export type Body = Record<string, string | string[] | undefined>;
export interface CallMetadata extends Body {
    Called: string;
    ToState: string;
    CallerCountry: string;
    Direction: string;
    CallerState: string;
    ToZip: string;
    CallSid: string;
    To: string;
    CallerZip: string;
    ToCountry: string;
    CallToken: string;
    CalledZip: string;
    ApiVersion: string;
    CalledCity: string;
    CallStatus: string;
    From: string;
    AccountSid: string;
    CalledCountry: string;
    CallerCity: string;
    ToCity: string;
    FromCountry: string;
    Caller: string;
    FromCity: string;
    CalledState: string;
    FromZip: string;
    FromState: string;
}
export declare const isCallMetadata: (message: Body) => message is CallMetadata;
export interface RecordingStatus extends Body {
    RecordingSource: string;
    RecordingTrack: string;
    RecordingSid: string;
    RecordingUrl: string;
    RecordingStatus: string;
    RecordingChannels: string;
    ErrorCode: string;
    CallSid: string;
    RecordingStartTime: string;
    AccountSid: string;
    RecordingDuration: string;
}
export declare const isRecordingStatus: (message: Body) => message is RecordingStatus;
export interface TranscriptStatus extends Body {
    LanguageCode: string;
    TranscriptionSid: string;
    TranscriptionEvent: string;
    CallSid: string;
    TranscriptionData: string;
    Timestamp: string;
    Final: string;
    AccountSid: string;
    Track: string;
    SequenceId: string;
}
export declare const isTranscriptStatus: (message: Body) => message is TranscriptStatus;
export interface WebSocketMessage {
    event: "start" | "media" | "stop" | "mark";
}
export interface StartWebSocketMessage extends WebSocketMessage {
    event: "start";
    start: {
        accountSid: string;
        streamSid: string;
        callSid: string;
        tracks: string[];
        mediaFormat: {
            channels: number;
            encoding: string;
            sampleRate: number;
        };
        customParameters: unknown;
    };
    streamSid: string;
}
export declare const isStartWebSocketMessage: (message: WebSocketMessage) => message is StartWebSocketMessage;
export interface MediaWebSocketMessage extends WebSocketMessage {
    event: "media";
    media: {
        track: string;
        chunk: string;
        timestamp: string;
        payload: string;
    };
    streamSid: string;
}
export declare const isMediaWebSocketMessage: (message: WebSocketMessage) => message is MediaWebSocketMessage;
export interface StopWebSocketMessage extends WebSocketMessage {
    event: "stop";
}
export declare const isStopWebSocketMessage: (message: WebSocketMessage) => message is StopWebSocketMessage;
export interface MarkWebSocketMessage extends WebSocketMessage {
    event: "mark";
    sequenceNumber: string;
    streamSid: string;
    mark: {
        name: string;
    };
}
export declare const isMarkWebSocketMessage: (message: WebSocketMessage) => message is MarkWebSocketMessage;
export type TwilioMetadata = Partial<StartWebSocketMessage> & Partial<CallMetadata>;