import type { Api, Model } from '@earendil-works/pi-ai';
import type { ModelSwitchSection } from './config.js';
export type CycleDirection = 'forward' | 'backward';
export interface ModelReference {
    provider: string;
    modelId: string;
}
export interface ModelRegistryLike {
    find(provider: string, modelId: string): Model<Api> | undefined;
    getApiKeyAndHeaders(model: Model<Api>): Promise<{
        ok: true;
        apiKey?: string;
        headers?: Record<string, string | null>;
    } | {
        ok: false;
        error: string;
    }>;
}
export declare function parseModelReference(value: string): ModelReference | undefined;
export declare function resolveAvailableModels(references: readonly string[], registry: ModelRegistryLike): Promise<Model<Api>[]>;
export declare function findActiveSection(sections: readonly ModelSwitchSection[], current: Model<Api> | undefined): ModelSwitchSection | undefined;
export declare function selectCycleTarget(current: Model<Api> | undefined, available: readonly Model<Api>[], direction: CycleDirection): Model<Api> | undefined;