// Package logger...
//
// Description : logger 日志文件
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2021-01-02 5:04 下午
package logger

import (
	"git.zhangdeman.cn/zhangdeman/consts"
	"io"
	"os"
	"strings"

	"github.com/pkg/errors"

	"go.uber.org/zap"

	"go.uber.org/zap/zapcore"

	rotatelogs "github.com/lestrrat-go/file-rotatelogs"
)

// NewLogger 获取日志实例
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 5:05 下午 2021/1/2
func NewLogger(inputLoggerLevel string, splitConfig *RotateLogConfig, optionFunc ...SetLoggerOptionFunc) (*zap.Logger, error) {
	if nil == splitConfig {
		return nil, errors.New("未配置日志切割规则")
	}

	loggerLevel := zapcore.DebugLevel
	switch strings.ToUpper(inputLoggerLevel) {
	case consts.LogLevelDebug:
		loggerLevel = zapcore.DebugLevel
	case consts.LogLevelInfo:
		loggerLevel = zapcore.InfoLevel
	case consts.LogLevelWarn:
		loggerLevel = zapcore.WarnLevel
	case consts.LogLevelError:
		loggerLevel = zapcore.ErrorLevel
	case consts.LogLevelPanic:
		loggerLevel = zapcore.PanicLevel
	default:
		return nil, errors.New(inputLoggerLevel + " : input log level is not support")
	}
	o := &OptionLogger{}

	for _, f := range optionFunc {
		f(o)
	}

	if nil == o.Encoder {
		o.Encoder = GetEncoder()
	}
	loggerLevelDeal := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
		return lvl >= loggerLevel
	})
	l := &Logger{
		splitConfig: splitConfig,
		encoder:     o.Encoder,
	}
	var (
		err          error
		loggerWriter io.Writer
	)
	// 获取 日志实现
	if loggerWriter, err = l.getWriter(); nil != err {
		return nil, err
	}

	fileHandlerList := []zapcore.Core{
		zapcore.NewCore(o.Encoder, zapcore.AddSync(loggerWriter), loggerLevelDeal),
	}

	// 设置控制台输出
	if o.ConsoleOutput {
		fileHandlerList = append(fileHandlerList, zapcore.NewCore(o.Encoder, zapcore.AddSync(os.Stdout), loggerLevelDeal))
	}

	// 最后创建具体的Logger
	core := zapcore.NewTee(fileHandlerList...)

	// 需要传入 zap.AddCaller() 才会显示打日志点的文件名和行数, 跳过一行可以直接显示业务代码行号,否则显示日志包行号
	logConfList := make([]zap.Option, 0)
	if o.WithCaller {
		logConfList = append(logConfList, zap.AddCaller(), zap.AddCallerSkip(o.WithCallerSkip))
	}
	log := zap.New(core, logConfList...)
	return log, nil
}

// NewConsoleLogger 获取控制台输出的日志实例
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 8:22 下午 2021/4/17
func NewConsoleLogger(loggerLevel zapcore.Level, optionFunc ...SetLoggerOptionFunc) (*zap.Logger, error) {
	o := &OptionLogger{}

	for _, f := range optionFunc {
		f(o)
	}
	if nil == o.Encoder {
		o.Encoder = GetEncoder()
	}
	loggerLevelDeal := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
		return lvl >= loggerLevel
	})
	fileHandlerList := []zapcore.Core{
		zapcore.NewCore(o.Encoder, zapcore.AddSync(os.Stdout), loggerLevelDeal),
	}
	// 最后创建具体的Logger
	core := zapcore.NewTee(fileHandlerList...)

	// 需要传入 zap.AddCaller() 才会显示打日志点的文件名和行数, 跳过一行可以直接显示业务代码行号,否则显示日志包行号
	logConfList := make([]zap.Option, 0)
	if o.WithCaller {
		logConfList = append(logConfList, zap.AddCaller(), zap.AddCallerSkip(o.WithCallerSkip))
	}
	log := zap.New(core, logConfList...)
	return log, nil
}

type Logger struct {
	splitConfig *RotateLogConfig
	encoder     zapcore.Encoder
}

// getWriter 获取日志实例
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 5:08 下午 2021/1/2
func (l *Logger) getWriter() (io.Writer, error) {
	option := make([]rotatelogs.Option, 0)
	option = append(option, rotatelogs.WithRotationTime(l.splitConfig.TimeInterval))
	if l.splitConfig.MaxAge > 0 {
		option = append(option, rotatelogs.WithMaxAge(l.splitConfig.MaxAge))
	}
	var (
		hook *rotatelogs.RotateLogs
		err  error
	)
	if hook, err = rotatelogs.New(l.splitConfig.FullLogFormat, option...); nil != err {
		return nil, CreateIOWriteError(err)
	}

	return hook, nil
}