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package services
import (
"context"
"fmt"
"sort"
"time"
"github.com/NdoleStudio/httpsms/pkg/entities"
"github.com/NdoleStudio/httpsms/pkg/events"
"github.com/NdoleStudio/httpsms/pkg/repositories"
"github.com/NdoleStudio/httpsms/pkg/telemetry"
"github.com/google/uuid"
"github.com/palantir/stacktrace"
)
// MessageSendScheduleService manages message send schedules for a user.
type MessageSendScheduleService struct {
service
logger telemetry.Logger
tracer telemetry.Tracer
repository repositories.MessageSendScheduleRepository
dispatcher *EventDispatcher
}
// NewMessageSendScheduleService creates a new MessageSendScheduleService.
func NewMessageSendScheduleService(
logger telemetry.Logger,
tracer telemetry.Tracer,
repository repositories.MessageSendScheduleRepository,
dispatcher *EventDispatcher,
) *MessageSendScheduleService {
return &MessageSendScheduleService{
logger: logger.WithService(fmt.Sprintf("%T", &MessageSendScheduleService{})),
tracer: tracer,
repository: repository,
dispatcher: dispatcher,
}
}
// MessageSendScheduleUpsertParams contains the fields required to create or update a message send schedule.
type MessageSendScheduleUpsertParams struct {
UserID entities.UserID
Name string
Timezone string
Windows []entities.MessageSendScheduleWindow
}
// Index returns all message send schedules for a user.
func (service *MessageSendScheduleService) Index(
ctx context.Context,
userID entities.UserID,
) ([]entities.MessageSendSchedule, error) {
return service.repository.Index(ctx, userID)
}
// CountByUser returns the number of schedules owned by a user.
func (service *MessageSendScheduleService) CountByUser(
ctx context.Context,
userID entities.UserID,
) (int, error) {
return service.repository.CountByUser(ctx, userID)
}
// Load returns a single message send schedule for a user.
func (service *MessageSendScheduleService) Load(
ctx context.Context,
userID entities.UserID,
scheduleID uuid.UUID,
) (*entities.MessageSendSchedule, error) {
return service.repository.Load(ctx, userID, scheduleID)
}
// Store creates a new message send schedule.
func (service *MessageSendScheduleService) Store(
ctx context.Context,
params *MessageSendScheduleUpsertParams,
) (*entities.MessageSendSchedule, error) {
ctx, span := service.tracer.Start(ctx)
defer span.End()
schedule := &entities.MessageSendSchedule{
ID: uuid.New(),
UserID: params.UserID,
Name: params.Name,
Timezone: params.Timezone,
Windows: sanitizeWindows(params.Windows),
CreatedAt: time.Now().UTC(),
UpdatedAt: time.Now().UTC(),
}
if err := service.repository.Store(ctx, schedule); err != nil {
return nil, service.tracer.WrapErrorSpan(
span,
stacktrace.Propagate(
err,
fmt.Sprintf("cannot store message send schedule [%s]", schedule.ID),
),
)
}
return schedule, nil
}
// Update updates an existing message send schedule.
func (service *MessageSendScheduleService) Update(
ctx context.Context,
userID entities.UserID,
scheduleID uuid.UUID,
params *MessageSendScheduleUpsertParams,
) (*entities.MessageSendSchedule, error) {
ctx, span := service.tracer.Start(ctx)
defer span.End()
schedule, err := service.repository.Load(ctx, userID, scheduleID)
if err != nil {
return nil, err
}
schedule.Name = params.Name
schedule.Timezone = params.Timezone
schedule.Windows = sanitizeWindows(params.Windows)
schedule.UpdatedAt = time.Now().UTC()
if err = service.repository.Update(ctx, schedule); err != nil {
return nil, service.tracer.WrapErrorSpan(
span,
stacktrace.Propagate(
err,
fmt.Sprintf("cannot update message send schedule [%s]", schedule.ID),
),
)
}
return schedule, nil
}
// Delete removes a message send schedule for a user.
func (service *MessageSendScheduleService) Delete(
ctx context.Context,
userID entities.UserID,
scheduleID uuid.UUID,
) error {
ctx, span := service.tracer.Start(ctx)
defer span.End()
if err := service.repository.Delete(ctx, userID, scheduleID); err != nil {
msg := fmt.Sprintf("cannot delete message send schedule with ID [%s] for user [%s]", scheduleID, userID)
return service.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, msg))
}
event, err := service.createEvent(events.EventTypeMessageSendScheduleDeleted, fmt.Sprintf("%T", service), events.MessageSendScheduleDeletedPayload{
ScheduleID: scheduleID,
UserID: userID,
Timestamp: time.Now().UTC(),
})
if err != nil {
msg := fmt.Sprintf("cannot create [%s] event for schedule [%s]", events.EventTypeMessageSendScheduleDeleted, scheduleID)
return service.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, msg))
}
if err = service.dispatcher.Dispatch(ctx, event); err != nil {
msg := fmt.Sprintf("cannot dispatch [%s] event for schedule [%s]", event.Type(), scheduleID)
return service.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, msg))
}
return nil
}
// sanitizeWindows normalizes and sorts schedule windows by day and start minute.
func sanitizeWindows(
windows []entities.MessageSendScheduleWindow,
) []entities.MessageSendScheduleWindow {
result := make([]entities.MessageSendScheduleWindow, 0, len(windows))
for _, item := range windows {
result = append(result, entities.MessageSendScheduleWindow{
DayOfWeek: item.DayOfWeek,
StartMinute: item.StartMinute,
EndMinute: item.EndMinute,
})
}
sort.SliceStable(result, func(i, j int) bool {
if result[i].DayOfWeek == result[j].DayOfWeek {
return result[i].StartMinute < result[j].StartMinute
}
return result[i].DayOfWeek < result[j].DayOfWeek
})
return result
}
// DeleteAllForUser removes all message send schedules owned by a user.
func (service *MessageSendScheduleService) DeleteAllForUser(
ctx context.Context,
userID entities.UserID,
) error {
ctx, span := service.tracer.Start(ctx)
defer span.End()
if err := service.repository.DeleteAllForUser(ctx, userID); err != nil {
return service.tracer.WrapErrorSpan(
span,
stacktrace.Propagate(
err,
fmt.Sprintf("cannot delete message send schedules for user [%s]", userID),
),
)
}
return nil
}