package useCases

import (
	"RenewCMS/internal/domain/audit"
	"context"
	"time"
)

type GetActivityRetentionUseCase struct {
	settings audit.SettingsRepository
	now      func() time.Time
}

func NewGetActivityRetentionUseCase(settings audit.SettingsRepository, now func() time.Time) *GetActivityRetentionUseCase {
	return &GetActivityRetentionUseCase{settings, now}
}

func (g *GetActivityRetentionUseCase) GetActivityRetention() (audit.Settings, error) {
	current, err := g.settings.Get()
	if err != nil {
		return audit.Settings{}, err
	}
	return current.WithNextCleanup(g.now()), nil
}

type UpdateActivityRetentionUseCase struct {
	settings audit.SettingsRepository
	recorder audit.Recorder
	now      func() time.Time
}

func NewUpdateActivityRetentionUseCase(settings audit.SettingsRepository, recorder audit.Recorder, now func() time.Time) *UpdateActivityRetentionUseCase {
	return &UpdateActivityRetentionUseCase{settings, recorder, now}
}

func (u *UpdateActivityRetentionUseCase) UpdateActivityRetention(ctx context.Context, days int) (audit.Settings, error) {
	if err := audit.ValidateRetentionDays(days); err != nil {
		return audit.Settings{}, err
	}
	current, err := u.settings.Get()
	if err != nil {
		return audit.Settings{}, err
	}
	if current.RetentionDays == days {
		return current.WithNextCleanup(u.now()), nil
	}
	if err := u.settings.SaveRetention(days); err != nil {
		return audit.Settings{}, err
	}

	event := audit.NewEvent(audit.ActionRetentionChanged, audit.CategorySystem)
	event.Params = map[string]any{audit.ParamFrom: current.RetentionDays, audit.ParamTo: days}
	u.recorder.Record(ctx, event)

	current.RetentionDays = days
	return current.WithNextCleanup(u.now()), nil
}