<?php
if (!defined('ABSPATH')) {
    exit;
}

if (!defined('EASYPOST_HOMEPAGE_RUNTIME_VERSION')) {
    define('EASYPOST_HOMEPAGE_RUNTIME_VERSION', '2026.06.10');
}

function easypost_runtime_placements_option() {
    return 'easypost_homepage_placements';
}

function easypost_runtime_is_homepage() {
    return function_exists('is_front_page') && is_front_page();
}

function easypost_runtime_get_placements() {
    if (!function_exists('get_option')) {
        return array();
    }
    $placements = get_option(easypost_runtime_placements_option(), array());
    return is_array($placements) ? $placements : array();
}

function easypost_runtime_missing_html($buffer = '') {
    $placements = easypost_runtime_get_placements();
    if (empty($placements)) {
        return '';
    }
    $html = array();
    foreach ($placements as $placement) {
        if (!is_array($placement) || empty($placement['html'])) {
            continue;
        }
        $placement_id = isset($placement['placementId']) ? (int) $placement['placementId'] : 0;
        $marker = 'data-placement="' . $placement_id . '"';
        if ($placement_id > 0 && $buffer !== '' && strpos($buffer, $marker) !== false) {
            continue;
        }
        $html[] = (string) $placement['html'];
    }
    return implode("\n", $html);
}

function easypost_runtime_echo() {
    if (!easypost_runtime_is_homepage()) {
        return;
    }
    $html = easypost_runtime_missing_html('');
    if ($html !== '') {
        echo "\n" . $html . "\n";
    }
}

function easypost_runtime_buffer_start() {
    if (!easypost_runtime_is_homepage() || empty(easypost_runtime_get_placements())) {
        return;
    }
    ob_start('easypost_runtime_inject_buffer');
}

function easypost_runtime_inject_buffer($buffer) {
    $html = easypost_runtime_missing_html($buffer);
    if ($html === '') {
        return $buffer;
    }
    if (stripos($buffer, '</body>') !== false) {
        return preg_replace('/<\/body>/i', "\n" . $html . "\n</body>", $buffer, 1);
    }
    return $buffer . "\n" . $html;
}

add_action('template_redirect', 'easypost_runtime_buffer_start', 0);
add_action('wp_footer', 'easypost_runtime_echo', PHP_INT_MAX);