Add existing codebase

pkg/brainbuffer/appointment/entity.go

@@ -0,0 +1,27 @@
+package appointment
+
+import (
+	"brainbuffer/pkg/brainbuffer/scheduling"
+	"time"
+)
+
+type Status int
+
+const (
+	Overdue Status = iota
+	Upcoming
+	Missed
+	Completed
+)
+
+type Appointment struct {
+	ID                int64
+	TaskID            int64
+	Status            Status
+	SchedulingPattern scheduling.Pattern
+	Time              time.Time
+	DurationOffset    time.Duration
+	CreationTime      time.Time
+}
+
+type Appointments []*Appointment

pkg/brainbuffer/appointment/in_memo_repo.go

@@ -0,0 +1,83 @@
+package appointment
+
+import (
+	"brainbuffer/pkg/brainbuffer/repository"
+	"time"
+)
+
+type inMemoryRepository struct {
+	db        map[int64]*Appointment
+	idCounter int64
+}
+
+func (repo *inMemoryRepository) Save(appointment *Appointment) error {
+	repo.idCounter++
+	appointment.ID = repo.idCounter
+	repo.db[repo.idCounter] = appointment
+
+	return nil
+}
+
+func (repo *inMemoryRepository) FindByID(id int64) (*Appointment, error) {
+	if v, ok := repo.db[id]; ok {
+		return v, nil
+	} else {
+		return nil, nil
+	}
+}
+
+func (repo *inMemoryRepository) GetAllByTask(taskId int64, page repository.Page) (Appointments, error) {
+	taskAppointments := make(Appointments, 0)
+
+	for _, val := range repo.db {
+		if val.TaskID == taskId {
+			taskAppointments = append(taskAppointments, val)
+		}
+	}
+
+	return taskAppointments, nil
+}
+
+func (repo *inMemoryRepository) GetAllByTasks(taskIds []int64, page repository.Page) (Appointments, error) {
+	taskAppointments := make(Appointments, 0)
+
+	for _, val := range repo.db {
+		if _, found := findInIntSlice(val.TaskID, taskIds); found {
+			taskAppointments = append(taskAppointments, val)
+		}
+	}
+
+	return taskAppointments, nil
+}
+
+func (repo *inMemoryRepository) GetAllByTasksBefore(taskIds []int64, beforeTime time.Time, page repository.Page) (Appointments, error) {
+	taskAppointments := make(Appointments, 0)
+
+	for _, val := range repo.db {
+		if _, found := findInIntSlice(val.TaskID, taskIds); found && val.Time.Before(beforeTime) {
+			taskAppointments = append(taskAppointments, val)
+		}
+	}
+
+	return taskAppointments, nil
+}
+
+func (repo *inMemoryRepository) DeleteAllByTask(taskId int64) error {
+	for id, v := range repo.db {
+		if v.TaskID == taskId {
+			delete(repo.db, id)
+		}
+	}
+
+	return nil
+}
+
+func findInIntSlice(val int64, slice []int64) (int, bool) {
+	for i, v := range slice {
+		if v == val {
+			return i, true
+		}
+	}
+
+	return -1, false
+}

pkg/brainbuffer/appointment/repository.go

@@ -0,0 +1,19 @@
+package appointment
+
+import (
+	"brainbuffer/pkg/brainbuffer/repository"
+	"time"
+)
+
+type Repository interface {
+	Save(appointment *Appointment) error
+	FindByID(id int64) (*Appointment, error)
+	GetAllByTask(taskId int64, page repository.Page) (Appointments, error)
+	GetAllByTasks(taskIds []int64, page repository.Page) (Appointments, error)
+	GetAllByTasksBefore(taskIds []int64, beforeTime time.Time, page repository.Page) (Appointments, error)
+	DeleteAllByTask(taskId int64) error
+}
+
+func NewRepository() Repository {
+	return &inMemoryRepository{}
+}

pkg/brainbuffer/appointment/service.go

@@ -0,0 +1,108 @@
+package appointment
+
+import (
+	apperrors "brainbuffer/pkg/brainbuffer/errors"
+	"brainbuffer/pkg/brainbuffer/repository"
+	"time"
+)
+
+var taskNotFoundError = apperrors.NotFoundError{Message: "Task with given ID was not found."}
+
+type Service interface {
+	Create(appointment *Appointment) error
+	CreateNextAppointment(appointment *Appointment) error
+	GetByID(id int64) (*Appointment, error)
+	GetAllByTask(taskId int64, page repository.Page) (Appointments, error)
+	GetAllByTasks(tasksIds []int64, page repository.Page) (Appointments, error)
+	GetAllByTasksBefore(tasksIds []int64, beforeTime time.Time, page repository.Page) (Appointments, error)
+	DeleteAllByTask(taskId int64) error
+}
+
+type defaultService struct {
+	repository Repository
+}
+
+func NewService() Service {
+	return &defaultService{repository: NewRepository()}
+}
+
+func (service *defaultService) Create(appointment *Appointment) error {
+	appointment.CreationTime = time.Now()
+
+	if err := service.repository.Save(appointment); err != nil {
+		return apperrors.UnknownError{Err: err}
+	}
+
+	return nil
+}
+
+func (service *defaultService) CreateNextAppointment(appointment *Appointment) error {
+	nextTime, err := appointment.SchedulingPattern.NextTime(appointment.Time)
+	if err != nil {
+		return apperrors.UnknownError{Err: err}
+	}
+
+	nextAppointment := Appointment{
+		ID:                0,
+		TaskID:            appointment.TaskID,
+		Status:            Upcoming,
+		SchedulingPattern: appointment.SchedulingPattern,
+		Time:              *nextTime,
+		DurationOffset:    0,
+		CreationTime:      time.Now(),
+	}
+
+	if err := service.Create(&nextAppointment); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (service *defaultService) GetByID(id int64) (*Appointment, error) {
+	a, err := service.repository.FindByID(id)
+	if err != nil {
+		return nil, apperrors.UnknownError{Err: err}
+	}
+
+	if a == nil {
+		return nil, taskNotFoundError
+	}
+
+	return a, nil
+}
+
+func (service *defaultService) GetAllByTask(taskId int64, page repository.Page) (Appointments, error) {
+	appointments, err := service.repository.GetAllByTask(taskId, page)
+	if err != nil {
+		return nil, apperrors.UnknownError{Err: err}
+	}
+
+	return appointments, nil
+}
+
+func (service *defaultService) GetAllByTasks(tasksIds []int64, page repository.Page) (Appointments, error) {
+	appointments, err := service.repository.GetAllByTasks(tasksIds, page)
+	if err != nil {
+		return nil, apperrors.UnknownError{Err: err}
+	}
+
+	return appointments, nil
+}
+
+func (service *defaultService) GetAllByTasksBefore(tasksIds []int64, beforeTime time.Time, page repository.Page) (Appointments, error) {
+	appointments, err := service.repository.GetAllByTasksBefore(tasksIds, beforeTime, page)
+	if err != nil {
+		return nil, apperrors.UnknownError{Err: err}
+	}
+
+	return appointments, nil
+}
+
+func (service *defaultService) DeleteAllByTask(taskId int64) error {
+	if err := service.repository.DeleteAllByTask(taskId); err != nil {
+		return apperrors.UnknownError{Err: err}
+	}
+
+	return nil
+}