feat: added exercises handler/service/repo

internal/domain/exercise.go

@@ -0,0 +1,41 @@
+package domain
+
+import (
+	"context"
+	"time"
+)
+
+type ExerciseRepository interface {
+	CreateExercise(ctx context.Context) (*Exercise, error)
+	DeleteExercise(ctx context.Context, id string) error
+	GetExercises(ctx context.Context, offset int, count int) ([]Exercise, error)
+	CountExercises(ctx context.Context) (int, error)
+}
+
+type Exercise struct {
+	ID         string      `json:"id"`
+	Name       string      `json:"name"`
+	Equipment  []Equipment `json:"equipment"`
+	Metric     Metric      `json:"metric"`
+	Load       Load        `json:"load"`
+	Tags       []string    `json:"tags"`
+	Notes      *string     `json:"notes"`
+	ModifiedAt time.Time   `json:"modified_at"`
+}
+
+type ExerciseService struct {
+	repo ExerciseRepository
+}
+
+func NewExerciseService(r ExerciseRepository) *ExerciseService {
+	return &ExerciseService{repo: r}
+}
+
+func (s *ExerciseService) GetExercises(ctx context.Context, page int, count int) ([]Exercise, error) {
+	offset := (page - 1) * count
+	return s.repo.GetExercises(ctx, offset, count)
+}
+
+func (s *ExerciseService) CountExercises(ctx context.Context) (int, error) {
+	return s.repo.CountExercises(ctx)
+}