use themes

themes/manager.go

@@ -0,0 +1,54 @@
+package theme // Declare the package at the top
+import (
+	"fmt"
+	"html/template"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// ThemeManager manages themes for the blog system
+type ThemeManager struct {
+	CurrentTheme string                        // Name of the currently active theme
+	Templates    map[string]*template.Template // Cached compiled HTML templates
+}
+
+// LoadTheme loads a specified theme by its name
+func (tm *ThemeManager) LoadTheme(themeName string) error {
+	// 1. 读取theme.yaml验证主题有效性
+	// 2. 预编译所有HTML模板，缓存到Templates
+	// 3. 注册静态资源路由：/themes/[name]/static/*filepath
+	tm.CurrentTheme = themeName
+
+	// Step 1: Validate the theme by reading theme.yaml
+	themeConfigPath := fmt.Sprintf("h:/code/go_blog/themes/%s/theme.yaml", themeName)
+	if _, err := os.Stat(themeConfigPath); os.IsNotExist(err) {
+		return fmt.Errorf("theme %s does not exist or is invalid", themeName)
+	}
+
+	// Step 2: Precompile all HTML templates and cache them
+	tm.Templates = make(map[string]*template.Template)
+	templateDir := fmt.Sprintf("h:/code/go_blog/themes/%s/templates", themeName)
+	err := filepath.Walk(templateDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() && strings.HasSuffix(info.Name(), ".html") {
+			tmpl, err := template.ParseFiles(path)
+			if err != nil {
+				return err
+			}
+			tm.Templates[info.Name()] = tmpl
+		}
+		return nil
+	})
+	if err != nil {
+		return fmt.Errorf("failed to load templates: %v", err)
+	}
+
+	// Step 3: Register static resource routes
+	http.Handle(fmt.Sprintf("/themes/%s/static/", themeName), http.StripPrefix(fmt.Sprintf("/themes/%s/static/", themeName), http.FileServer(http.Dir(fmt.Sprintf("h:/code/go_blog/themes/%s/static", themeName)))))
+
+	return nil
+}