import type { Api, AuthCheck, CredentialInfo, Model } from "@bastani/pi-ai";
import type { AuthStatus } from "./provider-composer.ts";
export interface ModelRuntimeSnapshot {
    all: readonly Model<Api>[];
    available: readonly Model<Api>[];
    configuredProviders: ReadonlySet<string>;
    storedProviders: ReadonlySet<string>;
    storedCredentialTypes: ReadonlyMap<string, CredentialInfo["type"]>;
    auth: ReadonlyMap<string, AuthCheck | undefined>;
}
export declare function createEmptyModelRuntimeSnapshot(): ModelRuntimeSnapshot;
export declare function createModelRuntimeSnapshot(all: readonly Model<Api>[], available: readonly Model<Api>[], checks: readonly (readonly [string, AuthCheck | undefined])[], credentials: readonly CredentialInfo[]): ModelRuntimeSnapshot;
/** Identity of a model inside an availability projection. */
export declare function snapshotModelKey(model: Model<Api>): string;
/**
 * Republish the model list without disturbing availability. Availability is a
 * per-model fact — a credential can entitle an account to a subset of a
 * provider's catalog — so it is carried over by model ID rather than recomputed
 * from the provider's configured status, which would widen a filtered provider
 * back to its whole catalog until the next availability pass lands. A provider
 * whose filtered result is empty stays empty for the same reason.
 */
export declare function updateSnapshotModels(snapshot: ModelRuntimeSnapshot, all: readonly Model<Api>[]): ModelRuntimeSnapshot;
export declare function addRuntimeApiKeyProvider(snapshot: ModelRuntimeSnapshot, providerId: string): ModelRuntimeSnapshot;
export declare function addStoredCredentialProvider(snapshot: ModelRuntimeSnapshot, providerId: string, type: CredentialInfo["type"]): ModelRuntimeSnapshot;
export declare function replaceStoredCredentialProviders(snapshot: ModelRuntimeSnapshot, credentials: readonly CredentialInfo[]): ModelRuntimeSnapshot;
export declare function removeStoredCredentialProvider(snapshot: ModelRuntimeSnapshot, providerId: string, remainingAuth?: AuthCheck): ModelRuntimeSnapshot;
export declare function getSnapshotProviderAuthStatus(snapshot: ModelRuntimeSnapshot, providerId: string, hasRuntimeApiKey: boolean, configured: AuthStatus | undefined): AuthStatus;
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