package conf

import (
	"fmt"
	"os"
	"path"
	"strings"
	"time"

	"gitee.com/makitdone/gx"
	rotatelogs "github.com/lestrrat-go/file-rotatelogs"
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
)

type Logger struct {
	*zap.Logger
}

func (log *Logger) Infof(format string, args ...interface{}) {
	message := fmt.Sprintf(format, args...)
	log.Info(message)
}

func (log *Logger) Debugf(format string, args ...interface{}) {
	message := fmt.Sprintf(format, args...)
	log.Debug(message)
}

func (log *Logger) Warnf(format string, args ...interface{}) {
	message := fmt.Sprintf(format, args...)
	log.Warn(message)
}

func (log *Logger) Errorf(format string, args ...interface{}) {
	message := fmt.Sprintf(format, args...)
	log.Error(message)
}

type ZapConfig struct {
	Level         string `mapstructure:"level" json:"level" yaml:"level"`                            // 级别
	Prefix        string `mapstructure:"prefix" json:"prefix" yaml:"prefix"`                         // 日志前缀
	Format        string `mapstructure:"format" json:"format" yaml:"format"`                         // 输出
	Directory     string `mapstructure:"directory" json:"directory"  yaml:"directory"`               // 日志文件夹
	EncodeLevel   string `mapstructure:"encode-level" json:"encode-level" yaml:"encode-level"`       // 编码级
	StacktraceKey string `mapstructure:"stacktrace-key" json:"stacktrace-key" yaml:"stacktrace-key"` // 栈名

	MaxAge       int  `mapstructure:"max-age" json:"max-age" yaml:"max-age"`                      // 日志留存时间
	ShowLine     bool `mapstructure:"show-line" json:"show-line" yaml:"show-line"`                // 显示行
	LogInConsole bool `mapstructure:"log-in-console" json:"log-in-console" yaml:"log-in-console"` // 输出控制台                    //
}

// ZapEncodeLevel 根据 EncodeLevel 返回 zapcore.LevelEncoder
// Author [SliverHorn](https://github.com/SliverHorn)
func (z *ZapConfig) ZapEncodeLevel() zapcore.LevelEncoder {
	switch {
	case z.EncodeLevel == "LowercaseLevelEncoder": // 小写编码器(默认)
		return zapcore.LowercaseLevelEncoder
	case z.EncodeLevel == "LowercaseColorLevelEncoder": // 小写编码器带颜色
		return zapcore.LowercaseColorLevelEncoder
	case z.EncodeLevel == "CapitalLevelEncoder": // 大写编码器
		return zapcore.CapitalLevelEncoder
	case z.EncodeLevel == "CapitalColorLevelEncoder": // 大写编码器带颜色
		return zapcore.CapitalColorLevelEncoder
	default:
		return zapcore.LowercaseLevelEncoder
	}
}

// TransportLevel 根据字符串转化为 zapcore.Level
// Author [SliverHorn](https://github.com/SliverHorn)
func (z *ZapConfig) TransportLevel() zapcore.Level {
	z.Level = strings.ToLower(z.Level)
	switch z.Level {
	case "debug":
		return zapcore.DebugLevel
	case "info":
		return zapcore.InfoLevel
	case "warn":
		return zapcore.WarnLevel
	case "error":
		return zapcore.WarnLevel
	case "dpanic":
		return zapcore.DPanicLevel
	case "panic":
		return zapcore.PanicLevel
	case "fatal":
		return zapcore.FatalLevel
	default:
		return zapcore.DebugLevel
	}
}

func (z *ZapConfig) Init() *Logger {
	gx.Path(z.Directory).Mkdir(0)
	cores := z.GetCores()
	logger := zap.New(zapcore.NewTee(cores...))
	if z.ShowLine {
		logger = logger.WithOptions(zap.AddCaller())
	}
	return &Logger{Logger: logger}
}

