<?php
/*
Plugin Name: jp-auto-tag2
Version: 0.1.10
Description: auto jp tag2
Author: taoka toshiaki
Author URI: https://zip358.com/
Plugin URI: https://zip358.com/plugin/jp-auto-tag2.zip
*/
class jp_auto_tag2
{
    public $db_option = "jp_auto_tag2";
    function frm_page2()
    {
        add_menu_page('jp-auto-tag2', 'jp-auto-tag2',  'manage_options', __FILE__, array($this, 'show_text_option_page2'), '', 8);
    }
    function show_text_option_page2()
    {
        wp_enqueue_style('bootstrap', 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css', array(), '3.3.6');
        wp_enqueue_script('bootstrap', 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js', array(), '3.3.6');
        $options = get_option($this->db_option);
        if (!empty($options)) {
            $Access_Token_Publish_URL = $options["Access_Token_Publish_URL"];
            $API_Base_URL = $options["API_Base_URL"];
            $Client_ID = $options["Client_ID"];
            $Client_secret = $options["Client_secret"];
            $max_keyword_num = $options["max_keyword_num"];
        }
        include_once dirname(__FILE__) . '/jp-auto-tag-tmp2.php';
    }
    function ajax_event2()
    {
        $options["max_keyword_num"] = $obj["max_keyword_num"] = (int)$_POST["max_keyword_num"]<5?5:(int)$_POST["max_keyword_num"];
        $options["Access_Token_Publish_URL"] = $obj["Access_Token_Publish_URL"] = $_POST["Access_Token_Publish_URL"];
        $options["API_Base_URL"] = $obj["API_Base_URL"] = $_POST["API_Base_URL"];
        $options["Client_ID"] = $obj["Client_ID"] = $_POST["Client_ID"];
        $options["Client_secret"] = $obj["Client_secret"] = $_POST["Client_secret"];
        update_option($this->db_option, $options);
        print json_encode($obj);
        die(0);
    }
    function api_tag2($post_id)
    {
        $cuthttp = function ($str = "") {
            if (!$str) return $str;
            return preg_replace("/https?:\/\/[a-zA-Z0-9|%|\?|_|=|-|\.|\/]*$/m", "", $str);
        };
        $post = get_post($post_id);
        $title = $post->post_title;
        $content = strip_tags($post->post_content);
        $document = $title . $cuthttp($content);
        $options = get_option($this->db_option);
        if ($options["Access_Token_Publish_URL"] && $options["Client_ID"] && $options["Client_secret"]) {
            $curl = function ($ptn, $options, $token = "", $token_type = "", $document = "") {
                switch ($ptn) {
                    case "token":
                        $data = [
                            'grantType' => 'client_credentials',
                            'clientId' => $options["Client_ID"],
                            'clientSecret' => $options["Client_secret"],
                        ];
                        $header = [
                            'Content-Type: application/json;charset=UTF-8',
                        ];
                        $url = $options["Access_Token_Publish_URL"];
                        break;
                    case "tag":
                        $data = [
                            'document' => $document,
                            'max_keyword_num'=>$options["max_keyword_num"],
                        ];
                        $header = [
                            'Authorization: ' . ucfirst($token_type) . ' ' . $token,
                            'Content-Type: application/json;charset=UTF-8',
                        ];
                        $url = rtrim($options["API_Base_URL"],"/")."/nlp/v1/keyword";
                        break;
                }
                $curl = curl_init();
                curl_setopt($curl, CURLOPT_URL, $url);
                curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'POST');
                curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($data));
                curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
                curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
                curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
                curl_setopt($curl, CURLOPT_HEADER, true);
                $response = curl_exec($curl);
                $header_size = curl_getinfo($curl, CURLINFO_HEADER_SIZE);
                $header = substr($response, 0, $header_size);
                $body = substr($response, $header_size);
                $res = (object)json_decode($body, true);
                curl_close($curl);
                return $res;
            };
            $res = $curl("token", $options);
            $access_token = $res->access_token;
            $token_type = $res->token_type;
            if ($options["API_Base_URL"] && $document && $access_token){
                $res = $curl("tag", $options, $access_token, $token_type, $document);
                foreach($res->result as $key=>$val){
                    $tags[] = $val["form"];
                }
                wp_set_post_tags($post_id, implode(",", array_unique($tags)), false);
            }
        }
    }
}
$jp_auto_tag2 = new jp_auto_tag2();
add_action('save_post', array($jp_auto_tag2, 'api_tag2'));
add_action('publish_post', array($jp_auto_tag2, 'api_tag2'));
add_action('admin_menu', array($jp_auto_tag2, 'frm_page2'));
add_action('wp_ajax_ajax_event2', array($jp_auto_tag2, 'ajax_event2'));

<form id="ajax-frm">
<table class="table">
    <tr>
        <td>
            プラグイン説明：jp-auto-tag2はapi.ce-cotoha.comのAPIを<br>
            使用し投稿文を解析しキーワードをタグを抽出します。<br>
        </td>
    </tr>
    <tr>
        <td>
            <a href="https://api.ce-cotoha.com/contents/index.html" target="new">https://api.ce-cotoha.com/contents/index.html</a><br>
            上記のURLよりユーザー登録を行いAPI情報をそれぞれ入力ください。全て必須項目になります。
        </td>
    </tr>
    <tr>
        <td>
            Access Token Publish URL:<br>
            <input type="text" name="Access_Token_Publish_URL" value="<?=$Access_Token_Publish_URL?>"   class="form-control">
        </td>
    </tr>
    <tr>
        <td>
            API Base URL:<br>
            <input type="text" name="API_Base_URL" value="<?=$API_Base_URL?>"   class="form-control">
        </td>
    </tr>
    <tr>
        <td>
            Client ID:<br>
            <input type="text" name="Client_ID" value="<?=$Client_ID?>"   class="form-control">
        </td>
    </tr>
    <tr>
        <td>
            Client_secret:<br>
            <input type="text" name="Client_secret" value="<?=$Client_secret?>"   class="form-control">
        </td>
    </tr>
    <tr>
        <td>
            抽出するキーワード（タグ数）5以上:<br>
            <?php
            $max_keyword_num = (int)$max_keyword_num<5?5:$max_keyword_num;
            ?>
            <input type="text" name="max_keyword_num" value="<?=$max_keyword_num?>"   class="form-control">
        </td>
    </tr>
    <tr>
        <td colspan="2"><input type="button" id="frmsubmit" value="登録する" class="form-control"></td>
    </tr>
</table>
</form>
<script>
    jQuery(function($){
        $("#frmsubmit").on("click",function(){
            var ajaxurl = '<?=admin_url( 'admin-ajax.php');?>';
            var data = $("#ajax-frm").serializeArray();
            data.push({name:"action",value:"ajax_event2"});
            $.ajax({
               type:'POST',
               url:ajaxurl,
               data:data,
               success:function(obj){
                   console.log(obj);
                   alert("更新しました");
               }
            });
        });
    })
</script>