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1 | import * as debug from 'debug' | |
2 | import { Injectable } from '@angular/core' | |
3 | import { NavigationCancel, NavigationEnd, Router } from '@angular/router' | |
4 | import { logger } from '@root-helpers/logger' | |
5 | import { ServerService } from '../server' | |
6 | import { SessionStorageService } from '../wrappers/storage.service' | |
7 | ||
8 | const debugLogger = debug('peertube:router:RedirectService') | |
9 | ||
10 | @Injectable() | |
11 | export class RedirectService { | |
12 | private static SESSION_STORAGE_LATEST_SESSION_URL_KEY = 'redirect-latest-session-url' | |
13 | ||
14 | // Default route could change according to the instance configuration | |
15 | static INIT_DEFAULT_ROUTE = '/videos/trending' | |
16 | static INIT_DEFAULT_TRENDING_ALGORITHM = 'most-viewed' | |
17 | ||
18 | private previousUrl: string | |
19 | private currentUrl: string | |
20 | ||
21 | private latestSessionUrl: string | |
22 | ||
23 | private redirectingToHomepage = false | |
24 | private defaultTrendingAlgorithm = RedirectService.INIT_DEFAULT_TRENDING_ALGORITHM | |
25 | private defaultRoute = RedirectService.INIT_DEFAULT_ROUTE | |
26 | ||
27 | constructor ( | |
28 | private router: Router, | |
29 | private serverService: ServerService, | |
30 | private storage: SessionStorageService | |
31 | ) { | |
32 | // The config is first loaded from the cache so try to get the default route | |
33 | const config = this.serverService.getHTMLConfig() | |
34 | if (config?.instance?.defaultClientRoute) { | |
35 | this.defaultRoute = config.instance.defaultClientRoute | |
36 | } | |
37 | if (config?.trending?.videos?.algorithms?.default) { | |
38 | this.defaultTrendingAlgorithm = config.trending.videos.algorithms.default | |
39 | } | |
40 | ||
41 | this.latestSessionUrl = this.storage.getItem(RedirectService.SESSION_STORAGE_LATEST_SESSION_URL_KEY) | |
42 | this.storage.removeItem(RedirectService.SESSION_STORAGE_LATEST_SESSION_URL_KEY) | |
43 | ||
44 | debugLogger('Loaded latest session URL %s', this.latestSessionUrl) | |
45 | ||
46 | // Track previous url | |
47 | this.currentUrl = this.router.url | |
48 | router.events.subscribe(event => { | |
49 | if (event instanceof NavigationEnd || event instanceof NavigationCancel) { | |
50 | if ([ '/401', '/404' ].includes(event.url)) return | |
51 | ||
52 | this.previousUrl = this.currentUrl | |
53 | this.currentUrl = event.url | |
54 | ||
55 | debugLogger('Previous URL is %s, current URL is %s', this.previousUrl, this.currentUrl) | |
56 | debugLogger('Setting %s as latest URL in session storage.', this.currentUrl) | |
57 | ||
58 | this.storage.setItem(RedirectService.SESSION_STORAGE_LATEST_SESSION_URL_KEY, this.currentUrl) | |
59 | } | |
60 | }) | |
61 | } | |
62 | ||
63 | getDefaultRoute () { | |
64 | return this.defaultRoute | |
65 | } | |
66 | ||
67 | getDefaultTrendingAlgorithm () { | |
68 | return this.defaultTrendingAlgorithm | |
69 | } | |
70 | ||
71 | redirectToLatestSessionRoute () { | |
72 | return this.doRedirect(this.latestSessionUrl) | |
73 | } | |
74 | ||
75 | redirectToPreviousRoute (fallbackRoute?: string) { | |
76 | return this.doRedirect(this.previousUrl, fallbackRoute) | |
77 | } | |
78 | ||
79 | getPreviousUrl () { | |
80 | return this.previousUrl | |
81 | } | |
82 | ||
83 | redirectToHomepage (skipLocationChange = false) { | |
84 | if (this.redirectingToHomepage) return | |
85 | ||
86 | this.redirectingToHomepage = true | |
87 | ||
88 | logger.info(`Redirecting to ${this.defaultRoute}...`) | |
89 | ||
90 | this.router.navigateByUrl(this.defaultRoute, { skipLocationChange }) | |
91 | .then(() => this.redirectingToHomepage = false) | |
92 | .catch(err => { | |
93 | this.redirectingToHomepage = false | |
94 | ||
95 | logger.error(`Cannot navigate to ${this.defaultRoute}, resetting default route to ${RedirectService.INIT_DEFAULT_ROUTE}`, err) | |
96 | ||
97 | this.defaultRoute = RedirectService.INIT_DEFAULT_ROUTE | |
98 | return this.router.navigateByUrl(this.defaultRoute, { skipLocationChange }) | |
99 | }) | |
100 | ||
101 | } | |
102 | ||
103 | private doRedirect (redirectUrl: string, fallbackRoute?: string) { | |
104 | debugLogger('Redirecting on %s', redirectUrl) | |
105 | ||
106 | if (this.isValidRedirection(redirectUrl)) { | |
107 | return this.router.navigateByUrl(redirectUrl) | |
108 | } | |
109 | ||
110 | debugLogger('%s is not a valid redirection, try fallback route %s', redirectUrl, fallbackRoute) | |
111 | if (fallbackRoute) { | |
112 | return this.router.navigateByUrl(fallbackRoute) | |
113 | } | |
114 | ||
115 | debugLogger('There was no fallback route, redirecting to homepage') | |
116 | return this.redirectToHomepage() | |
117 | } | |
118 | ||
119 | private isValidRedirection (redirectUrl: string) { | |
120 | const exceptions = [ | |
121 | '/verify-account', | |
122 | '/reset-password', | |
123 | '/login' | |
124 | ] | |
125 | ||
126 | if (!redirectUrl || redirectUrl === '/') return false | |
127 | ||
128 | return exceptions.every(e => !redirectUrl.startsWith(e)) | |
129 | } | |
130 | } |