75 lines
1.9 KiB
Go
75 lines
1.9 KiB
Go
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// Copyright 2024 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package webtheme
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import (
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"sort"
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"strings"
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"sync"
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"code.gitea.io/gitea/modules/container"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/public"
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"code.gitea.io/gitea/modules/setting"
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)
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var (
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availableThemes []string
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availableThemesSet container.Set[string]
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themeOnce sync.Once
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)
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func initThemes() {
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availableThemes = nil
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defer func() {
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availableThemesSet = container.SetOf(availableThemes...)
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if !availableThemesSet.Contains(setting.UI.DefaultTheme) {
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setting.LogStartupProblem(1, log.ERROR, "Default theme %q is not available, please correct the '[ui].DEFAULT_THEME' setting in the config file", setting.UI.DefaultTheme)
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}
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}()
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cssFiles, err := public.AssetFS().ListFiles("/assets/css")
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if err != nil {
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log.Error("Failed to list themes: %v", err)
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availableThemes = []string{setting.UI.DefaultTheme}
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return
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}
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var foundThemes []string
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for _, name := range cssFiles {
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name, ok := strings.CutPrefix(name, "theme-")
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if !ok {
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continue
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}
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name, ok = strings.CutSuffix(name, ".css")
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if !ok {
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continue
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}
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foundThemes = append(foundThemes, name)
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}
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if len(setting.UI.Themes) > 0 {
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allowedThemes := container.SetOf(setting.UI.Themes...)
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for _, theme := range foundThemes {
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if allowedThemes.Contains(theme) {
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availableThemes = append(availableThemes, theme)
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}
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}
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} else {
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availableThemes = foundThemes
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}
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sort.Strings(availableThemes)
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if len(availableThemes) == 0 {
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setting.LogStartupProblem(1, log.ERROR, "No theme candidate in asset files, but Gitea requires there should be at least one usable theme")
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availableThemes = []string{setting.UI.DefaultTheme}
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}
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}
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func GetAvailableThemes() []string {
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themeOnce.Do(initThemes)
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return availableThemes
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}
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func IsThemeAvailable(name string) bool {
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themeOnce.Do(initThemes)
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return availableThemesSet.Contains(name)
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}
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