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sujit
2025-09-19 22:30:21 +05:45
parent e4344bc96e
commit b82cd20eef
9 changed files with 565 additions and 22 deletions
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79
examples/form.go
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@@ -26,17 +26,17 @@ func main() {
// Add SMS workflow nodes
// Note: Page nodes have no timeout by default, allowing users unlimited time for form input
flow.AddDAGNode(dag.Page, "Login", "login", loginSubDAG(), true)
flow.AddNode(dag.Page, "SMS Form", "SMSForm", &SMSFormNode{})
// flow.AddDAGNode(dag.Page, "Login", "login", loginSubDAG(), true)
flow.AddNode(dag.Page, "SMS Form", "SMSForm", &SMSFormNode{}, true)
flow.AddNode(dag.Function, "Validate Input", "ValidateInput", &ValidateInputNode{})
flow.AddNode(dag.Function, "Send SMS", "SendSMS", &SendSMSNode{})
flow.AddNode(dag.Page, "SMS Result", "SMSResult", &SMSResultNode{})
flow.AddNode(dag.Page, "Error Page", "ErrorPage", &ErrorPageNode{})
// Define edges for SMS workflow
flow.AddEdge(dag.Simple, "Login to Form", "login", "SMSForm")
// flow.AddEdge(dag.Simple, "Login to Form", "login", "SMSForm")
flow.AddEdge(dag.Simple, "Form to Validation", "SMSForm", "ValidateInput")
flow.AddCondition("ValidateInput", map[string]string{"valid": "SendSMS", "invalid": "ErrorPage"})
flow.AddCondition("ValidateInput", map[string]string{"valid": "SendSMS"}) // Removed invalid -> ErrorPage since we use ResetTo
flow.AddCondition("SendSMS", map[string]string{"sent": "SMSResult", "failed": "ErrorPage"})
// Start the flow
@@ -303,12 +303,17 @@ func (s *SMSFormNode) ProcessTask(ctx context.Context, task *mq.Task) mq.Result
var inputData map[string]any
if task.Payload != nil && len(task.Payload) > 0 {
if err := json.Unmarshal(task.Payload, &inputData); err == nil {
// If we have valid input data, pass it through for validation
return mq.Result{Payload: task.Payload, Ctx: ctx}
// Check if this is validation error data (contains validation_error)
if _, hasValidationError := inputData["validation_error"]; hasValidationError {
// This is validation error data, show the form with errors
} else {
// If we have valid input data, pass it through for validation
return mq.Result{Payload: task.Payload, Ctx: ctx}
}
}
}
// Otherwise, show the form
// Show the form (either initial load or with validation errors)
htmlTemplate := `
<!DOCTYPE html>
<html>
@@ -399,12 +404,21 @@ func (s *SMSFormNode) ProcessTask(ctx context.Context, task *mq.Task) mq.Result
<div class="info">
<p>Send SMS messages through our secure DAG workflow</p>
</div>
{{if validation_error}}
<div class="error-message" style="background: rgba(255, 100, 100, 0.2); border: 1px solid #ff6b6b; padding: 15px; border-radius: 8px; margin-bottom: 20px; color: #ffcccc;">
<strong>⚠️ Validation Error:</strong> {{validation_error}}
</div>
{{end}}
<form method="post" action="/process?task_id={{task_id}}&next=true">
<div class="form-group">
<label for="phone">📞 Phone Number:</label>
<input type="tel" id="phone" name="phone"
placeholder="+1234567890 or 1234567890"
required>
value="{{phone}}"
required
{{if error_field_phone}}style="border: 2px solid #ff6b6b; background: rgba(255, 100, 100, 0.1);"{{end}}>
<div class="info" style="margin-top: 5px; font-size: 12px;">
Supports US format: +1234567890 or 1234567890
</div>
@@ -416,14 +430,16 @@ func (s *SMSFormNode) ProcessTask(ctx context.Context, task *mq.Task) mq.Result
placeholder="Enter your message here..."
