140 lines
3.8 KiB
PHP
140 lines
3.8 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\Blog\Support;
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use App\Models\Setting;
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use Illuminate\Support\Facades\File;
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class ThemeManager
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{
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public function path(?string $theme = null): string
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{
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return config('themes.path').($theme ? '/'.$theme : '');
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}
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public function active(): string
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{
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$active = Setting::get('active_theme', config('themes.default'));
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return $this->exists($active) ? $active : config('themes.default');
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}
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public function exists(string $theme): bool
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{
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return is_dir($this->path($theme)) && File::exists($this->path($theme).'/theme.json');
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}
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public function manifest(string $theme): array
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{
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$file = $this->path($theme).'/theme.json';
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if (! File::exists($file)) {
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return [];
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}
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return json_decode(File::get($file), true) ?? [];
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}
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/**
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* 扫描主题目录，返回所有主题 manifest。
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*/
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public function all(): array
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{
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$themes = [];
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foreach (File::directories(config('themes.path')) as $dir) {
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$name = basename($dir);
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if (! File::exists($dir.'/theme.json')) {
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continue;
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}
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$manifest = $this->manifest($name);
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$themes[$name] = [
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'name' => $name,
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'title' => $manifest['title'] ?? $name,
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'version' => $manifest['version'] ?? '0.0.0',
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'description' => $manifest['description'] ?? '',
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'author' => $manifest['author'] ?? '',
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'screenshot' => $manifest['screenshot'] ?? null,
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'active' => $name === $this->active(),
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];
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}
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return $themes;
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}
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public function activate(string $theme): void
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{
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if (! $this->exists($theme)) {
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throw new \InvalidArgumentException("主题不存在: {$theme}");
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}
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Setting::set('active_theme', $theme);
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$this->prependViews();
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}
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/**
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* 把激活主题的 views 目录前置到全局视图路径。
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* 在 Provider boot 与运行时切换主题时调用。
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*/
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public function prependViews(): void
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{
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// 迁移尚未执行（migrate:fresh 首轮）时跳过 DB 查询，使用默认主题
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$active = \Illuminate\Support\Facades\Schema::hasTable('settings')
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? $this->active()
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: config('themes.default');
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$views = $this->path($active).'/views';
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if (! is_dir($views)) {
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return;
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}
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$paths = config('view.paths');
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array_unshift($paths, $views);
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config(['view.paths' => $paths]);
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app('view')->getFinder()->setPaths($paths);
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}
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/**
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* 解析主题下的一个视图名。
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* 优先使用激活主题的视图，缺失时回退到内置兜底视图（blog-default）。
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*/
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public function view(string $view): string
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{
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$active = $this->active();
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if (view()->exists("theme.{$active}.{$view}")) {
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return "theme.{$active}.{$view}";
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}
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return "blog-default::{$view}";
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}
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public function assetUrl(string $path, ?string $theme = null): string
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{
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$theme = $theme ?? $this->active();
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return url('/themes/'.$theme.'/assets/'.ltrim($path, '/'));
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}
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/**
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* 主题变量（原 sablog stylevars 的现代化替代：主题级自定义配置）。
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*/
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public function variables(?string $theme = null): array
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{
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$theme = $theme ?? $this->active();
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$vars = Setting::get('theme_vars_'.$theme, []);
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return is_array($vars) ? $vars : (json_decode((string) $vars, true) ?: []);
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}
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public function variable(string $key, mixed $default = null, ?string $theme = null): mixed
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{
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return $this->variables($theme)[$key] ?? $default;
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}
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}
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