Billit Integration Dashboard

<?php
// Example usage in your old PHP system
$apiUrl = 'https://billit-bb.redbit.be/api/billit/invoices';
$apiKey = 'your_secure_api_key_here';

$customerData = [
    'name' => 'John Doe',
    'email' => 'john.doe@example.com',
    'phone' => '+32 123 456 789',
    'address' => [
        'street' => 'Main Street 123',
        'city' => 'Brussels',
        'postal_code' => '1000',
        'country' => 'BE'
    ]
];

$invoiceData = [
    'reference' => 'INV-2024-001',
    'description' => 'Web development services',
    'lines' => [
        [
            'description' => 'Website development',
            'quantity' => 1,
            'unit_price' => 1500.00,
            'vat_rate' => 21
        ]
    ]
];

$ch = curl_init();
curl_setopt_array($ch, [
    CURLOPT_URL => $apiUrl,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => json_encode([
        'customer' => $customerData,
        'invoice' => $invoiceData
    ]),
    CURLOPT_HTTPHEADER => [
        'Content-Type: application/json',
        'X-API-Key: ' . $apiKey,
        'Accept: application/json'
    ],
    CURLOPT_TIMEOUT => 30,
]);

$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

if ($httpCode === 200) {
    $result = json_decode($response, true);
    echo "Invoice created: " . $result['data']['invoice']['id'];
} else {
    echo "Error: " . $response;
}
?>