S2OJ/web/app/controllers/subdomain/blog/blog_write.php

<?php
	requirePHPLib('form');

	if (!Auth::check() && UOJConfig::$data['switch']['force-login']) {
		redirectToLogin();
	}

	if (!isNormalUser($myUser) && UOJConfig::$data['switch']['force-login']) {
		become403Page();
	}

	if (!UOJContext::hasBlogPermission()) {
		become403Page();
	}
	if (isset($_GET['id'])) {
		if (!validateUInt($_GET['id']) || !($blog = queryBlog($_GET['id'])) || !UOJContext::isHisBlog($blog)) {
			become404Page();
		}
	}

	requireLib('bootstrap5');
	
	$blog_editor = new UOJBlogEditor();
	$blog_editor->name = 'blog';
	if ($blog) {
		$blog_editor->cur_data = array(
			'title' => $blog['title'],
			'content_md' => $blog['content_md'],
			'content' => $blog['content'],
			'tags' => queryBlogTags($blog['id']),
			'is_hidden' => $blog['is_hidden']
		);
	} else {
		$blog_editor->cur_data = array(
			'title' => $_GET['title'] ?: '新博客',
			'content_md' => '',
			'content' => '',
			'tags' => array(),
			'is_hidden' => isset($_GET['is_hidden']) ? $_GET['is_hidden'] : true,
		);
	}
	if ($blog) {
		$blog_editor->blog_url = HTML::blog_url(UOJContext::user()['username'], "/post/{$blog['id']}");
	} else {
		$blog_editor->blog_url = null;
	}
	
	function updateBlog($id, $data) {
		DB::update("update blogs set title = '".DB::escape($data['title'])."', content = '".DB::escape($data['content'])."', content_md = '".DB::escape($data['content_md'])."', is_hidden = {$data['is_hidden']} where id = {$id}");
	}
	function insertBlog($data) {
		DB::insert("insert into blogs (title, content, content_md, poster, is_hidden, post_time) values ('".DB::escape($data['title'])."', '".DB::escape($data['content'])."', '".DB::escape($data['content_md'])."', '".Auth::id()."', {$data['is_hidden']}, now())");
	}
	
	$blog_editor->save = function($data) {
		global $blog;
		$ret = array();
		if ($blog) {
			updateBlog($blog['id'], $data);
		} else {
			insertBlog($data);
			$blog = array('id' => DB::insert_id(), 'tags' => array());
			$ret['blog_write_url'] = HTML::blog_url(UOJContext::user()['username'], "/post/{$blog['id']}/write");
			$ret['blog_url'] = HTML::blog_url(UOJContext::user()['username'], "/post/{$blog['id']}");
		}
		if ($data['tags'] !== $blog['tags']) {
			DB::delete("delete from blogs_tags where blog_id = {$blog['id']}");
			foreach ($data['tags'] as $tag) {
				DB::insert("insert into blogs_tags (blog_id, tag) values ({$blog['id']}, '".DB::escape($tag)."')");
			}
		}
		return $ret;
	};
	
	$blog_editor->runAtServer();
	?>
<?php echoUOJPageHeader('写博客') ?>

<div class="card">
<div class="card-body">
<?php $blog_editor->printHTML() ?>
</div>
</div>

<!-- 提示信息 -->
<div class="card mt-3">
<div class="card-body">
	<h2 class="h4 card-title">提示</h2>
	<ol>
		<li>题解发布后还需要返回对应题目的题解页面 <b>手动输入博客 ID</b> 来将本文添加到题目的题解列表中（博客 ID 可以在右上角找到）；</li>
		<li>请勿引用不稳定的外部资源（如来自个人服务器的图片或文档等），以便备份及后期维护；</li>
		<li>请勿在博文中直接插入大段 HTML 代码，这可能会破坏页面的显示，可以考虑使用 <a class="text-decoration-none" href="/html2markdown" target="_blank">转换工具</a> 转换后再作修正；</li>
		<li>图片上传推荐使用 <a class="text-decoration-none" href="/image_hosting" target="_blank">S2OJ 图床</a>，以免后续产生外链图片大量失效的情况。</li>
	</ol>
	<p class="card-text">
		帮助：<a class="text-decoration-none" href="http://uoj.ac/blog/7">UOJ 博客使用教程</a>。
	</p>
</div>
</div>

<?php echoUOJPageFooter() ?>