feat(controllers/comments.RecentCommentByPage): init

internal/controllers/comments.go

@@ -2,6 +2,7 @@ package controllers
 
 import (
 	"coursebench-backend/internal/controllers/comments"
+
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -14,6 +15,7 @@ func CommentRoutes(r fiber.Router) {
 	route.Get("/course_group/:id", comments.CourseGroupComment)
 	route.Get("/course/:id", comments.CourseComment)
 	route.Get("/recent", comments.RecentComment)
+	route.Get("/recent/:id", comments.RecentCommentByPage)
 	route.Post("/like", comments.Like)
 	route.Post("/fold", comments.Fold)
 	route.Post("/cover", comments.Cover)

internal/controllers/comments/recent_by_page.go

@@ -0,0 +1,52 @@
+package comments
+
+import (
+	"coursebench-backend/internal/middlewares/session"
+	"coursebench-backend/internal/utils"
+	"coursebench-backend/pkg/database"
+	"coursebench-backend/pkg/errors"
+	"coursebench-backend/pkg/models"
+	"strconv"
+
+	"github.com/gofiber/fiber/v2"
+)
+
+func RecentCommentByPage(c *fiber.Ctx) (err error) {
+	uid, err := session.GetUserID(c)
+	if err != nil {
+		uid = 0
+	}
+
+	id_s := c.Params("id", "1")
+	id, err := strconv.Atoi(id_s)
+	if err != nil {
+		return errors.New(errors.InvalidArgument)
+	}
+
+	db := database.GetDB()
+	var comments []models.Comment
+	result := db.Preload("User").Preload("CourseGroup").Preload("CourseGroup.Course").Preload("CourseGroup.Teachers").
+		Order("update_time DESC").Offset((id - 1) * 30).Limit(31).Find(&comments)
+	if err := result.Error; err != nil {
+		return errors.Wrap(err, errors.DatabaseError)
+	}
+	if result.RowsAffected == 31 {
+		comments = comments[:30]
+	}
+
+	var likeResult []CommentLikeResult
+	if uid != 0 {
+		db.Raw("SELECT comment_likes.comment_id, comment_likes.is_like from comments, comment_likes where comment_likes.user_id = ? and comment_likes.comment_id = comments.id and comment_likes.deleted_at is NULL and comments.deleted_at is NULL order by create_time desc OFFSET ? LIMIT 30",
+			(id-1)*30,
+			uid).Scan(&likeResult)
+	}
+	var response []CommentResponse
+	response = GenerateResponse(comments, uid, likeResult, true, utils.GetIP(c))
+	return c.Status(fiber.StatusOK).JSON(models.OKResponse{
+		Data: fiber.Map{
+			"has_more": result.RowsAffected == 31,
+			"comments": response,
+		},
+		Error: false,
+	})
+}