import XCTest
import CliVersion
import ShellClient

final class GitVersionTests: XCTestCase {

  override func invokeTest() {
    withDependencies({
      $0.logger.logLevel = .debug
      $0.logger = .liveValue
      $0.shellClient = .liveValue
      $0.gitVersionClient = .liveValue
      $0.fileClient = .liveValue
    }, operation: {
      super.invokeTest()
    })
  }

  var gitDir: String {
    URL(fileURLWithPath: #file)
      .deletingLastPathComponent()
      .deletingLastPathComponent()
      .deletingLastPathComponent()
      .absoluteString
      .replacingOccurrences(of: "file://", with: "")
  }

  func test_overrides_work() throws {
    try withDependencies {
      $0.gitVersionClient.override(with: "blob")
    } operation: {
      @Dependency(\.gitVersionClient) var versionClient

      let version = try versionClient.currentVersion()
      XCTAssertEqual(version, "blob")
    }
  }

  func test_live() throws {
    @Dependency(\.gitVersionClient) var versionClient: GitVersionClient

    let version = try versionClient.currentVersion(in: gitDir)
    print("VERSION: \(version)")
    // can't really have a predictable result for the live client.
    XCTAssertNotEqual(version, "blob")

  }

  func test_commands() throws {
    @Dependency(\.shellClient) var shellClient

    let branch = try shellClient.background(
      .gitCurrentBranch(gitDirectory: gitDir),
      trimmingCharactersIn: .whitespacesAndNewlines
    )
    print("BRANCH: \(branch)")
    XCTAssertEqual(branch, "main")

    let commit = try shellClient.background(
      .gitCurrentSha(gitDirectory: gitDir),
      trimmingCharactersIn: .whitespacesAndNewlines
    )
    print("COMMIT: \(commit)")
    XCTAssertNotEqual(commit, "")

  }

  func test_file_client() throws {
    @Dependency(\.fileClient) var fileClient
    
    let tmpDir = FileManager.default.temporaryDirectory
      .appendingPathComponent("file-client-test")
    
    try FileManager.default.createDirectory(at: tmpDir, withIntermediateDirectories: true)
    defer { try! FileManager.default.removeItem(at: tmpDir) }
    
    let filePath = tmpDir.appendingPathComponent("blob.txt")
    try fileClient.write(string: "Blob", to: filePath)
    
    let contents = try String(contentsOf: filePath)
      .trimmingCharacters(in: .whitespacesAndNewlines)
    XCTAssertEqual(contents, "Blob")

  }

  func test_file_client_with_string_path() throws {
    @Dependency(\.fileClient) var fileClient

    let tmpDir = FileManager.default.temporaryDirectory
      .appendingPathComponent("file-client-string-test")

    try FileManager.default.createDirectory(at: tmpDir, withIntermediateDirectories: true)
    defer { try! FileManager.default.removeItem(at: tmpDir) }

    let filePath = tmpDir.appendingPathComponent("blob.txt")
    let fileString = filePath.absoluteString.replacingOccurrences(of: "file://", with: "")
    try fileClient.write(string: "Blob", to: fileString)

    let contents = try String(contentsOf: filePath)
      .trimmingCharacters(in: .whitespacesAndNewlines)
    XCTAssertEqual(contents, "Blob")
  }
}