// swift-tools-version:5.11
import PackageDescription

let package = Package(
  name: "MyPackage",
  platforms: [.iOS(.v16), .tvOS(.v16), .macOS(.v12), .watchOS(.v9), .macCatalyst(.v16), .visionOS(.v1)],
  products: [
    .executable(name: "MyApp", targets: ["MyApp"])
  ],
  dependencies: [
    .package(url: "https://github.com/wmalloc/HTTPRequestable.git", from: "0.21.0")
  ],
  targets: [
    .target(name: "MyApp", dependencies: 
      [.product(name: "HTTPRequestable", package: "HTTPRequestable")])
  ]
)

final class HackerNews: HTTPTransferable, @unchecked Sendable {
  var requestModifiers: [any HTTPRequestModifier] = []
  var interceptors: [any HTTPInterceptor] = []

  let session: URLSession

  required init(session: URLSession = .shared) {
    self.session = session
    let logger = LoggerInterceptor()
    requestModifiers.append(logger)
    interceptors.append(logger)
  }

 func storyList(type: String) async throws -> StoryList.ResultType {
    let request = try StoryListRequest(environment, storyType: type)
    return try await object(for: request, delegate: nil).value ?? []
  }
}

struct StoryListRequest: HTTPRequestConfigurable {
  typealias ResultType = [Int]
  
  let environment: HTTPEnvironment
  let headerFields: HTTPFields? = .init([.accept(.json)])
  let queryItems: [URLQueryItem]? = [URLQueryItem(name: "print", value: "pretty")]
  let path: String?
  
  var responseDataTransformer: Transformer<Data, ResultType>? {
    Self.jsonDecoder
  }
  
  init(_ environment: HTTPEnvironment, storyType: String) throws {
    precondition(!storyType.isEmpty, "Story type cannot be empty")
    self.environment = environment
    self.path = "/\(storyType).json"
  }
}

var api = HackerNews()
let topStories = try await api.storyList(type: "topstories.json")