wip

dots/Sources/CliMiddleware/Middleware.swift

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+import Dependencies
+import Foundation
+import XCTestDynamicOverlay
+
+/// Implements the logic for the `dots` command line tool.
+///
+/// Each command and it's sub-commands are implemented in the ``CliMiddlewareLive`` module.  While this
+/// represents the interface.
+///
+public struct CliMiddleware {
+  
+  public var brew: (BrewContext) async throws -> Void
+  public var zsh: (ZshContext) async throws -> Void
+  
+  public init(
+    brew: @escaping (BrewContext) async throws -> Void,
+    zsh: @escaping (ZshContext) async throws -> Void
+  ) {
+    self.brew = brew
+    self.zsh = zsh
+  }
+  
+  public struct GlobalContext {
+    public let dryRun: Bool
+    
+    public init(dryRun: Bool) {
+      self.dryRun = dryRun
+    }
+  }
+  
+  public struct BrewContext {
+    public let routes: [Route]
+    
+    public init(
+      routes: [Route]
+    ) {
+      self.routes = routes
+    }
+    
+    public enum Route: String, CaseIterable {
+      case all
+      case appStore
+      case brews
+      case casks
+    }
+  }
+  
+  public struct ZshContext {
+    
+    public let context: Context
+    
+    public init(
+      context: Context
+    ) {
+      self.context = context
+    }
+    
+    public enum Context {
+      case install
+      case uninstall
+    }
+  }
+}
+
+extension CliMiddleware.GlobalContext: TestDependencyKey {
+  public static let testValue: CliMiddleware.GlobalContext = .init(dryRun: true)
+}
+
+extension CliMiddleware: TestDependencyKey {
+  
+  public static let noop = Self.init(
+    brew: unimplemented("\(Self.self).brew"),
+    zsh: unimplemented("\(Self.self).zsh")
+  )
+  
+  public static let testValue = CliMiddleware.noop
+}
+
+extension DependencyValues {
+  
+  public var cliMiddleware: CliMiddleware {
+    get { self[CliMiddleware.self] }
+    set { self[CliMiddleware.self] = newValue }
+  }
+  
+  public var globals: CliMiddleware.GlobalContext {
+    get { self[CliMiddleware.GlobalContext.self] }
+    set { self[CliMiddleware.GlobalContext.self] = newValue }
+  }
+}