Implement Application Layer with TDD

- Add date utilities for habit scheduling logic
- Implement CreateHabitHandler with full validation
- Implement GetTodaysHabitsHandler with carry-over support
- Implement MarkHabitHandler for completing habits
- All components developed following TDD methodology
- Complete test coverage for commands and queries
This commit is contained in:
2025-11-25 23:54:49 +01:00
parent 0977d3a58b
commit 34ea1f718e
8 changed files with 1002 additions and 0 deletions
@@ -0,0 +1,92 @@
package queries
import (
"context"
"time"
"habit-tracker-api/internal/domain/repositories"
"habit-tracker-api/internal/shared/utils"
)
type TodaysHabitDTO struct {
ID string
Name string
Type string
TargetValue *float64
ScheduledDate time.Time
IsCarriedOver bool
}
type GetTodaysHabitsQuery struct {
UserID string
Timezone string
Date time.Time
}
type GetTodaysHabitsHandler struct {
habitRepo repositories.HabitRepository
entryRepo repositories.HabitEntryRepository
}
func NewGetTodaysHabitsHandler(
habitRepo repositories.HabitRepository,
entryRepo repositories.HabitEntryRepository,
) *GetTodaysHabitsHandler {
return &GetTodaysHabitsHandler{
habitRepo: habitRepo,
entryRepo: entryRepo,
}
}
func (h *GetTodaysHabitsHandler) Handle(
ctx context.Context,
query GetTodaysHabitsQuery,
) ([]TodaysHabitDTO, error) {
habits, err := h.habitRepo.FindActiveByUserID(ctx, query.UserID)
if err != nil {
return nil, err
}
var result []TodaysHabitDTO
for _, habit := range habits {
shouldAppear := utils.ShouldAppearToday(
string(habit.Frequency),
habit.SpecificDays,
habit.SpecificDates,
query.Date,
)
if !shouldAppear && !habit.CarryOver {
continue
}
entries, _ := h.entryRepo.FindByHabitIDAndDateRange(
ctx,
habit.ID,
query.Date.AddDate(0, 0, -30),
query.Date,
)
isCompleted := false
for _, entry := range entries {
if entry.ScheduledDate.Equal(query.Date) && entry.DeletedAt == nil {
isCompleted = true
break
}
}
if !isCompleted {
result = append(result, TodaysHabitDTO{
ID: habit.ID,
Name: habit.Name,
Type: string(habit.Type),
TargetValue: habit.TargetValue,
ScheduledDate: query.Date,
IsCarriedOver: !shouldAppear && habit.CarryOver,
})
}
}
return result, nil
}
@@ -0,0 +1,259 @@
package queries
import (
"context"
"testing"
"time"
"habit-tracker-api/internal/domain/entities"
"habit-tracker-api/internal/domain/value_objects"
)
type mockHabitRepo struct {
habits []*entities.Habit
}
func (m *mockHabitRepo) Create(ctx context.Context, habit *entities.Habit) error {
return nil
}
func (m *mockHabitRepo) FindByID(ctx context.Context, id string) (*entities.Habit, error) {
return nil, nil
}
func (m *mockHabitRepo) FindByUserID(ctx context.Context, userID string) ([]*entities.Habit, error) {
return nil, nil
}
func (m *mockHabitRepo) FindActiveByUserID(ctx context.Context, userID string) ([]*entities.Habit, error) {
return m.habits, nil
}
func (m *mockHabitRepo) Update(ctx context.Context, habit *entities.Habit) error {
return nil
}
func (m *mockHabitRepo) Delete(ctx context.Context, id string) error {
return nil
}
type mockEntryRepo struct {
entries []*entities.HabitEntry
}
func (m *mockEntryRepo) Create(ctx context.Context, entry *entities.HabitEntry) error {
return nil
}
func (m *mockEntryRepo) FindByID(ctx context.Context, id string) (*entities.HabitEntry, error) {
return nil, nil
}
func (m *mockEntryRepo) FindByHabitID(ctx context.Context, habitID string) ([]*entities.HabitEntry, error) {
return nil, nil
}
func (m *mockEntryRepo) FindByHabitIDAndDateRange(ctx context.Context, habitID string, from, to time.Time) ([]*entities.HabitEntry, error) {
var result []*entities.HabitEntry
for _, e := range m.entries {
if e.HabitID == habitID {
result = append(result, e)
}
}
return result, nil
}
func (m *mockEntryRepo) FindPendingByHabitID(ctx context.Context, habitID string, beforeDate time.Time) ([]*entities.HabitEntry, error) {
return nil, nil
}
func (m *mockEntryRepo) Update(ctx context.Context, entry *entities.HabitEntry) error {
return nil
}
func (m *mockEntryRepo) Delete(ctx context.Context, id string) error {
return nil
}
func TestGetTodaysHabitsHandler_DailyHabitNoEntries(t *testing.T) {
habit := entities.NewHabit("user-123", "Exercise", value_objects.HabitTypeBoolean, value_objects.FrequencyDaily, false)
habit.ID = "habit-1"
habitRepo := &mockHabitRepo{habits: []*entities.Habit{habit}}
entryRepo := &mockEntryRepo{entries: []*entities.HabitEntry{}}
handler := NewGetTodaysHabitsHandler(habitRepo, entryRepo)
query := GetTodaysHabitsQuery{
