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I have this function in my TaskService:

func deleteTask(task: DistributionTask) async throws -> Void {
    
    let (tasksCollection, userTasksIdsField, teamTasksIdsField) = task.isCompleted
        ? (FirestoreConstants.CollectionpletedTasks,
           FirestoreConstants.Field.UserpletedTaskIds,
           FirestoreConstants.Field.TeampletedTaskIds)
        : (FirestoreConstants.Collection.activeTasks,
           FirestoreConstants.Field.User.activeTaskIds,
           FirestoreConstants.Field.Team.activeTaskIds)
    
        try await taskRepository.deleteTask(from: tasksCollection, taskID: task.id)
        
        try await teamRepository.removeTaskReferenceFromTeam(field: teamTasksIdsField, teamID: task.teamId, taskID: task.id)
        
        try await userRepository.removeTaskReferenceFromUser(field: userTasksIdsField, userID: task.distributorId, taskID: task.id)
                
}

func deleteTask(from collection: String, taskID: String) async throws -> Void {
    try await db.collection(collection).document(taskID).delete()
}

func removeTaskReferenceFromUser(field: String, userID: String, taskID: String) async throws -> Void {
    
}

func removeTaskReferenceFromTeam(field: String, teamID: String, taskID: String) async throws -> Void {
    try await db.collection(FirestoreConstants.Collection.teams).document(teamID).updateData([
        field: FieldValue.arrayRemove([taskID])
    ])
}

and there are three functions defined in different repositories (task, user, team) but they need to be done atomically for example with runTransaction method but the problem is if I coordinate those 3 functions from one single TaskService I can't use transaction.

In addition, I do not want to just wrap those 3 calls with runTransaction in my service because that would mix aplication logic with firebase logic.

My question is how to keep application and firebase logic separated but do those 3 delete functions as atomic operation?

I tried making some kind of transcation coordinator but it did not work.

本文标签： Separating Firebase logic from business logic in Swift using ServiceRepository patternStack Overflow

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