billing2/customers/.hta_slug/generate-invoice.php

<?php
    require('../.hta_config/conf.php');

    if ($_SERVER['REQUEST_METHOD'] === 'POST' && !empty($_POST['customerId'])) {
        try {
            $db = new PDO("mysql:host=$mariaServer;dbname=$mariaDb", $mariaUser, $mariaPass);
            $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

            $totalAmount = $_POST['totalAmount'];
            $tenure = $_POST['tenure'];
            $firstEmiDate = $_POST['firstEmiDate'];
            $totalAmount = $_POST['totalAmount'];
            $frequency = $_POST['frequency'];
            $bookingDate = $_POST['bookingDate'];
            $paymentMode = $_POST['paymentMode'];
            // EMI Calculation
                $emiAmount = round($totalAmount / $tenure, 2);
                $outstandingAmount = $totalAmount;
                $emiDate = new DateTime($firstEmiDate); // Set initial date

                $stmt = $db->prepare("INSERT INTO emi (customerId, emiNumber, emiAmount, emiDate, totalAmount, outstanding, tenure, frequency, bookingDate, paymentMode) VALUES (:customerId, :emiNumber, :emiAmount, :emiDate, :totalAmount, :outstanding, :tenure, :frequency, bookingDate, :paymentMode)");

                for ($i = 1; $i <= $tenure; $i++) {
                    $outstandingAmount -= $emiAmount;
                    $emiDateFormatted = $emiDate->format('Y-m-d');
                    $stmt->bindParam(':customerId', $_GET['customerId']);
                    $stmt->bindParam(':emiNumber', $i);
                    $stmt->bindParam(':emiAmount', $emiAmount);
                    $stmt->bindParam(':emiDate', $emiDateFormatted);
                    $stmt->bindParam(':totalAmount', $totalAmount);
                    $stmt->bindParam(':outstanding', $outstandingAmount);
                    $stmt->bindParam(':tenure', $tenure);
                    $stmt->bindParam(':frequency', $frequency);
                    $stmt->bindParam(':bookingDate', $bookingDate);
                    $stmt->bindParam(':paymentMode', $paymentMode);
                    $stmt->execute();

                    // Move to the next month's EMI date
                    if($frequency === 'Weekly'){
                        $emiDate->modify('+1 week');
                    } elseif($frequency === 'Monthly'){
                        $emiDate->modify('+1 month');
                    }
                }
            echo '<div class="alert alert-success">New EMI Plan Saved Successfully!</div>';
        } catch (PDOException $e) {
            echo '<div class="alert alert-danger">Error: ' . $e->getMessage() . '</div>';
        }
    }

    $customer = null;
    if (!empty($_GET['customerId'])) {
        try {
            $db = new PDO("mysql:host=$mariaServer;dbname=$mariaDb", $mariaUser, $mariaPass);
            $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

            $stmt = $db->prepare("SELECT * FROM customers WHERE customerId = :customerId");
            $stmt->bindParam(':customerId', $_GET['customerId']);
            if ($stmt->execute()) {
                $customer = $stmt->fetch(PDO::FETCH_ASSOC);
            }

            $stmt = $db->prepare("SELECT * FROM address WHERE customerId = :customerId");
            $stmt->bindParam(':customerId', $_GET['customerId']);
            if ($stmt->execute()) {
                $customerAddress = $stmt->fetch(PDO::FETCH_ASSOC);
            }


        } catch (PDOException $e) {
            echo '<div class="alert alert-danger">Error: ' . $e->getMessage() . '</div>';
        }
    }
?>

<div class="container mt-4">
    <h2>Create Invoice</h2>

    <?php if (!empty($customer)): ?>
        <p><strong>Mobile:</strong> <?= htmlspecialchars($customer['mobile']) ?></p>
    <?php else: ?>
        <div class="alert alert-warning">Customer not found.</div>
    <?php endif; ?>

    <form method="POST">
        <div class="d-flex justify-content-between gap-4">
            <div class="w-100">
                <div class="mb-3">
                    <label for="totalAmount" class="form-label">Customer:</label>
                    <input disabled type="text" class="form-control" id="name" name="name" value="<?= htmlspecialchars($customer['name']); ?>">
                </div>
                <div class="mb-3">
                    <label for="totalAmount" class="form-label">Address:</label>
                    <input disabled class="form-control" type="text" value="<?= 'City: ' . $customerAddress['city'] .' District: '. $customerAddress['district'] . ' State: ' .$customerAddress['state'] . ' Pin Code: ' . $customerAddress['pinCode']; ?>">
                </div>
                <div class="mb-3">
                    <label for="totalAmount" class="form-label">Total Amount:</label>
                    <input type="number" class="form-control" id="totalAmount" name="totalAmount" required>
                </div>
                <div class="mb-3">
                    <label for="tenure" class="form-label">Tenure (Weekly or Months):</label>
                    <input type="number" class="form-control" id="tenure" name="tenure" min="1" max="18" required>
                </div>

                <div class="mb-3">
                    <label for="frequency" class="form-label">Frequency:</label>
                    <select name="frequency" class="form-control"required>
                        <option value="">-Select-</option>
                        <option value="Weekly">Weekly</option>
                        <option value="Monthly">Monthly</option>
                    </select>
                </div>
                <div class="d-flex w-100 gap-2">
                    <div class="mb-3 w-100">
                        <label for="bookingDate" class="form-label">Invoice Date:</label>
                        <input type="date" class="form-control" id="bookingDate" name="bookingDate" required>
                    </div>
                    <div class="mb-3 w-100">
                        <label for="firstEmiDate" class="form-label">Due Date:</label>
                        <input type="date" class="form-control" id="firstEmiDate" name="firstEmiDate" required>
                    </div>
                </div>
            </div>
            <div class="w-100">
                <div class="mb-3">
                    <label for="paymentMode" class="form-label">Payment Mode:</label>
                    <select name="paymentMode" class="form-control"required>
                        <option value="">-Select-</option>
                        <option value="UPI">UPI</option>
                        <option value="Credit Card">Credit Card</option>
                        <option value="Debit Card">Debit Card</option>
                    </select>
                </div>
                <div class="mb-3">
                    <label for="currency" class="form-label">Currency:</label>
                    <select name="currency" class="form-control"required>
                        <option value="">-Select-</option>
                        <option value="USD">USD</option>
                        <option value="INR">INR</option>
                    </select>
                </div>
            </div>
        </div>
        
        

        <button type="submit" class="btn btn-primary">Save EMI</button>
    </form>
</div>