package logger

import (
	"os"
	"path/filepath"
	
	"carrotskin/pkg/config"
	
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
)

// New 创建新的日志记录器
func New(cfg config.LogConfig) (*zap.Logger, error) {
	// 配置日志级别
	var level zapcore.Level
	switch cfg.Level {
	case "debug":
		level = zapcore.DebugLevel
	case "info":
		level = zapcore.InfoLevel
	case "warn":
		level = zapcore.WarnLevel
	case "error":
		level = zapcore.ErrorLevel
	default:
		level = zapcore.InfoLevel
	}

	// 配置编码器
	var encoder zapcore.Encoder
	encoderConfig := zap.NewProductionEncoderConfig()
	encoderConfig.TimeKey = "timestamp"
	encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
	encoderConfig.EncodeLevel = zapcore.CapitalLevelEncoder

	if cfg.Format == "console" {
		encoder = zapcore.NewConsoleEncoder(encoderConfig)
	} else {
		encoder = zapcore.NewJSONEncoder(encoderConfig)
	}

	// 配置输出
	var writeSyncer zapcore.WriteSyncer
	if cfg.Output == "" || cfg.Output == "stdout" {
		writeSyncer = zapcore.AddSync(os.Stdout)
	} else {
		// 自动创建日志目录
		logDir := filepath.Dir(cfg.Output)
		if err := os.MkdirAll(logDir, 0755); err != nil {
			return nil, err
		}
		
		file, err := os.OpenFile(cfg.Output, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
		if err != nil {
			return nil, err
		}
		writeSyncer = zapcore.AddSync(file)
	}

	// 创建核心
	core := zapcore.NewCore(encoder, writeSyncer, level)

	// 创建日志记录器
	logger := zap.New(core, zap.AddCaller(), zap.AddCallerSkip(1))

	return logger, nil
}