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authorOzoneGrif2020-02-24 01:15:14 +0100
committerGitHub2020-02-24 01:15:14 +0100
commit2a458e25c0510798120dddbd85cef5ee440c2a2a (patch)
tree77d6958950e1c6a2ad425da1c095fefce58b05e4 /viewer/src/services/indexsearch.ts
parente42f4e864bac21ed3b19d1869df2cdd4f8c3433c (diff)
parenteb00c2a7874608f70ec7768eae8d006a22bc0a54 (diff)
downloadldgallery-2a458e25c0510798120dddbd85cef5ee440c2a2a.tar.gz
Merge pull request #144 from pacien/oz-search-overhaul
viewer: major code and search mode overhaul > Search indicator in the breadcrumbs: should be shown as clickable instead of being .disabled Not agreeing with this one.
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1/* ldgallery - A static generator which turns a collection of tagged
2-- pictures into a searchable web gallery.
3--
4-- Copyright (C) 2019-2020 Guillaume FOUET
5--
6-- This program is free software: you can redistribute it and/or modify
7-- it under the terms of the GNU Affero General Public License as
8-- published by the Free Software Foundation, either version 3 of the
9-- License, or (at your option) any later version.
10--
11-- This program is distributed in the hope that it will be useful,
12-- but WITHOUT ANY WARRANTY; without even the implied warranty of
13-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14-- GNU Affero General Public License for more details.
15--
16-- You should have received a copy of the GNU Affero General Public License
17-- along with this program. If not, see <https://www.gnu.org/licenses/>.
18*/
19
20import { Operation } from '@/@types/Operation';
21
22export default class IndexSearch {
23
24 // Results of the search (by tags)
25 public static search(searchTags: Tag.Search[], rootPath: string): Gallery.Item[] {
26 const byOperation = this.extractTagsByOperation(searchTags);
27 const intersection = this.extractIntersection(byOperation);
28 const substraction = this.extractSubstraction(byOperation);
29 return this.aggregateAll(byOperation, intersection, substraction)
30 .filter(item => item.path.startsWith(rootPath));
31 }
32
33 private static extractTagsByOperation(searchTags: Tag.Search[]): Tag.SearchByOperation {
34 let byOperation: Tag.SearchByOperation = {};
35 Object.values(Operation).forEach(
36 operation => (byOperation[operation] = searchTags.filter(tag => tag.operation === operation))
37 );
38 return byOperation;
39 }
40
41 private static extractIntersection(byOperation: Tag.SearchByOperation): Set<Gallery.Item> {
42 let intersection = new Set<Gallery.Item>();
43 if (byOperation[Operation.INTERSECTION].length > 0) {
44 byOperation[Operation.INTERSECTION]
45 .map(tag => tag.items)
46 .reduce((a, b) => a.filter(c => b.includes(c)))
47 .flatMap(items => items)
48 .forEach(item => intersection.add(item));
49 }
50 return intersection;
51 }
52
53 private static extractSubstraction(byOperation: Tag.SearchByOperation): Set<Gallery.Item> {
54 let substraction = new Set<Gallery.Item>();
55 if (byOperation[Operation.SUBSTRACTION].length > 0) {
56 byOperation[Operation.SUBSTRACTION].flatMap(tag => tag.items).forEach(item => substraction.add(item));
57 }
58 return substraction;
59 }
60
61 private static aggregateAll(
62 byOperation: Tag.SearchByOperation,
63 intersection: Set<Gallery.Item>,
64 substraction: Set<Gallery.Item>
65 ): Gallery.Item[] {
66 byOperation[Operation.ADDITION].flatMap(tag => tag.items).forEach(item => intersection.add(item));
67 substraction.forEach(item => intersection.delete(item));
68 return [...intersection];
69 }
70}