FeedLite/thread.php

<?php
/**
 * 问题详情 + 回复
 */
require __DIR__ . '/lib/bootstrap.php';

$pdo = fb_db();
$id  = isset($_GET['id']) ? (int)$_GET['id'] : (isset($_POST['id']) ? (int)$_POST['id'] : 0);
if ($id <= 0) { fb_redirect('index.php'); }

$st = $pdo->prepare('SELECT * FROM threads WHERE id = ?');
$st->execute([$id]);
$thread = $st->fetch();
if (!$thread) {
    http_response_code(404);
    fb_layout_head('问题不存在');
    echo '<div class="empty"><p>该问题不存在或已被删除。</p><p><a class="btn primary" href="index.php">返回问题列表</a></p></div>';
    fb_layout_foot();
    exit;
}

// 审核（先审后显）：未通过审核的问题对访客不可见
if (!fb_thread_public($thread)) {
    $justSubmitted = (isset($_GET['submitted']) && (string)$_GET['submitted'] === '1');
    if ($justSubmitted) {
        fb_layout_head('提交成功', ['robots' => 'noindex,nofollow']);
        echo '<div class="empty">'
           . '<h2 style="margin:0 0 10px">提交成功，等待审核</h2>'
           . '<p>你的反馈已收到（编号 #' . (int)$thread['id'] . '），我们会先确认它是否为应用问题：</p>'
           . '<p>· 确认为问题 —— 审核通过后会公开显示，其他人也能查看与回复；<br>'
           . '· 确认不是问题 —— 我们会关闭它，并把结论与说明发送到你留下的邮箱。</p>'
           . '<p class="muted">审核通常在 1~2 个工作日内完成，请留意邮箱。</p>'
           . '<p><a class="btn primary" href="index.php">返回问题列表</a></p>'
           . '</div>';
        fb_layout_foot();
        exit;
    }
    http_response_code(404);
    fb_layout_head('问题不存在');
    echo '<div class="empty"><p>该问题不存在或已被删除。</p><p><a class="btn primary" href="index.php">返回问题列表</a></p></div>';
    fb_layout_foot();
    exit;
}

$statuses = fb_statuses();
$err      = '';
$atts     = [];
$form     = ['name' => '', 'email' => '', 'body' => '', 'captcha' => ''];

/* ---------------- 处理回复提交 ---------------- */
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // 审核中（未公开）的问题不允许回复
    if (!fb_thread_public($thread)) {
        http_response_code(403);
        fb_layout_head('暂不可回复');
        echo '<div class="empty"><p>该问题还在审核中，暂时不能回复。</p><p><a class="btn primary" href="index.php">返回问题列表</a></p></div>';
        fb_layout_foot();
        exit;
    }

    $form['name']  = trim(isset($_POST['name']) ? (string)$_POST['name'] : '');
    $form['email'] = trim(isset($_POST['email']) ? (string)$_POST['email'] : '');
    $form['body']  = trim(isset($_POST['body']) ? (string)$_POST['body'] : '');
    $capInput      = isset($_POST['captcha']) ? (string)$_POST['captcha'] : '';
    $adminPw       = isset($_POST['admin_password']) ? (string)$_POST['admin_password'] : '';
    $hp            = trim(isset($_POST['website']) ? (string)$_POST['website'] : '');
    $t0            = isset($_POST['t0']) ? (int)$_POST['t0'] : 0;

    list($attOk, $attList, $attErr) = fb_attach_parse(isset($_POST['attachments']) ? $_POST['attachments'] : '');

    $isAdmin = ($adminPw !== '' && fb_admin_verify_password($adminPw));

