<?php

namespace App\Iot\Linkos;

use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Http;
use RuntimeException;

class HttpClient
{
    public const ENDPOINT_URL = 'http://service.easylinkin.com';

    public function __construct(
        protected readonly string $apiKey,
        protected readonly string $apiSecret,
    ) {
    }

    /**
     * 获取设备的历史数据
     *
     * @param string $deviceId
     * @param \Illuminate\Support\Carbon $start
     * @param \Illuminate\Support\Carbon $end
     * @param int $page
     * @param int $perPage
     * @return array
     */
    public function getDeviceFlowList(string $deviceId, Carbon $start, Carbon $end, int $page = 1, int $perPage = 50): array
    {
        $result = $this->post('/api/deviceFlow/v1/list', [
            'device_id' => $deviceId,
            'start_time' => $start->unix() * 1000,
            'end_time' => $end->unix() * 1000,
            'pageable' => [
                'page' => $page - 1,
                'size' => $perPage,
            ],
        ]);

        return $result['data'];
    }

    /**
     * @param string $url
     * @param array $data
     * @return array
     */
    public function post(string $url, array $data = []): array
    {
        return $this->request('POST', $url, [
            'json' => $data,
        ]);
    }

    /**
     * @param string $method
     * @param string $url
     * @param array $options
     * @return array
     *
     * @throws \Illuminate\Http\Client\RequestException
     * @throws \RuntimeException
     */
    public function request(string $method, string $url, array $options = []): array
    {
        $nonce = $this->nonce();

        $timestamp = now()->getTimestampMs();

        /** @var \Illuminate\Http\Client\Response */
        $response = Http::withHeaders([
            'Content-Type' => 'application/json',
            'api-key' => $this->apiKey,
            'Nonce' => $nonce,
            'Timestamp' => $timestamp,
            'Signature' => $this->sign(compact('nonce', 'timestamp')),
        ])->baseUrl(self::ENDPOINT_URL)->send($method, $url, $options);

        $result = $response->throw()->json();

        if (data_get($result, 'success') !== true) {
            throw new RuntimeException(data_get($result, 'msg', '出错啦！'));
        }

        return $result;
    }

    /**
     * @param array $data
     * @return string
     */
    protected function sign(array $data): string
    {
        return sha1(
            sprintf(
                '%s%s%s',
                $data['nonce'] ?? '',
                $data['timestamp'] ?? '',
                $this->apiSecret
            )
        );
    }

    protected function nonce(): string
    {
        $nonce = '';

        for ($i = 0; $i < 8; $i++) {
            $nonce .= mt_rand(0, 9);
        }

        return $nonce;
    }
}