import ArgumentParser
import Hummingbird
import Logging

@main
struct App: AsyncParsableCommand {

  @Option(name: .shortAndLong)
  var hostname: String = "127.0.0.1"

  @Option(name: .shortAndLong)
  var port: Int = 8080

  @Option(name: .shortAndLong)
  var logLevel: Logger.Level?

  func run() async throws {
    let app = try await buildApplication(.init(hostname: hostname, port: port, logLevel: logLevel))
    try await app.runService()
  }
}

/// Extend `Logger.Level` so it can be used as an argument

#if hasFeature(RetroactiveAttribute)
  extension Logger.Level: @retroactive ExpressibleByArgument {}
#else
  extension Logger.Level: ExpressibleByArgument {}
#endif