Repository.swift

protocol Repository {
    
    func queryTasks (_ page: Int, completion: @escaping ([Task], NSError?) -> Void)
    func queryTasksInDay (_ day: Date) -> [Task]
    func queryTasksInDay (_ day: Date, completion: @escaping ([Task], NSError?) -> Void)
    func queryUnsyncedTasks() -> [Task]
    func queryDeletedTasks (_ completion: @escaping ([Task]) -> Void)
    func queryUpdates (sinceDate: Date, completion: @escaping ([Task], [String], NSError?) -> Void)
    // Marks the Task as deleted. If forceDelete is true it will be removed from db
    func deleteTask (_ task: Task, forceDelete: Bool, completion: @escaping ((_ success: Bool) -> Void))
    func deleteTask (objectId: String, completion: @escaping ((_ success: Bool) -> Void))
    // Save a task and returns the same task with a taskId generated if it didn't had
    func saveTask (_ task: Task, completion: @escaping ((_ task: Task) -> Void))
    
}