354 lines
9.4 KiB
PHP
354 lines
9.4 KiB
PHP
<?php
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header("Content-Type:application/json;charset=UTF-8");
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session_start();
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define('CACHE_DIR', __DIR__ . '/data/');
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define('CACHE_FILE', CACHE_DIR . 'questions.json');
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define('API_LOCK_FILE', CACHE_DIR . 'api.lock');
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define('API_INTERVAL', 5);
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static $cacheData = null;
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$result = ['code' => 0, 'msg' => '', 'data' => null];
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$action = $_REQUEST['action'] ?? 'question';
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$id = isset($_REQUEST['id']) ? intval($_REQUEST['id']) : null;
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switch($action){
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case 'question':
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$result['data'] = getQuestion($id ?? getCurrentId());
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break;
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case 'next':
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$result['data'] = getNextQuestionAuto();
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break;
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case 'fetch':
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$result['data'] = fetchNewQuestion();
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break;
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case 'answer':
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$result['data'] = checkAnswer($id, $_REQUEST['answer'] ?? '');
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break;
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case 'hint':
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$result['data'] = getHint($id);
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break;
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case 'list':
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$result['data'] = getQuestionList();
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break;
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case 'refresh':
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$result['data'] = refreshCache();
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break;
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case 'stats':
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$result['data'] = getStats();
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break;
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default:
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$result['code'] = 400;
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$result['msg'] = '未知操作';
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}
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echo json_encode($result, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
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function getStats(){
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global $cacheData;
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$cache = loadCache();
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return [
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'total_questions' => count($cache),
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'cache_file_size' => file_exists(CACHE_FILE) ? round(filesize(CACHE_FILE) / 1024, 2) . ' KB' : 0,
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'last_updated' => file_exists(CACHE_FILE) ? date('Y-m-d H:i:s', filemtime(CACHE_FILE)) : 'N/A',
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'memory_usage' => round(memory_get_peak_usage(true) / 1024, 2) . ' KB'
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];
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}
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function getQuestion($id){
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$cache = loadCache();
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if(empty($cache)){
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return ['error' => '没有题目数据'];
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}
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if($id < 0 || $id >= count($cache)){
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return ['error' => '题目不存在', 'total' => count($cache)];
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}
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$item = $cache[$id];
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return [
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'id' => $id,
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'total' => count($cache),
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'question' => $item['question_content'],
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'author' => $item['type']['person'] ?? '',
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'type' => $item['type']['type'] ?? '',
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'grade' => $item['type']['grade'] ?? '',
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'dynasty' => $item['type']['dynasty'] ?? '',
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'options' => formatOptions($item['option_answers'] ?? [])
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];
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}
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function getNextQuestionAuto(){
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$cache = loadCache();
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if(empty($cache)){
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return ['error' => '没有题目数据'];
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}
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$total = count($cache);
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$currentId = getCurrentId();
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$nextId = $currentId + 1;
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if($nextId >= $total){
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$nextId = 0;
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}
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setCurrentId($nextId);
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$result = getQuestion($nextId);
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$result['prev_id'] = $currentId;
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return $result;
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}
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function getCurrentId(){
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return isset($_SESSION['current_question_id']) ? intval($_SESSION['current_question_id']) : 0;
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}
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function setCurrentId($id){
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$_SESSION['current_question_id'] = $id;
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}
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function fetchNewQuestion(){
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$apiData = fetchFromBaiduApi();
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if($apiData === null){
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$cache = loadCache();
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if(!empty($cache)){
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$randomId = array_rand($cache);
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$result = formatQuestionItem($randomId, $cache[$randomId], count($cache));
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$result['from_cache'] = true;
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$result['api_status'] = 'failed';
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return $result;
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}
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return ['error' => 'API请求失败且无本地缓存'];
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}
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$cache = loadCache();
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$newCount = mergeToCache($apiData, $cache);
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$randomItem = $apiData[array_rand($apiData)];
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$result = formatQuestionItem(null, $randomItem, count($cache));
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$result['from_cache'] = false;
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$result['new_questions'] = $newCount;
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$result['api_status'] = 'success';
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return $result;
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}
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function formatQuestionItem($id, $item, $total, $fromCache = false, $newCount = 0){
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return [
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'id' => $id,
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'total' => $total,
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'question' => $item['question_content'],
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'author' => $item['type']['person'] ?? '',
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'type' => $item['type']['type'] ?? '',
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'grade' => $item['type']['grade'] ?? '',
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'dynasty' => $item['type']['dynasty'] ?? '',
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'options' => formatOptions($item['option_answers'] ?? []),
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'from_cache' => $fromCache,
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'new_questions' => $newCount
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];
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}
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function checkAnswer($id, $answer){
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$cache = loadCache();
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if(empty($cache)){
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return ['error' => '没有题目数据'];
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}
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if($id < 0 || $id >= count($cache)){
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return ['error' => '题目不存在'];
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}
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$item = $cache[$id];
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$correctAnswer = findAnswer($item['option_answers'] ?? []);
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$isCorrect = ($answer === $correctAnswer);
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return [
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'id' => $id,
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'correct' => $isCorrect,
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'your_answer' => $answer,
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'correct_answer' => $correctAnswer,
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'next_id' => $id + 1,
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'has_next' => $id + 1 < count($cache)
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];
