import { Callback, Handler } from "../handler";

export type ConnectContactFlowHandler = Handler<ConnectContactFlowEvent, ConnectContactFlowResult>;
export type ConnectContactFlowCallback = Callback<ConnectContactFlowResult>;

// Connect
// https://docs.aws.amazon.com/connect/latest/adminguide/connect-lambda-functions.html
export interface ConnectContactFlowEvent {
    Details: {
        ContactData: {
            Attributes: { [key: string]: string };
            Channel: ConnectContactFlowChannel;
            ContactId: string;
            CustomerEndpoint: ConnectContactFlowEndpoint | null;
            InitialContactId: string;
            InitiationMethod: ConnectContactFlowInitiationMethod;
            InstanceARN: string;
            PreviousContactId: string;
            Queue: ConnectContactFlowQueue | null;
            SystemEndpoint: ConnectContactFlowEndpoint | null;
            MediaStreams: {
                Customer: {
                    Audio: CustomerAudio;
                };
            };
        };
        Parameters: { [key: string]: string };
    };
    Name: "ContactFlowEvent";
}

export type ConnectContactFlowChannel = "VOICE" | "CHAT" | "EMAIL";

export type ConnectContactFlowInitiationMethod = "INBOUND" | "OUTBOUND" | "TRANSFER" | "CALLBACK" | "API";

export interface ConnectContactFlowEndpoint {
    Address: string;
    Type: "TELEPHONE_NUMBER";
}

export interface ConnectContactFlowQueue {
    ARN: string;
    Name: string;
}

export interface ConnectContactFlowResult {
    [key: string]: string | null;
}

export type CustomerAudio =
    | null // If Media Streaming has never been started.
    | StartedCustomerAudio // If Media Streaming has been started, but not stopped.
    | (StartedCustomerAudio & StoppedCustomerAudio); // If Media Streaming has been started and stopped.

export interface StartedCustomerAudio {
    StartFragmentNumber: string;
    StartTimestamp: string;
    StreamARN: string;
}

export interface StoppedCustomerAudio {
    StopFragmentNumber: string;
    StopTimestamp: string;
}