feat: add signal repository + tests

src/Types/Signal.ts

@@ -0,0 +1,68 @@
+import { proto } from '../../WAProto'
+
+type DecryptGroupSignalOpts = {
+	group: string
+	authorJid: string
+	msg: Uint8Array
+}
+
+type ProcessSenderKeyDistributionMessageOpts = {
+	item: proto.Message.ISenderKeyDistributionMessage
+	authorJid: string
+}
+
+type DecryptSignalProtoOpts = {
+	jid: string
+	type: 'pkmsg' | 'msg'
+	ciphertext: Uint8Array
+}
+
+type EncryptMessageOpts = {
+	jid: string
+	data: Uint8Array
+}
+
+type EncryptGroupMessageOpts = {
+	group: string
+	data: Uint8Array
+	meId: string
+}
+
+type PreKey = {
+	keyId: number
+	publicKey: Uint8Array
+}
+
+type SignedPreKey = PreKey & {
+	signature: Uint8Array
+}
+
+type E2ESession = {
+	registrationId: number
+	identityKey: Uint8Array
+	signedPreKey: SignedPreKey
+	preKey: PreKey
+}
+
+type E2ESessionOpts = {
+	jid: string
+	session: E2ESession
+}
+
+export type SignalRepository = {
+	decryptGroupMessage(opts: DecryptGroupSignalOpts): Promise<Uint8Array>
+	processSenderKeyDistributionMessage(
+		opts: ProcessSenderKeyDistributionMessageOpts
+	): Promise<void>
+	decryptMessage(opts: DecryptSignalProtoOpts): Promise<Uint8Array>
+	encryptMessage(opts: EncryptMessageOpts): Promise<{
+		type: 'pkmsg' | 'msg'
+		ciphertext: Uint8Array
+	}>
+	encryptGroupMessage(opts: EncryptGroupMessageOpts): Promise<{
+		senderKeyDistributionMessage: Uint8Array
+		ciphertext: Uint8Array
+	}>
+	injectE2ESession(opts: E2ESessionOpts): Promise<void>
+	jidToSignalProtocolAddress(jid: string): string
+}