Add automatic fetching of SinusBot's default bot ID

backend/src/services/sinusbot.service.ts

@@ -7,18 +7,21 @@ import fetch from 'node-fetch';
 @Injectable()
 export class SinusBotService {
   private host = process.env.HOST
-  private botInfo = {
-    id: process.env.SINUSBOT_BOTID,
-    instanceId: null
-  }
-
-  private tunaKillURL = `${this.host}/api/v1/bot/i/${this.botInfo.instanceId}/event/tunakill_rank_all_user`;
-  private loginURL = `${this.host}/api/v1/bot/login`;
   private credentials = {
     username: process.env.SINUSBOT_USER,
     password: process.env.SINUSBOT_PASSWORD
   }
-  private bearer?: string;
+
+  private botInfo = {
+    id: undefined,
+    instanceId: process.env.SINUSBOT_INSTANCEID
+  }
+
+  private botIdURL = `${this.host}/api/v1/botId`;
+  private tunaKillURL = `${this.host}/api/v1/bot/i/${this.botInfo.instanceId}/event/tunakill_rank_all_user`;
+  private loginURL = `${this.host}/api/v1/bot/login`;
+
+  private bearer: string;
 
   public async fetchStats(): Promise<TableEntry[]> {
     if (this.bearer == null) {
@@ -35,7 +38,7 @@ export class SinusBotService {
     console.log(`I try to fetch user data now!`)
     return await fetch(this.tunaKillURL, this.requestConfig(null, this.bearer))
       .then(res => this.checkStatus(res))
-      .then(data => data.json())
+      .then(res => res.json())
       .then(data => this.consumeTunakillResponse(data))
       .catch(error => {
         throw this.createHttpException(HttpStatus.UNAUTHORIZED, error.message);
@@ -46,6 +49,19 @@ export class SinusBotService {
    * Returns bearer token if login was successful
    */
   private async login(): Promise<string> {
+    if (this.botInfo.id == null) {
+      console.log(`I have to fetch a bot ID before I can continue!`);
+      await this.fetchDefaultBotId()
+        .then(defaultBotId => this.botInfo.id = defaultBotId)
+        .catch(() => {
+          throw this.createHttpException(
+            HttpStatus.NOT_FOUND,
+            `Could not fetch enough bot information for further requests.`
+          );
+        });
+      console.log(`Looks like everything went fine. The bot ID now is ${this.botInfo.id}`);
+    }
+
     const body: TunakillLogin = {
       username: this.credentials.username,
       password: this.credentials.password,
@@ -55,10 +71,17 @@ export class SinusBotService {
     console.log(`> I try to login now! My credentials are: ${JSON.stringify(body)}`)
     return await fetch(this.loginURL, this.requestConfig(JSON.stringify(body)))
       .then(res => this.checkStatus(res))
-      .then(data => data.json())
+      .then(res => res.json())
       .then(data => data.token);
   }
 
+  private async fetchDefaultBotId(): Promise<string> {
+    return await fetch(this.botIdURL)
+      .then(res => this.checkStatus(res))
+      .then(res => res.json())
+      .then(data => data.defaultBotId);
+  }
+
   private consumeTunakillResponse(data: any): TableEntry[] {
     if (!(data !== null || data[0] !== null || data[0].data !== null)) {
       throw Error('Response from SinusBot does not have any data to parse.')