Initial commit: Flutter 无书应用项目
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219
ht/api/vote.php
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219
ht/api/vote.php
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<?php
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/**
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* 投票操作API
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*/
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// 引入必要文件
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require_once '../inc/pubs.php';
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require_once '../inc/sqls.php';
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// 获取操作类型
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$action = isset($_REQUEST['act']) ? $_REQUEST['act'] : '';
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// 实例化数据库操作类
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$db = new DB();
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// 根据操作类型执行相应操作
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switch ($action) {
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// 提交投票
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case 'submit':
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// 验证权限
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$user = checkAuth('submit');
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if (!$user) {
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exit;
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}
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// 获取参数
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$topicId = isset($_POST['topic_id']) ? intval($_POST['topic_id']) : 0;
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$optionsStr = isset($_POST['options']) ? $_POST['options'] : '';
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// 参数验证
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if (empty($topicId) || empty($optionsStr)) {
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ajaxReturn(1, '参数错误');
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}
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// 转换选项为数组
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$options = explode(',', $optionsStr);
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if (empty($options)) {
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ajaxReturn(1, '请至少选择一个选项');
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}
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// 获取投票信息
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$vote = $db->getOne('vote', "id = $topicId");
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if (!$vote) {
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ajaxReturn(1, '投票不存在');
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}
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// 验证投票状态
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$now = date('Y-m-d H:i:s');
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if ($vote['status'] != 1) {
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ajaxReturn(1, '该投票已被禁用');
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}
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if ($vote['statime'] > $now) {
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ajaxReturn(1, '该投票尚未开始');
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}
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if ($vote['endtime'] < $now) {
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ajaxReturn(1, '该投票已经结束');
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}
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// 检查用户是否已投票
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$hasVoted = $db->count('recs', "topic_id = $topicId AND user_id = {$user['id']}");
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if ($hasVoted > 0) {
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ajaxReturn(1, '您已经参与过该投票');
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}
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// 验证选项数量
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if ($vote['itype'] == 1 && count($options) > $vote['maxtime']) {
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ajaxReturn(1, "最多只能选择 {$vote['maxtime']} 项");
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}
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// 验证选项是否存在
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foreach ($options as $optionId) {
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$option = $db->getOne('xuan', "id = $optionId AND topic_id = $topicId");
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if (!$option) {
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ajaxReturn(1, '选项不存在');
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}
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}
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// 开始事务
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$db->startTransaction();
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try {
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// 添加投票记录
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$ip = $_SERVER['REMOTE_ADDR'];
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$time = date('Y-m-d H:i:s');
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foreach ($options as $optionId) {
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$result = $db->insert('recs', [
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'topic_id' => $topicId,
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'user_id' => $user['id'],
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'option_id' => $optionId,
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'vote_time' => $time,
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'ip' => $ip
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]);
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if (!$result) {
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throw new Exception('提交投票失败');
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}
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}
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// 记录日志
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writeLog($user['id'], 'vote', "参与投票：{$vote['title']}");
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// 提交事务
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$db->commit();
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ajaxReturn(0, '投票成功');
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} catch (Exception $e) {
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// 回滚事务
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$db->rollback();
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ajaxReturn(1, $e->getMessage());
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}
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break;
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// 检查是否已投票
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case 'checkVoted':
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// 验证权限
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$user = checkAuth('checkVoted');
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if (!$user) {
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exit;
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}
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// 获取参数
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$topicId = isset($_REQUEST['topic_id']) ? intval($_REQUEST['topic_id']) : 0;
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// 参数验证
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if (empty($topicId)) {
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ajaxReturn(1, '参数错误');
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}
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// 检查用户是否已投票
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$hasVoted = $db->count('recs', "topic_id = $topicId AND user_id = {$user['id']}");
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ajaxReturn(0, '查询成功', ['hasVoted' => $hasVoted > 0]);
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break;
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// 获取投票结果
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case 'getResult':
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// 获取参数
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$topicId = isset($_REQUEST['topic_id']) ? intval($_REQUEST['topic_id']) : 0;
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// 参数验证
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if (empty($topicId)) {
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ajaxReturn(1, '参数错误');
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}
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// 获取投票信息
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$vote = $db->getOne('vote', "id = $topicId");
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if (!$vote) {
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ajaxReturn(1, '投票不存在');
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}
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// 获取选项列表
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$options = $db->getAll('xuan', "topic_id = $topicId", '*', 'sort ASC, id ASC');
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if (empty($options)) {
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ajaxReturn(1, '暂无投票选项');
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}
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// 获取投票结果
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$sql = "SELECT option_id, COUNT(*) as vote_count FROM " . $db->table('recs') . " WHERE topic_id = $topicId GROUP BY option_id";
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$result = $db->query($sql);
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$voteResults = [];
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$totalVotes = 0;
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if ($result) {
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while ($row = $result->fetch_assoc()) {
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$voteResults[$row['option_id']] = $row['vote_count'];
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$totalVotes += $row['vote_count'];
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}
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}
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// 格式化结果
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$formattedResults = [];
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foreach ($options as $option) {
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$voteCount = isset($voteResults[$option['id']]) ? $voteResults[$option['id']] : 0;
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$percentage = $totalVotes > 0 ? round(($voteCount / $totalVotes) * 100, 1) : 0;
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$formattedResults[] = [
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'id' => $option['id'],
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'name' => $option['name'],
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'count' => $voteCount,
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'percentage' => $percentage
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];
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}
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// 用户是否已投票
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$hasVoted = false;
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$userVotes = [];
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if (isset($_SESSION['user']) && !empty($_SESSION['user']['id'])) {
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$userId = $_SESSION['user']['id'];
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$userVoteRecords = $db->getAll('recs', "topic_id = $topicId AND user_id = $userId");
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if (!empty($userVoteRecords)) {
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$hasVoted = true;
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foreach ($userVoteRecords as $record) {
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$userVotes[] = $record['option_id'];
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}
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}
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}
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ajaxReturn(0, '获取成功', [
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'vote' => $vote,
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'options' => $options,
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'results' => $formattedResults,
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'totalVotes' => $totalVotes,
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'hasVoted' => $hasVoted,
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'userVotes' => $userVotes
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]);
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break;
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// 未知操作
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default:
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ajaxReturn(1, '未知操作');
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break;
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}
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