add global config support

gen/render.go

@@ -53,6 +53,27 @@ func RenderConfig(site string, cdb *db.ConfigDB) error {
 	return nil
 }
 
+func RenderGlobalConfig(paramsGob []byte, tmplContent []byte) ([]byte, error) {
+	// 渲染caddyfile
+	var globalConfig CaddyGlobalConfig
+	err := DecodeGobConfig(paramsGob, &globalConfig)
+	if err != nil {
+		return nil, fmt.Errorf("failed to decode global config params: %w", err)
+	}
+
+	parsedTmpl, parseErr := template.New("caddyfile").Parse(string(tmplContent))
+	if parseErr != nil {
+		return nil, fmt.Errorf("failed to parse global caddyfile template: %w", parseErr)
+	}
+
+	var renderedContentBuilder bytes.Buffer
+	if err := parsedTmpl.Execute(&renderedContentBuilder, globalConfig); err != nil {
+		return nil, fmt.Errorf("failed to render global caddyfile template: %w", err)
+	}
+
+	return renderedContentBuilder.Bytes(), nil
+}
+
 // 把caddycfg内容转为GOB
 func EncodeGobConfig(caddycfg any) ([]byte, error) {
 	var buf bytes.Buffer