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67ed6552 | 1 | import { first } from 'rxjs/operators' |
1a00c561 | 2 | import { Injectable } from '@angular/core' |
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3 | import { UserLocalStorageKeys } from '@root-helpers/users' |
4 | import { ServerConfig, ServerConfigTheme } from '@shared/models' | |
5 | import { environment } from '../../../environments/environment' | |
67ed6552 C |
6 | import { AuthService } from '../auth' |
7 | import { PluginService } from '../plugins/plugin.service' | |
8 | import { ServerService } from '../server' | |
67ed6552 | 9 | import { UserService } from '../users/user.service' |
a4ff3100 | 10 | import { LocalStorageService } from '../wrappers/storage.service' |
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11 | |
12 | @Injectable() | |
13 | export class ThemeService { | |
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14 | |
15 | private oldThemeName: string | |
16 | private themes: ServerConfigTheme[] = [] | |
17 | ||
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18 | private themeFromLocalStorage: ServerConfigTheme |
19 | private themeDOMLinksFromLocalStorage: HTMLLinkElement[] = [] | |
20 | ||
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21 | private serverConfig: ServerConfig |
22 | ||
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23 | constructor ( |
24 | private auth: AuthService, | |
d3217560 | 25 | private userService: UserService, |
ffb321be | 26 | private pluginService: PluginService, |
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27 | private server: ServerService, |
28 | private localStorageService: LocalStorageService | |
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29 | ) {} |
30 | ||
31 | initialize () { | |
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32 | // Try to load from local storage first, so we don't have to wait network requests |
33 | this.loadAndSetFromLocalStorage() | |
34 | ||
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35 | this.serverConfig = this.server.getTmpConfig() |
36 | this.server.getConfig() | |
37 | .subscribe(config => { | |
38 | this.serverConfig = config | |
39 | ||
40 | const themes = this.serverConfig.theme.registered | |
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41 | |
42 | this.removeThemeFromLocalStorageIfNeeded(themes) | |
43 | this.injectThemes(themes) | |
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44 | |
45 | this.listenUserTheme() | |
46 | }) | |
47 | } | |
48 | ||
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49 | private injectThemes (themes: ServerConfigTheme[], fromLocalStorage = false) { |
50 | this.themes = themes | |
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51 | |
52 | console.log('Injecting %d themes.', this.themes.length) | |
53 | ||
a2ffd046 | 54 | const head = this.getHeadElement() |
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55 | |
56 | for (const theme of this.themes) { | |
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57 | // Already added this theme? |
58 | if (fromLocalStorage === false && this.themeFromLocalStorage && this.themeFromLocalStorage.name === theme.name) continue | |
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59 | |
60 | for (const css of theme.css) { | |
61 | const link = document.createElement('link') | |
62 | ||
63 | const href = environment.apiUrl + `/themes/${theme.name}/${theme.version}/css/${css}` | |
64 | link.setAttribute('href', href) | |
65 | link.setAttribute('rel', 'alternate stylesheet') | |
66 | link.setAttribute('type', 'text/css') | |
67 | link.setAttribute('title', theme.name) | |
68 | link.setAttribute('disabled', '') | |
69 | ||
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70 | if (fromLocalStorage === true) this.themeDOMLinksFromLocalStorage.push(link) |
71 | ||
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72 | head.appendChild(link) |
73 | } | |
74 | } | |
75 | } | |
76 | ||
77 | private getCurrentTheme () { | |
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78 | if (this.themeFromLocalStorage) return this.themeFromLocalStorage.name |
79 | ||
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80 | const theme = this.auth.isLoggedIn() |
81 | ? this.auth.getUser().theme | |
82 | : this.userService.getAnonymousUser().theme | |
ffb321be | 83 | |
d3217560 | 84 | if (theme !== 'instance-default') return theme |
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85 | |
86 | const instanceTheme = this.serverConfig.theme.default | |
87 | if (instanceTheme !== 'default') return instanceTheme | |
88 | ||
89 | // Default to dark theme if available and wanted by the user | |
90 | if ( | |
91 | this.themes.find(t => t.name === 'dark') && | |
92 | window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches | |
