/**
 * Copyright 2025 Vybestack LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @plan PLAN-20250120-DEBUGLOGGING.P15
 * @requirement REQ-INT-001.1
 */
import OpenAI from 'openai';
import { type IContent } from '../../services/history/IContent.js';
import { type IProviderConfig } from '../types/IProviderConfig.js';
import { BaseProvider, type NormalizedGenerateChatOptions } from '../BaseProvider.js';
import { type OAuthManager } from '../../auth/precedence.js';
import { type IModel } from '../IModel.js';
import { type IProvider } from '../IProvider.js';
export declare class OpenAIProvider extends BaseProvider implements IProvider {
    private readonly textToolParser;
    private readonly toolCallPipeline;
    private readonly toolCallProcessingMode;
    private getLogger;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-003
     * Constructor reduced to minimal initialization - no state captured
     */
    constructor(apiKey: string | undefined, baseURL?: string, config?: IProviderConfig, oauthManager?: OAuthManager);
    /**
     * Create HTTP/HTTPS agents with socket configuration for local AI servers
     * Returns undefined if no socket settings are configured
     *
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-003
     * Now sources ephemeral settings from call options instead of provider config
     */
    private createHttpAgents;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-002
     * Extract model parameters from normalized options instead of settings service
     */
    private extractModelParamsFromOptions;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-003
     * Resolve runtime key from normalized options for client scoping
     */
    private resolveRuntimeKey;
    /**
     * Tool formatter instances cannot be shared between stateless calls,
     * so construct a fresh one for every invocation.
     *
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-003
     */
    private createToolFormatter;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P09
     * @requirement:REQ-SP4-002
     * Instantiates a fresh OpenAI client per call to preserve stateless behaviour.
     */
    private instantiateClient;
    /**
     * Coerce provider "content" (which may be a string or an array-of-parts)
     * into a plain string. Defensive for OpenAI-compatible providers that emit
     * structured content blocks.
     */
    private coerceMessageContentToString;
    /**
     * Sanitize raw tool argument payloads before JSON parsing:
     * - Remove thinking blocks (<think>...</think>, etc.).
     * - Strip Markdown code fences (```json ... ```).
     * - Try to isolate the main JSON object if wrapped in prose.
     */
    private sanitizeToolArgumentsString;
    /**
     * Parse Kimi-K2 `<|tool_calls_section_begin|> ... <|tool_calls_section_end|>`
     * blocks out of a text string.
     *
     * - Returns cleanedText with the whole section removed.
     * - Returns ToolCallBlock[] constructed from the section contents.
     *
     * This is used for HF/vLLM-style Kimi deployments where `tool_calls` is empty
     * and all tool info is only encoded in the text template.
     */
    private extractKimiToolCallsFromText;
    /**
     * Clean Kimi K2 tool call tokens from thinking content.
     * Used when extracting thinking from <think> tags that may contain embedded tool calls.
     * @issue #749
     */
    private cleanThinkingContent;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P09
     * @requirement:REQ-SP4-002
     * @requirement:REQ-LOCAL-001
     * Creates a client scoped to the active runtime metadata without caching.
     * Local endpoints (localhost, private IPs) are allowed without authentication
     * to support local AI servers like Ollama.
     */
    private mergeInvocationHeaders;
    protected getClient(options: NormalizedGenerateChatOptions): Promise<OpenAI>;
    /**
     * Check if OAuth is supported for this provider
     * Qwen endpoints support OAuth, standard OpenAI does not
     */
    protected supportsOAuth(): boolean;
    getModels(): Promise<IModel[]>;
    private getFallbackModels;
    getDefaultModel(): string;
    /**
     * Get the currently selected model
     */
    getCurrentModel(): string;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P09
     * @requirement:REQ-SP4-002
     * No-op retained for compatibility because clients are no longer cached.