func (z *ZapConfig) GetCores() []zapcore.Core {
	cores := make([]zapcore.Core, 0, 7)
	for level := z.TransportLevel(); level <= zapcore.FatalLevel; level++ {
		cores = append(cores, z.GetEncoderCore(level, GetLevelPriority(level)))
	}
	return cores
}

func (z *ZapConfig) GetWriteSyncer(level string) (zapcore.WriteSyncer, error) {
	fileWriter, err := rotatelogs.New(
		path.Join(z.Directory, "%Y-%m-%d", level+".log"),
		rotatelogs.WithClock(rotatelogs.Local),
		rotatelogs.WithMaxAge(time.Duration(z.MaxAge)*24*time.Hour), // 日志留存时间
		rotatelogs.WithRotationTime(time.Hour*24),
	)
	if z.LogInConsole {
		return zapcore.NewMultiWriteSyncer(zapcore.AddSync(os.Stdout), zapcore.AddSync(fileWriter)), err
	}
	return zapcore.AddSync(fileWriter), err
}

func (z *ZapConfig) GetEncoder() zapcore.Encoder {
	if z.Format == "json" {
		return zapcore.NewJSONEncoder(z.GetEncoderConfig())
	}
	return zapcore.NewConsoleEncoder(z.GetEncoderConfig())
}

func (z *ZapConfig) GetEncoderConfig() zapcore.EncoderConfig {
	return zapcore.EncoderConfig{
		MessageKey:     "message",
		LevelKey:       "level",
		TimeKey:        "time",
		NameKey:        "logger",
		CallerKey:      "caller",
		StacktraceKey:  z.StacktraceKey,
		LineEnding:     zapcore.DefaultLineEnding,
		EncodeLevel:    z.ZapEncodeLevel(),
		EncodeTime:     z.CustomTimeEncoder,
		EncodeDuration: zapcore.SecondsDurationEncoder,
		EncodeCaller:   zapcore.FullCallerEncoder,
	}
}

func (z *ZapConfig) GetEncoderCore(l zapcore.Level, level zap.LevelEnablerFunc) zapcore.Core {
	writer, err := z.GetWriteSyncer(l.String()) // 使用file-rotatelogs进行日志分割
	if err != nil {
		fmt.Printf("Get Write Syncer Failed err:%v", err.Error())
		return nil
	}

	return zapcore.NewCore(z.GetEncoder(), writer, level)
}

func (z *ZapConfig) CustomTimeEncoder(t time.Time, encoder zapcore.PrimitiveArrayEncoder) {
	encoder.AppendString(z.Prefix + t.Format("2006/01/02 - 15:04:05.000"))
}

// GetLevelPriority 根据 zapcore.Level 获取 zap.LevelEnablerFunc
// Author [SliverHorn](https://github.com/SliverHorn)
func GetLevelPriority(level zapcore.Level) zap.LevelEnablerFunc {
	switch level {
	case zapcore.DebugLevel:
		return func(level zapcore.Level) bool { // 调试级别
			return level == zap.DebugLevel
		}
	case zapcore.InfoLevel:
		return func(level zapcore.Level) bool { // 日志级别
			return level == zap.InfoLevel
		}
	case zapcore.WarnLevel:
		return func(level zapcore.Level) bool { // 警告级别
			return level == zap.WarnLevel
		}
	case zapcore.ErrorLevel:
		return func(level zapcore.Level) bool { // 错误级别
			return level == zap.ErrorLevel
		}
	case zapcore.DPanicLevel:
		return func(level zapcore.Level) bool { // dpanic级别
			return level == zap.DPanicLevel
		}
	case zapcore.PanicLevel:
		return func(level zapcore.Level) bool { // panic级别
			return level == zap.PanicLevel
		}
	case zapcore.FatalLevel:
		return func(level zapcore.Level) bool { // 终止级别
			return level == zap.FatalLevel
		}
	default:
		return func(level zapcore.Level) bool { // 调试级别
			return level == zap.DebugLevel
		}
	}
}