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}
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function getHint($id){
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$cache = loadCache();
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if(empty($cache)){
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return ['error' => '没有题目数据'];
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}
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if($id < 0 || $id >= count($cache)){
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return ['error' => '题目不存在'];
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}
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$item = $cache[$id];
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return [
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'id' => $id,
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'hint' => '这是首描写' . ($item['type']['type'] ?? '') . '的诗，你在' . ($item['type']['grade'] ?? '') . '学过它。',
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'author' => $item['type']['person'] ?? '',
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'dynasty' => $item['type']['dynasty'] ?? ''
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];
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}
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function getQuestionList(){
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$cache = loadCache();
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if(empty($cache)){
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return ['total' => 0, 'list' => []];
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}
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$list = [];
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foreach($cache as $i => $item){
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$list[] = [
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'id' => $i,
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'question' => mb_substr($item['question_content'], 0, 30, 'UTF-8') . '...',
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'author' => $item['type']['person'] ?? '',
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'dynasty' => $item['type']['dynasty'] ?? ''
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];
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}
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return ['total' => count($list), 'list' => $list];
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}
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function refreshCache(){
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$apiData = fetchFromBaiduApi();
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if($apiData === null){
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return ['refreshed' => false, 'error' => 'API请求失败'];
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}
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$cache = loadCache();
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$newCount = mergeToCache($apiData, $cache);
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return ['refreshed' => true, 'total' => count($cache), 'new_questions' => $newCount];
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}
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function loadCache(){
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global $cacheData;
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if($cacheData !== null){
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return $cacheData;
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}
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if(!file_exists(CACHE_FILE)){
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$cacheData = [];
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return [];
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}
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$content = file_get_contents(CACHE_FILE);
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if($content === false){
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$cacheData = [];
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return [];
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}
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$data = json_decode($content, true);
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if(!is_array($data) || !isset($data['questions'])){
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$cacheData = [];
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return [];
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}
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$cacheData = $data['questions'];
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return $cacheData;
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}
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function saveCache($questions){
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global $cacheData;
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if(!is_dir(CACHE_DIR)){
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mkdir(CACHE_DIR, 0755, true);
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}
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$data = [
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'updated' => date('Y-m-d H:i:s'),
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'count' => count($questions),
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'questions' => $questions
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];
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$tempFile = CACHE_FILE . '.tmp';
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$result = file_put_contents($tempFile, json_encode($data, JSON_UNESCAPED_UNICODE), LOCK_EX);
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if($result !== false){
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rename($tempFile, CACHE_FILE);
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}
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$cacheData = $questions;
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}
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function fetchFromBaiduApi(){
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if(file_exists(API_LOCK_FILE)){
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$lockTime = intval(file_get_contents(API_LOCK_FILE));
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if(time() - $lockTime < API_INTERVAL){
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return null;
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}
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}
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file_put_contents(API_LOCK_FILE, time());
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$url = 'https://hanyu.baidu.com/hanyu/ajax/pingce_data';
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$ch = curl_init();
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curl_setopt_array($ch, [
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CURLOPT_URL => $url,
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_SSL_VERIFYPEER => false,
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CURLOPT_SSL_VERIFYHOST => false,
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CURLOPT_TIMEOUT => 5,
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CURLOPT_CONNECTTIMEOUT => 3,
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CURLOPT_USERAGENT => 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36',
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CURLOPT_HTTPHEADER => [
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'Accept: application/json',
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'Accept-Language: zh-CN,zh;q=0.9'
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]
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]);
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$response = curl_exec($ch);
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$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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if($httpCode !== 200 || empty($response)){
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return null;
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}
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$json = json_decode($response, true);
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if(!isset($json['data']) || !is_array($json['data'])){
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return null;
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}
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return $json['data'];
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}
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function mergeToCache($newData, &$existingCache){
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if(empty($newData)){
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return 0;
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}
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$existingKeys = [];
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foreach($existingCache as $item){
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$key = $item['question_content'] ?? '';
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$existingKeys[$key] = true;
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}
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$newCount = 0;
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foreach($newData as $item){
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$key = $item['question_content'] ?? '';
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if(!isset($existingKeys[$key])){
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$existingCache[] = $item;
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$existingKeys[$key] = true;
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$newCount++;
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}
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}
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if($newCount > 0){
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saveCache($existingCache);
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}
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return $newCount;
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}
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function formatOptions($options){
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$result = [];
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foreach($options as $i => $opt){
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$result[] = [
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'index' => $i + 1,
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'content' => $opt['answer_content'] ?? ''
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];
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}
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return $result;
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}
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function findAnswer($options){
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foreach($options as $i => $opt){
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if(($opt['is_standard_answer'] ?? 0) === 1){
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return (string)($i + 1);
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}
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}
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return '';
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}
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?>
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