<?php

declare(strict_types=1);

namespace app\common\library\scrm;

use Exception;

/**
 * 云控蜘蛛抽象基类（Node Headless 拦截 + 翻页 + 清洗）
 */
abstract class AbstractScrmSpider implements ScrmSpiderInterface
{
    public const MODE_FETCH = 'fetch';

    public const MODE_UI = 'ui_click';

    protected string $nodeHost;

    public function __construct(string $nodeHost = 'http://127.0.0.1:3001')
    {
        $this->nodeHost = rtrim($nodeHost, '/');
    }

    /** @return array<string, mixed> */
    abstract protected function getSpiderConfig(): array;

    /**
     * @param array<string, mixed>|null $countData
     */
    abstract protected function extractListTotalPages($listFirstPageData, $countData = null);

    /**
     * @return array<string, mixed>
     */
    abstract protected function buildListPageParams(int $page): array;

    /** @return array<string, mixed> */
    abstract protected function getUiPaginationConfig(): array;

    /**
     * @param mixed $detailData
     * @param array<int, mixed> $allListPagesData
     */
    abstract protected function parseToUnifiedData($detailData, array $allListPagesData): UnifiedScrmData;

    public function run(): UnifiedScrmData
    {
        $config = $this->getSpiderConfig();

        $listApi = (string) ($config['listApi'] ?? '');
        $detailApi = $config['detailApi'] ?? null;
        $countApi = $config['countApi'] ?? null;

        $apiUrlsToIntercept = [$listApi];
        if ($detailApi) {
            $apiUrlsToIntercept[] = $detailApi;
        }
        if ($countApi) {
            $apiUrlsToIntercept[] = $countApi;
        }

        $initResult = $this->requestNode('/api/auth-and-intercept', [
            'pageUrl'     => $config['pageUrl'],
            'apiUrls'     => $apiUrlsToIntercept,
            'authActions' => $config['authActions'] ?? [],
        ]);

        if (empty($initResult['success'])) {
            throw new Exception('初始化失败: ' . ($initResult['error'] ?? '未知'));
        }

        $interceptedApis = $initResult['interceptedApis'];
        $cookies = $initResult['cookies'];

        if (!isset($interceptedApis[$listApi])) {
            throw new Exception("致命错误：未能拦截到必须的列表接口 [{$listApi}]");
        }

        $detailData = $detailApi && isset($interceptedApis[$detailApi])
            ? $interceptedApis[$detailApi]['data'] : null;
        $countData = $countApi && isset($interceptedApis[$countApi])
            ? $interceptedApis[$countApi]['data'] : null;

        $listApiNode = $interceptedApis[$listApi];
        $allListPagesData = [$listApiNode['data']];

        $totalPages = $this->extractListTotalPages($listApiNode['data'], $countData);
        $mode = $config['paginationMode'] ?? self::MODE_FETCH;

        if ($totalPages > 1 || $totalPages === null) {
            if ($mode === self::MODE_FETCH && $totalPages !== null) {
                $paramList = [];
                for ($page = 2; $page <= $totalPages; $page++) {
                    $paramList[] = $this->buildListPageParams($page);
                }

                $fetchResult = $this->requestNode('/api/batch-fetch', [
                    'tasks' => [[
                        'apiPath'   => $listApi,
                        'fullUrl'   => $listApiNode['url'],
                        'headers'   => $listApiNode['headers'] ?? '',
                        'paramList' => $paramList,
                        'method'    => $config['listMethod'] ?? 'GET',
                    ]],
                    'cookies' => $cookies,
                ], 120);

                if (!empty($fetchResult['success'])) {
                    foreach ($fetchResult['results'][$listApi] as $pResult) {
                        if (!empty($pResult['success'])) {
                            $allListPagesData[] = $pResult['data'];
                        }
                    }
                }
            } elseif ($mode === self::MODE_UI) {
                $uiConfig = $this->getUiPaginationConfig();
                $firstPageData = $listApiNode['data'];
                $clicksToPerform = ($totalPages === null) ? 9999 : ($totalPages - 1);

                $uiResult = $this->requestNode('/api/ui-pagination', [
                    'apiUrl'          => $listApi,
                    'pageUrl'         => $config['pageUrl'],
                    'nextBtnSelector' => $uiConfig['nextBtnSelector'] ?? '',
                    'waitMs'          => $uiConfig['waitMs'] ?? 2000,
                    'clicksToPerform' => $clicksToPerform,
                    'cookies'         => $cookies,
                    'firstPageData'   => $firstPageData,
                    'authActions'     => $config['authActions'] ?? [],
                ], 1200);

                if (!empty($uiResult['success']) && !empty($uiResult['data'])) {
                    foreach ($uiResult['data'] as $pageData) {
                        $allListPagesData[] = $pageData;
                    }
                }
            }
        }

        return $this->parseToUnifiedData($detailData, $allListPagesData);
    }

    /**
     * @param array<string, mixed> $payload
     * @return array<string, mixed>
     */
    protected function requestNode(string $endpoint, array $payload, int $timeout = 60): array
    {
        $ch = curl_init($this->nodeHost . $endpoint);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload, JSON_UNESCAPED_UNICODE));
        curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
        curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
        $response = curl_exec($ch);
        if (curl_errno($ch)) {
            $err = curl_error($ch);
            curl_close($ch);
            throw new Exception($err);
        }
        curl_close($ch);
        $decoded = json_decode((string) $response, true);
        return is_array($decoded) ? $decoded : [];
    }
}