<?php

namespace App\Services;

use thiagoalessio\TesseractOCR\TesseractOCR;

/**
 * DeepSeek服务管理-服务类
 * @author laravel开发员
 * @since 2020/11/11
 * @package App\Services
 */
class DeepSeekService extends BaseService
{
    // 静态对象
    protected static $instance = null;

    protected $debug = true;
    protected $expireTime = 7200; // 缓存日志时长
    protected $apiKey = '';
    protected $apiName = '';
    protected $apiurl = '';
    protected $chaturl = 'https://chat.deepseek.com/api';

    // 接口地址
    protected $apiUrls = [
        // 授权登录
        'deepseek-chat' => '/chat/completions',
        'deepseek-reasoner' => '/chat/completions',
        'upload' => '/v1/upload',
        'generations' => '/v1/images/generations',
        'generate' => '/v1/text/generate',
        'upload_file' => '/v0/file/upload_file',
    ];


    public function __construct()
    {
        set_time_limit(0);
        $this->apiUrl = ConfigService::make()->getConfigByCode('dk_base_url');
        $this->apiKey = ConfigService::make()->getConfigByCode('dk_api_key');
        $this->apiName = ConfigService::make()->getConfigByCode('dk_api_name');
    }

    /**
     * 静态入口
     * @return static|null
     */
    public static function make()
    {
        if (!self::$instance) {
            self::$instance = new static();
        }

        return self::$instance;
    }


    /**
     * AI 分析接口
     * @param $params
     * @param string $model
     * @return array|false|mixed
     */
    public function apiRequest($params, $model='deepseek-chat')
    {

        if(empty($this->apiUrl) || empty($this->apiKey) || empty($this->apiName)){
            $this->error = 'AI接口参数未配置';
            return false;
        }

        $headers = [
            'Content-Type: application/json',
            'Accept: application/json',
            'Authorization: Bearer ' . $this->apiKey
        ];
        $answer = isset($params['answer'])? $params['answer'] : '';
        $topic = isset($params['topic'])? $params['topic'] : '';
        $score = isset($params['score'])? $params['score'] : 0;
        $type = isset($params['type'])? $params['type'] : 1; // 1-文本，2-图片
        $content = '你是一个答题高手，请给描述中问题的答案评分，并尝试按 JSON:{"score": 8,"topic":"this is topic content","analysis":"this is topic analysis"}返回';
        $message = "请给题目【{$topic}】总分{$score}的答案【{$answer}】评分？";
        $format = 'json_object';
        if($type == 2){
            $content = '你是一个识图专家，请读取图中中英文数字或符号内容，并尝试按 JSON:{"content":"this is photo content"}';
//            $format = 'text';
//            $content = '你是一个答题高手，请给描述中问题的答案评分，并尝试按 JSON:{"score": 8,"topic":"this is topic content","answer":"this is answer content","analysis":"this is topic analysis"}返回';
            preg_match("/\.(jpg|jpeg|png)/", $answer, $extData);
            $ext = isset($extData[0])? $extData[0] : 'jpg';
            $ext = $ext=='png'? 'png' : 'jpeg';
            $filePath = ATTACHMENT_PATH.get_image_path($answer);
            $image = file_get_contents($filePath);
            $base64 = base64_encode($image);
            $base64 = "data:image/{$ext};base64,{$base64}";
            $message = "请读取图片【{$base64}】内容？";
//            $message = "请给总分为{$score}的题目【{$topic}】针对图片内【{$base64}】答案评分？";
        }
        $data = [
            'model'=> $model,
            'messages'=> [
                [
                    'role' => 'system',
                    'content' => $content
                ],
                [
                    'role' => 'user',
                    'content' => $message
                ],
            ],
            'stream' => false, //false 非流  true//流返回，需要前端追加和保持长连接
            'response_format'=>[
                'type'=> $format //返回格式（text,json_object）
            ],
            "max_tokens"=>2048, //最大返回token数
        ];


