Improve code quality and add comments

frontend/src/app/Services/auth.service.ts

@@ -14,6 +14,7 @@ export class AuthService {
   constructor(private http: HttpClient) {}
 
   /**
+   * Function to login user
    * @param  {string} email
    * @param  {string} password
    * @returns Observable
@@ -26,6 +27,7 @@ export class AuthService {
   }
 
   /**
+   * Function to register user
    * @param  {string} email
    * @param  {string} username
    * @param  {string} password

frontend/src/app/Services/bot.service.ts

@@ -15,6 +15,7 @@ export class BotService {
   ) {}
 
   /**
+   * Function to get all keywords
    * @returns Observable
    */
   public getKeywords(): Observable<any> {
@@ -28,6 +29,7 @@ export class BotService {
   }
 
   /**
+   * Function to create a keyword
    * @param  {string} keyword
    * @returns Observable
    */
@@ -47,6 +49,7 @@ export class BotService {
   }
 
   /**
+   * Function to delete a keyword
    * @param  {string} keyword
    * @returns Observable
    */
@@ -63,6 +66,7 @@ export class BotService {
   }
 
   /**
+   * Function to get all shares
    * @returns Observable
    */
   public getSymbols(): Observable<any> {
@@ -76,6 +80,7 @@ export class BotService {
   }
 
   /**
+   * Function to create a share
    * @param  {string} keyword
    * @returns Observable
    */
@@ -96,6 +101,7 @@ export class BotService {
   }
 
   /**
+   * Function to delete a share
    * @param  {string} symbol
    * @returns Observable
    */

frontend/src/app/Services/data.service.ts

@@ -17,6 +17,7 @@ export class DataService {
   ) {}
 
   /**
+   * Function to get all portfolio data
    * @returns Observable
    */
   public getStockData(): Observable<any> {
@@ -30,6 +31,7 @@ export class DataService {
   }
 
   /**
+   * Function to get all transaction data
    * @returns Observable
    */
   public getTransactionData(): Observable<any> {
@@ -43,6 +45,7 @@ export class DataService {
   }
 
   /**
+   * Function to create a transaction
    * @param  {string} symbol
    * @param  {Date} time
    * @param  {number} count
@@ -77,6 +80,7 @@ export class DataService {
   }
 
   /**
+   * Function to get all keywords
    * @returns Observable
    */
   public getKeywords(): Observable<any> {

frontend/src/app/Services/profile.service.ts

@@ -15,6 +15,7 @@ export class ProfileService {
   ) {}
 
   /**
+   * Function to get all Userdata
    * @returns Observable
    */
   public getUserData(): Observable<any> {
@@ -28,6 +29,7 @@ export class ProfileService {
   }
 
   /**
+   * Function to update user profile
    * @param  {string} username
    * @param  {number} password
    * @returns Observable
@@ -49,6 +51,7 @@ export class ProfileService {
   }
 
   /**
+   * Function to add a telegram id
    * @param  {string} telegramUserID
    * @returns Observable
    */
@@ -68,6 +71,7 @@ export class ProfileService {
   }
 
   /**
+   * Function to add a cron string for automatic updates
    * @param  {string} cronString
    * @returns Observable
    */

frontend/src/app/Services/token.service.ts

@@ -8,6 +8,7 @@ export class TokenStorageService {
   constructor() {}
 
   /**
+   * Function to sign out user
    * @returns void
    */
   signOut(): void {
@@ -15,6 +16,7 @@ export class TokenStorageService {
   }
 
   /**
+   * Function to save token
    * @param  {string} token
    * @returns void
    */
@@ -24,6 +26,7 @@ export class TokenStorageService {
   }
 
   /**
+   * Function to get token
    * @returns string
    */
   public getToken(): string | null {
@@ -31,6 +34,7 @@ export class TokenStorageService {
   }
 
   /**
+   * Function to save user
    * @param  {any} user
    * @returns void
    */
@@ -40,6 +44,7 @@ export class TokenStorageService {
   }
 
   /**
+   * Function to get user
    * @returns any
    */
   public getUser(): any {