import { JSONSchema7 } from 'json-schema';
import { SharedV2ProviderOptions } from '../../shared/v2/shared-v2-provider-options';
import { LanguageModelV2FunctionTool } from './language-model-v2-function-tool';
import { LanguageModelV2Prompt } from './language-model-v2-prompt';
import { LanguageModelV2ProviderTool } from './language-model-v2-provider-defined-tool';
import { LanguageModelV2ToolChoice } from './language-model-v2-tool-choice';

export type LanguageModelV2CallOptions = {
  /**
A language mode prompt is a standardized prompt type.

Note: This is **not** the user-facing prompt. The AI SDK methods will map the
user-facing prompt types such as chat or instruction prompts to this format.
That approach allows us to evolve the user  facing prompts without breaking
the language model interface.
   */
  prompt: LanguageModelV2Prompt;

  /**
Maximum number of tokens to generate.
   */
  maxOutputTokens?: number;

  /**
Temperature setting. The range depends on the provider and model.
 */
  temperature?: number;

  /**
Stop sequences.
If set, the model will stop generating text when one of the stop sequences is generated.
Providers may have limits on the number of stop sequences.
 */
  stopSequences?: string[];

  /**
Nucleus sampling.
 */
  topP?: number;

  /**
Only sample from the top K options for each subsequent token.

Used to remove "long tail" low probability responses.
Recommended for advanced use cases only. You usually only need to use temperature.
 */
  topK?: number;

  /**
Presence penalty setting. It affects the likelihood of the model to
repeat information that is already in the prompt.
 */
  presencePenalty?: number;

  /**
Frequency penalty setting. It affects the likelihood of the model
to repeatedly use the same words or phrases.
 */
  frequencyPenalty?: number;

  /**
Response format. The output can either be text or JSON. Default is text.

If JSON is selected, a schema can optionally be provided to guide the LLM.
 */
  responseFormat?:
    | { type: 'text' }
    | {
        type: 'json';

        /**
         * JSON schema that the generated output should conform to.
         */
        schema?: JSONSchema7;

        /**
         * Name of output that should be generated. Used by some providers for additional LLM guidance.
         */
        name?: string;

        /**
         * Description of the output that should be generated. Used by some providers for additional LLM guidance.
         */
        description?: string;
      };

  /**
The seed (integer) to use for random sampling. If set and supported
by the model, calls will generate deterministic results.
 */
  seed?: number;

  /**
The tools that are available for the model.
  */
  tools?: Array<LanguageModelV2FunctionTool | LanguageModelV2ProviderTool>;

  /**
Specifies how the tool should be selected. Defaults to 'auto'.
*/
  toolChoice?: LanguageModelV2ToolChoice;

  /**
Include raw chunks in the stream. Only applicable for streaming calls.
 */
  includeRawChunks?: boolean;

  /**
Abort signal for cancelling the operation.
 */
  abortSignal?: AbortSignal;

  /**
Additional HTTP headers to be sent with the request.
Only applicable for HTTP-based providers.
 */
  headers?: Record<string, string | undefined>;

  /**
   * Additional provider-specific options. They are passed through
   * to the provider from the AI SDK and enable provider-specific
   * functionality that can be fully encapsulated in the provider.
   */
  providerOptions?: SharedV2ProviderOptions;
};