<?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',
        'uploadFile' => '/files',
    ];


    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';
        $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);
        $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;
    }

    /**
     * 文件上传和处理（支持图像和文档）
     */
    public function uploadAndProcessFile($filePath, $prompt = '请处理这个文件') {
        // 首先上传文件获取文件ID
        $fileId = $this->uploadFile($filePath);

        if (!$fileId) {
            return ['error' => '文件上传失败'];
        }

        // 使用文件ID进行对话
        $messages = [
            [
                'role' => 'user',
                'content' => $prompt,
                'file_ids' => [$fileId]
            ]
        ];

        return $this->chat($messages);
    }

    /**
     * 上传文件到DeepSeek
     */
    public function uploadFile($imageUrl) {
        $uploadUrl = 'http://127.0.5.12/api/upload/image';
//        $uploadUrl = $this->apiUrl.$this->apiUrls['uploadFile'];
        $filePath = ATTACHMENT_PATH.get_image_path($imageUrl);
        if (!file_exists($filePath)) {
            return false;
        }

        $mimeType = mime_content_type($filePath);
        $fileName = basename($filePath);

        // 准备文件数据
        $fileData = [
            'file' => new \CURLFile($filePath, $mimeType, $fileName),
            'purpose' => 'vision' // 或者 'assistants'，根据用途
        ];

        $ch = curl_init();
        curl_setopt_array($ch, [
            CURLOPT_URL => $uploadUrl,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POST => true,
            CURLOPT_POSTFIELDS => $fileData,
            CURLOPT_HTTPHEADER => [
                'Authorization: Bearer ' . $this->apiKey
            ],
            CURLOPT_TIMEOUT => 30
        ]);

        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        dump($response);
        curl_close($ch);

        if ($httpCode === 200) {
            $result = json_decode($response, true);
            return $result['id'] ?? false;
        }

        return false;
    }

    /**
     * 上传图片
     * @param $image
     * @return false
     */
    public function analyzeImageByFile($fileIds, $prompt='请分析读取这张图片内容')
    {
        if(empty($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
        ];

//        $filePath = ATTACHMENT_PATH.get_image_path($imageUrl);
//        $imageData = base64_encode(file_get_contents($filePath));
//        $mineType = mime_content_type($filePath);


        $data = [
            'model'=> 'deepseek-reasoner',
            'messages'=> [
                [
                    'role' => 'user',
                    'content' => $prompt,
                    'file_ids'=> ['file-bc202f5a-0894-478c-b22c-c79c9f8b8298']
                ]
            ],
//            'stream' => false, //false 非流  true//流返回，需要前端追加和保持长连接
//            'response_format'=>[
//                'type'=> 'text' //返回格式（text,json_object）
//            ],
            "max_tokens"=>2048, //最大返回token数
        ];


        $model = 'deepseek-reasoner';
        $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);
        var_dump($result);
    }

    /**
     * 上传Base64图片
     * @param $image
     * @return false
     */
    public function analyzeImageByBase64($imageUrl, $prompt='请分析读取这张图片内容')
    {
        if(empty($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
        ];

        $filePath = ATTACHMENT_PATH.get_image_path($imageUrl);
        $imageData = base64_encode(file_get_contents($filePath));
        $mineType = mime_content_type($filePath);


        $data = [
            'purpose'=>'vision',
            'file'=> $imageData,
            'filename'=> basename($filePath),
            'mine_type'=> $mineType
        ];


        $model = 'uploadFile';
        $url = $this->apiUrl.$this->apiUrls['uploadFile'];
        $this->saveLog("caches:dkApi:{$model}:request_1_".date('YmdHis'), ['url'=>$url,'data'=>$data]);
        $result = aiRequest($url, json_encode($data), 60, $headers);
        dump($result);
        var_dump($result);
    }


    /**
     * 上传图片
     * @param $image
     * @return false
     */
    public function analyzeImage($imageUrl, $prompt='请分析读取这张图片内容')
    {
        if(empty($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
        ];

        $filePath = ATTACHMENT_PATH.get_image_path($imageUrl);
        $imageData = base64_encode(file_get_contents($filePath));
        $mineType = mime_content_type($filePath);


        $data = [
            'model'=> 'deepseek-reasoner',
            'messages'=> [
                [
                    'role' => 'user',
                    'content' => [
                        [
                            'type'=>'text',
                            'text'=> $prompt
                        ],
                        [
                            'type'=>'image_url',
                            'image_url'=> [
                                'url'=>"data:{$mineType};base64,{$imageData}"
                            ]
                        ]
                    ]
                ]
            ],
//            'stream' => false, //false 非流  true//流返回，需要前端追加和保持长连接
//            'response_format'=>[
//                'type'=> 'text' //返回格式（text,json_object）
//            ],
            "max_tokens"=>2048, //最大返回token数
        ];


        $model = 'deepseek-reasoner';
        $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);
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);
            $ocr = new TesseractOCR(ATTACHMENT_PATH.$path);
            $data = $ocr->psm(3)
                ->horc()
                ->lang('chi_sim','eng','chi_tra')
                ->run(60);
            return $data?str_replace("\n",'\n', $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);
        }
    }
}