package middleware

import (
	"fmt"
	"time"

	"git.linuxforward.com/byom/byom-core-gateway/logger"
	"github.com/gin-gonic/gin"
	"github.com/sirupsen/logrus"
)

// RequestLogger middleware logs details about each request
func RequestLogger(log *logrus.Logger) gin.HandlerFunc {
	requestLogger := logger.NewLogger("request")
	return func(c *gin.Context) {
		// Start timer
		start := time.Now()

		// Get request ID
		requestID := c.GetString(RequestIDKey)
		if requestID == "" {
			requestID = "no-request-id"
		}

		// Add request ID to logger
		reqLogger := logger.WithRequestID(requestLogger, requestID)

		// Process request
		c.Next()

		// Calculate latency
		latency := time.Since(start)

		// Get path and status
		path := c.Request.URL.Path
		if raw := c.Request.URL.RawQuery; raw != "" {
			path = fmt.Sprintf("%s?%s", path, raw)
		}

		// Log request details
		reqLogger.WithFields(logrus.Fields{
			"method":     c.Request.Method,
			"path":       path,
			"status":     c.Writer.Status(),
			"latency_ms": float64(latency.Nanoseconds()) / 1e6,
			"client_ip":  c.ClientIP(),
			"user_agent": c.Request.UserAgent(),
		}).Info("Request processed")

		// If there was an error, log it with the error field
		if len(c.Errors) > 0 {
			reqLogger.WithField("errors", c.Errors.String()).Error("Request errors")
		}
	}
}