From 949352ec2a1c00f8415a18372c8d7cf344d61054 Mon Sep 17 00:00:00 2001
From: Arcturus <github@drk.st>
Date: Sat, 5 Oct 2024 12:03:13 +0900
Subject: [PATCH] init

---
 .editorconfig     |   8 +++
 hashtag.addon.php | 174 ++++++++++++++++++++++++++++++++++++++++++++++
 readme.md         |   8 +++
 3 files changed, 190 insertions(+)
 create mode 100644 .editorconfig
 create mode 100644 hashtag.addon.php
 create mode 100644 readme.md

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..78c6dde
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,8 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+indent_size = 2
diff --git a/hashtag.addon.php b/hashtag.addon.php
new file mode 100644
index 0000000..61a87d7
--- /dev/null
+++ b/hashtag.addon.php
@@ -0,0 +1,174 @@
+<?php
+class HashtagAddon extends Addon
+{
+  public $name = "게시글 해시태그 추적 애드온";
+  public $description = "해시태그 추적 애드온";
+  public $author = "Amber";
+  public $link = "https://info.drk.st/about";
+  public $version = "1.0.0";
+
+  public $className;
+  public $addonPath;
+  public $addonFile;
+
+  /**
+   * 애드온 생성자입니다.
+   * @return void
+   */
+  public function __construct()
+  {
+  }
+
+  public function init($data = [])
+  {
+    $that = $this;
+
+    EventHAndler::addEventHandler(
+      "amber.load_config_after",
+      function ($args = null) {
+        global $g5;
+
+        $g5['hashtags_table'] = G5_TABLE_PREFIX . 'hashtags';
+        $g5['hashtag_posts_table'] = G5_TABLE_PREFIX . 'hashtag_posts';
+
+        if (!sql_fetch_array(sql_query("DESC {$g5['hashtags_table']}"))) {
+          sql_query("CREATE TABLE {$g5['hashtags_table']} (
+            `srl` INT(11) NOT NULL AUTO_INCREMENT,
+            `h_name` VARCHAR(255) NULL DEFAULT '' COLLATE 'utf8mb3_general_ci',
+            `h_hidden` INT(11) NOT NULL DEFAULT '0',
+            `h_created_at` DATETIME NULL DEFAULT current_timestamp(),
+            `h_updated_at` DATETIME NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(),
+            PRIMARY KEY (`srl`) USING BTREE
+          )
+          COLLATE='utf8mb3_general_ci'
+          ENGINE=MyISAM");
+        }
+
+        if (!sql_fetch_array(sql_query("DESC {$g5['hashtag_posts_table']}"))) {
+          sql_query("CREATE TABLE {$g5['hashtag_posts_table']} (
+            `post_id` INT(11) NOT NULL,
+            `board_id` VARCHAR(255) NOT NULL,
+            `srl` INT NOT NULL,
+            `created_at` DATETIME NULL DEFAULT current_timestamp(),
+            PRIMARY KEY (`post_id`, `board_id`, `srl`),
+            FOREIGN KEY (`srl`) REFERENCES {$g5['hashtags_table']}(`srl`) ON DELETE CASCADE
+          )
+          COLLATE='utf8mb3_general_ci'
+          ENGINE=MyISAM");
+        }
+      },
+      10
+    );
+
+    EventHandler::addEventHandler(
+      "gnuboard.bbs.write_update_document_create",
+      function ($args = null) use ($that) {
+        $that->writeUpdateDocumentUpdate($args);
+      }
+      ,
+      10
+    );
+
+    EventHandler::addEventHandler(
+      "gnuboard.bbs.write_update_document_update",
+      function ($args = null) use ($that) {
+        $that->writeUpdateDocumentUpdate($args);
+      }
+      ,
+      10
