311 lines
11 KiB
PHP
311 lines
11 KiB
PHP
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<?php
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require_once __DIR__ . '/config.php';
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require_once __DIR__ . '/db.php';
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/**
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* 从规则表中查找是否有匹配的关键词回复
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*/
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function find_rule_reply(string $content): ?array
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{
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$pdo = get_pdo();
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// 先查完全匹配，再查包含匹配，简单 MVP 版本
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$sql = "SELECT * FROM auto_reply_rules WHERE is_active = 1 ORDER BY id ASC";
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$stmt = $pdo->query($sql);
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$rules = $stmt->fetchAll();
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$contentLower = mb_strtolower($content, 'UTF-8');
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error_log("=== 规则匹配开始 ===");
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error_log("用户消息原文: '{$content}'");
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error_log("转小写后: '{$contentLower}'");
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error_log("规则总数: " . count($rules));
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foreach ($rules as $rule) {
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$keyword = trim((string)$rule['keyword']);
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if ($keyword === '') {
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error_log("规则ID {$rule['id']}: 关键词为空，跳过");
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continue;
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}
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$kwLower = mb_strtolower($keyword, 'UTF-8');
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error_log("规则ID {$rule['id']}: 关键词='{$keyword}', 小写='{$kwLower}', 类型={$rule['match_type']}");
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if ($rule['match_type'] === 'equal') {
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if ($contentLower === $kwLower) {
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error_log("✓ 完全匹配成功！返回规则ID {$rule['id']}");
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return $rule;
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} else {
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error_log("✗ 完全匹配失败: '{$contentLower}' !== '{$kwLower}'");
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}
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} else { // contain
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if (mb_strpos($contentLower, $kwLower, 0, 'UTF-8') !== false) {
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error_log("✓ 包含匹配成功！返回规则ID {$rule['id']}");
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return $rule;
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} else {
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error_log("✗ 包含匹配失败");
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}
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}
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}
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error_log("未找到任何匹配规则");
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error_log("=== 规则匹配结束 ===");
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return null;
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}
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/**
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* 简单系统配置读取 / 写入
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*/
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function get_setting(string $key, $default = null)
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{
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$pdo = get_pdo();
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$stmt = $pdo->prepare("SELECT `value` FROM settings WHERE `key` = :k LIMIT 1");
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$stmt->execute([':k' => $key]);
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$row = $stmt->fetch();
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if (!$row) {
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return $default;
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}
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return $row['value'];
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}
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function set_setting(string $key, string $value): void
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{
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$pdo = get_pdo();
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$stmt = $pdo->prepare("
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INSERT INTO settings(`key`, `value`, updated_at)
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VALUES(:k, :v, NOW())
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ON DUPLICATE KEY UPDATE `value` = VALUES(`value`), updated_at = NOW()
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");
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$stmt->execute([':k' => $key, ':v' => $value]);
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}
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/**
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* 调用大模型 API（这里以 OpenAI 为例）
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* 如你用国内模型，可在此处替换调用逻辑。
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*/
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function call_ai(string $prompt, string $userId = ''): string
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{
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error_log("=== 调用AI开始 ===");
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error_log("用户消息: '{$prompt}'");
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error_log("AI提供商: " . AI_PROVIDER);
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if (AI_PROVIDER === 'mock') {
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return '【自动回复】你刚才说了：' . mb_substr($prompt, 0, 100, 'UTF-8');
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}
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// OpenAI 兼容接口
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if (AI_PROVIDER === 'openai') {
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$url = rtrim(OPENAI_API_BASE, '/') . '/chat/completions';
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$headers = [
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'Content-Type: application/json',
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'Authorization: ' . 'Bearer ' . OPENAI_API_KEY,
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];
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$payload = [
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'model' => OPENAI_MODEL,
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'messages' => [
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[
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'role' => 'system',
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'content' => '你是一个专业的微信私域运营助手，用简洁自然的中文回复用户。',
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],
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[
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'role' => 'user',
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'content' => $prompt,
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],
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],
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'temperature' => 0.7,
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'user' => $userId ?: null,
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];
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return do_llm_request($url, $headers, $payload);
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}
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// DeepSeek（OpenAI 兼容风格）
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if (AI_PROVIDER === 'deepseek') {
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$url = rtrim(DEEPSEEK_API_BASE, '/') . '/chat/completions';
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error_log("请求URL: {$url}");
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$headers = [
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'Content-Type: application/json',
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'Authorization: Bearer ' . DEEPSEEK_API_KEY,
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];
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$payload = [
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'model' => DEEPSEEK_MODEL,
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'messages' => [
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[
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'role' => 'system',
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'content' => '你是一个简洁高效的微信助手。回复要求：1.一句话回答，不超过50字 2.不要啰嗦重复 3.直接回答问题，不要客套话 4.不要使用emoji表情',
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],
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[
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'role' => 'user',
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'content' => $prompt,
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],
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],
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'temperature' => 0.7,
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'max_tokens' => 100, // 限制回复长度
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'user' => $userId ?: null,
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];
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return do_llm_request($url, $headers, $payload);
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}
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// Dify（对话型应用）
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if (AI_PROVIDER === 'dify') {
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$url = rtrim(DIFY_API_BASE, '/') . '/chat-messages';
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error_log("请求URL: {$url}");
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$headers = [
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'Content-Type: application/json',
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'Authorization: Bearer ' . DIFY_API_KEY,
