add branch validation to queue

asf-cloud-server/testarena_1/app/templates/jobs/submit.html

@@ -29,7 +29,7 @@
         </div>
     </div>
     
-    <form method="POST" action="{{ url_for('jobs.submit_step1') }}">
+    <form id="branchForm">
         <div class="form-group">
             <label for="branch_name">Git Branch Name</label>
             <input type="text" id="branch_name" name="branch_name" class="form-control" 
@@ -37,12 +37,132 @@
             <small style="color: #6b7280; margin-top: 5px; display: block;">
                 Enter the branch name to analyze available test scenarios
             </small>
+            
+            <div id="branchValidation" class="branch-validation">
+                <div class="loading-spinner"></div>
+                <span id="validationMessage">Validating branch...</span>
+            </div>
         </div>
         
         <div class="form-actions">
             <a href="{{ url_for('dashboard.index') }}" class="btn" style="background: #6b7280; color: white;">Cancel</a>
-            <button type="submit" class="btn btn-primary">Next</button>
+            <button type="submit" id="validateBtn" class="btn btn-primary">Validate Branch</button>
+            <button type="button" id="nextBtn" class="btn btn-primary" style="display: none;" onclick="proceedToStep2()">Next</button>
         </div>
     </form>
 </div>
+
+<script>
+let validatedBranch = null;
+let availableScenarios = [];
+
+document.getElementById('branchForm').addEventListener('submit', function(e) {
+    e.preventDefault();
+    validateBranch();
+});
+
+function validateBranch() {
+    const branchName = document.getElementById('branch_name').value.trim();
+    
+    if (!branchName) {
+        alert('Please enter a branch name');
+        return;
+    }
+    
+    // Show loading state
+    const validation = document.getElementById('branchValidation');
+    const message = document.getElementById('validationMessage');
+    const validateBtn = document.getElementById('validateBtn');
+    const nextBtn = document.getElementById('nextBtn');
+    
+    validation.className = 'branch-validation loading';
+    validation.style.display = 'block';
+    message.textContent = 'Validating branch...';
+    validateBtn.disabled = true;
+    nextBtn.style.display = 'none';
+    
+    // Make AJAX request
+    fetch('/jobs/submit/step1', {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/x-www-form-urlencoded',
+        },
+        body: `branch_name=${encodeURIComponent(branchName)}`
+    })
+    .then(response => response.json())
+    .then(data => {
+        if (data.success) {
+            // Success
+            validation.className = 'branch-validation success';
+            message.textContent = data.message;
+            validateBtn.style.display = 'none';
+            nextBtn.style.display = 'inline-block';
+            
+            validatedBranch = branchName;
+            availableScenarios = data.scenarios;
+        } else {
+            // Error
+            validation.className = 'branch-validation error';
+            message.textContent = data.error;
+            validateBtn.disabled = false;
+            nextBtn.style.display = 'none';
+            
+            validatedBranch = null;
+            availableScenarios = [];
+        }
+    })
+    .catch(error => {
+        // Network error
+        validation.className = 'branch-validation error';
+        message.textContent = 'Network error. Please try again.';
+        validateBtn.disabled = false;
+        nextBtn.style.display = 'none';
+        
+        validatedBranch = null;
+        availableScenarios = [];
+    });
+}
+
+function proceedToStep2() {
+    if (!validatedBranch || !availableScenarios.length) {
+        alert('Please validate the branch first');
+        return;
+    }
+    
+    // Create form to submit to step 2
+    const form = document.createElement('form');
+    form.method = 'POST';
+    form.action = '/jobs/submit/step2-validated';
+    
+    const branchInput = document.createElement('input');
+    branchInput.type = 'hidden';
+    branchInput.name = 'branch_name';
+    branchInput.value = validatedBranch;
+    form.appendChild(branchInput);
+    
+    const scenariosInput = document.createElement('input');
+    scenariosInput.type = 'hidden';
+    scenariosInput.name = 'scenarios';
+    scenariosInput.value = JSON.stringify(availableScenarios);
+    form.appendChild(scenariosInput);
+    
+    document.body.appendChild(form);
+    form.submit();
+}
+
+// Reset validation when branch name changes
+document.getElementById('branch_name').addEventListener('input', function() {
+    const validation = document.getElementById('branchValidation');
+    const validateBtn = document.getElementById('validateBtn');
+    const nextBtn = document.getElementById('nextBtn');
+    
+    validation.style.display = 'none';
+    validateBtn.style.display = 'inline-block';
+    validateBtn.disabled = false;
+    nextBtn.style.display = 'none';
+    
+    validatedBranch = null;
+    availableScenarios = [];
+});
+</script>
 {% endblock %}