// Package logger provides centralized logging functionality
package logger

import (
	"strings"

	"spiderman/pkg/config"

	"github.com/sirupsen/logrus"
)

// Logger is the global logger instance
var Logger *logrus.Logger

// Init initializes the global logger with configuration
func Init(cfg *config.LogConfig) {
	Logger = logrus.New()

	// Set log level
	level := parseLogLevel(cfg.Level)
	Logger.SetLevel(level)

	// Set log format
	if strings.ToLower(cfg.Format) == "json" {
		Logger.SetFormatter(&logrus.JSONFormatter{
			TimestampFormat: "2006-01-02 15:04:05",
		})
	} else {
		Logger.SetFormatter(&logrus.TextFormatter{
			FullTimestamp:   true,
			TimestampFormat: "2006-01-02 15:04:05",
			ForceColors:     true,
		})
	}

	Logger.WithFields(logrus.Fields{
		"level":  Logger.GetLevel().String(),
		"format": cfg.Format,
	}).Info("Logger initialized")
}

// parseLogLevel converts string log level to logrus level
func parseLogLevel(levelStr string) logrus.Level {
	switch strings.ToLower(levelStr) {
	case "debug":
		return logrus.DebugLevel
	case "info":
		return logrus.InfoLevel
	case "warn", "warning":
		return logrus.WarnLevel
	case "error":
		return logrus.ErrorLevel
	case "fatal":
		return logrus.FatalLevel
	case "panic":
		return logrus.PanicLevel
	default:
		return logrus.InfoLevel
	}
}

// GetLoggerWithFields returns a logger with pre-set fields
func GetLoggerWithFields(fields logrus.Fields) *logrus.Entry {
	return Logger.WithFields(fields)
}

// GetRequestLogger returns a logger with request-specific fields
func GetRequestLogger(method, path, remoteAddr string) *logrus.Entry {
	return Logger.WithFields(logrus.Fields{
		"method":    method,
		"path":      path,
		"remote_ip": remoteAddr,
		"component": "api",
	})
}

// GetFabricLogger returns a logger with Fabric-specific fields
func GetFabricLogger() *logrus.Entry {
	return Logger.WithFields(logrus.Fields{
		"component": "fabric",
	})
}