<?php

namespace common\components;

/**
 * 链科云打印 v3 API 客户端（参考 cloud_printer_demo/php）
 */
class CloudPrinterApiException extends \Exception
{
}

class CloudPrinterHttpException extends \Exception
{
}

class CloudPrinter
{
    /** @var string */
    public $apiKey = '';

    /** @var string */
    public $server = 'https://cloud.liankenet.com/';

    /** @var int */
    public $timeout = 10;

    /** @var bool */
    public $debug = false;

    /** @var string */
    public $deviceId = '';

    /** @var string */
    public $deviceKey = '';

    public function __construct($apiKey, $deviceId, $deviceKey, $debug = false, $timeout = 10, $server = '')
    {
        $this->apiKey = (string)$apiKey;
        $this->deviceId = (string)$deviceId;
        $this->deviceKey = (string)$deviceKey;
        $this->debug = (bool)$debug;
        $this->timeout = max(1, intval($timeout));
        if (!empty($server)) {
            $this->server = rtrim((string)$server, '/') . '/';
        }
    }

    /**
     * 统一 HTTP 请求
     */
    private function requests($method, $endpoint, $fields = [], $contentType = 'application/json')
    {
        $curl = curl_init();
        $headers = ['ApiKey: ' . $this->apiKey];
        $postFields = $fields;

        if ($method === 'POST') {
            if ($contentType === 'application/json') {
                $postFields = json_encode($fields, JSON_UNESCAPED_UNICODE);
                $headers[] = 'Content-Type: application/json';
            }
            // multipart/form-data 由 curl 自动带 boundary，不能手动设 Content-Type
        }

        curl_setopt_array($curl, [
            CURLOPT_URL => $this->server . ltrim($endpoint, '/'),
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_MAXREDIRS => 1,
            CURLOPT_TIMEOUT => $this->timeout,
            CURLOPT_FOLLOWLOCATION => true,
            CURLINFO_HEADER_OUT => $this->debug,
            CURLOPT_VERBOSE => $this->debug,
            CURLOPT_CUSTOMREQUEST => $method,
            CURLOPT_POSTFIELDS => $postFields,
            CURLOPT_HTTPHEADER => $headers,
        ]);

        $response = curl_exec($curl);
        $info = curl_getinfo($curl);
        $errno = curl_errno($curl);
        $error = curl_error($curl);
        curl_close($curl);

        if ($this->debug) {
            \Yii::info('链科云打印请求: ' . json_encode($info, JSON_UNESCAPED_UNICODE), __METHOD__);
        }

        if ($response === false) {
            throw new CloudPrinterHttpException($error ?: 'curl 请求失败', $errno);
        }
        if (intval($info['http_code'] ?? 0) !== 200) {
            throw new CloudPrinterHttpException('HTTP ' . ($info['http_code'] ?? 0), intval($info['http_code'] ?? 0));
        }

        $data = json_decode($response);
        if (!is_object($data)) {
            throw new CloudPrinterApiException('接口返回格式错误');
        }
        if (intval($data->code ?? 0) !== 200) {
            throw new CloudPrinterApiException($data->msg ?? '链科云打印接口错误', intval($data->code ?? 0));
        }

        return $data;
    }

    /** 获取设备信息 */
    public function getDeviceInfo()
    {
        $data = [
            'deviceId' => $this->deviceId,
            'deviceKey' => $this->deviceKey,
        ];
        $response = $this->requests('GET', 'api/device/device_info?' . http_build_query($data));
        return $response->data;
    }

    /** 异步刷新设备信息（含打印机列表） */
    public function asyncRefreshDeviceInfo()
    {
        $data = [
            'deviceId' => $this->deviceId,
            'deviceKey' => $this->deviceKey,
        ];
        return $this->requests('GET', 'api/device/async_refresh_device_info?' . http_build_query($data));
    }

    /** 获取打印机列表 */
    public function getPrinterList()
    {
        $data = [
            'deviceId' => $this->deviceId,
            'deviceKey' => $this->deviceKey,
        ];
        $response = $this->requests('GET', 'api/external_api/printer_list?' . http_build_query($data));
        return $response->data->row ?? [];
    }

    /** 获取打印机参数 */
    public function getPrinterParams($printerModel)
    {
        $data = [
            'deviceId' => $this->deviceId,
            'deviceKey' => $this->deviceKey,
            'printerModel' => $printerModel,
        ];
        $response = $this->requests('GET', 'api/print/printer_params?' . http_build_query($data));
        return $response->data;
    }

    /**
     * 发起打印任务（文件上传）
     *
     * @param string $devicePort USB 口
     * @param string $printerModel 驱动名
     * @param int $paperSize 纸张代码，A4 一般为 9
     * @param \CURLFile $file 待打印文件
     * @param array $optionalArray 额外参数（份数、颜色等）
     */
    public function addJob($devicePort, $printerModel, $paperSize, $file, $optionalArray = [])
    {
        $data = array_merge([
            'deviceId' => $this->deviceId,
            'deviceKey' => $this->deviceKey,
            'devicePort' => $devicePort,
            'printerModel' => $printerModel,
            'dmPaperSize' => $paperSize,
            'jobFile' => $file,
        ], $optionalArray);

        $response = $this->requests('POST', 'api/print/job', $data, 'multipart/form-data');
        \Yii::info("发起打印任务",json_encode($response->data));
        return $response->data;
    }

    /**
     * 通过本地文件路径发起打印
     */
    public function addJobByPath($devicePort, $printerModel, $paperSize, $filePath, $optionalArray = [])
    {
        $realPath = realpath($filePath);
        if ($realPath === false || !is_file($realPath)) {
            throw new CloudPrinterApiException('打印文件不存在');
        }
        $mime = function_exists('mime_content_type') ? mime_content_type($realPath) : '';
        if (empty($mime)) {
            $mime = 'application/octet-stream';
        }
        $file = new \CURLFile($realPath, $mime, basename($realPath));
        return $this->addJob($devicePort, $printerModel, $paperSize, $file, $optionalArray);
    }

    /** 查询任务状态 */
    public function getJobStatus($devicePort, $taskId)
    {
        $data = [
            'deviceId' => $this->deviceId,
            'deviceKey' => $this->deviceKey,
            'devicePort' => $devicePort,
            'task_id' => $taskId,
        ];
        $response = $this->requests('GET', 'api/print/job?' . http_build_query($data));
        return $response->data;
    }

    /** 取消任务 */
    public function cancelJob($devicePort, $taskId)
    {
        $data = [
            'deviceId' => $this->deviceId,
            'deviceKey' => $this->deviceKey,
            'devicePort' => $devicePort,
            'task_id' => $taskId,
        ];
        return $this->requests('DELETE', 'api/print/job?' . http_build_query($data));
    }
}