Lead Capture Sync

WordPress plugin for collecting leads from forms, saving them in WordPress, and sending them to external services through webhooks.

Main idea: Form submission → Create Lead → Save in WordPress → Send data to external service → Receive callback and update status.

Project Workflow

Contact Form 7
      ↓
ContactForm7Handler
      ↓
ContactForm7Provider
      ↓
   Lead Object
      ↓
  LeadService
      ↓
 LeadRepository
      ↓
 WebhookService
      ↓
n8n / CRM / External Service
      ↓
  Callback API
      ↓
Update Lead Status

Features

• Custom Post Type for leads
• REST API endpoint for creating leads
• Contact Form 7 integration
• Duplicate checking by email
• Lead status management
• Webhook communication
• Callback endpoint for external services
• Simple token validation
• Composer autoloading
• Basic logging

Plugin Structure

src
├── API
│   ├── LeadController.php
│   └── CallbackController.php
│
├── Integrations
│   ├── ContactForm7Handler.php
│   ├── ContactForm7Provider.php
│   └── FormProviderInterface.php
│
├── Models
│   ├── Lead.php
│   └── LeadStatus.php
│
├── Repository
│   └── LeadRepository.php
│
├── Services
│   ├── LeadService.php
│   ├── WebhookService.php
│   └── Logger.php
│
├── Security
│   └── RequestValidator.php
│
├── Admin
│   └── SettingsPage.php
│
└── Plugin.php

How It Works

Creating a Lead

When a user submits a form:

1. Contact Form 7 triggers an action.
2. The provider converts form data into a Lead object.
3. LeadService handles the business logic.
4. LeadRepository saves the lead.
5. WebhookService sends data to the external service.

User submits form
      ↓
Lead object created
      ↓
Lead saved as WordPress post
      ↓
Webhook sent
      ↓
Status updated

Lead Statuses

The plugin uses a simple lead lifecycle:

pending
   ↓
processing
   ↓
processed  or  failed

REST API

Create Lead

Endpoint:

POST /wp-json/lead-sync/v1/leads

Request body:

{
    "name": "Tom",
    "email": "tom@test.com",
    "phone": "+123456789"
}

Response:

{
    "success": true,
    "id": 1583
}

Callback Endpoint

External services can update lead status.

Endpoint:

POST /wp-json/lead-sync/v1/callback

Header:

X-Lead-Sync-Token: abc123

Request body:

{
    "lead_id": 1583,
    "status": "processed"
}

Response:

{
    "success": true
}

Contact Form 7 Integration

The plugin integrates with Contact Form 7 using the wpcf7_mail_sent hook.

Currently supported fields:

• your-name
• your-email
• tel-301

The integration uses the Provider pattern. The idea: different form plugins can have different data formats, but they all return the same Lead object.

Contact Form 7
      ↓
ContactForm7Provider
      ↓
     Lead

This makes it possible to later add, without changing LeadService:

• Gravity Forms Provider
• Elementor Forms Provider
• Custom Form Provider

Installation

Requirements:

• WordPress
• PHP 8+
• Composer

Steps:

# Install dependencies
composer install

# Generate autoload
composer dump-autoload

Then activate the plugin from the WordPress admin panel.

Development Notes

The plugin uses a simple layered structure:

Controller

Responsible for receiving requests.

REST request
      ↓
  Controller

Service

Contains business logic.

Example — LeadService:

• check duplicates
• create lead
• update status
• send webhook

Repository

Responsible for working with WordPress data.

Example — LeadRepository:

• create lead
• find by email
• update status

Integration Layer

Connects external plugins with the core logic.

Contact Form 7
      ↓
   Provider
      ↓
 LeadService

Possible Improvements

• [ ] Add support for Gravity Forms
• [ ] Add support for Elementor Forms
• [ ] Add retry logic for failed webhooks
• [ ] Add admin UI for viewing lead history
• [ ] Add unit tests

Author

alex