package endpoints

import (
	"bytes"
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"os"

	settings "physick.ru/culture_exam/Settings"
)

type getErr struct {
	Error string
}

func (base getErr) String() string {
	var outp, jsonErr = json.Marshal(base)
	if jsonErr != nil {
		return fmt.Sprintf("Failed to parse settings: %s", jsonErr.Error())
	}
	return string(outp)
}

func getSong(w http.ResponseWriter, r *http.Request) {
	var songName = r.URL.Query().Get("name")
	if len(songName) == 0 {
		fmt.Fprint(w, getErr { Error: "No song name provided" })
		w.WriteHeader(http.StatusBadRequest)
		return
	}
	var fullPath = fmt.Sprintf("%s/%s", settings.Current.SongsLocation, songName)
	var file, fopenErr = os.ReadFile(fullPath)
	if fopenErr != nil {
		fmt.Fprint(w, getErr { Error: fopenErr.Error()})
		w.WriteHeader(http.StatusBadRequest)
		return
	}
	w.Header().Add("Content-Type", "audio/mpeg")
	var audioChunks = bytes.NewBuffer(file)

	if _, err := audioChunks.WriteTo(w); err != nil {
		log.Println(err)
	}
}