@_spi(Internal) @_exported import CommandClient
@_exported import Dependencies
import Foundation
import Logging
@_exported import ShellClient

public protocol TestCase {}

public extension TestCase {

  static var loggingOptions: LoggingOptions {
    let levelString = ProcessInfo.processInfo.environment["LOG_LEVEL"] ?? "debug"
    let logLevel = Logger.Level(rawValue: levelString) ?? .debug
    return .init(commandName: "\(Self.self)", logLevel: logLevel)
  }

  func withCapturingCommandClient(
    _ key: String,
    dependencies setupDependencies: @escaping (inout DependencyValues) -> Void = { _ in },
    run: @Sendable @escaping () async throws -> Void,
    assert: @Sendable @escaping (CommandClient.RunCommandOptions) -> Void
  ) async throws {
    let captured = CommandClient.CapturingClient()
    try await withDependencies {
      $0.commandClient = .capturing(captured)
      setupDependencies(&$0)
    } operation: {
      try await Self.loggingOptions.withLogger {
        try await run()

        guard let options = await captured.options else {
          throw TestSupportError.optionsNotSet
        }

        assert(options)
      }
    }
  }

  func withTestLogger(
    key: String,
    logLevel: Logger.Level = .debug,
    operation: @escaping @Sendable () throws -> Void
  ) rethrows {
    try TestSupport.withTestLogger(
      key: key,
      label: "\(Self.self)",
      logLevel: logLevel
    ) {
      try operation()
    }
  }

  func withTestLogger(
    key: String,
    logLevel: Logger.Level = .debug,
    dependencies setupDependencies: @escaping (inout DependencyValues) -> Void,
    operation: @escaping @Sendable () throws -> Void
  ) rethrows {
    try TestSupport.withTestLogger(
      key: key,
      label: "\(Self.self)",
      logLevel: logLevel,
      dependencies: setupDependencies
    ) {
      try operation()
    }
  }

  func withTestLogger(
    key: String,
    logLevel: Logger.Level = .debug,
    operation: @escaping @Sendable () async throws -> Void
  ) async rethrows {
    try await TestSupport.withTestLogger(
      key: key,
      label: "\(Self.self)",
      logLevel: logLevel
    ) {
      try await operation()
    }
  }

  func withTestLogger(
    key: String,
    logLevel: Logger.Level = .debug,
    dependencies setupDependencies: @escaping (inout DependencyValues) -> Void,
    operation: @escaping @Sendable () async throws -> Void
  ) async rethrows {
    try await TestSupport.withTestLogger(
      key: key,
      label: "\(Self.self)",
      logLevel: logLevel,
      dependencies: setupDependencies
    ) {
      try await operation()
    }
  }
}

public func withTestLogger(
  key: String,
  label: String,
  logLevel: Logger.Level = .debug,
  operation: @escaping @Sendable () throws -> Void
) rethrows {
  try withDependencies {
    $0.logger = .init(label: label)
    $0.logger[metadataKey: "test"] = "\(key)"
    $0.logger.logLevel = logLevel
  } operation: {
    try operation()
  }
}

public func withTestLogger(
  key: String,
  label: String,
  logLevel: Logger.Level = .debug,
  dependencies setupDependencies: @escaping (inout DependencyValues) -> Void,
  operation: @escaping @Sendable () throws -> Void
) rethrows {
  try withDependencies {
    $0.logger = .init(label: label)
    $0.logger[metadataKey: "test"] = "\(key)"
    $0.logger.logLevel = logLevel
    setupDependencies(&$0)
  } operation: {
    try operation()
  }
}

public func withTestLogger(
  key: String,
  label: String,
  logLevel: Logger.Level = .debug,
  operation: @escaping @Sendable () async throws -> Void
) async rethrows {
  try await withDependencies {
    $0.logger = .init(label: label)
    $0.logger[metadataKey: "test"] = "\(key)"
    $0.logger.logLevel = logLevel
  } operation: {
    try await operation()
  }
}

public func withTestLogger(
  key: String,
  label: String,
  logLevel: Logger.Level = .debug,
  dependencies setupDependencies: @escaping (inout DependencyValues) -> Void,
  operation: @escaping @Sendable () async throws -> Void
) async rethrows {
  try await withDependencies {
    $0.logger = .init(label: label)
    $0.logger[metadataKey: "test"] = "\(key)"
    $0.logger.logLevel = logLevel
    setupDependencies(&$0)
  } operation: {
    try await operation()
  }
}

enum TestSupportError: Error {
  case optionsNotSet
}