package logger

import (
	"os"

	"mengstack/internal/config"

	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
)

func New(cfg config.LogConfig) (*zap.Logger, error) {
	var level zapcore.Level
	if err := level.UnmarshalText([]byte(cfg.Level)); err != nil {
		level = zapcore.InfoLevel
	}

	encoderConfig := zap.NewProductionEncoderConfig()
	encoderConfig.TimeKey = "time"
	encoderConfig.MessageKey = "msg"
	encoderConfig.LevelKey = "level"
	encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
	encoderConfig.EncodeLevel = zapcore.LowercaseLevelEncoder

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

	core := zapcore.NewCore(encoder, zapcore.AddSync(os.Stdout), level)
	return zap.New(core, zap.AddCaller(), zap.AddStacktrace(zapcore.ErrorLevel)), nil
}