import type { CallEndReason, CallMetadata } from "../ExpoVicallCallManager.types";
/**
 * Responsibilities owned exclusively by this Expo native module.
 * Backend services and media SDKs must not re-implement these concerns.
 */
export declare const MODULE_RESPONSIBILITIES: readonly ["system_incoming_ui", "system_outgoing_ui", "voip_push_registration_ios", "fcm_call_interception_android", "call_event_buffering_before_js", "system_picture_in_picture_api", "call_foreground_service_android"];
/**
 * Responsibilities owned by the backend / edge Worker that talks to the app.
 * These stay outside the React Native module boundary.
 */
export declare const SERVICE_RESPONSIBILITIES: readonly ["create_call_record", "create_media_meeting", "send_ios_voip_push", "send_android_fcm_call_data", "mint_media_token_after_answer", "cancel_or_answered_elsewhere_signaling", "durable_call_state"];
/**
 * Responsibilities owned by the React Native application host.
 * In-call screens, video layout, and chrome are intentionally host-owned
 * (X / social-network style). This module does not ship a required call UI.
 */
export declare const APP_RESPONSIBILITIES: readonly ["subscribe_native_call_events", "present_host_owned_in_call_ui", "fetch_media_credentials_after_answer", "join_leave_media_session", "bind_media_tracks_to_host_video_views", "register_push_tokens_with_backend"];
export type ModuleResponsibility = (typeof MODULE_RESPONSIBILITIES)[number];
export type ServiceResponsibility = (typeof SERVICE_RESPONSIBILITIES)[number];
export type AppResponsibility = (typeof APP_RESPONSIBILITIES)[number];
/**
 * Direction of each native call event relative to the JS runtime.
 * - native_to_js: system UI / telecom / push produced the event
 * - js_to_native: app asked the module to mutate native call state
 * - bidirectional: either side may originate the same event type
 */
export declare const CALL_EVENT_OWNERSHIP: {
    readonly answer: "native_to_js";
    readonly end: "bidirectional";
    readonly start: "bidirectional";
    readonly mute: "bidirectional";
    readonly hold: "bidirectional";
    readonly dtmf: "native_to_js";
    readonly audioSessionActivated: "native_to_js";
    readonly audioSessionDeactivated: "native_to_js";
    readonly audioRouteChanged: "native_to_js";
    readonly incomingCallDisplayed: "native_to_js";
    readonly incomingCallFailed: "native_to_js";
    readonly providerReset: "native_to_js";
    readonly showIncomingCallUi: "native_to_js";
    readonly voipTokenUpdated: "native_to_js";
    readonly voipTokenInvalidated: "native_to_js";
};
export declare const ANDROID_FCM_VICALL_TYPES: {
    readonly incomingCall: "incoming_call";
    readonly cancelCall: "cancel_call";
};
export type AndroidFcmVicallType = (typeof ANDROID_FCM_VICALL_TYPES)[keyof typeof ANDROID_FCM_VICALL_TYPES];
/** Fields shared by every verified call identity crossing service ↔ native ↔ JS. */
export interface ServiceCallIdentity {
    /**
     * Stable RFC 4122 UUID. Reuse the same value for:
     * durable call records, native CallKit/Telecom UUIDs, push payloads,
     * and media-meeting orchestration keys.
     */
    callId: string;
    /** Stable callee/caller handle shown to the OS (user id, phone, or email). */
    handle: string;
    /** Human-readable name for system call UI. */
    displayName: string;
    /** When true, system UI advertises a video call. */
    hasVideo: boolean;
    /** Opaque service metadata echoed back on native events. Keep values JSON-safe. */
    metadata: CallMetadata;
}
export interface AndroidIncomingCallData extends ServiceCallIdentity {
}
export interface AndroidCancelCallData {
    callId: string;
    reason: CallEndReason;
}
export interface IosVoipPushPayload extends ServiceCallIdentity {
}
export declare class ServiceProtocolError extends Error {
    readonly code: string;
    constructor(code: string, message: string);
}
export declare function validateCallId(value: unknown): string;
/**
 * Validates Android FCM `data` for `vicallType=incoming_call`.
 * All FCM data values arrive as strings; this normalizes them for app/service tests.
 */
export declare function parseAndroidIncomingCallData(data: unknown): AndroidIncomingCallData;
/**
 * Validates Android FCM `data` for `vicallType=cancel_call`.
 */
export declare function parseAndroidCancelCallData(data: unknown): AndroidCancelCallData;
/**
 * Validates the JSON body a backend service should send through APNs VoIP push.
 * Native PushKit reports this payload to CallKit before JS boots.
 */
export declare function parseIosVoipPushPayload(payload: unknown): IosVoipPushPayload;
/**
 * Builds the Android FCM data map a backend should send (all values strings).
 */
export declare function buildAndroidIncomingCallFcmData(call: ServiceCallIdentity): Record<string, string>;
/**
 * Builds the Android FCM cancel payload a backend should send.
 */
export declare function buildAndroidCancelCallFcmData(callId: string, reason?: CallEndReason): Record<string, string>;
/**
 * Builds the APNs VoIP JSON body a backend should send.
 */
export declare function buildIosVoipPushPayload(call: ServiceCallIdentity): Record<string, unknown>;
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