GeminiClient.swift

import Foundation
import GoogleGenerativeAI

class GeminiClient {

    private lazy var model = GenerativeModel(name: "gemini-pro", apiKey: APIKey.default)
    private lazy var chat: Chat = model.startChat()

    func send(message: String) async -> Result<String, GenerateContentError> {
        do {
            let response = try await chat.sendMessage(message)
            if let text = response.text {
                return .success(text)
            }
        } catch let error as GenerateContentError {
            return .failure(error)
        } catch {
            return .failure(GenerateContentError.internalError(underlying: GenericError()))
        }
        return .failure(GenerateContentError.internalError(underlying: GenericError()))
    }
}

struct GenericError: Error {
}