feat: file upload and download

middleware/lesson_plan_permission.go

@@ -0,0 +1,52 @@
+package middleware
+
+import (
+	"hr_receiver/models"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+func RequireHeartRateOperatorOrHigher() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		roleValue, exists := c.Get("role")
+		if !exists {
+			c.JSON(http.StatusForbidden, gin.H{"error": "missing user role"})
+			c.Abort()
+			return
+		}
+		role, ok := roleValue.(models.UserRole)
+		if !ok {
+			c.JSON(http.StatusForbidden, gin.H{"error": "invalid user role"})
+			c.Abort()
+			return
+		}
+		if role != models.UserRoleOperator &&
+			role != models.UserRoleRegionAdmin &&
+			role != models.UserRoleSuperAdmin {
+			c.JSON(http.StatusForbidden, gin.H{"error": "insufficient role permissions"})
+			c.Abort()
+			return
+		}
+
+		flavorValue, exists := c.Get("flavorType")
+		if !exists {
+			c.JSON(http.StatusForbidden, gin.H{"error": "missing user flavor"})
+			c.Abort()
+			return
+		}
+		flavorType, ok := flavorValue.(models.UserFlavorType)
+		if !ok {
+			c.JSON(http.StatusForbidden, gin.H{"error": "invalid user flavor"})
+			c.Abort()
+			return
+		}
+		if flavorType != models.UserFlavorHeartRate && flavorType != models.UserFlavorAll {
+			c.JSON(http.StatusForbidden, gin.H{"error": "insufficient flavor permissions"})
+			c.Abort()
+			return
+		}
+
+		c.Next()
+	}
+}