UserID: "user-123",
Timezone: "UTC",
Date: time.Date(2025, 1, 15, 0, 0, 0, 0, time.UTC),
}
results, err := handler.Handle(context.Background(), query)
if err != nil {
t.Fatalf("Expected no error, got %v", err)
}
if len(results) != 1 {
t.Fatalf("Expected 1 habit, got %d", len(results))
}
if results[0].ID != "habit-1" {
t.Errorf("Expected habit ID habit-1, got %s", results[0].ID)
}
if results[0].IsCarriedOver {
t.Error("Expected IsCarriedOver to be false")
}
}
func TestGetTodaysHabitsHandler_DailyHabitAlreadyCompleted(t *testing.T) {
habit := entities.NewHabit("user-123", "Exercise", value_objects.HabitTypeBoolean, value_objects.FrequencyDaily, false)
habit.ID = "habit-1"
targetDate := time.Date(2025, 1, 15, 0, 0, 0, 0, time.UTC)
entry := entities.NewHabitEntry("habit-1", targetDate, nil)
habitRepo := &mockHabitRepo{habits: []*entities.Habit{habit}}
entryRepo := &mockEntryRepo{entries: []*entities.HabitEntry{entry}}
handler := NewGetTodaysHabitsHandler(habitRepo, entryRepo)
query := GetTodaysHabitsQuery{
UserID: "user-123",
Timezone: "UTC",
Date: targetDate,
}
results, err := handler.Handle(context.Background(), query)
if err != nil {
t.Fatalf("Expected no error, got %v", err)
}
if len(results) != 0 {
t.Fatalf("Expected 0 habits (already completed), got %d", len(results))
}
}
func TestGetTodaysHabitsHandler_WeeklyHabitOnCorrectDay(t *testing.T) {
habit := entities.NewHabit("user-123", "Gym", value_objects.HabitTypeBoolean, value_objects.FrequencyWeekly, false)
habit.ID = "habit-1"
habit.SpecificDays = []int{1, 3, 5}
monday := time.Date(2025, 1, 6, 0, 0, 0, 0, time.UTC)
habitRepo := &mockHabitRepo{habits: []*entities.Habit{habit}}
entryRepo := &mockEntryRepo{entries: []*entities.HabitEntry{}}
handler := NewGetTodaysHabitsHandler(habitRepo, entryRepo)
query := GetTodaysHabitsQuery{
UserID: "user-123",
Timezone: "UTC",
Date: monday,
}
results, err := handler.Handle(context.Background(), query)
if err != nil {
t.Fatalf("Expected no error, got %v", err)
}
if len(results) != 1 {
t.Fatalf("Expected 1 habit, got %d", len(results))
}
}
func TestGetTodaysHabitsHandler_WeeklyHabitOnWrongDay(t *testing.T) {
habit := entities.NewHabit("user-123", "Gym", value_objects.HabitTypeBoolean, value_objects.FrequencyWeekly, false)
habit.ID = "habit-1"
habit.SpecificDays = []int{1, 3, 5}
tuesday := time.Date(2025, 1, 7, 0, 0, 0, 0, time.UTC)
habitRepo := &mockHabitRepo{habits: []*entities.Habit{habit}}
entryRepo := &mockEntryRepo{entries: []*entities.HabitEntry{}}
handler := NewGetTodaysHabitsHandler(habitRepo, entryRepo)
query := GetTodaysHabitsQuery{
UserID: "user-123",
Timezone: "UTC",
Date: tuesday,
}
results, err := handler.Handle(context.Background(), query)
if err != nil {
t.Fatalf("Expected no error, got %v", err)
}
if len(results) != 0 {
t.Fatalf("Expected 0 habits (wrong day), got %d", len(results))
}
}
func TestGetTodaysHabitsHandler_CarryOverEnabled(t *testing.T) {
habit := entities.NewHabit("user-123", "Gym", value_objects.HabitTypeBoolean, value_objects.FrequencyWeekly, true)
habit.ID = "habit-1"
habit.SpecificDays = []int{1}
tuesday := time.Date(2025, 1, 7, 0, 0, 0, 0, time.UTC)
habitRepo := &mockHabitRepo{habits: []*entities.Habit{habit}}
entryRepo := &mockEntryRepo{entries: []*entities.HabitEntry{}}
handler := NewGetTodaysHabitsHandler(habitRepo, entryRepo)
query := GetTodaysHabitsQuery{
UserID: "user-123",
Timezone: "UTC",
Date: tuesday,
}
results, err := handler.Handle(context.Background(), query)
if err != nil {
t.Fatalf("Expected no error, got %v", err)
}
if len(results) != 1 {
t.Fatalf("Expected 1 habit (carry-over), got %d", len(results))
}
if !results[0].IsCarriedOver {
t.Error("Expected IsCarriedOver to be true")
}
}
func TestGetTodaysHabitsHandler_CarryOverDisabled(t *testing.T) {
habit := entities.NewHabit("user-123", "Gym", value_objects.HabitTypeBoolean, value_objects.FrequencyWeekly, false)
habit.ID = "habit-1"
habit.SpecificDays = []int{1}
tuesday := time.Date(2025, 1, 7, 0, 0, 0, 0, time.UTC)
habitRepo := &mockHabitRepo{habits: []*entities.Habit{habit}}
entryRepo := &mockEntryRepo{entries: []*entities.HabitEntry{}}
handler := NewGetTodaysHabitsHandler(habitRepo, entryRepo)
query := GetTodaysHabitsQuery{
UserID: "user-123",
Timezone: "UTC",
Date: tuesday,
}
results, err := handler.Handle(context.Background(), query)
if err != nil {
t.Fatalf("Expected no error, got %v", err)
}
if len(results) != 0 {
t.Fatalf("Expected 0 habits (no carry-over), got %d", len(results))
}
}