<?php
namespace app\api\controller;
use app\api\controller\Base;


class Scopus extends Base
{

    private $sApiKey = '434dcaf0e787b8676745c97687184f71';

    // 获取h指数
    public function getHindex($aParam = [])
    {

        $aParam = empty($aParam) ? $this->request->post() : $aParam;
        // 获取输入参数
        $sAuthorName = empty($aParam['author_name']) ? '' : $aParam['author_name'];
        $affiliation = empty($aParam['affiliation']) ? '' : $aParam['affiliation'];

        // 验证输入
        if (empty($sAuthorName) || empty($affiliation)) {
            return json_encode(['status' => 2,'msg' => '']);
        }


        $url = "https://api.elsevier.com/content/search/author?query=affil(beijing)&count=1";
        
        $ch = curl_init();
        curl_setopt_array($ch, [
            CURLOPT_URL => $url,
            CURLOPT_HTTPHEADER => [
                'X-ELS-APIKey: ' . $this->sApiKey,
                'Accept: application/json'
            ],
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_TIMEOUT => 15,
            CURLOPT_FAILONERROR => true
        ]);

        $response = curl_exec($ch);
var_dump(curl_getinfo($ch));exit;
        // 第一步：检索作者ID
        $url = "https://api.elsevier.com/content/search/author";
        $params = [
            'query' => "AUTHFIRST({$sAuthorName}) AND AFFIL({$affiliation})",
            'count' => 1
        ];
var_dump($this->sApiKey);exit();
        $ch = curl_init();
        curl_setopt_array($ch, [
            CURLOPT_URL => $url . '?' . http_build_query($params),
            CURLOPT_HTTPHEADER => [
                'X-ELS-APIKey: ' . $this->sApiKey,
                'Accept: application/json'
            ],
            CURLOPT_RETURNTRANSFER => true,
            // CURLOPT_TIMEOUT => 15,
            CURLOPT_FAILONERROR => true
        ]);

        $response = curl_exec($ch);
echo '<pre>';var_dump($response,curl_getinfo($ch));exit;
        if (curl_errno($ch)) {
            throw new \Exception('Scopus API错误: ' . curl_error($ch));
        }

        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($httpCode !== 200) {
            throw new \Exception("Scopus API返回错误: HTTP {$httpCode}");
        }

        $data = json_decode($response, true);
        if (empty($data['search-results']['entry'][0]['dc:identifier'])) {
            throw new \Exception('未找到匹配的作者');
        }

        // 提取作者ID（从"AUTHOR_ID:7004212771"中分离）
        $identifier = $data['search-results']['entry'][0]['dc:identifier'];
        $authorId = explode(':', $identifier)[1];

        // 第二步：获取作者指标
        $url = "https://api.elsevier.com/content/author/author_id/{$authorId}?view=METRICS";
        $ch = curl_init();
        curl_setopt_array($ch, [
            CURLOPT_URL => $url,
            CURLOPT_HTTPHEADER => [
                'X-ELS-APIKey: ' . $apiKey,
                'Accept: application/json'
            ],
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_TIMEOUT => 15,
            CURLOPT_FAILONERROR => true
        ]);

        $response = curl_exec($ch);
        if (curl_errno($ch)) {
            throw new \Exception('指标API错误: ' . curl_error($ch));
        }

        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($httpCode !== 200) {
            throw new \Exception("指标API返回错误: HTTP {$httpCode}");
        }

        $data = json_decode($response, true);
        if (empty($data['author-retrieval-response'][0]['h-index'])) {
            throw new \Exception('未找到h指数数据');
        }

        // 提取其他作者信息
        $author = $data['author-retrieval-response'][0];
        $metrics = [
            'h_index' => $author['h-index'],
            'citation_count' => $author['citation-count'] ?? '未知',
            'document_count' => $author['document-count'] ?? '未知',
            'coauthors_count' => $author['coauthor-count'] ?? '未知',
            'affiliation_current' => $author['affiliation-current']['affiliation']['ip-doc']['afdispname'] ?? '未知'
        ];

        return json([
            'status' => 'success',
            'author_id' => $authorId,
            'author_name' => $author['author-profile']['preferred-name']['ce:indexed-name'] ?? '未知',
            'metrics' => $metrics
        ]);

        
    }
}