    if (!fb_csrf_ok(isset($_POST['csrf']) ? $_POST['csrf'] : '')) {
        $err = '会话已过期，请重新提交。';
    } elseif ($hp !== '') {
        $err = '提交未通过校验，请重试。';
    } elseif ($t0 > 0 && (time() - $t0) < max(0, (int)fb_cfg('post_min_seconds', 3))) {
        $err = '提交过于频繁，请稍候再试。';
    } elseif (!fb_valid_name($form['name']) && !$isAdmin) {
        $err = '请填写昵称（1~24 个字符）。';
    } elseif (!$isAdmin && !filter_var($form['email'], FILTER_VALIDATE_EMAIL)) {
        $err = '请填写有效的邮箱地址（用于接收回复通知）。';
    } elseif (!fb_valid_body($form['body'])) {
        $err = '回复内容请填写 2~5000 个字符。';
    } elseif (!$attOk) {
        $err = $attErr;
    } elseif (!fb_rate_check('reply', (int)fb_cfg('rate_limit.reply_per_hour', 20))) {
        $err = '回复过于频繁，请稍后再试。';
    } else {
        list($vOk, $vList, $vErr) = fb_attach_verify($attList);
        if (!$vOk) {
            $err  = $vErr;
            $atts = $attList;
        } elseif (!fb_attach_cap_ok($pdo, $vList)) {
            $err  = '附件存储空间已满，请减少附件后重试。';
            $atts = $vList;
        } elseif (!fb_captcha_check($capInput)) {
            $err  = '人机验证未通过，请重新作答。';
            $atts = $vList;
        } else {
            $now       = time();
            $replyName = $isAdmin ? '官方' : $form['name'];
            $replyMail = $isAdmin ? null : $form['email'];

            $ins = $pdo->prepare('INSERT INTO replies(thread_id, body, author_name, author_email, is_admin, created_at, ip_hash) VALUES(?,?,?,?,?,?,?)');
            $ins->execute([$id, $form['body'], $replyName, $replyMail, $isAdmin ? 1 : 0, $now, fb_ip_hash()]);
            $replyId = (int)$pdo->lastInsertId();
            fb_attach_save($pdo, $id, $replyId, $vList);

            // 更新主题：回复数 +1、活跃时间；管理员可同时调整状态
            $newStatus = null;
            if ($isAdmin && isset($_POST['status']) && isset($statuses[(string)$_POST['status']])) {
                $newStatus = (string)$_POST['status'];
            }
            if ($newStatus !== null) {
                $upd = $pdo->prepare('UPDATE threads SET reply_count = reply_count + 1, updated_at = ?, status = ? WHERE id = ?');
                $upd->execute([$now, $newStatus, $id]);
            } else {
                $upd = $pdo->prepare('UPDATE threads SET reply_count = reply_count + 1, updated_at = ? WHERE id = ?');
                $upd->execute([$now, $id]);
            }
            fb_rate_hit('reply');

            // 发送通知邮件给发帖人
            $replyRow = [
                'id'           => $replyId,
                'body'         => $form['body'],
                'author_name'  => $replyName,
                'author_email' => $replyMail,
                'is_admin'     => $isAdmin ? 1 : 0,
            ];
            fb_notify_reply($pdo, $thread, $replyRow, $isAdmin);

            fb_redirect('thread.php?id=' . $id . '#r' . $replyId);
        }
    }
}

/* ---------------- 读取数据 ---------------- */
$st = $pdo->prepare('SELECT id, body, author_name, is_admin, created_at FROM replies WHERE thread_id = ? ORDER BY created_at ASC, id ASC');
$st->execute([$id]);
$replies = $st->fetchAll();

// 重新读取主题（可能在 POST 中更新过状态）
$st = $pdo->prepare('SELECT * FROM threads WHERE id = ?');
$st->execute([$id]);
$thread = $st->fetch();

// 附件（主题级 + 各回复）
$attMap = fb_attach_for_thread($pdo, $id);

fb_layout_head(fb_excerpt($thread['title'], 50));
?>

<div class="crumbs"><a href="index.php">← 返回问题列表</a></div>

<article class="subject">
  <div class="item-top">
    <span class="badge cat"><?php echo e(fb_category_label($thread['category'])); ?></span>
    <span class="badge st st-<?php echo e($thread['status']); ?>"><?php echo e(fb_status_label($thread['status'])); ?></span>
    <h1 class="subject-title"><?php echo e($thread['title']); ?></h1>
    <span class="item-id" title="问题编号">#<?php echo (int)$id; ?></span>
  </div>
  <div class="item-meta">
    <span class="who"><?php echo e($thread['author_name']); ?></span>
    <span class="dot">·</span>
    <span><?php echo e(fb_fmt_time($thread['created_at'])); ?></span>
    <span class="dot">·</span>
    <span><?php echo (int)$thread['reply_count']; ?> 条回复</span>
  </div>
  <div class="subject-body"><?php echo nl2br(e($thread['body'])); ?></div>
  <?php echo fb_attach_render($attMap['main']); ?>
</article>

