package subsonic

import (
	"encoding/json"
	"encoding/xml"
	"fmt"
	"net/http"
)

func sendJSON(w http.ResponseWriter, data any, status int) error {
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(status)
	return json.NewEncoder(w).Encode(data)
}

func sendXML(w http.ResponseWriter, data any, status int) error {
	w.Header().Set("Content-Type", "application/xml")
	w.WriteHeader(status)
	return xml.NewEncoder(w).Encode(data)
}

func SendHTTPResponse(w http.ResponseWriter, r *http.Request, data any, status int) error {
	format := r.URL.Query().Get("f")
	if format == "" {
		format = "json"
	}

	resp := struct {
		SubsonicResponse any `xml:"subsonic-response" json:"subsonic-response"`
	}{
		SubsonicResponse: data,
	}

	switch format {
	case "xml":
		return sendXML(w, data, status)
	case "json":
		return sendJSON(w, resp, status)
	case "jsonp":
		return sendJSON(w, resp, status)
	}

	return fmt.Errorf("invalid format")
}