mas/App/Commands/Uninstall.swift
2018-12-27 14:01:48 -07:00

124 lines
3.9 KiB
Swift

//
// Upgrade.swift
// mas-cli
//
// Created by Ben Chatelain on 2018-12-27.
// Copyright © 2015 Andrew Naylor. All rights reserved.
//
import Commandant
import Result
import CommerceKit
/// Command which uninstalls apps managed by the Mac App Store. Relies on the "trash" command from Homebrew.
/// Trash requires el_capitan or higher for core bottles:
/// https://github.com/Homebrew/homebrew-core/blob/master/Formula/trash.rb
public struct UninstallCommand: CommandProtocol {
public typealias Options = UninstallOptions
public let verb = "uninstall"
public let function = "Uninstall apps installed from the Mac App Store"
public init() {}
/// Runs the uninstall command
///
/// - Parameter options: UninstallOptions (arguments) for this command
/// - Returns: Success or an error.
public func run(_ options: Options) -> Result<(), MASError> {
let appId = UInt64(options.appId)
guard let product = installedApp(appId: appId) else {
return .failure(.notInstalled)
}
if options.dryRun {
printInfo("\(product.appName) \(product.bundlePath)")
printInfo("(not removed, dry run)")
return .success(())
}
// Use the bundle path to delete the app
let status = trash(path: product.bundlePath)
if status {
return .success(())
} else {
return .failure(.searchFailed)
}
}
/// Finds an app by ID from the set of installed apps?
///
/// - Parameter appId: MAS ID for app.
/// - Returns: Software Product of app if found; nil otherwise.
func installedApp(appId: UInt64) -> CKSoftwareProduct? {
let appId = NSNumber(value: appId)
let softwareMap = CKSoftwareMap.shared()
return softwareMap.allProducts()?.first { $0.itemIdentifier == appId }
}
/// Runs the trash command in another process.
///
/// - Parameter path: Absolute path to the application bundle to uninstall.
/// - Returns: true on success; fail on error
func trash(path: String) -> Bool {
let binaryPath = "/usr/local/bin/trash"
let process = Process()
let stdout = Pipe()
let stderr = Pipe()
process.standardOutput = stdout
process.standardError = stderr
process.arguments = [path]
if #available(OSX 10.13, *) {
process.executableURL = URL(fileURLWithPath: binaryPath)
do {
try process.run()
} catch {
printInfo("Unable to launch trash command")
return false
}
} else {
process.launchPath = binaryPath
process.launch()
}
// process.terminationHandler = { (process) in
// print("\ndidFinish: \(!process.isRunning)")
// }
process.waitUntilExit()
if process.terminationStatus == 0 {
return true
} else {
let reason = process.terminationReason
let output = stderr.fileHandleForReading.readDataToEndOfFile()
printInfo("Uninstall failed: \(reason)\n\(String(data: output, encoding: String.Encoding.utf8)!)")
return false
}
}
}
/// Options for the uninstall command.
public struct UninstallOptions: OptionsProtocol {
/// Numeric app ID
let appId: Int
/// Flag indicating that removal shouldn't be performed
let dryRun: Bool
static func create(_ appId: Int) -> (_ dryRun: Bool) -> UninstallOptions {
return { dryRun in
return UninstallOptions(appId: appId, dryRun: dryRun)
}
}
public static func evaluate(_ m: CommandMode) -> Result<UninstallOptions, CommandantError<MASError>> {
return create
<*> m <| Argument(usage: "ID of app to uninstall")
<*> m <| Switch(flag: nil, key: "dry-run", usage: "dry run")
}
}