import { type AIProviderName } from "../../constants/enums.js";
import { BaseProvider } from "../../core/baseProvider.js";
import type { AnthropicProviderConfig, StreamOptions, StreamResult, ValidationSchema, EnhancedGenerateResult, TextGenerationOptions, AnthropicAuthMethod, AnthropicRateLimitInfo, AnthropicResponseMetadata, ClaudeSubscriptionTier, ClaudeUsageInfo } from "../../types/index.js";
import type { LanguageModel } from "../../types/index.js";
/**
 * Anthropic Provider v2 - BaseProvider Implementation
 * Enhanced with OAuth support, subscription tiers, and beta headers for Claude Code integration.
 */
export declare class AnthropicProvider extends BaseProvider {
    private client;
    private readonly authMethod;
    private readonly subscriptionTier;
    private readonly enableBetaFeatures;
    /**
     * Where requests go when not to `api.anthropic.com`: the credentials'
     * `baseURL`, else the config's, else `ANTHROPIC_BASE_URL` — normalized once
     * (no trailing slash, no `/vN` suffix: the SDK appends `/v1` itself).
     * Undefined means the vendor's own endpoint; every "proxy in use" decision
     * reads this, never the environment directly, so a per-instance gateway is
     * honoured the same way the environment one always was.
     */
    private readonly baseURL;
    private oauthToken;
    private lastResponseMetadata;
    private usageInfo;
    private refreshPromise?;
    /**
     * Create a new Anthropic provider instance.
     *
     * @param modelName - Optional model name to use (defaults to CLAUDE_3_5_SONNET)
     * @param sdk - Optional NeuroLink SDK instance
     * @param config - Optional configuration options for auth, subscription tier, and beta features
     */
    constructor(modelName?: string, sdk?: unknown, config?: AnthropicProviderConfig, credentials?: {
        apiKey?: string;
        oauthToken?: string;
        baseURL?: string;
    });
    /**
     * Get authentication headers based on current auth method and configuration.
     *
     * @returns Headers object containing auth and beta feature headers
     */
    getAuthHeaders(): Record<string, string>;
    /**
     * Validate if a model is accessible with the current subscription tier.
     *
     * @param model - The model ID to validate
     * @returns true if the model is accessible, false otherwise
     *
     * @example
     * ```typescript
     * const provider = new AnthropicProvider();
     * if (provider.validateModelAccess("claude-opus-4-5-20251101")) {
     *   // Use the model
     * } else {
     *   // Fall back to a different model or show upgrade prompt
     * }
     * ```
     */
    validateModelAccess(model: string): boolean;
    /**
     * Get current usage information.
     *
     * Returns usage tracking data including messages sent, tokens consumed,
     * and remaining quotas. This information is updated after each API request.
     *
     * @returns Current usage info or null if no requests have been made
     *
     * @example
     * ```typescript
     * const usage = provider.getUsageInfo();
     * if (usage && usage.tokenQuotaPercent > 80) {
     *   console.warn("Approaching token quota limit");
     * }
     * ```
     */
    getUsageInfo(): ClaudeUsageInfo | null;
    /**
     * Check if beta features are enabled for this provider instance.
     *
     * @returns true if beta features are enabled
     */
    areBetaFeaturesEnabled(): boolean;
    /**
     * Get model capabilities for the current model.
     *
     * @returns The model capabilities or undefined if not found
     */
    getModelCapabilities(): import("../../index.js").AnthropicModelMetadata | undefined;
    /**
     * Get the current subscription tier.
     * @returns The detected or configured subscription tier
     */
    getSubscriptionTier(): ClaudeSubscriptionTier;
    /**
     * Get the authentication method being used.
     * @returns The current authentication method
     */
    getAuthMethod(): AnthropicAuthMethod;
    /**
     * Refresh OAuth token if needed and possible.
     * This method checks if the token is expired or about to expire,
     * and attempts to refresh it using the refresh token if available.
     *
     * @returns Promise that resolves when refresh is complete (or not needed)
     * @throws Error if refresh is needed but fails
     */
    refreshAuthIfNeeded(): Promise<void>;
    /**
     * Get the last response metadata including rate limit information.
     * @returns The last response metadata or null if no request has been made
     */
    getLastResponseMetadata(): AnthropicResponseMetadata | null;
    /**
     * Update response metadata from a captured limit snapshot.
     *
     * Takes already-parsed rate-limit info rather than raw headers: parsing now
     * lives in `rateLimitCapture`, which is the only layer that sees the raw
     * response and understands both header families (unified subscription
     * windows and legacy per-tier counters).
     *
     * @param rateLimit - Parsed rate-limit figures
     * @param requestId - Optional Anthropic request ID
     * @param usageUpdate - Optional token counts to fold into usage tracking
     */
    protected updateResponseMetadata(rateLimit: AnthropicRateLimitInfo, requestId?: string, usageUpdate?: {
        inputTokens?: number;
        outputTokens?: number;
    }): void;
    getProviderName(): AIProviderName;
    getDefaultModel(): string;
    /**
     * Returns a V3-shaped delegating model whose `doGenerate` drives the
     * official Anthropic Messages API directly. BaseProvider's `generate()`
     * path (and its middleware wrapping) keeps working unchanged; the
     * streaming path bypasses this entirely via `executeStream`.
     */
    getAISDKModel(): LanguageModel;
    protected formatProviderError(error: unknown): Error;
    /**
     * Override generate to refresh the OAuth token before delegating to
     * BaseProvider so that expired tokens are renewed automatically.
     */
    generate(optionsOrPrompt: TextGenerationOptions | string, analysisSchema?: ValidationSchema): Promise<EnhancedGenerateResult | null>;
    /**
     * Text turns run natively; every other request kind still goes to
     * BaseProvider.generate().
     *
     * The loop runs over this provider's own delegating-model `doGenerate`,
     * which issues a NON-streaming `messages.create`. That matters: the streaming
     * loop adapter hardcodes `stream: true`, and an earlier attempt that routed
     * generate through it silently changed the wire.
     */
    private dispatchGenerate;
    private executeNativeGenerate;
    /**
     * Fold a captured snapshot into the provider's usage bookkeeping and log it.
     *
     * `updateResponseMetadata` had no callers before this — the metadata it
     * maintains, and the public `getLastResponseMetadata()` / `getUsageInfo()`
     * that read it, were never populated by anything.
     */
    private recordLimitSnapshot;
    /**
     * The native stream loop below is the one implementation of the
     * `executionControl` contract: it arms the lifetime policy, hands the
     * per-request deadline and the terminal-event requirement to the loop
     * adapter, and runs the step-boundary callback through the engine. Every
     * other provider rejects the option rather than ignoring it.
     */
    supportsExecutionControl(): boolean;
    protected executeStream(options: StreamOptions, analysisSchema?: ValidationSchema): Promise<StreamResult>;
    private executeStreamInCaptureScope;
    isAvailable(): Promise<boolean>;
    getModel(): LanguageModel;
}
export { getModelCapabilities, getRecommendedModelForTier, isModelAvailableForTier, ModelAccessError, } from "../../models/anthropicModels.js";