     */
    clearClientCache(runtimeKey?: string): void;
    /**
     * Override isAuthenticated for qwen provider to check OAuth directly
     */
    isAuthenticated(): Promise<boolean>;
    /**
     * Clear all provider state (for provider switching)
     * Clears both OpenAI client cache and auth token cache
     */
    clearState(): void;
    getServerTools(): string[];
    invokeServerTool(toolName: string, _params: unknown, _config?: unknown, _signal?: AbortSignal): Promise<unknown>;
    /**
     * @plan PLAN-20250218-STATELESSPROVIDER.P04
     * @requirement REQ-SP-001
     * @pseudocode base-provider.md lines 7-15
     * @pseudocode provider-invocation.md lines 8-12
     */
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P09
     * @requirement:REQ-SP4-002
     * Generate chat completion with per-call client instantiation.
     */
    protected generateChatCompletionWithOptions(options: NormalizedGenerateChatOptions): AsyncIterableIterator<IContent>;
    private normalizeToolCallArguments;
    private buildToolResponseContent;
    /**
     * Build messages with optional reasoning_content based on settings.
     *
     * @plan PLAN-20251202-THINKING.P14
     * @requirement REQ-THINK-004, REQ-THINK-006
     */
    private buildMessagesWithReasoning;
    /**
     * Validates tool message sequence to ensure each tool message has a corresponding tool_calls
     * This prevents "messages with role 'tool' must be a response to a preceeding message with 'tool_calls'" errors
     *
     * Only validates when there are tool_calls present in conversation to avoid breaking isolated tool response tests
     *
     * @param messages - The converted OpenAI messages to validate
     * @returns The validated messages with invalid tool messages removed
     */
    private validateToolMessageSequence;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-003
     * Legacy implementation for chat completion using accumulated tool calls approach
     */
    private generateLegacyChatCompletionImpl;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-002
     * Memoization of model parameters disabled for stateless provider
     */
    setModelParams(_params: Record<string, unknown> | undefined): void;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-003
     * Gets model parameters from SettingsService per call (stateless)
     */
    getModelParams(): Record<string, unknown> | undefined;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-003
     * Internal implementation for chat completion using normalized options
     * Routes to appropriate implementation based on toolCallProcessingMode
     */
    private generateChatCompletionImpl;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-003
     * Pipeline implementation for chat completion using optimized tool call pipeline
     */
    private generatePipelineChatCompletionImpl;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-003
     * Legacy implementation for chat completion using accumulated tool calls approach
     */
    getToolFormat(): string;
    /**
     * Parse tool response from API (placeholder for future response parsing)
     * @param response The raw API response
     * @returns Parsed tool response
     */
    parseToolResponse(response: unknown): unknown;
    /**
     * @plan:PLAN-20251023-STATELESS-HARDENING.P08
     * @requirement:REQ-SP4-003
     * Determines whether a response should be retried based on error codes
     * @param error The error object from the API response
     * @returns true if the request should be retried, false otherwise
     */
    shouldRetryResponse(error: unknown): boolean;
    /**
     * Parse reasoning_content from streaming delta.
     *
     * @plan PLAN-20251202-THINKING.P11, PLAN-20251202-THINKING.P16
     * @requirement REQ-THINK-003.1, REQ-THINK-003.3, REQ-THINK-003.4, REQ-KIMI-REASONING-001.1
     * @issue #749
     */
    private parseStreamingReasoningDelta;
    /**
     * Parse reasoning_content from non-streaming message.
     *
     * @plan PLAN-20251202-THINKING.P11, PLAN-20251202-THINKING.P16
     * @requirement REQ-THINK-003.2, REQ-THINK-003.3, REQ-THINK-003.4, REQ-KIMI-REASONING-001.2
     * @issue #749
     */
    private parseNonStreamingReasoning;
    private buildContinuationMessages;
    /**
     * Request continuation after tool calls when model returned no text.
     * This is a helper to avoid code duplication between legacy and pipeline paths.
     *
     * @plan PLAN-20250120-DEBUGLOGGING.P15
     * @issue #584, #764 (CodeRabbit review)
     */
    private requestContinuationAfterToolCalls;
}