declare const empty: Effect.Effect<AiChat.Service, never, AiLanguageModel.AiLanguageModel>

declare const fromExport: (
  data: unknown,
  options?: { readonly system?: string | undefined }
) => Effect.Effect<AiChat.Service, ParseError, AiLanguageModel.AiLanguageModel>

declare const fromJson: (
  data: string,
  options?: { readonly system?: string | undefined }
) => Effect.Effect<AiChat.Service, ParseError, AiLanguageModel.AiLanguageModel>

declare const fromPrompt: (options: {
  readonly prompt: AiInput.Raw
  readonly system?: string
}) => Effect.Effect<AiChat.Service, never, AiLanguageModel.AiLanguageModel>

declare class AiChat

export interface Service {
  /**
   * The chat history.
   */
  readonly history: Effect.Effect<AiInput.AiInput>

  /**
   * Exports the chat into a structured format.
   */
  readonly export: Effect.Effect<unknown>

  /**
   * Exports the chat as a JSON string.
   */
  readonly exportJson: Effect.Effect<string>

  /**
   * Generate text using a large language model for the specified `prompt`.
   *
   * If a `toolkit` is specified, the large language model will additionally
   * be able to perform tool calls to augment its response.
   *
   * Both input and output messages will be added to the chat history.
   */
  readonly generateText: <
    Tools extends AiTool.Any,
    Options extends NoExcessProperties<AiLanguageModel.GenerateTextOptions<any>, Options>
  >(
    options: Options & Omit<AiLanguageModel.GenerateTextOptions<Tools>, "system">
  ) => Effect.Effect<
    AiLanguageModel.ExtractSuccess<Options>,
    AiLanguageModel.ExtractError<Options>,
    AiLanguageModel.ExtractContext<Options>
  >

  /**
   * Generate text using a large language model for the specified `prompt`,
   * streaming output from the model as soon as it is available.
   *
   * If a `toolkit` is specified, the large language model will additionally
   * be able to perform tool calls to augment its response.
   *
   * Both input and output messages will be added to the chat history.
   */
  readonly streamText: <
    Tools extends AiTool.Any,
    Options extends NoExcessProperties<AiLanguageModel.GenerateTextOptions<any>, Options>
  >(
    options: Options & Omit<AiLanguageModel.GenerateTextOptions<Tools>, "system">
  ) => Stream.Stream<
    AiLanguageModel.ExtractSuccess<Options>,
    AiLanguageModel.ExtractError<Options>,
    AiLanguageModel.ExtractContext<Options>
  >

  /**
   * Generate a structured object for the specified prompt and schema using a
   * large language model.
   *
   * When using a `Schema` that does not have an `identifier` or `_tag`
   * property, you must specify a `toolCallId` to properly associate the
   * output of the model.
   *
   * Both input and output messages will be added to the chat history.
   */
  readonly generateObject: <A, I extends Record<string, unknown>, R>(
    options: Omit<AiLanguageModel.GenerateObjectOptions<A, I, R>, "system">
  ) => Effect.Effect<AiResponse.WithStructuredOutput<A>, AiError, R>
}