+    );
+
+    EventHandler::addEventHandler(
+      "gnuboard.bbs.delete",
+      function ($args = null) use ($that) {
+        $bo_table = $_POST["bo_table"];
+        $write = $args[0];
+
+        $that->delete_hashtags($bo_table, $write['wr_id']);
+      }
+      ,
+      10
+    );
+  }
+
+  public function extract_hashtags($content)
+  {
+    preg_match_all('/#([A-Za-z0-9가-힣ㄱ-ㅎㅏ-ㅣ_]+)/', $content, $matches);
+    return $matches[1];
+  }
+
+  public function delete_hashtags($bo_table, $wr_id)
+  {
+    global $g5;
+    sql_query("DELETE FROM {$g5['hashtag_posts_table']} WHERE `board_id` = '{$bo_table}' AND `post_id` = '{$wr_id}'");
+    $sql = "SELECT h.srl, COUNT(hp.srl) AS count
+            FROM {$g5['hashtags_table']} h
+            LEFT JOIN {$g5['hashtag_posts_table']} hp 
+            ON h.srl = hp.srl
+            GROUP BY h.srl
+            HAVING count = 0";
+
+    $result = sql_query($sql);
+
+    while ($row = sql_fetch_array($result)) {
+      $delete_srl = $row['srl'];
+      $delete_sql = "DELETE FROM {$g5['hashtags_table']} WHERE srl = '$delete_srl'";
+      sql_query($delete_sql);
+    }
+  }
+
+  public function proc_hashtags($bo_table, $wr_id, $content)
+  {
+    global $g5;
+    // if post update, reset hashtag data - arcturus
+    $this->delete_hashtags($bo_table, $wr_id);
+
+    $hashtags = $this->extract_hashtags($content);
+    foreach ($hashtags as $hashtag) {
+      $q = sql_fetch("SELECT `srl` FROM `{$g5['hashtags_table']}` WHERE `h_name` = '{$hashtag}'");
+      if (!$q) {
+        sql_query("INSERT INTO {$g5['hashtags_table']} SET `h_name` = '{$hashtag}', `h_hidden` = 0");
+        $q = sql_fetch("SELECT `srl` FROM `{$g5['hashtags_table']}` WHERE `h_name` = '{$hashtag}'");
+      }
+      sql_query("INSERT INTO {$g5['hashtag_posts_table']} SET `board_id` = '{$bo_table}', `post_id` = '{$wr_id}', `srl` = '{$q['srl']}'");
+    }
+  }
+
+  public function writeUpdateDocumentUpdate($data)
+  {
+    global $is_admin;
+
+    if ($is_admin) {
+      $wr_content = '';
+      if (isset($_POST['wr_content'])) {
+        $wr_content = substr(trim($_POST['wr_content']), 0, 65536);
+        $wr_content = preg_replace("#[\\\]+$#", "", $wr_content);
+      }
+
+      $bo_table = isset($data[0]) ? $data[0] : '';
+      $wr_id = isset($data[2]) ? $data[2] : '';
+
+      $this->proc_hashtags($bo_table, $wr_id, $wr_content);
+    }
+  }
+
+  public function printConfigForm()
+  {
+    // $config = $this->getConfig();
+    echo '현재 애드온에 별도의 설정이 없습니다.';
+  }
+
+  public function getConfig()
+  {
+    global $g5;
+
+    $sql = "SELECT addon_config FROM {$g5['addons_config_table']} WHERE addon_name = '{$this->className}'";
+    $result = sql_fetch($sql);
+
+    if ($result && isset($result['addon_config'])) {
+      return json_decode($result['addon_config'], true) ?: [];
+    }
+
+    return [];
+  }
+}
diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..231d17c
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,8 @@
+## 해시태그 애드온
+
+게시글 작성 시 게시글 내부에 `#` 을 붙여 작성하는 해시태그를 데이터베이스에 등록하고
+지원하는 스킨에서 사용할 수 있게 해 주는 애드온입니다.
+
+## 설치방법
+
+`/addons/hashtag` 폴더를 만들어 저장소의 hashtag.addon.php 를 업로드합니다.