maxlength="160"
required
oninput="updateCharCount()"></textarea>
<div class="char-count" id="charCount">0/160 characters</div>
oninput="updateCharCount()"
{{if error_field_message}}style="border: 2px solid #ff6b6b; background: rgba(255, 100, 100, 0.1);"{{end}}>{{message}}</textarea>
<div class="char-count" id="charCount">{{message_length}}/160 characters</div>
</div>
<div class="form-group">
<label for="sender_name">👤 Sender Name (Optional):</label>
<input type="text" id="sender_name" name="sender_name"
placeholder="Your name or organization"
value="{{sender_name}}"
maxlength="50">
</div>
@@ -460,9 +476,20 @@ func (s *SMSFormNode) ProcessTask(ctx context.Context, task *mq.Task) mq.Result
</body>
</html>`
messageStr, _ := inputData["message"].(string)
messageLength := len(messageStr)
parser := jet.NewWithMemory(jet.WithDelims("{{", "}}"))
rs, err := parser.ParseTemplate(htmlTemplate, map[string]any{
"task_id": ctx.Value("task_id"),
"task_id": ctx.Value("task_id"),
"validation_error": inputData["validation_error"],
"error_field": inputData["error_field"],
"error_field_phone": inputData["error_field"] == "phone",
"error_field_message": inputData["error_field"] == "message",
"phone": inputData["phone"],
"message": inputData["message"],
"message_length": messageLength,
"sender_name": inputData["sender_name"],
})
if err != nil {
return mq.Result{Error: err, Ctx: ctx}
@@ -501,7 +528,11 @@ func (v *ValidateInputNode) ProcessTask(ctx context.Context, task *mq.Task) mq.R
inputData["validation_error"] = "Phone number is required"
inputData["error_field"] = "phone"
bt, _ := json.Marshal(inputData)
return mq.Result{Payload: bt, Ctx: ctx, ConditionStatus: "invalid"}
return mq.Result{
Payload: bt,
Ctx: ctx,
ResetTo: "SMSForm", // Reset to form instead of going to error page
}
}
// Clean and validate phone number format
@@ -514,7 +545,11 @@ func (v *ValidateInputNode) ProcessTask(ctx context.Context, task *mq.Task) mq.R
inputData["validation_error"] = "Invalid phone number format. Please use US format: +1234567890 or 1234567890"
inputData["error_field"] = "phone"
bt, _ := json.Marshal(inputData)
return mq.Result{Payload: bt, Ctx: ctx, ConditionStatus: "invalid"}
return mq.Result{
Payload: bt,
Ctx: ctx,
ResetTo: "SMSForm", // Reset to form instead of going to error page
}
}
// Validate message
@@ -522,14 +557,22 @@ func (v *ValidateInputNode) ProcessTask(ctx context.Context, task *mq.Task) mq.R
inputData["validation_error"] = "Message is required"
inputData["error_field"] = "message"
bt, _ := json.Marshal(inputData)
return mq.Result{Payload: bt, Ctx: ctx, ConditionStatus: "invalid"}
return mq.Result{
Payload: bt,
Ctx: ctx,
ResetTo: "SMSForm", // Reset to form instead of going to error page
}
}
if len(message) > 160 {
inputData["validation_error"] = "Message too long. Maximum 160 characters allowed"
inputData["error_field"] = "message"
bt, _ := json.Marshal(inputData)
return mq.Result{Payload: bt, Ctx: ctx, ConditionStatus: "invalid"}
return mq.Result{
Payload: bt,
Ctx: ctx,
ResetTo: "SMSForm", // Reset to form instead of going to error page
}
}
// Check for potentially harmful content
@@ -540,7 +583,11 @@ func (v *ValidateInputNode) ProcessTask(ctx context.Context, task *mq.Task) mq.R
inputData["validation_error"] = "Message contains prohibited content"
inputData["error_field"] = "message"
bt, _ := json.Marshal(inputData)
return mq.Result{Payload: bt, Ctx: ctx, ConditionStatus: "invalid"}
return mq.Result{
Payload: bt,
Ctx: ctx,
ResetTo: "SMSForm", // Reset to form instead of going to error page
}
}
}