go_blog/themes/parser.go

package themes // Declare the package at the top

import (
	"fmt"
	config "go_blog/config" // Adjust import path as needed
	"net/http"

	"github.com/gin-gonic/gin"
)

// RenderTemplate renders a template based on the current theme
func RenderTemplate(c *gin.Context, tmpl string, data gin.H) {
	// Get the current theme
	theme := config.GetCurrentTheme()

	// Construct the template path: "themes/default/home.html"
	tplPath := fmt.Sprintf("themes/%s/%s", theme, tmpl)

	// Render the template using html/template
	c.HTML(http.StatusOK, tplPath, data)
}

// SwitchTheme handles POST requests to switch the current theme
// SwitchTheme 处理主题切换请求（修正后）
func SwitchTheme(c *gin.Context) {
    // 从上下文中获取主题管理器（通过 main.go 的 themeMiddleware 注入）
    tm, exists := c.Get("ThemeManager")
    if !exists {
        c.JSON(http.StatusInternalServerError, gin.H{"error": "主题管理器未找到"})
        return
    }
    themeManager, ok := tm.(*themes.ThemeManager)
    if !ok {
        c.JSON(http.StatusInternalServerError, gin.H{"error": "主题管理器类型错误"})
        return
    }

    newTheme := c.PostForm("theme")
    if err := themeManager.LoadTheme(newTheme); err != nil {
        c.JSON(http.StatusInternalServerError, gin.H{"error": "加载主题失败: " + err.Error()})
        return
    }
    config.SetCurrentTheme(newTheme)  // 持久化主题配置（需确保 config 包支持）
    c.JSON(http.StatusOK, gin.H{"status": "主题切换成功"})
}