chore: make codes the repository root

internal/logger/logger.go

@@ -0,0 +1,28 @@
+package logger
+
+import (
+	"strings"
+
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+)
+
+func New(environment, service string) (*zap.Logger, error) {
+	var cfg zap.Config
+	if strings.EqualFold(environment, "prod") || strings.EqualFold(environment, "production") {
+		cfg = zap.NewProductionConfig()
+		cfg.EncoderConfig.TimeKey = "time"
+		cfg.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
+	} else {
+		cfg = zap.NewDevelopmentConfig()
+		cfg.EncoderConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder
+	}
+	cfg.OutputPaths = []string{"stdout"}
+	cfg.ErrorOutputPaths = []string{"stderr"}
+
+	log, err := cfg.Build()
+	if err != nil {
+		return nil, err
+	}
+	return log.With(zap.String("service", service), zap.String("env", environment)), nil
+}