package api

import (
	"encoding/json"
	"net/http"
	"sync"

	"jukebox_maker/internal/config"
)

var cfgMu sync.Mutex

func (s *Server) handleGetConfig(w http.ResponseWriter, r *http.Request) {
	cfgMu.Lock()
	cfg := *s.deps.Config
	cfgMu.Unlock()
	jsonOK(w, cfg)
}

func (s *Server) handlePutConfig(w http.ResponseWriter, r *http.Request) {
	var incoming config.Config
	if err := json.NewDecoder(r.Body).Decode(&incoming); err != nil {
		jsonErr(w, http.StatusBadRequest, "invalid JSON: "+err.Error())
		return
	}
	if err := incoming.Validate(); err != nil {
		jsonErr(w, http.StatusUnprocessableEntity, err.Error())
		return
	}

	cfgMu.Lock()
	*s.deps.Config = incoming
	cfgMu.Unlock()

	if err := config.Save(s.deps.ConfigPath, s.deps.Config); err != nil {
		jsonErr(w, http.StatusInternalServerError, "failed to save config: "+err.Error())
		return
	}

	jsonOK(w, incoming)
}