export interface ISignalBundleObject {
   identityKey: ArrayBuffer;
   registrationId: number;
   preKey: {
      keyId: number;
      publicKey: ArrayBuffer;
   };
   signedPreKey: {
      keyId: number;
      publicKey: ArrayBuffer;
      signature: string | ArrayBuffer;
   };
}

interface ISignalPreKey {
   keyId: number;

   keyPair: ISignalKeyPair;
}

interface ISignalSignedPreKey extends ISignalPreKey {
   signature: ArrayBuffer;
}

interface ISignalKeyPair {
   privKey?: ArrayBuffer;

   pubKey: ArrayBuffer;
}

interface ISignalKeyHelper {
   generatePreKey: (keyId: number) => Promise<ISignalPreKey>;

   generateSignedPreKey: (identityKeyPair: ISignalKeyPair, signedKeyId: number) => Promise<ISignalSignedPreKey>;

   generateIdentityKeyPair: () => Promise<ISignalKeyPair>;

   generateRegistrationId: () => number;
}

let libsignal = (<any>window).libsignal || {};

export let SignalAddress = libsignal.SignalProtocolAddress;
export let SignalKeyHelper: ISignalKeyHelper = libsignal.KeyHelper;
export let SignalSessionBuilder = libsignal.SessionBuilder;
export let SignalSessionCipher = libsignal.SessionCipher;
export let SignalFingerprintGenerator = libsignal.FingerprintGenerator;