import SwiftUI
import FoundationModels
import Observation

@Observable class ApplicationData {
   var response: AttributedString = ""
   var prompt: String = ""

   @ObservationIgnored var session = LanguageModelSession()

   static let shared: ApplicationData = ApplicationData()
   private init() { }

   func sendPrompt() async {
      do {
         let options = GenerationOptions(sampling: .greedy)
         let answer = try await session.respond(to: prompt, options: options)

         var newResponse = AttributedString("\(answer.content)\n\n")
         newResponse.font = .system(size: 16, weight: .regular)
         response.append(newResponse)
      } catch {
         response.append(AttributedString("Error accessing the model: \(error)\n\n"))
      }
      prompt = ""
   }
}