93 | ) { | |
94 | return 'dark' | |
95 | } | |
96 | ||
97 | return instanceTheme | |
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98 | } |
99 | ||
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100 | private loadTheme (name: string) { |
101 | const links = document.getElementsByTagName('link') | |
102 | for (let i = 0; i < links.length; i++) { | |
103 | const link = links[ i ] | |
104 | if (link.getAttribute('rel').indexOf('style') !== -1 && link.getAttribute('title')) { | |
105 | link.disabled = link.getAttribute('title') !== name | |
106 | } | |
107 | } | |
108 | } | |
109 | ||
110 | private updateCurrentTheme () { | |
a2ffd046 | 111 | if (this.oldThemeName) this.removeThemePlugins(this.oldThemeName) |
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112 | |
113 | const currentTheme = this.getCurrentTheme() | |
114 | ||
115 | console.log('Enabling %s theme.', currentTheme) | |
116 | ||
117 | this.loadTheme(currentTheme) | |
d00dc28d | 118 | |
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119 | const theme = this.getTheme(currentTheme) |
120 | if (theme) { | |
121 | console.log('Adding scripts of theme %s.', currentTheme) | |
f0c5e8b6 | 122 | this.pluginService.addPlugin(theme, true) |
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123 | |
124 | this.pluginService.reloadLoadedScopes() | |
a2ffd046 | 125 | |
a4ff3100 | 126 | this.localStorageService.setItem(UserLocalStorageKeys.LAST_ACTIVE_THEME, JSON.stringify(theme), false) |
a2ffd046 | 127 | } else { |
a4ff3100 | 128 | this.localStorageService.removeItem(UserLocalStorageKeys.LAST_ACTIVE_THEME, false) |
e3f7f600 | 129 | } |
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130 | |
131 | this.oldThemeName = currentTheme | |
132 | } | |
133 | ||
134 | private listenUserTheme () { | |
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135 | // We don't need them anymore |
136 | this.themeFromLocalStorage = undefined | |
137 | this.themeDOMLinksFromLocalStorage = [] | |
138 | ||
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139 | if (!this.auth.isLoggedIn()) { |
140 | this.updateCurrentTheme() | |
d3217560 | 141 | |
a4ff3100 | 142 | this.localStorageService.watch([ UserLocalStorageKeys.THEME ]).subscribe( |
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143 | () => this.updateCurrentTheme() |
144 | ) | |
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145 | } |
146 | ||
ffb321be | 147 | this.auth.userInformationLoaded |
7c93905d | 148 | .pipe(first()) |
ffb321be | 149 | .subscribe(() => this.updateCurrentTheme()) |
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150 | } |
151 | ||
a2ffd046 | 152 | private loadAndSetFromLocalStorage () { |
a4ff3100 | 153 | const lastActiveThemeString = this.localStorageService.getItem(UserLocalStorageKeys.LAST_ACTIVE_THEME) |
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154 | if (!lastActiveThemeString) return |
155 | ||
156 | try { | |
157 | const lastActiveTheme = JSON.parse(lastActiveThemeString) | |
158 | this.themeFromLocalStorage = lastActiveTheme | |
159 | ||
160 | this.injectThemes([ lastActiveTheme ], true) | |
161 | this.updateCurrentTheme() | |
162 | } catch (err) { | |
163 | console.error('Cannot parse last active theme.', err) | |
164 | return | |
165 | } | |
166 | } | |
167 | ||
168 | private removeThemePlugins (themeName: string) { | |
169 | const oldTheme = this.getTheme(themeName) | |
170 | if (oldTheme) { | |
171 | console.log('Removing scripts of old theme %s.', themeName) | |
172 | this.pluginService.removePlugin(oldTheme) | |
173 | } | |
174 | } | |
175 | ||
176 | private removeThemeFromLocalStorageIfNeeded (themes: ServerConfigTheme[]) { | |
177 | if (!this.themeFromLocalStorage) return | |
178 | ||
179 | const loadedTheme = themes.find(t => t.name === this.themeFromLocalStorage.name) | |
180 | if (!loadedTheme || loadedTheme.version !== this.themeFromLocalStorage.version) { | |
181 | // Need to remove this theme: we loaded an old version or a theme that does not exist anymore | |
182 | this.removeThemePlugins(this.themeFromLocalStorage.name) | |
183 | this.oldThemeName = undefined | |
184 | ||
185 | const head = this.getHeadElement() | |
186 | for (const htmlLinkElement of this.themeDOMLinksFromLocalStorage) { | |
187 | head.removeChild(htmlLinkElement) | |
188 | } | |
189 | ||
190 | this.themeFromLocalStorage = undefined | |
191 | this.themeDOMLinksFromLocalStorage = [] | |
192 | } | |
193 | } | |
194 | ||
195 | private getHeadElement () { | |
196 | return document.getElementsByTagName('head')[0] | |
197 | } | |
198 | ||
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199 | private getTheme (name: string) { |
200 | return this.themes.find(t => t.name === name) | |
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201 | } |
202 | } |