/**
 * Provider adapter interface
 *
 * Each provider (OpenAI, Anthropic, Ollama) implements this interface
 * to handle API-specific request/response formatting.
 */
import type { ToolMetadata, ContentPart, PromptContent } from '../types.js';
import type { TooledPromptEmitter } from '../events.js';
export interface ToolCallInfo {
    id: string;
    name: string;
    arguments: string;
}
export interface ToolResultInfo {
    id: string;
    name: string;
    result: string;
    /** Base64 data-URL images returned by the tool */
    images?: string[];
}
export interface Usage {
    promptTokens: number;
    completionTokens: number;
    totalTokens: number;
}
export interface ParsedResponse {
    content: string;
    toolCalls: ToolCallInfo[];
    usage?: Usage;
}
export interface BuildRequestParams {
    apiUrl: string;
    apiKey: string | undefined;
    modelName: string;
    messages: unknown[];
    tools: ToolMetadata[];
    stream: boolean;
    temperature: number | undefined;
    maxTokens: number | undefined;
    systemPrompt?: PromptContent;
    schema?: {
        jsonSchema: Record<string, unknown>;
    };
}
export interface BuildRequestResult {
    url: string;
    headers: Record<string, string>;
    body: Record<string, unknown>;
}
export interface ProviderAdapter<TMessage = unknown> {
    /** Build the full HTTP request for one loop iteration */
    buildRequest(params: BuildRequestParams): BuildRequestResult;
    /** Format the initial user message from prompt content, optionally prepending system images */
    formatUserMessage(content: PromptContent, prependImages?: ContentPart[]): TMessage;
    /** Format assistant response + tool calls for message history */
    formatAssistantMessage(content: string, toolCalls: ToolCallInfo[]): TMessage;
    /** Format tool results for history. Returns message(s) to append. */
    formatToolResults(results: ToolResultInfo[]): TMessage[];
    /** Parse HTTP response (streaming or non-streaming) into common format */
    parseResponse(response: Response, streaming: boolean, emitter: TooledPromptEmitter, chunkTimeoutMs?: number, signal?: AbortSignal): Promise<ParsedResponse>;
}
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