mirror of https://github.com/Chocobozzz/PeerTube
213 lines
6.5 KiB
TypeScript
213 lines
6.5 KiB
TypeScript
import { Injectable } from '@angular/core'
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import { logger } from '@root-helpers/logger'
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import { capitalizeFirstLetter } from '@root-helpers/string'
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import { UserLocalStorageKeys } from '@root-helpers/users'
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import { HTMLServerConfig, ServerConfigTheme } from '@peertube/peertube-models'
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import { environment } from '../../../environments/environment'
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import { AuthService } from '../auth'
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import { PluginService } from '../plugins/plugin.service'
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import { ServerService } from '../server'
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import { UserService } from '../users/user.service'
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import { LocalStorageService } from '../wrappers/storage.service'
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@Injectable()
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export class ThemeService {
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private oldThemeName: string
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private themes: ServerConfigTheme[] = []
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private themeFromLocalStorage: ServerConfigTheme
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private themeDOMLinksFromLocalStorage: HTMLLinkElement[] = []
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private serverConfig: HTMLServerConfig
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constructor (
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private auth: AuthService,
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private userService: UserService,
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private pluginService: PluginService,
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private server: ServerService,
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private localStorageService: LocalStorageService
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) {}
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initialize () {
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// Try to load from local storage first, so we don't have to wait network requests
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this.loadAndSetFromLocalStorage()
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this.serverConfig = this.server.getHTMLConfig()
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const themes = this.serverConfig.theme.registered
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this.removeThemeFromLocalStorageIfNeeded(themes)
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this.injectThemes(themes)
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this.listenUserTheme()
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}
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getDefaultThemeLabel () {
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if (this.hasDarkTheme()) {
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return $localize`Light/Orange or Dark`
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}
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return $localize`Light/Orange`
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}
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buildAvailableThemes () {
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return this.serverConfig.theme.registered
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.map(t => ({ id: t.name, label: capitalizeFirstLetter(t.name) }))
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}
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private injectThemes (themes: ServerConfigTheme[], fromLocalStorage = false) {
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this.themes = themes
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logger.info(`Injecting ${this.themes.length} themes.`)
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const head = this.getHeadElement()
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for (const theme of this.themes) {
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// Already added this theme?
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if (fromLocalStorage === false && this.themeFromLocalStorage && this.themeFromLocalStorage.name === theme.name) continue
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for (const css of theme.css) {
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const link = document.createElement('link')
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const href = environment.apiUrl + `/themes/${theme.name}/${theme.version}/css/${css}`
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link.setAttribute('href', href)
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link.setAttribute('rel', 'alternate stylesheet')
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link.setAttribute('type', 'text/css')
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link.setAttribute('title', theme.name)
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link.setAttribute('disabled', '')
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if (fromLocalStorage === true) this.themeDOMLinksFromLocalStorage.push(link)
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head.appendChild(link)
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}
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}
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}
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private getCurrentTheme () {
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if (this.themeFromLocalStorage) return this.themeFromLocalStorage.name
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const theme = this.auth.isLoggedIn()
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? this.auth.getUser().theme
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: this.userService.getAnonymousUser().theme
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if (theme !== 'instance-default') return theme
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const instanceTheme = this.serverConfig.theme.default
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if (instanceTheme !== 'default') return instanceTheme
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// Default to dark theme if available and wanted by the user
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if (this.hasDarkTheme() && window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
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return 'dark'
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}
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return instanceTheme
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}
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private loadTheme (name: string) {
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const links = document.getElementsByTagName('link')
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for (let i = 0; i < links.length; i++) {
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const link = links[i]
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if (link.getAttribute('rel').includes('style') && link.getAttribute('title')) {
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link.disabled = link.getAttribute('title') !== name
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}
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}
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}
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private updateCurrentTheme () {
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if (this.oldThemeName) this.removeThemePlugins(this.oldThemeName)
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const currentTheme = this.getCurrentTheme()
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logger.info(`Enabling ${currentTheme} theme.`)
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this.loadTheme(currentTheme)
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const theme = this.getTheme(currentTheme)
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if (theme) {
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logger.info(`Adding scripts of theme ${currentTheme}`)
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this.pluginService.addPlugin(theme, true)
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this.pluginService.reloadLoadedScopes()
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this.localStorageService.setItem(UserLocalStorageKeys.LAST_ACTIVE_THEME, JSON.stringify(theme), false)
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} else {
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this.localStorageService.removeItem(UserLocalStorageKeys.LAST_ACTIVE_THEME, false)
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}
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this.oldThemeName = currentTheme
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}
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private listenUserTheme () {
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// We don't need them anymore
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this.themeFromLocalStorage = undefined
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this.themeDOMLinksFromLocalStorage = []
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if (!this.auth.isLoggedIn()) {
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this.updateCurrentTheme()
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this.localStorageService.watch([ UserLocalStorageKeys.THEME ]).subscribe(
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() => this.updateCurrentTheme()
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)
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}
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this.auth.userInformationLoaded
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.subscribe(() => this.updateCurrentTheme())
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}
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private loadAndSetFromLocalStorage () {
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const lastActiveThemeString = this.localStorageService.getItem(UserLocalStorageKeys.LAST_ACTIVE_THEME)
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if (!lastActiveThemeString) return
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try {
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const lastActiveTheme = JSON.parse(lastActiveThemeString)
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this.themeFromLocalStorage = lastActiveTheme
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this.injectThemes([ lastActiveTheme ], true)
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this.updateCurrentTheme()
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} catch (err) {
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logger.error('Cannot parse last active theme.', err)
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return
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}
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}
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private removeThemePlugins (themeName: string) {
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const oldTheme = this.getTheme(themeName)
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if (oldTheme) {
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logger.info(`Removing scripts of old theme ${themeName}.`)
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this.pluginService.removePlugin(oldTheme)
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}
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}
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private removeThemeFromLocalStorageIfNeeded (themes: ServerConfigTheme[]) {
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if (!this.themeFromLocalStorage) return
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const loadedTheme = themes.find(t => t.name === this.themeFromLocalStorage.name)
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if (!loadedTheme || loadedTheme.version !== this.themeFromLocalStorage.version) {
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// Need to remove this theme: we loaded an old version or a theme that does not exist anymore
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this.removeThemePlugins(this.themeFromLocalStorage.name)
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this.oldThemeName = undefined
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const head = this.getHeadElement()
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for (const htmlLinkElement of this.themeDOMLinksFromLocalStorage) {
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head.removeChild(htmlLinkElement)
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}
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this.themeFromLocalStorage = undefined
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this.themeDOMLinksFromLocalStorage = []
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}
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}
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private getHeadElement () {
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return document.getElementsByTagName('head')[0]
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}
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private getTheme (name: string) {
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return this.themes.find(t => t.name === name)
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}
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private hasDarkTheme () {
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return this.serverConfig.theme.registered.some(t => t.name === 'dark')
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}
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}
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