<?php

declare(strict_types=1);

namespace app\miniapi\service;

use app\miniapi\exception\ApiException;
use support\Log;

/**
 * smsbao.com HTTP API. The account password is passed through untouched; when it looks like a
 * 32 character digest the provider treats it as the MD5 password. Responses are plain status
 * numbers and are never echoed to the caller.
 */
final class SmsbaoSender implements SmsSender
{
    private const FAILURES = [
        '-1' => '参数不全',
        '-2' => '账户或密码错误',
        '-3' => '账户余额不足',
        '-4' => '账户余额已冻结',
        '30' => '验证码间隔太短',
        '40' => '账户不存在',
        '41' => '内容包含敏感词',
        '42' => '账户余额不足',
    ];

    public function send(string $phone, string $content): void
    {
        $url = (string) config('mini_api.sms_endpoint', '') . '?' . http_build_query([
            'u' => (string) config('mini_api.sms_user', ''),
            'p' => (string) config('mini_api.sms_password', ''),
            'm' => $phone,
            'c' => $content,
        ]);
        $ch = curl_init($url);
        curl_setopt_array($ch, [
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_CONNECTTIMEOUT => 5,
            CURLOPT_TIMEOUT => 10,
            CURLOPT_SSL_VERIFYPEER => true,
            CURLOPT_SSL_VERIFYHOST => 2,
            CURLOPT_FOLLOWLOCATION => false,
        ]);
        $raw = curl_exec($ch);
        $status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        $error = curl_error($ch);
        curl_close($ch);
        if ($raw === false || $status !== 200) {
            Log::warning('mini_api.sms_transport', ['http' => $status, 'transport_error' => $error]);

            throw new ApiException(50302, '短信服务暂时不可用，请稍后再试', 503);
        }
        $code = trim((string) $raw);
        if ($code === '0') {
            return;
        }
        // Provider status only. The request URL carries the password, so it is never logged.
        Log::warning('mini_api.sms_rejected', ['status' => $code, 'reason' => self::FAILURES[$code] ?? 'unknown']);
        throw new ApiException(50302, '短信发送失败，请稍后再试', 503);
    }
}