Phase 2 completed: Stream Server Auth, Database and Business API

internal/api/middleware.go

@@ -0,0 +1,42 @@
+package api
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+
+	"hightube/internal/utils"
+)
+
+// AuthMiddleware intercepts requests, validates JWT, and injects user_id into context
+func AuthMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "Authorization header is required"})
+			c.Abort()
+			return
+		}
+
+		parts := strings.Split(authHeader, " ")
+		if len(parts) != 2 || parts[0] != "Bearer" {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "Authorization header format must be Bearer {token}"})
+			c.Abort()
+			return
+		}
+
+		tokenStr := parts[1]
+		userIDStr, err := utils.ParseToken(tokenStr)
+		if err != nil {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid or expired token"})
+			c.Abort()
+			return
+		}
+
+		userID, _ := strconv.ParseUint(userIDStr, 10, 32)
+		c.Set("user_id", uint(userID))
+		c.Next()
+	}
+}