96 lines
3.3 KiB
PHP
96 lines
3.3 KiB
PHP
<?php
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namespace App\Service\common\ai;
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use App\BaseApp\BaseService;
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use GuzzleHttp\Client;
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use GuzzleHttp\Exception\GuzzleException;
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use Throwable;
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/**
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* DeepSeek Agent（OpenAI 兼容协议）
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* 每次调用从 AiRuntimeConfigService 取最新平台/密钥/模型
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*/
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class DeepSeekAiAgent extends BaseService implements AiAgentInterface
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{
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public function __construct()
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{
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// Agent 本身不读用户态，避免工厂链路强制鉴权
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$this->isAuth = false;
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parent::__construct();
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}
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public function provider(): string
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{
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return 'deepseek';
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}
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/**
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* 调用 DeepSeek chat completions
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*/
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public function chatCompletions(array $messages, array $options = []): AiChatResult
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{
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$cfg = AiRuntimeConfigService::getInstance()->resolve($this->provider());
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$apiUrl = (string) ($cfg['api_url'] ?? '');
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$apiKey = (string) ($cfg['api_key'] ?? '');
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$defaultModel = (string) ($cfg['model'] ?? 'deepseek-chat');
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$timeout = (float) ($cfg['timeout'] ?? 60);
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if ($apiKey === '') {
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$this->utils->errorThrow('DeepSeek 暂未开通（请在「AI密钥管理」或 .env DEEPSEEK_API_KEY 配置）');
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}
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if ($apiUrl === '') {
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$this->utils->errorThrow('未配置 DeepSeek 接口地址');
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}
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if (empty($messages)) {
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$this->utils->errorThrow('AI 对话消息不能为空');
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}
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$model = (string) ($options['model'] ?? $defaultModel);
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$body = [
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'model' => $model,
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'messages' => array_values($messages),
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'stream' => false,
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];
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foreach (['temperature', 'max_tokens', 'top_p'] as $key) {
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if (array_key_exists($key, $options)) {
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$body[$key] = $options[$key];
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}
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}
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try {
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$client = new Client([
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'timeout' => $timeout,
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'connect_timeout' => min(10.0, $timeout),
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]);
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$response = $client->request('POST', $apiUrl, [
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'headers' => [
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'Authorization' => 'Bearer ' . $apiKey,
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'Content-Type' => 'application/json',
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],
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'json' => $body,
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]);
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$raw = json_decode((string) $response->getBody(), true);
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if (!is_array($raw)) {
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$this->utils->errorThrow('DeepSeek 返回非 JSON');
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}
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$content = (string) data_get($raw, 'choices.0.message.content', '');
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if ($content === '') {
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$errMsg = (string) ($raw['error']['message'] ?? '');
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$this->utils->errorThrow($errMsg !== '' ? ('DeepSeek 调用失败：' . $errMsg) : 'DeepSeek 未返回有效内容');
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}
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$usage = is_array($raw['usage'] ?? null) ? $raw['usage'] : [];
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return new AiChatResult(
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$content,
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$raw,
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$this->provider(),
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$model,
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$usage,
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(int) ($cfg['api_key_id'] ?? 0)
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);
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} catch (Throwable $e) {
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if ($e instanceof GuzzleException) {
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$this->utils->errorThrow('DeepSeek 请求失败：' . $e->getMessage());
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}
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throw $e;
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}
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}
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}
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