Implement structured logging and enhance middleware with context-aware logging

internal/middleware/logging.go

@@ -1,9 +1,11 @@
 package middleware
 
 import (
-	"log"
+	"log/slog"
 	"net/http"
 	"time"
+
+	"git.coopcloud.tech/wiki-cafe/member-console/internal/logging"
 )
 
 type wrappedWriter struct {
@@ -16,21 +18,48 @@ func (w *wrappedWriter) WriteHeader(statusCode int) {
 	w.statusCode = statusCode
 }
 
-// Logging is a middleware function that logs the request method, URL path, and status code
+// Logging is a middleware function that logs requests with structured logging
 func Logging(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		start := time.Now()
 
+		// Prepare wrapped writer to capture status code
 		wrapped := &wrappedWriter{
 			ResponseWriter: w,
 			statusCode:     http.StatusOK,
 		}
 
-		// Get request ID from header (set by RequestID middleware)
-		requestID := r.Header.Get(RequestIDHeader)
-		
+		// Get request ID from context
+		requestID := GetRequestID(r.Context())
+
+		// Get logger from the application and add request information
+		logger := logging.FromContext(r.Context())
+		reqLogger := logging.WithValues(logger,
+			slog.String("request_id", requestID),
+			slog.String("method", r.Method),
+			slog.String("path", r.URL.Path),
+			slog.String("remote_ip", r.RemoteAddr),
+			slog.String("user_agent", r.UserAgent()),
+		)
+
+		// Store the request-specific logger in context
+		ctx := logging.WithContext(r.Context(), reqLogger)
+		r = r.WithContext(ctx)
+
+		// Log request start if in debug mode
+		reqLogger.Debug("request started")
+
+		// Process the request with updated context
 		next.ServeHTTP(wrapped, r)
 
-		log.Printf("[%s] %d %s %s %v", requestID, wrapped.statusCode, r.Method, r.URL.Path, time.Since(start))
+		// Calculate duration
+		duration := time.Since(start)
+
+		// Log request completion with status and duration
+		reqLogger.Info("request completed",
+			slog.Int("status", wrapped.statusCode),
+			slog.Duration("duration", duration),
+			slog.String("duration_human", duration.String()),
+		)
 	})
-}
+}