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];
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$payload = [
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'inputs' => (object)[],
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'query' => $prompt,
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'response_mode' => 'streaming',
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'user' => $userId ?: DIFY_USER,
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'conversation_id' => '',
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];
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error_log("Dify payload: " . json_encode($payload, JSON_UNESCAPED_UNICODE));
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return do_dify_request($url, $headers, $payload);
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}
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// 其他厂商可在此扩展
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return 'AI_PROVIDER 未配置正确，请检查 config.php。';
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}
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/**
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* Dify 专用请求封装
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*/
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function do_dify_request(string $url, array $headers, array $payload): string
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{
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$ch = curl_init($url);
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curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
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curl_setopt($ch, CURLOPT_POST, true);
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curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload, JSON_UNESCAPED_UNICODE));
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_TIMEOUT, 60); // 增加超时时间，支持streaming
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
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curl_setopt($ch, CURLOPT_BUFFERSIZE, 128); // 小缓冲区，支持流式读取
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curl_setopt($ch, CURLOPT_NOPROGRESS, false); // 允许进度回调
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$response = curl_exec($ch);
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if ($response === false) {
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$err = curl_error($ch);
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curl_close($ch);
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error_log("cURL错误: {$err}");
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return '抱歉，Dify 服务暂时不可用，请稍后再试～（网络错误：' . $err . '）';
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}
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$statusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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error_log("HTTP状态码: {$statusCode}");
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error_log("响应内容长度: " . strlen($response));
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error_log("响应内容: {$response}");
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// 处理空响应
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if (empty($response)) {
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error_log("Dify返回空响应");
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return '抱歉，Dify 服务返回空响应，请检查API配置。';
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}
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// 处理streaming模式的响应（SSE格式）
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if (strpos($response, 'data:') !== false || strpos($response, 'event:') !== false) {
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error_log("检测到streaming模式响应");
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$lines = explode("\n", $response);
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$fullAnswer = '';
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foreach ($lines as $line) {
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$line = trim($line);
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if (strpos($line, 'data:') === 0) {
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$jsonStr = trim(substr($line, 5));
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if (empty($jsonStr) || $jsonStr === '[DONE]') {
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continue;
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}
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$data = json_decode($jsonStr, true);
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if (json_last_error() === JSON_ERROR_NONE) {
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// Dify streaming格式：{"event":"message","answer":"内容"}
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if (isset($data['answer'])) {
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$fullAnswer .= $data['answer'];
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}
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// 或者 {"event":"agent_message","answer":"内容"}
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if (isset($data['event']) && $data['event'] === 'agent_message' && isset($data['answer'])) {
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$fullAnswer .= $data['answer'];
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}
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}
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}
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}
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if (!empty($fullAnswer)) {
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error_log("Dify回复(streaming): {$fullAnswer}");
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error_log("=== 调用AI结束 ===");
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return trim($fullAnswer);
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}
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}
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// 处理blocking模式的响应（JSON格式）
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$data = json_decode($response, true);
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if ($statusCode >= 400 || !is_array($data)) {
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$msg = $data['message'] ?? '未知错误';
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error_log("Dify API错误: {$msg}");
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return '抱歉，Dify 服务请求失败，请稍后再试～（状态码 ' . $statusCode . '：' . $msg . '）';
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}
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// Dify 返回格式：{"answer": "回复内容", "conversation_id": "xxx"}
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$content = $data['answer'] ?? '';
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if (!$content) {
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error_log("Dify返回内容为空");
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error_log("完整响应: " . print_r($data, true));
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return '抱歉，Dify 暂时没有合理的回复。';
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}
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error_log("Dify回复(blocking): {$content}");
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error_log("=== 调用AI结束 ===");
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return trim($content);
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}
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/**
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* 通用大模型 HTTP 请求封装
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*/
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function do_llm_request(string $url, array $headers, array $payload): string
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{
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$ch = curl_init($url);
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curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
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curl_setopt($ch, CURLOPT_POST, true);
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curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload, JSON_UNESCAPED_UNICODE));
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_TIMEOUT, 60); // 增加超时时间，支持streaming
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
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curl_setopt($ch, CURLOPT_BUFFERSIZE, 128); // 小缓冲区，支持流式读取
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curl_setopt($ch, CURLOPT_NOPROGRESS, false); // 允许进度回调
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$response = curl_exec($ch);
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if ($response === false) {
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$err = curl_error($ch);
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curl_close($ch);
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error_log("cURL错误: {$err}");
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return '抱歉，AI 服务暂时不可用，请稍后再试～（网络错误：' . $err . '）';
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}
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$statusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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error_log("HTTP状态码: {$statusCode}");
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error_log("响应内容: {$response}");
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$data = json_decode($response, true);
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if ($statusCode >= 400 || !is_array($data)) {
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$msg = $data['error']['message'] ?? '未知错误';
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error_log("API错误: {$msg}");
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return '抱歉，AI 服务请求失败，请稍后再试～（状态码 ' . $statusCode . '：' . $msg . '）';
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}
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$content = $data['choices'][0]['message']['content'] ?? '';
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if (!$content) {
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error_log("AI返回内容为空");
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return '抱歉，AI 暂时没有合理的回复。';
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}
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error_log("AI回复: {$content}");
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error_log("=== 调用AI结束 ===");
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return trim($content);
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}
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