feat(tester): extend ListContests endpoint

internal/models/contest.go

@@ -8,3 +8,10 @@ type Contest struct {
 	CreatedAt *time.Time `db:"created_at"`
 	UpdatedAt *time.Time `db:"updated_at"`
 }
+
+type ContestsListItem struct {
+	Id        int32     `db:"id"`
+	Title     string    `db:"title"`
+	CreatedAt time.Time `db:"created_at"`
+	UpdatedAt time.Time `db:"updated_at"`
+}

internal/tester/delivery.go

@@ -6,7 +6,7 @@ import (
 )
 
 type Handlers interface {
-	ListContests(c *fiber.Ctx) error
+	ListContests(c *fiber.Ctx, params testerv1.ListContestsParams) error
 	CreateContest(c *fiber.Ctx) error
 	DeleteContest(c *fiber.Ctx, id int32) error
 	GetContest(c *fiber.Ctx, id int32) error

internal/tester/delivery/rest/handlers.go

@@ -19,8 +19,33 @@ func NewTesterHandlers(problemsUC tester.ProblemUseCase, contestsUC tester.Conte
 	}
 }
 
-func (h *TesterHandlers) ListContests(c *fiber.Ctx) error {
+func (h *TesterHandlers) ListContests(c *fiber.Ctx, params testerv1.ListContestsParams) error {
-	return c.SendStatus(fiber.StatusNotImplemented)
+	contests, count, err := h.contestsUC.ListContests(c.Context(), params.Page, params.PageSize)
+	if err != nil {
+		return c.SendStatus(pkg.ToREST(err))
+	}
+
+	resp := testerv1.ListContestsResponse{
+		Contests: make([]testerv1.ContestsListItem, len(contests)),
+		Page:     params.Page,
+		MaxPage: func() int32 {
+			if count%params.PageSize == 0 {
+				return count / params.PageSize
+			}
+			return count/params.PageSize + 1
+		}(),
+	}
+
+	for i, contest := range contests {
+		resp.Contests[i] = testerv1.ContestsListItem{
+			Id:        contest.Id,
+			Title:     contest.Title,
+			CreatedAt: contest.CreatedAt,
+			UpdatedAt: contest.UpdatedAt,
+		}
+	}
+
+	return c.JSON(resp)
 }
 
 func (h *TesterHandlers) ListProblems(c *fiber.Ctx, params testerv1.ListProblemsParams) error {

internal/tester/pg_repository.go

@@ -21,4 +21,5 @@ type ContestRepository interface {
 	AddParticipant(ctx context.Context, contestId int32, userId int32) (int32, error)
 	DeleteParticipant(ctx context.Context, participantId int32) error
 	ReadRichTasks(ctx context.Context, contestId int32) ([]*models.RichTask, error)
+	ListContests(ctx context.Context, page int32, pageSize int32) ([]*models.ContestsListItem, int32, error)
 }

internal/tester/repository/pg_contests_repository.go

@@ -158,3 +158,27 @@ func (r *ContestRepository) ReadRichTasks(ctx context.Context, contestId int32)
 	}
 	return tasks, nil
 }
+
+const (
+	readContestsListQuery = `SELECT id, title, created_at, updated_at FROM contests LIMIT ? OFFSET ?`
+	countContestsQuery    = "SELECT COUNT(*) FROM contests"
+)
+
+func (r *ContestRepository) ListContests(ctx context.Context, page int32, pageSize int32) ([]*models.ContestsListItem, int32, error) {
+	const op = "ContestRepository.ReadTasks"
+
+	var tasks []*models.ContestsListItem
+	query := r.db.Rebind(readContestsListQuery)
+	err := r.db.SelectContext(ctx, &tasks, query, pageSize, (page-1)*pageSize)
+	if err != nil {
+		return nil, 0, handlePgErr(err, op)
+	}
+
+	var count int32
+	err = r.db.GetContext(ctx, &count, countContestsQuery)
+	if err != nil {
+		return nil, 0, handlePgErr(err, op)
+	}
+
+	return tasks, count, nil
+}

internal/tester/usecase.go

@@ -21,4 +21,5 @@ type ContestUseCase interface {
 	AddParticipant(ctx context.Context, contestId int32, userId int32) (int32, error)
 	DeleteParticipant(ctx context.Context, participantId int32) error
 	ReadRichTasks(ctx context.Context, contestId int32) ([]*models.RichTask, error)
+	ListContests(ctx context.Context, page int32, pageSize int32) ([]*models.ContestsListItem, int32, error)
 }

internal/tester/usecase/contests_usecase.go

@@ -49,3 +49,7 @@ func (uc *ContestUseCase) DeleteParticipant(ctx context.Context, participantId i
 func (uc *ContestUseCase) ReadRichTasks(ctx context.Context, contestId int32) ([]*models.RichTask, error) {
 	return uc.contestRepo.ReadRichTasks(ctx, contestId)
 }
+
+func (uc *ContestUseCase) ListContests(ctx context.Context, page int32, pageSize int32) ([]*models.ContestsListItem, int32, error) {
+	return uc.contestRepo.ListContests(ctx, page, pageSize)
+}

proto

@@ -1 +1 @@
-Subproject commit 55846c7a2b06b7dcd78fc001b322bdb96a5c8bca
+Subproject commit ac0eb56bb9dee9f0933f858e16d61c9e40c89a29