        $url = $this->apiUrl.$this->apiUrls[$model];
        $this->saveLog("caches:dkApi:{$model}:request_1_".date('YmdHis'), ['url'=>$url,'data'=>$data]);
        $result = aiRequest($url, json_encode($data), 60, $headers);
        dump($result);
        $result = $result? json_decode(trim($result),true) : [];
        if(empty($result)){
            $this->error = '答案验证失败';
            return false;
        }
        $this->saveLog("caches:dkApi:{$model}:request_2_".date('YmdHis'), ['url'=>$url,'data'=>$data,'result'=>$result]);

        $choices = isset($result['choices'])? $result['choices'] : [];
        $choiceData = isset($choices[0]['message'])? $choices[0]['message'] : [];
        $choiceContent = isset($choiceData['content'])? $choiceData['content'] : '';
        $content = $choiceContent? str_replace('\n','', $choiceContent) : '';
        $content = $content? preg_replace("/^```json/",'', $content) : '';
        $content = $content? rtrim($content,'```') : '';
        $content = $content? json_decode($content, true) : [];
        return $content;
    }


    /**
     * 上传图片
     * @param $image
     * @return false
     */
    public function upload($image)
    {
        if(empty($this->apiUrl) || empty($this->apiKey) || empty($this->apiName)){
            $this->error = 'AI接口参数未配置';
            return false;
        }

        $headers = [
            'Content-Type: application/json',
//            'Accept: application/json',
            'Authorization: Bearer ' . $this->apiKey
        ];


        $filePath = ATTACHMENT_PATH.get_image_path($image);
        dump($filePath);

//        $url = $this->apiUrl.$this->apiUrls['generate'];
        $url = $this->chaturl.$this->apiUrls['upload_file'];

        var_dump(basename($image));
//        $file = fopen($url, 'rb');
        $filePath = ATTACHMENT_PATH.get_image_path($filePath);
        $image = file_get_contents($filePath);
        $base64 = base64_encode($image);
        $base64 = "data:image/jpeg;base64,{$base64}";
//        $file = new \CURLFile(realpath($filePath), 'application/octet-stream', basename($image));
        $data = ['image' => $base64];
//        $data = [
//            "prompt"=> "解释量子计算的基本原理",
//            "max_tokens"=> 200,
//            "temperature"=>0.7
//        ];
        $data = [
            'files'=> $data
        ];
        var_dump($url);
        var_dump($data);
        $result = aiRequest($url, '', 10, $headers);
var_dump($result);
    }

    /**
     * 生成图片
     * @param $image
     * @return false
     */
    public function makeImage($prompt)
    {
        if(empty($this->apiUrl) || empty($this->apiKey) || empty($this->apiName)){
            $this->error = 'AI接口参数未配置';
            return false;
        }

        $headers = [
            'Content-Type: application/json',
            'Accept: application/json',
            'Authorization: Bearer ' . $this->apiKey
        ];
        $url = $this->apiUrl.$this->apiUrls['deepseek-chat'];
        $data = [
            'prompt'=> $prompt,
            'model'=>'deepseek-image',
            'size'=> '1024x1024',
        ];
        $result = aiRequest($url, json_encode($data), 10, $headers);
        var_dump($result);
    }

    /**
     * 获取题目内容
     * @param $imageUrl
     * @return false
     */
    public function getImageTopicData($imageUrl)
    {
        if(empty($imageUrl)){
            return false;
        }
        // 图片获取数据
        if(preg_match("/(images|temp)/", $imageUrl)){
            $path = get_image_path($imageUrl);
//            foreach((new TesseractOCR())->availableLanguages() as $lang) echo $lang;
            $ocr = new TesseractOCR(ATTACHMENT_PATH.$path);

            $data = $ocr->lang('chi_sim','eng','chi_tra')
                ->allowlist(range('a', 'z'), range('A', 'Z'), range(0, 9), '-_@')
                ->run(30);
            var_dump($data);
            return $data;
        }

        return $imageUrl;
    }

    /**
     * 保存缓存日志
     * @param $cacheKey
     * @param $message
     * @param $expireTime
     */
    public function saveLog($cacheKey, $message, $expireTime=0, $open=false)
    {
        if(env('APP_DEBUG') || $open){
            RedisService::set($cacheKey, $message, $expireTime||$this->expireTime);
        }
    }
}