BuildArguments.swift

/// Configures a build with Xcode.
public struct BuildArguments {
	/// The project to build.
	public let project: ProjectLocator

	/// The scheme to build in the project.
	public var scheme: String?

	/// The configuration to use when building the project.
	public var configuration: String?
	
	/// The path to the derived data.
	public var derivedDataPath: String?

	/// The platform SDK to build for.
	public var sdk: SDK?

	/// The run destination to try building for.
	public var destination: String?

	/// The amount of time xcodebuild spends searching for the destination (in seconds).
	public var destinationTimeout: UInt?

	/// The build setting whether the product includes only object code for
	/// the native architecture.
	public var onlyActiveArchitecture: Bool? = nil

	/// The build setting whether full bitcode should be embedded in the binary.
	public var bitcodeGenerationMode: BitcodeGenerationMode? = nil

	public init(project: ProjectLocator, scheme: String? = nil, configuration: String? = nil, derivedDataPath: String? = nil, sdk: SDK? = nil) {
		self.project = project
		self.scheme = scheme
		self.configuration = configuration
		self.derivedDataPath = derivedDataPath
		self.sdk = sdk
	}

	/// The `xcodebuild` invocation corresponding to the receiver.
	public var arguments: [String] {
		var args = [ "xcodebuild" ]

		switch project {
		case let .Workspace(URL):
			args += [ "-workspace", URL.path! ]

		case let .ProjectFile(URL):
			args += [ "-project", URL.path! ]
		}

		if let scheme = scheme {
			args += [ "-scheme", scheme ]
		}

		if let configuration = configuration {
			args += [ "-configuration", configuration ]
		}
		
		if let derivedDataPath = derivedDataPath, let standarizedPath = NSURL(fileURLWithPath: (derivedDataPath as NSString).stringByExpandingTildeInPath).URLByStandardizingPath?.path where !derivedDataPath.isEmpty && !standarizedPath.isEmpty {
			args += [ "-derivedDataPath", standarizedPath ]
		}

		if let sdk = sdk {
			// Passing in -sdk macosx appears to break implicit dependency
			// resolution (see Carthage/Carthage#347).
			//
			// Since we wouldn't be trying to build this target unless it were
			// for OS X already, just let xcodebuild figure out the SDK on its
			// own.
			if sdk != .MacOSX {
				args += [ "-sdk", sdk.rawValue ]
			}
		}

		if let destination = destination {
			args += [ "-destination", destination ]
		}

		if let destinationTimeout = destinationTimeout {
			args += [ "-destination-timeout", String(destinationTimeout) ]
		}

		if let onlyActiveArchitecture = onlyActiveArchitecture {
			if onlyActiveArchitecture {
				args += [ "ONLY_ACTIVE_ARCH=YES" ]
			} else {
				args += [ "ONLY_ACTIVE_ARCH=NO" ]
			}
		}

		if let bitcodeGenerationMode = bitcodeGenerationMode {
			args += [ "BITCODE_GENERATION_MODE=\(bitcodeGenerationMode.rawValue)" ]
		}

		// Disable code signing requirement for all builds
		// Frameworks get signed in the copy-frameworks action
		args += [ "CODE_SIGNING_REQUIRED=NO", "CODE_SIGN_IDENTITY=" ]
		
		args += [ "CARTHAGE=YES" ]

		return args
	}
}

extension BuildArguments: CustomStringConvertible {
	public var description: String {
		return arguments.joinWithSeparator(" ")
	}
}