package loger

import (
	"encoding/json"
	"fmt"
	"github.com/sirupsen/logrus"
	"io"
	"os"
	"reflect"
	"runtime"
	"strings"
	"time"
)

// ANSI 转义码定义颜色
const (
	reset        = "\033[0m"
	red          = "\033[31m"
	green        = "\033[32m"
	yellow       = "\033[33m"
	blue         = "\033[34m"
	magenta      = "\033[35m"
	cyan         = "\033[36m"
	white        = "\033[97m"
	gray         = "\033[90m"
	brightYellow = "\033[93m"
)

// 自定义日志格式化器
type customFormatter struct{}

// Format 实现 logrus.Formatter 接口
func (f *customFormatter) Format(entry *logrus.Entry) ([]byte, error) {
	// 根据日志级别选择颜色
	var levelColor string
	switch entry.Level {
	case logrus.DebugLevel:
		levelColor = cyan
	case logrus.InfoLevel:
		levelColor = green
	case logrus.WarnLevel:
		levelColor = yellow
	case logrus.ErrorLevel:
		levelColor = red
	case logrus.FatalLevel, logrus.PanicLevel:
		levelColor = magenta
	default:
		levelColor = white
	}

	// 获取时间，格式为 yyyy/mm/dd hh:mm:ss.ms
	timestamp := fmt.Sprintf("%s%s%s", levelColor, entry.Time.Format("01-02 15:04:05"), reset)

	// 获取文件名和行号
	_, file, line, ok := runtime.Caller(6) // 使用更高的层级
	if !ok {
		file = "unknown"
		line = 0
	}
	if entry.Caller != nil {
		// 获取调用者的文件名并只保留文件名部分
		file = file[strings.LastIndex(file, "/")+1:] // 仅保留文件名
	}

	// 获取日志标题
	title, ok := entry.Data["title"].(string)
	if !ok {
		title = "unknown"
	}

	// 格式化日志级别，并为其添加颜色
	level := fmt.Sprintf("%s[%s]%s", levelColor, strings.ToUpper(entry.Level.String()), reset)
	title = fmt.Sprintf("%s「%s」%s", levelColor, title, reset)

	// 格式化输出内容
	logMessage := fmt.Sprintf("%s %s:%d: %s >> %s %s\n",
		timestamp,
		file,
		line,
		level,
		title,
		entry.Message,
	)

	return []byte(logMessage), nil
}

func getLog() *logrus.Logger {
	logLevel := os.Getenv("LOG_LEVEL")
	logSave := os.Getenv("LOG_SAVE")
	logSaveDir := os.Getenv("LOG_SAVE_PATH")
	log := logrus.New()
	switch logLevel {
	case "debug":
		log.SetLevel(logrus.DebugLevel)
	case "info":
		log.SetLevel(logrus.InfoLevel)
	case "warn":
		log.SetLevel(logrus.WarnLevel)
	case "error":
		log.SetLevel(logrus.ErrorLevel)
	case "fatal":
		log.SetLevel(logrus.FatalLevel)
	}
	// 自定义日志格式
	log.SetFormatter(&customFormatter{})
	// 启用调用信息的追踪，这样可以获取到文件名和行号
	log.SetReportCaller(true)

	if logSave == "true" {
		logFileName := time.Now().Format("20060102") + ".log"
		logSavePath := logSaveDir + "/" + logFileName
		// 判断日志文件是否已存在
		_, err := os.Stat(logSaveDir)
		if os.IsNotExist(err) {
			// 路径不存在，创建目录
			if err := os.MkdirAll(logSaveDir, 0755); err != nil {
				log.Error("日志文件目录创建失败")
				return log
			}
		}
		logFile, _ := os.OpenFile(logSavePath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
		multiWriter := io.MultiWriter(os.Stdout, logFile)
		log.SetOutput(multiWriter)
	}
	return log
}

func toString(v interface{}) string {
	// 使用反射检查类型
	rv := reflect.ValueOf(v)

	// 处理结构体和结构体指针
	if rv.Kind() == reflect.Struct || (rv.Kind() == reflect.Ptr && rv.Elem().Kind() == reflect.Struct) {
		jsonData, err := json.Marshal(v)
		if err != nil {
			return fmt.Sprintf("Error marshalling to JSON: %v", err)
		}
		return string(jsonData)
	}

	// 对于其他类型，使用 fmt.Sprintf
	return fmt.Sprintf("%v", v)
}

// isPrintable 检查字符串是否只包含可打印字符
func isPrintable(s string) bool {
	for _, r := range s {
		if r < 32 || r > 126 {
			return false
		}
	}
	return true
}

// joinToString 将多个参数转换为字符串，并拼接在一起。
func joinToString(parts ...interface{}) string {
	var strParts []string
	for _, part := range parts {
		strParts = append(strParts, toString(part))
	}
	return strings.Join(strParts, "")
}

func Debug(title string, content ...interface{}) {
	getLog().WithFields(logrus.Fields{
		"title": title,
	}).Debug(joinToString(content))
}

func Info(title string, content ...interface{}) {
	getLog().WithFields(logrus.Fields{
		"title": title,
	}).Info(joinToString(content))
}

func Warn(title string, content ...interface{}) {
	getLog().WithFields(logrus.Fields{
		"title": title,
	}).Warn(joinToString(content))
}

func Error(title string, content ...interface{}) {
	getLog().WithFields(logrus.Fields{
		"title": title,
	}).Error(joinToString(content))
}

func Fatal(title string, content ...interface{}) {
	getLog().WithFields(logrus.Fields{
		"title": title,
	}).Fatal(joinToString(content))
}