package tools

import (
	"strings"
	"time"
	"crypto/md5"
	"strconv"
	"encoding/hex"
	"elyby/minecraft-skinsystem/lib/structures"
	"elyby/minecraft-skinsystem/lib/services"
	"encoding/json"
	"log"
)

func ParseUsername(username string) string {
	const suffix = ".png"
	if strings.HasSuffix(username, suffix) {
		username = strings.TrimSuffix(username, suffix)
	}

	return username
}

func BuildNonElyTexturesHash(username string) string {
	n := time.Now()
	hour := time.Date(n.Year(), n.Month(), n.Day(), n.Hour(), 0, 0, 0, time.UTC).Unix()
	hasher := md5.New()
	hasher.Write([]byte("non-ely-" + strconv.FormatInt(hour, 10) + "-" + username))

	return hex.EncodeToString(hasher.Sum(nil))
}

func FindRecord(username string) (structures.SkinItem, error) {
	var record structures.SkinItem;
	result, err := services.Redis.Cmd("GET", BuildKey(username)).Str();
	if (err == nil) {
		decodeErr := json.Unmarshal([]byte(result), &record)
		if (decodeErr != nil) {
			log.Println("Cannot decode record data")
		}
	}

	return record, err
}

func BuildKey(username string) string {
	return "username:" + strings.ToLower(username)
}