//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//

import SKSupport

@preconcurrency import struct PackageModel.BuildFlags
import struct TSCBasic.AbsolutePath

/// Build configuration
public struct BuildSetup: Sendable {

  /// Default configuration
  public static let `default` = BuildSetup(
    configuration: nil,
    defaultWorkspaceType: nil,
    path: nil,
    flags: BuildFlags()
  )

  /// Build configuration (debug|release).
  public var configuration: BuildConfiguration?

  /// Default workspace type (buildserver|compdb|swiftpm). Overrides workspace type selection logic.
  public var defaultWorkspaceType: WorkspaceType?

  /// Build artifacts directory path. If nil, the build system may choose a default value.
  public var path: AbsolutePath?

  /// Additional build flags
  public var flags: BuildFlags

  public init(
    configuration: BuildConfiguration?,
    defaultWorkspaceType: WorkspaceType?,
    path: AbsolutePath?,
    flags: BuildFlags
  ) {
    self.configuration = configuration
    self.defaultWorkspaceType = defaultWorkspaceType
    self.path = path
    self.flags = flags
  }

  /// Create a new `BuildSetup` merging this and `other`.
  ///
  /// For any option that only takes a single value (like `configuration`), `other` takes precedence. For all array
  /// arguments, `other` is appended to the options provided by this setup.
  public func merging(_ other: BuildSetup) -> BuildSetup {
    var flags = self.flags
    flags = flags.merging(other.flags)
    return BuildSetup(
      configuration: other.configuration ?? self.configuration,
      defaultWorkspaceType: other.defaultWorkspaceType ?? self.defaultWorkspaceType,
      path: other.path ?? self.path,
      flags: flags
    )
  }
}