feat(controllers/reward.SetComment): init

internal/controllers/reward.go

@@ -9,4 +9,5 @@ import (
 func RewardRoutes(r fiber.Router) {
 	route := r.Group("/reward")
 	route.Get("/ranklist", reward.Ranklist)
+	route.Post("/set/:id", reward.SetComment)
 }

internal/controllers/reward/setcomment.go

@@ -0,0 +1,71 @@
+package reward
+
+import (
+	"coursebench-backend/internal/middlewares/session"
+	"coursebench-backend/pkg/database"
+	"coursebench-backend/pkg/errors"
+	"coursebench-backend/pkg/models"
+	"coursebench-backend/pkg/queries"
+	"strconv"
+
+	"github.com/gofiber/fiber/v2"
+	"gorm.io/gorm"
+)
+
+type SetCommentRequest struct {
+	Reward int `json:"reward"`
+}
+
+func SetComment(c *fiber.Ctx) error {
+	c.Accepts("application/json")
+	var request SetCommentRequest
+	if err := c.BodyParser(&request); err != nil {
+		return errors.Wrap(err, errors.InvalidArgument)
+	}
+
+	idRaw := c.Params("id", "GG")
+	id, err := strconv.Atoi(idRaw)
+	if err != nil {
+		return errors.New(errors.InvalidArgument)
+	}
+
+	uid, err := session.GetUserID(c)
+	if err != nil {
+		uid = 0
+	}
+
+	db := database.GetDB()
+	user, err := queries.GetUserByID(db, uid)
+	if err != nil {
+		return errors.Wrap(err, errors.DatabaseError)
+	}
+	if !(user.IsCommunityAdmin || user.IsAdmin) {
+		return errors.New(errors.PermissionDenied)
+	}
+
+	comment := &models.Comment{}
+	result := db.First(&comment, id)
+	if result.Error != nil {
+		return errors.Wrap(result.Error, errors.DatabaseError)
+	}
+
+	comment.User.Reward -= comment.Reward
+	comment.Reward = request.Reward
+	comment.User.Reward += comment.Reward
+
+	if err := db.Transaction(func(tx *gorm.DB) error {
+		if err := tx.Save(comment).Error; err != nil {
+			return err
+		}
+		if err := tx.Save(user).Error; err != nil {
+			return err
+		}
+		return nil
+	}); err != nil {
+		return errors.Wrap(err, errors.DatabaseError)
+	}
+
+	return c.Status(fiber.StatusOK).JSON(models.OKResponse{
+		Error: false,
+	})
+}