<section class="replies">
  <h2>全部回复（<?php echo count($replies); ?>）</h2>
  <?php if (!$replies): ?>
    <div class="empty small"><p>还没有回复，欢迎在下方参与讨论。</p></div>
  <?php else: ?>
    <?php foreach ($replies as $r): ?>
      <div class="reply <?php echo $r['is_admin'] ? 'admin' : ''; ?>" id="r<?php echo (int)$r['id']; ?>">
        <div class="reply-head">
          <span class="who"><?php echo e($r['is_admin'] ? '官方' : $r['author_name']); ?></span>
          <?php if ($r['is_admin']): ?><span class="badge official">官方答复</span><?php endif; ?>
          <span class="dot">·</span>
          <span class="time"><?php echo e(fb_fmt_time($r['created_at'])); ?></span>
        </div>
        <div class="reply-body"><?php echo nl2br(e($r['body'])); ?></div>
        <?php
          $rid = (int)$r['id'];
          if (!empty($attMap['replies'][$rid])) {
              echo fb_attach_render($attMap['replies'][$rid], ['compact' => true]);
          }
        ?>
      </div>
    <?php endforeach; ?>
  <?php endif; ?>
</section>

<section class="reply-form">
  <h2>我要回复</h2>
  <?php fb_flash_box($err, 'error'); ?>
  <form method="post" action="thread.php?id=<?php echo (int)$id; ?>">
    <input type="hidden" name="id"  value="<?php echo (int)$id; ?>">
    <input type="hidden" name="csrf" value="<?php echo e(fb_csrf_token()); ?>">
    <input type="hidden" name="t0"  value="<?php echo time(); ?>">
    <div class="hp-field" aria-hidden="true">
      <label>请勿填写此栏<input type="text" name="website" tabindex="-1" autocomplete="off"></label>
    </div>

    <div class="row2">
      <label class="field">
        <span>昵称 <b class="req">*</b></span>
        <input type="text" name="name" maxlength="24" value="<?php echo e($form['name']); ?>" placeholder="怎么称呼你" required>
      </label>
      <label class="field" id="emailField">
        <span>邮箱 <b class="req">*</b><i class="hint">仅用于接收回复通知，不会公开</i></span>
        <input type="email" name="email" maxlength="120" value="<?php echo e($form['email']); ?>" placeholder="you@example.com" required>
      </label>
    </div>

    <label class="field">
      <span>回复内容 <b class="req">*</b></span>
      <textarea name="body" rows="6" maxlength="5000" placeholder="说说你的看法或补充…" required><?php echo e($form['body']); ?></textarea>
    </label>

    <?php fb_uploaders($atts); ?>

    <div class="captcha">
      <label class="field">
        <span>人机验证 <b class="req">*</b> <i class="hint">防机器人，随手答一下</i></span>
        <div class="captcha-line">
          <span class="c-q"><?php echo e(fb_captcha_question()); ?></span>
          <input type="text" name="captcha" value="" placeholder="答案" autocomplete="off" required>
          <a class="reload" href="captcha.php" data-captcha-refresh>换一题</a>
        </div>
      </label>
    </div>

    <label class="field admin-pw">
      <span>管理员口令 <i class="hint">选填；填写后将以「官方」身份回复</i></span>
      <input type="password" name="admin_password" value="" autocomplete="off" placeholder="管理员专用">
    </label>

    <div class="field admin-status" hidden>
      <span>处理状态 <i class="hint">仅管理员可见</i></span>
      <select name="status">
        <?php foreach ($statuses as $k => $v): ?>
          <option value="<?php echo e($k); ?>" <?php echo $thread['status'] === $k ? 'selected' : ''; ?>><?php echo e($v); ?></option>
        <?php endforeach; ?>
      </select>
    </div>

    <div class="form-actions">
      <button class="btn primary" type="submit">提交回复</button>
    </div>
  </form>
</section>

<?php
fb_layout_foot();