, queryError] = it(params.query).expect.string().required().trim().validate(x => x != '').qed();
if (queryError) return rej('invalid query param');
2016-12-28 23:49:51 +01:00
// Get 'offset' parameter
2017-03-02 22:48:26 +01:00
const [offset, offsetErr] = it(params.offset).expect.number().min(0).default(0).qed();
if (offsetErr) return rej('invalid offset param');
2016-12-28 23:49:51 +01:00
// Get 'max' parameter
2017-03-02 22:48:26 +01:00
const [max, maxErr] = it(params.max).expect.number().range(1, 30).default(10).qed();
if (maxErr) return rej('invalid max param');
2016-12-28 23:49:51 +01:00
// If Elasticsearch is available, search by it
// If not, search by MongoDB
(config.elasticsearch.enable ? byElasticsearch : byNative)
(res, rej, me, query, offset, max);
});
// Search by MongoDB
async function byNative(res, rej, me, query, offset, max) {
const escapedQuery = escapeRegexp(query);
// Search posts
const posts = await Post
.find({
text: new RegExp(escapedQuery)
}, {
sort: {
_id: -1
},
limit: max,
skip: offset
2017-01-17 03:11:22 +01:00
});
2016-12-28 23:49:51 +01:00
// Serialize
res(await Promise.all(posts.map(async post =>
await serialize(post, me))));
}
// Search by Elasticsearch
async function byElasticsearch(res, rej, me, query, offset, max) {
const es = require('../../db/elasticsearch');
es.search({
index: 'misskey',
type: 'post',
body: {
size: max,
from: offset,
query: {
simple_query_string: {
fields: ['text'],
query: query,
default_operator: 'and'
}
},
sort: [
{ _doc: 'desc' }
],
highlight: {
pre_tags: ['<mark>'],
post_tags: ['</mark>'],
encoder: 'html',
fields: {
text: {}
}
}
}
}, async (error, response) => {
if (error) {
console.error(error);
return res(500);
}
if (response.hits.total === 0) {
return res([]);
}
const hits = response.hits.hits.map(hit => new mongo.ObjectID(hit._id));
2017-02-27 08:54:20 +01:00
// Fetch found posts
2016-12-28 23:49:51 +01:00
const posts = await Post
.find({
_id: {
$in: hits
}
2017-01-17 03:11:22 +01:00
}, {
2016-12-28 23:49:51 +01:00
sort: {
_id: -1
}
2017-01-17 03:11:22 +01:00
});
2016-12-28 23:49:51 +01:00
posts.map(post => {
post._highlight = response.hits.hits.filter(hit => post._id.equals(hit._id))[0].highlight.text[0];
});
// Serialize
res(await Promise.all(posts.map(async post =>
await serialize(post, me))));
});
}