<?php


if (isset($_POST["submit"])) {
    if (empty($_POST["name"])) {
        $error .= '<p><label class="text-danger">Please Enter your Name</label></p>';
    } else {
        $name = clean_text($_POST["name"]);
        if (!preg_match("/^[a-zA-Z ]*$/", $name)) {
            $error .= '<p><label class="text-danger">Only letters and white space allowed</label></p>';
        }
    }
    if (empty($_POST["email"])) {
        $error .= '<p><label class="text-danger">Please Enter your Email</label></p>';
    } else {
        $email = clean_text($_POST["email"]);
        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
            $error .= '<p><label class="text-danger">Invalid email format</label></p>';
        }
    }
    if (empty($_POST["message"])) {
        $error .= '<p><label class="text-danger">Message is required</label></p>';
    } else {
        $message = clean_text($_POST["message"]);
    }
    if ($error == '') {
        $file_open = fopen("contact_data.csv", "a");
        $no_rows = count(file("contact_data.csv"));
        if ($no_rows > 1) {
            $no_rows = ($no_rows - 1) + 1;
        }
        $form_data = array(
            'sr_no'  => $no_rows,
            'name'  => $name,
            'email'  => $email,
            'message' => $message
        );
        fputcsv($file_open, $form_data);
        $error = '<label class="text-success">Thank you for contacting us</label>';
        $name = '';
        $email = '';
        $message = '';
    }
}