<?php

namespace addons\shopro_wechat_trade\library;

use addons\shopro\library\Wechat;
use fast\Http;
use think\Log;

class WxTradeClient
{
    protected $wechat;

    public function __construct()
    {
        $this->wechat = new Wechat('wxMiniProgram');
    }

    public function getAccessToken()
    {
        $token = $this->wechat->getAccessToken();
        if (is_array($token) && !empty($token['access_token'])) {
            return $token['access_token'];
        }
        if (is_string($token)) {
            return $token;
        }
        throw new \RuntimeException('无法获取小程序 access_token');
    }

    public function postJson($path, array $body)
    {
        $token = $this->getAccessToken();
        $url = 'https://api.weixin.qq.com' . $path . '?access_token=' . urlencode($token);
        $headers = ['Content-Type: application/json'];
        $options = [CURLOPT_HTTPHEADER => $headers];
        $result = Http::sendRequest($url, json_encode($body, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES), 'POST', $options);
        if (!isset($result['ret']) || !$result['ret']) {
            throw new \RuntimeException('微信 API 请求失败: ' . ($result['msg'] ?? 'unknown'));
        }
        $decoded = json_decode($result['msg'], true);
        if (!is_array($decoded)) {
            throw new \RuntimeException('微信 API 响应解析失败');
        }
        return $decoded;
    }

    public function getJson($path, array $query = [])
    {
        $token = $this->getAccessToken();
        $query['access_token'] = $token;
        $url = 'https://api.weixin.qq.com' . $path . '?' . http_build_query($query);
        $result = Http::sendRequest($url, [], 'GET');
        if (!isset($result['ret']) || !$result['ret']) {
            throw new \RuntimeException('微信 API 请求失败: ' . ($result['msg'] ?? 'unknown'));
        }
        $decoded = json_decode($result['msg'], true);
        if (!is_array($decoded)) {
            throw new \RuntimeException('微信 API 响应解析失败');
        }
        return $decoded;
    }

    public function callOrThrow(array $response, $action = '微信接口')
    {
        $errcode = intval($response['errcode'] ?? 0);
        if ($errcode !== 0) {
            $msg = ($response['errmsg'] ?? 'unknown') . ' (' . $errcode . ')';
            Log::write('[shopro_wechat_trade] ' . $action . ' fail: ' . $msg);
            throw new \RuntimeException($action . '失败: ' . $msg);
        }
        return $response;
    }
}