package main

import (
	"github.com/natefinch/lumberjack"
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
)

// Logger 是全局日志器
var logger *zap.Logger

func initLogger(filename string, maxsize int, maxbackups int, maxage int, compress bool, level string) {
	// 日志文件切割配置
	logWriter := zapcore.AddSync(&lumberjack.Logger{
		Filename:   filename,   // 日志文件位置
		MaxSize:    maxsize,    // 每个日志文件保存的最大尺寸 单位：M
		MaxBackups: maxbackups, // 日志文件最多保存多少个备份
		MaxAge:     maxage,     // 文件最多保存多少天
		Compress:   compress,   // 是否压缩
	})

	// 编码器配置
	encoderConfig := zapcore.EncoderConfig{
		TimeKey:        "time",
		LevelKey:       "level",
		NameKey:        "logger",
		CallerKey:      "caller",
		FunctionKey:    "func",
		MessageKey:     "msg",
		StacktraceKey:  "stacktrace",
		LineEnding:     zapcore.DefaultLineEnding,
		EncodeLevel:    zapcore.LowercaseLevelEncoder, // 小写编码器
		EncodeTime:     zapcore.ISO8601TimeEncoder,    // ISO8601 UTC 时间格式
		EncodeDuration: zapcore.SecondsDurationEncoder,
		EncodeCaller:   zapcore.ShortCallerEncoder, // 短路径编码器
	}

	// 设置日志级别
	// UnmarshalText unmarshals the text to an AtomicLevel. It uses the same text representations as the static
	// zapcore.Levels ("debug", "info", "warn", "error", "dpanic", "panic", and "fatal").
	atomicLevel := zap.NewAtomicLevel()
	atomicLevel.UnmarshalText([]byte(level))
	//atomicLevel.SetLevel(zap.InfoLevel)

	core := zapcore.NewCore(
		zapcore.NewJSONEncoder(encoderConfig), // 编码器配置
		logWriter,                             // 日志写入器
		atomicLevel,                           // 日志级别
	)

	// 初始化日志器
	logger = zap.New(core, zap.AddCaller(), zap.AddStacktrace(zap.ErrorLevel))
}