120 lines
2.5 KiB
TypeScript
120 lines
2.5 KiB
TypeScript
/**
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* Module dependencies
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*/
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import * as mongo from 'mongodb';
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import $ from 'cafy';
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const escapeRegexp = require('escape-regexp');
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import Post from '../../models/post';
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import serialize from '../../serializers/post';
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import config from '../../../conf';
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/**
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* Search a post
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*
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* @param {any} params
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* @param {any} me
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* @return {Promise<any>}
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*/
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module.exports = (params, me) => new Promise(async (res, rej) => {
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// Get 'query' parameter
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const [query, queryError] = $(params.query).string().pipe(x => x != '').$;
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if (queryError) return rej('invalid query param');
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// Get 'offset' parameter
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const [offset = 0, offsetErr] = $(params.offset).optional.number().min(0).$;
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if (offsetErr) return rej('invalid offset param');
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// Get 'max' parameter
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const [max = 10, maxErr] = $(params.max).optional.number().range(1, 30).$;
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if (maxErr) return rej('invalid max param');
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// If Elasticsearch is available, search by $
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// If not, search by MongoDB
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(config.elasticsearch.enable ? byElasticsearch : byNative)
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(res, rej, me, query, offset, max);
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});
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// Search by MongoDB
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async function byNative(res, rej, me, query, offset, max) {
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const escapedQuery = escapeRegexp(query);
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// Search posts
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const posts = await Post
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.find({
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text: new RegExp(escapedQuery)
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}, {
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sort: {
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_id: -1
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},
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limit: max,
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skip: offset
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});
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// Serialize
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res(await Promise.all(posts.map(async post =>
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await serialize(post, me))));
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}
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// Search by Elasticsearch
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async function byElasticsearch(res, rej, me, query, offset, max) {
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const es = require('../../db/elasticsearch');
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es.search({
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index: 'misskey',
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type: 'post',
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body: {
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size: max,
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from: offset,
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query: {
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simple_query_string: {
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fields: ['text'],
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query: query,
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default_operator: 'and'
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}
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},
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sort: [
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{ _doc: 'desc' }
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],
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highlight: {
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pre_tags: ['<mark>'],
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post_tags: ['</mark>'],
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encoder: 'html',
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fields: {
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text: {}
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}
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}
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}
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}, async (error, response) => {
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if (error) {
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console.error(error);
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return res(500);
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}
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if (response.hits.total === 0) {
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return res([]);
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}
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const hits = response.hits.hits.map(hit => new mongo.ObjectID(hit._id));
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// Fetch found posts
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const posts = await Post
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.find({
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_id: {
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$in: hits
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}
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}, {
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sort: {
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_id: -1
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}
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});
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posts.map(post => {
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post._highlight = response.hits.hits.filter(hit => post._id.equals(hit._id))[0].highlight.text[0];
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});
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// Serialize
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res(await Promise.all(posts.map(async post =>
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await serialize(post, me))));
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});
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}
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