import type { Agent } from "@caupulican/pi-agent-core/agent";
import { type ClassifiedError, classifyFailure } from "@caupulican/pi-agent-core/reliability";
import type { AssistantMessage } from "@caupulican/pi-ai";
import type { ModelRegistry } from "./model-registry.ts";
import type { ModelRouterFailoverStatus } from "./model-router/status.ts";
export declare class ExhaustedProviderRegistry {
    private readonly exhausted;
    markExhausted(ref: string, until?: number): void;
    isExhausted(ref: string): boolean;
    snapshot(): string[];
}
export interface BillingFailoverControllerDeps {
    agent: Agent;
    modelRegistry: ModelRegistry;
    emit(event: {
        type: "warning";
        message: string;
    }): void;
    exhausted: ExhaustedProviderRegistry;
    subscriptionHop?: boolean;
    recordFailure?(args: {
        provider?: string;
        modelId?: string;
        message: string;
        classified: ReturnType<typeof classifyFailure>;
    }): void;
}
export declare class BillingFailoverController {
    private readonly deps;
    private lastNotice;
    constructor(deps: BillingFailoverControllerDeps);
    isExhausted(ref: string): boolean;
    snapshotExhausted(): string[];
    getLastNotice(): string | undefined;
    getStatus(): ModelRouterFailoverStatus;
    handleAssistantError(message: AssistantMessage, classified?: ClassifiedError): Promise<boolean>;
}
//# sourceMappingURL=billing-failover-controller.d.ts.map