package master

import (
	"bdgrp_go/pbutil"
	"bdgrp_go/utils"
	"bytes"
	"compress/bzip2"
	"io"
	"os"
	"path/filepath"
	"sync"
)

var (
	cache map[string]any
	mu    sync.RWMutex
)

func GetMaster() map[string]any {
	mu.RLock()
	if cache != nil {
		mu.RUnlock()
		return cache
	}
	mu.RUnlock()
	return ReloadMaster()
}

func ReloadMaster() map[string]any {
	server := os.Getenv("SERVER")
	filePath := filepath.Join("resp", server, "suitemaster.bz2")

	fileBuffer, err := os.ReadFile(filePath)
	if err != nil {
		return cache
	}

	decrypted, err := utils.Decrypt(fileBuffer)
	if err != nil {
		return cache
	}

	decompressed, err := io.ReadAll(bzip2.NewReader(bytes.NewReader(decrypted)))
	if err != nil {
		return cache
	}

	result, err := pbutil.Decode("SuiteMasterGetResponse", decompressed)
	if err != nil {
		return cache
	}

	mu.Lock()
	cache = result
	mu.Unlock()

	return cache
}