//
//  Upgrade.swift
//  mas-cli
//
//  Created by Andrew Naylor on 30/12/2015.
//  Copyright © 2015 Andrew Naylor. All rights reserved.
//

struct UpgradeCommand: CommandType {
    typealias Options = NoOptions<MASError>
    let verb = "upgrade"
    let function = "Performs all pending updates from the Mac App Store"
    
    func run(options: Options) -> Result<(), MASError> {
        let updateController = CKUpdateController.sharedUpdateController()
        
        guard let updates = updateController.availableUpdates() where updates.count > 0 else {
            print("Everything is up-to-date")
            return .Success(())
        }
        
        print("Upgrading \(updates.count) outdated application\(updates.count > 1 ? "s" : ""):")
        print(updates.map({ "\($0.title) (\($0.bundleVersion))" }).joinWithSeparator(", "))
        for update in updates {
            if let error = download(UInt64(update.itemIdentifier.intValue)) {
                return .Failure(error)
            }
        }
        return .Success(())
    }
}