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1 | import { Injectable } from '@angular/core'; | |
2 | import { Http, Response, URLSearchParams } from '@angular/http'; | |
3 | import { Observable } from 'rxjs/Rx'; | |
4 | ||
5 | import { Pagination } from './pagination.model'; | |
6 | import { Search } from '../../shared/index'; | |
7 | import { SortField } from './sort-field.type'; | |
8 | import { AuthService } from '../../users/index'; | |
9 | import { Video } from './video.model'; | |
10 | ||
11 | @Injectable() | |
12 | export class VideoService { | |
13 | private static BASE_VIDEO_URL = '/api/v1/videos/'; | |
14 | ||
15 | constructor( | |
16 | private authService: AuthService, | |
17 | private http: Http | |
18 | ) {} | |
19 | ||
20 | getVideo(id: string) { | |
21 | return this.http.get(VideoService.BASE_VIDEO_URL + id) | |
22 | .map(res => <Video> res.json()) | |
23 | .catch(this.handleError); | |
24 | } | |
25 | ||
26 | getVideos(pagination: Pagination, sort: SortField) { | |
27 | const params = this.createPaginationParams(pagination); | |
28 | ||
29 | if (sort) params.set('sort', sort); | |
30 | ||
31 | return this.http.get(VideoService.BASE_VIDEO_URL, { search: params }) | |
32 | .map(res => res.json()) | |
33 | .map(this.extractVideos) | |
34 | .catch(this.handleError); | |
35 | } | |
36 | ||
37 | removeVideo(id: string) { | |
38 | const options = this.authService.getAuthRequestOptions(); | |
39 | return this.http.delete(VideoService.BASE_VIDEO_URL + id, options) | |
40 | .map(res => <number> res.status) | |
41 | .catch(this.handleError); | |
42 | } | |
43 | ||
44 | searchVideos(search: Search, pagination: Pagination, sort: SortField) { | |
45 | const params = this.createPaginationParams(pagination); | |
46 | ||
47 | if (search.field) params.set('field', search.field); | |
48 | if (sort) params.set('sort', sort); | |
49 | ||
50 | return this.http.get(VideoService.BASE_VIDEO_URL + 'search/' + encodeURIComponent(search.value), { search: params }) | |
51 | .map(res => res.json()) | |
52 | .map(this.extractVideos) | |
53 | .catch(this.handleError); | |
54 | } | |
55 | ||
56 | private createPaginationParams(pagination: Pagination) { | |
57 | const params = new URLSearchParams(); | |
58 | const start: number = (pagination.currentPage - 1) * pagination.itemsPerPage; | |
59 | const count: number = pagination.itemsPerPage; | |
60 | ||
61 | params.set('start', start.toString()); | |
62 | params.set('count', count.toString()); | |
63 | ||
64 | return params; | |
65 | } | |
66 | ||
67 | private extractVideos(body: any) { | |
68 | const videos_json = body.data; | |
69 | const totalVideos = body.total; | |
70 | const videos = []; | |
71 | for (const video_json of videos_json) { | |
72 | videos.push(new Video(video_json)); | |
73 | } | |
74 | ||
75 | return { videos, totalVideos }; | |
76 | } | |
77 | ||
78 | private handleError(error: Response) { | |
79 | console.error(error); | |
80 | return Observable.throw(error.json().error || 'Server error'); | |
81 | } | |
82 | } |