<?php
add_action('wp_ajax_brevo_email_send', 'brevo_email_send');
add_action('wp_ajax_nopriv_brevo_email_send', 'brevo_email_send');

function brevo_email_send () {
    $userEmail = $_POST['userEmail'];
    $postUrl = $_POST['postUrl'];
    $recipeID = $_POST['recipeID'];

    if (empty($userEmail) || empty($postUrl) || empty($recipeID)) {
        wp_send_json_error('Missing required data');
        return;
    }

    // Validate email and URL
    if (!filter_var($userEmail, FILTER_VALIDATE_EMAIL) || !preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i", $postUrl)) {
        wp_send_json_error('Invalid email or URL format');
        return;
    }

    // Get the recipe post
    $recipe_post = get_post($recipeID);
    if (!$recipe_post || $recipe_post->post_type !== 'recipes') {
        wp_send_json_error('Invalid recipe ID');
        return;
    }

    // Set up the post data for the email template
    global $post;
    $post = $recipe_post;
    setup_postdata($post);

    // Get the email template based on recipe template
    $recipe_template = get_page_template_slug($recipeID);
    
    ob_start();
    
    if($recipe_template == 'single-recipes-multiple.php') {
        get_template_part('template-parts/recipe/newsletter-email-multiple-template', null, [
            'recipeID' => $recipeID
        ]);
    }
    elseif($recipe_template == 'single-recipes-collection.php') {
        get_template_part('template-parts/recipe/newsletter-email-collection-template', null, [
            'recipeID' => $recipeID
        ]);
    }
    else {
        get_template_part('template-parts/recipe/newsletter-email-default-template', null, [
            'recipeID' => $recipeID
        ]);
    }
    
    $email_content = ob_get_clean();

    // Reset post data
    wp_reset_postdata();

    // Email headers
    $headers = array('Content-Type: text/html; charset=UTF-8');

    // Email subject
    $subject = 'Saved Recipe: ' . get_the_title($recipeID) . ' - FitMenCook';

    // Send the email
    $sent = wp_mail($userEmail, $subject, $email_content, $headers);

    if ($sent) {
        wp_send_json_success('Email sent successfully');
    } else {
        wp_send_json_error('Failed to send email');
    }
    
    die();
}