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1a00c561 | 1 | import { Injectable } from '@angular/core' |
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2 | import { AuthService } from '@app/core/auth' |
3 | import { ServerService } from '@app/core/server' | |
4 | import { environment } from '../../../environments/environment' | |
5 | import { PluginService } from '@app/core/plugins/plugin.service' | |
ba430d75 | 6 | import { ServerConfig, ServerConfigTheme } from '@shared/models' |
7c93905d | 7 | import { first } from 'rxjs/operators' |
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8 | import { User } from '@app/shared/users/user.model' |
9 | import { UserService } from '@app/shared/users/user.service' | |
10 | import { LocalStorageService } from '@app/shared/misc/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 |
ba430d75 | 85 | return this.serverConfig.theme.default |
1a00c561 RK |
86 | } |
87 | ||
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88 | private loadTheme (name: string) { |
89 | const links = document.getElementsByTagName('link') | |
90 | for (let i = 0; i < links.length; i++) { | |
91 | const link = links[ i ] | |
92 | if (link.getAttribute('rel').indexOf('style') !== -1 && link.getAttribute('title')) { | |
93 | link.disabled = link.getAttribute('title') !== name | |
94 | } | |
95 | } | |
96 | } | |
97 | ||
98 | private updateCurrentTheme () { | |
a2ffd046 | 99 | if (this.oldThemeName) this.removeThemePlugins(this.oldThemeName) |
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100 | |
101 | const currentTheme = this.getCurrentTheme() | |
102 | ||
103 | console.log('Enabling %s theme.', currentTheme) | |
104 | ||
105 | this.loadTheme(currentTheme) | |
d00dc28d | 106 | |
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107 | const theme = this.getTheme(currentTheme) |
108 | if (theme) { | |
109 | console.log('Adding scripts of theme %s.', currentTheme) | |
f0c5e8b6 | 110 | this.pluginService.addPlugin(theme, true) |
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111 | |
112 | this.pluginService.reloadLoadedScopes() | |
a2ffd046 | 113 | |
d3217560 | 114 | this.localStorageService.setItem(User.KEYS.THEME, JSON.stringify(theme), false) |
a2ffd046 | 115 | } else { |
d3217560 | 116 | this.localStorageService.removeItem(User.KEYS.THEME, false) |
e3f7f600 | 117 | } |
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118 | |
119 | this.oldThemeName = currentTheme | |
120 | } | |
121 | ||
122 | private listenUserTheme () { | |
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123 | // We don't need them anymore |
124 | this.themeFromLocalStorage = undefined | |
125 | this.themeDOMLinksFromLocalStorage = [] | |
126 | ||
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127 | if (!this.auth.isLoggedIn()) { |
128 | this.updateCurrentTheme() | |
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129 | |
130 | this.localStorageService.watch([User.KEYS.THEME]).subscribe( | |
131 | () => this.updateCurrentTheme() | |
132 | ) | |
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133 | } |
134 | ||
ffb321be | 135 | this.auth.userInformationLoaded |
7c93905d | 136 | .pipe(first()) |
ffb321be | 137 | .subscribe(() => this.updateCurrentTheme()) |
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138 | } |
139 | ||
a2ffd046 | 140 | private loadAndSetFromLocalStorage () { |
d3217560 | 141 | const lastActiveThemeString = this.localStorageService.getItem(User.KEYS.THEME) |
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142 | if (!lastActiveThemeString) return |
143 | ||
144 | try { | |
145 | const lastActiveTheme = JSON.parse(lastActiveThemeString) | |
146 | this.themeFromLocalStorage = lastActiveTheme | |
147 | ||
148 | this.injectThemes([ lastActiveTheme ], true) | |
149 | this.updateCurrentTheme() | |
150 | } catch (err) { | |
151 | console.error('Cannot parse last active theme.', err) | |
152 | return | |
153 | } | |
154 | } | |
155 | ||
156 | private removeThemePlugins (themeName: string) { | |
157 | const oldTheme = this.getTheme(themeName) | |
158 | if (oldTheme) { | |
159 | console.log('Removing scripts of old theme %s.', themeName) | |
160 | this.pluginService.removePlugin(oldTheme) | |
161 | } | |
162 | } | |
163 | ||
164 | private removeThemeFromLocalStorageIfNeeded (themes: ServerConfigTheme[]) { | |
165 | if (!this.themeFromLocalStorage) return | |
166 | ||
167 | const loadedTheme = themes.find(t => t.name === this.themeFromLocalStorage.name) | |
168 | if (!loadedTheme || loadedTheme.version !== this.themeFromLocalStorage.version) { | |
169 | // Need to remove this theme: we loaded an old version or a theme that does not exist anymore | |
170 | this.removeThemePlugins(this.themeFromLocalStorage.name) | |
171 | this.oldThemeName = undefined | |
172 | ||
173 | const head = this.getHeadElement() | |
174 | for (const htmlLinkElement of this.themeDOMLinksFromLocalStorage) { | |
175 | head.removeChild(htmlLinkElement) | |
176 | } | |
177 | ||
178 | this.themeFromLocalStorage = undefined | |
179 | this.themeDOMLinksFromLocalStorage = [] | |
180 | } | |
181 | } | |
182 | ||
183 | private getHeadElement () { | |
184 | return document.getElementsByTagName('head')[0] | |
185 | } | |
186 | ||
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187 | private getTheme (name: string) { |
188 | return this.themes.find(t => t.name === name) | |
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189 | } |
190 | } |