/*
 * @Descripttion:
 * @version:
 * @Author: Neo,Huang
 * @Date: 2020-10-20 14:01:47
 * @LastEditors: Please set LastEditors
 * @LastEditTime: 2021-04-19 15:09:30
 */
package utils

import (
	"bytes"
	"crypto/aes"
	"crypto/cipher"
	"encoding/hex"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"net/url"
	"os"
	"sort"
	"strconv"
	"strings"
	"time"

	"github.com/astaxie/beego"
	"github.com/astaxie/beego/config"
	"github.com/bitly/go-simplejson"
)

// StringToInt string to int
func StringToInt(itf interface{}) int {
	str, _ := itf.(string)
	i, _ := strconv.Atoi(str)
	return i
}

// IntToString int to string
func IntToString(number int) string {
	return strconv.Itoa(number)
}

// StringToInt64 string to int64
func StringToInt64(itf interface{}) int64 {
	str, _ := itf.(string)
	i, _ := strconv.ParseInt(str, 10, 64)
	return i
}

// Int64ToString int64 to string
func Int64ToString(number int64) string {
	return strconv.FormatInt(number, 10)
}

func JsonNumberToInt(itf interface{}) int {
	str := itf.(json.Number).String()

	return StringToInt(str)
}

// GetConf config
func GetConf(key string, file string) string {
	iniconf, err := config.NewConfig("ini", file)
	if err != nil {
		fmt.Println(err.Error())
	}
	return iniconf.String(key)
}

// ResponseHTTPJSON return json
func ResponseHTTPJSON(w http.ResponseWriter, m map[string]interface{}) {
	str, _ := json.Marshal(m)
	w.Header().Set("Content-Length", IntToString(len(str)))
	w.Header().Set("Content-Type", "text/json")
	w.Write([]byte(str))
}

// SendAndRecvHTTP send
func SendAndRecvHTTP(method string, url string, body string) ([]byte, error) {
	client := &http.Client{}
	req, err1 := http.NewRequest(method, url, strings.NewReader(body))
	if err1 != nil {
		return nil, err1
	}
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Content-Length", IntToString(len(body)))
	req.Header.Set("Connection", "close")

	resp, err2 := client.Do(req)
	if err2 != nil {
		return nil, err2
	}
	defer resp.Body.Close()

	return ioutil.ReadAll(resp.Body)
}

// 日志输出
func SetEventLog(strLog string, strFile string) {
	// 创建日志文件
	filepath := fmt.Sprintf("/alidata/log/order/%s-%s.log", strFile, time.Now().Format("2006-01-02"))
	file, err := os.OpenFile(filepath, os.O_CREATE|os.O_APPEND|os.O_RDWR, 0666)
	if err != nil {
		log.Println("create log file failed! err:", err)
	}
	defer file.Close()

	//获取当前程序执行的绝对路径
	_, err = file.WriteString(strLog + "\n")
	if err != nil {
		log.Println("write string err:", err)
	}
}

// 应答 - 无签名
func ResponseUnsign(w http.ResponseWriter, m map[string]string) {
	str, _ := json.Marshal(m)

	w.Header().Set("Content-Length", IntToString(len(str)))
	w.Header().Set("Content-Type", "text/plain")
	w.Write([]byte(str))
}

// http请求 - json参数
func RequestHttpJson(method string, url string, body string) ([]byte, error) {
	client := &http.Client{}
	req, err1 := http.NewRequest(method, url, strings.NewReader(body))
	if err1 != nil {
		return nil, err1
	}
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Content-Length", IntToString(len(body)))
	req.Header.Set("Connection", "close")

	resp, err2 := client.Do(req)
	if err2 != nil {
		return nil, err2
	}
	defer resp.Body.Close()

	return ioutil.ReadAll(resp.Body)
}

// http请求 - url加密参数
func RequestHttpEncoded(method string, url string, body string) ([]byte, error) {
	client := &http.Client{}
	req, err1 := http.NewRequest(method, url, strings.NewReader(body))
	if err1 != nil {
		return nil, err1
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req.Header.Set("Content-Length", IntToString(len(body)))
	req.Header.Set("Connection", "close")

	resp, err2 := client.Do(req)
	if err2 != nil {
		return nil, err2
	}
	defer resp.Body.Close()

	return ioutil.ReadAll(resp.Body)
}

// 序列化url参数
func UrlSerial(values url.Values) (r string) {
	keys := make([]string, 0, len(values))
	for k := range values {
		keys = append(keys, k)
	}
	sort.Strings(keys)
	for _, v := range keys {
		if r != "" {
			r += "&"
		}
		r += v + "=" + values.Get(v)
	}
	return
}

