import Dependencies
import DependenciesMacros
import Elementary
import Logging
import SharedModels

public extension DependencyValues {
  var viewController: ViewController {
    get { self[ViewController.self] }
    set { self[ViewController.self] = newValue }
  }
}

public typealias AnySendableHTML = (any HTML & Sendable)

@DependencyClient
public struct ViewController: Sendable {
  public typealias AuthenticateHandler = @Sendable (User) -> Void
  public typealias CurrentUserHandler = @Sendable () throws -> User

  public var view: @Sendable (Request) async throws -> AnySendableHTML

  @Sendable
  public func view(
    for route: SiteRoute.View,
    isHtmxRequest: Bool,
    logger: Logger,
    authenticate: @escaping AuthenticateHandler,
    currentUser: @escaping CurrentUserHandler
  ) async throws -> AnySendableHTML {
    try await view(.init(
      route,
      isHtmxRequest: isHtmxRequest,
      authenticate: authenticate,
      logger: logger,
      currentUser: currentUser
    ))
  }

  public struct Request: Sendable {
    public let route: SiteRoute.View
    public let isHtmxRequest: Bool
    public let authenticate: AuthenticateHandler
    public let logger: Logger
    public let currentUser: CurrentUserHandler

    public init(
      _ route: SiteRoute.View,
      isHtmxRequest: Bool,
      authenticate: @escaping AuthenticateHandler,
      logger: Logger,
      currentUser: @escaping CurrentUserHandler
    ) {
      self.route = route
      self.isHtmxRequest = isHtmxRequest
      self.authenticate = authenticate
      self.logger = logger
      self.currentUser = currentUser
    }
  }

}

extension ViewController: TestDependencyKey {
  public static let testValue: ViewController = Self()
}