package corelib

import (
	"html/template"
	"net/http"
)

// noRender 是一个自定义模板函数，忽略不渲染传入的内容
func noRender(s string) template.HTML {
	return template.HTML(s)
}

func TemplateHandler(w http.ResponseWriter, data any, name string, filenames ...string) {
	// 创建一个新的基础模板，并将自定义函数注册到模板中
	baseTmpl := template.New("base").Funcs(template.FuncMap{
		"noRender": noRender,
	})

	// 添加一个简单的内容以确保基础模板不是空的
	_, err := baseTmpl.Parse(`{{define "base"}}{{end}}`)
	if err != nil {
		Logger.Errorf("Error creating base template: %v", err)
		http.Error(w, "Error executing template", http.StatusInternalServerError)
	}

	// 解析布局模板及其子模板
	_, err = baseTmpl.ParseFiles(filenames...)
	if err != nil {
		Logger.Errorf("Error parsing templates: %v", err)
		http.Error(w, "Error executing template", http.StatusInternalServerError)
	}

	// 加载所有模板文件
	tmpl, err := baseTmpl.Clone()
	if err != nil {
		Logger.Errorf("error cloning base template: %v", err)
		http.Error(w, "Error executing template", http.StatusInternalServerError)
	}
	err = tmpl.ExecuteTemplate(w, name, data)
	if err != nil {
		Logger.Errorf("Error executing template: %v", err)
		http.Error(w, "Error executing template", http.StatusInternalServerError)
	}
}