// 获取游戏密钥
func GetGameKey() string {
	configFile := GetConfigFile()
	gameKey := GetConf("servers::gameKey", configFile)
	return gameKey
}

// 获取游戏服地址
func GetGameHost() string {
	configFile := GetConfigFile()
	host := GetConf("servers::game", configFile)
	return host
}

// 获取趣头条参数
func GetQttConf(channel string, key string) string {
	configFile := GetConfigFile()
	host := GetConf(fmt.Sprintf("qttgame%s::%s", channel, key), configFile)
	return host
}

// 获取配置参数
func GetKeyConf(key string, subKey string) string {
	configFile := GetConfigFile()
	host := GetConf(fmt.Sprintf("%s::%s", key, subKey), configFile)
	return host
}

// 项目
var project string

func InitProject() {
	project = beego.AppConfig.String("project")
}
func GetProject() string {
	return project
}

// 配置文件
func GetConfigFile() string {
	project := GetProject()
	configFile := fmt.Sprintf("conf/%s/cfg.conf", project)
	if beego.AppConfig.String("runmode") == "test" {
		configFile = fmt.Sprintf("conf/%s/cfg_test.conf", project)
	}

	return configFile
}

// 获取配置文件目录
func GetConfigPath() string {
	project := GetProject()
	return fmt.Sprintf("conf/%s/", project)
}

func pKCS5Padding(ciphertext []byte, blockSize int) []byte {
	padding := blockSize - len(ciphertext)%blockSize
	padtext := bytes.Repeat([]byte{byte(padding)}, padding)
	return append(ciphertext, padtext...)
}

func pKCS5UnPadding(origData []byte) []byte {
	length := len(origData)
	// 去掉最后一个字节 unpadding 次
	unpadding := int(origData[length-1])
	return origData[:(length - unpadding)]
}

// AesEncrypt aes加密函数，返回加密后的结果长度是16的倍数
func AesEncrypt(origData, key []byte) ([]byte, error) {
	block, err := aes.NewCipher(key)
	if err != nil {
		return nil, err
	}
	blockSize := block.BlockSize()
	origData = pKCS5Padding(origData, blockSize)

	// iv := make([]byte, aes.BlockSize)
	iv := []byte("0304050607080910")
	blockMode := cipher.NewCBCEncrypter(block, iv)
	crypted := make([]byte, len(origData))
	blockMode.CryptBlocks(crypted, origData)
	return crypted, nil
}

// AesDecrypt aes解密函数，传入解密内容长度必须是16的倍数
func AesDecrypt(crypted, key []byte) ([]byte, error) {
	block, err := aes.NewCipher(key)
	if err != nil {
		return nil, err
	}
	// iv := make([]byte, aes.BlockSize)
	iv := []byte("0304050607080910")
	blockMode := cipher.NewCBCDecrypter(block, iv)
	origData := make([]byte, len(crypted))
	blockMode.CryptBlocks(origData, crypted)
	origData = pKCS5UnPadding(origData)
	return origData, nil
}

func EncodeData(ts string, data string, appKey string) string {
	key := Md5(appKey + ts)
	en, err := AesEncrypt([]byte(data), []byte(key))
	if err != nil {
		return ""
	}
	return strings.ToUpper(hex.EncodeToString(en))
}

func DecodeData(ts string, data string) (string, error) {
	l := len(data)
	if l == 0 || (l%16) != 0 {
		return "", fmt.Errorf("decrype data error")
	}

	redAppKey := GetKeyConf("servers", "redAppKey")
	key := Md5(redAppKey + ts)
	buf, err1 := hex.DecodeString(data)
	if err1 != nil {
		return "", err1
	}

	de, err2 := AesDecrypt(buf, []byte(key))
	if err2 != nil {
		return "", err2
	}

	return string(de), nil
}

// 加载json配置文件
func LoadJsonFile(fileName string) *simplejson.Json {
	data, err := ioutil.ReadFile(fileName)
	if err != nil {
		fmt.Println("load readFile", fileName, "err:", err)
		return nil
	}

	j, err := simplejson.NewJson(data)
	if err != nil {
		fmt.Println("load unmarshal", fileName, "err:", err)
		return nil
	}

	return j
}