Prepare max balance call

Breeze.UI/src/app/shared/services/api.service.ts

@@ -168,6 +168,23 @@ export class ApiService {
         .map((response: Response) => response);
     }
 
+    /**
+     * Get the maximum sendable amount for a given fee from the API
+     */
+    getMaximumBalance(data): Observable<any> {
+      this.getCurrentCoin();
+
+      let params: URLSearchParams = new URLSearchParams();
+      params.set('walletName', data.walletName);
+      params.set('accountName', "account 0");
+      params.set('feeType', data.feeType);
+      params.set('allowUnconfirmed', "true");
+
+      return this.http
+        .get(this.currentApiUrl + '/wallet/maxbalance', new RequestOptions({headers: this.headers, search: params}))
+        .map((response: Response) => response);
+    }
+
     /**
      * Get a wallets transaction history info from the API.
      */

Breeze.UI/src/app/wallet/send/send.component.html

@@ -9,8 +9,8 @@
         <form [formGroup]="sendForm" (ngSubmit)="send()">
           <!--<div class="form-group has-danger clearfix">-->
             <div class="form-group clearfix">
-            <label class="float-left" for="yourAddress">Amount</label>
-            <!--<span class="float-right"><a href="#">max</a></span>-->
+            <label class="float-left" for="Amount">Amount</label>
+            <!-- <span class="float-right btn-link" (click)="getMaxBalance()">max</span> -->
             <input type="text" class="form-control form-control-danger" formControlName="amount" id="Amount" placeholder="0.00 {{ coinUnit }}">
             <div *ngIf="formErrors.amount" class="form-control-feedback">{{ formErrors.amount }}</div>
           </div>

Breeze.UI/src/app/wallet/send/send.component.ts

@@ -86,6 +86,43 @@ export class SendComponent implements OnInit {
     }
   };
 
+  public getMaxBalance() {
+    let data = {
+      walletName: this.globalService.getWalletName(),
+      feeType: this.sendForm.get("fee").value
+    }
+
+    let balanceResponse;
+
+    this.apiService
+      .getMaximumBalance(data)
+      .subscribe(
+        response => {
+          if (response.status >= 200 && response.status < 400){
+            balanceResponse = response.json();
+            console.log(balanceResponse);
+          }
+        },
+        error => {
+          console.log(error);
+          if (error.status === 0) {
+            alert("Something went wrong while connecting to the API. Please restart the application.");
+          } else if (error.status >= 400) {
+            if (!error.json().errors[0]) {
+              console.log(error);
+            }
+            else {
+              alert(error.json().errors[0].description);
+            }
+          }
+        },
+        () => {
+          this.sendForm.patchValue({amount: balanceResponse.maxSpendableAmount});
+          this.estimatedFee = balanceResponse.fee;
+        }
+      )
+  };
+
   public buildTransaction() {
     this.transaction = new TransactionBuilding(
       this.globalService.getWalletName(),