Search for username in compose mode

ts/textsecure/SendMessage.ts

@@ -2043,7 +2043,7 @@ export default class MessageSender {
       profileKeyCredentialRequest?: string;
       userLanguages: ReadonlyArray<string>;
     }>
-  ): Promise<ReturnType<WebAPIType['getProfile']>> {
+  ): ReturnType<WebAPIType['getProfile']> {
     const { accessKey } = options;
 
     if (accessKey) {
@@ -2057,6 +2057,12 @@ export default class MessageSender {
     return this.server.getProfile(number, options);
   }
 
+  async getProfileForUsername(
+    username: string
+  ): ReturnType<WebAPIType['getProfileForUsername']> {
+    return this.server.getProfileForUsername(username);
+  }
+
   async getUuidsForE164s(
     numbers: ReadonlyArray<string>
   ): Promise<Dictionary<UUIDStringType | null>> {

ts/textsecure/WebAPI.ts

@@ -770,6 +770,7 @@ export type WebAPIType = {
       userLanguages: ReadonlyArray<string>;
     }
   ) => Promise<ProfileType>;
+  getProfileForUsername: (username: string) => Promise<ProfileType>;
   getProfileUnauth: (
     identifier: string,
     options: {
@@ -1077,6 +1078,7 @@ export function initialize({
       getKeysForIdentifierUnauth,
       getMyKeys,
       getProfile,
+      getProfileForUsername,
       getProfileUnauth,
       getBadgeImageFile,
       getProvisioningResource,
@@ -1385,6 +1387,12 @@ export function initialize({
       })) as ProfileType;
     }
 
+    async function getProfileForUsername(usernameToFetch: string) {
+      return getProfile(`username/${usernameToFetch}`, {
+        userLanguages: [],
+      });
+    }
+
     async function putProfile(
       jsonData: ProfileRequestDataType
     ): Promise<UploadAvatarHeadersType | undefined> {