package com.nq.utils.sms;

import com.nq.utils.PropertiesUtil;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;

public final class SmsBaoClient {

    private static final Logger log = LoggerFactory.getLogger(SmsBaoClient.class);

    private static final String API_URL = "https://api.smsbao.com/sms";

    private SmsBaoClient() {
    }

    /**
     * @return true 发送成功（返回码 0）
     */
    public static boolean send(String phone, String content) {
        String username = PropertiesUtil.getProperty("smsbao.username");
        String apiKey = PropertiesUtil.getProperty("smsbao.apikey");
        if (StringUtils.isBlank(username) || StringUtils.isBlank(apiKey)) {
            log.error("短信宝配置缺失 smsbao.username / smsbao.apikey");
            return false;
        }
        try {
            String encodedContent = URLEncoder.encode(content, StandardCharsets.UTF_8.name());
            String httpArg = "u=" + username
                    + "&p=" + apiKey
                    + "&m=" + phone
                    + "&c=" + encodedContent;
            String result = request(API_URL, httpArg);
            if ("0".equals(StringUtils.trimToEmpty(result))) {
                return true;
            }
            log.error("短信宝发送失败 phone={} result={} msg={}", phone, result, mapError(result));
            return false;
        } catch (Exception e) {
            log.error("短信宝发送异常 phone=" + phone, e);
            return false;
        }
    }

    private static String request(String httpUrl, String httpArg) throws Exception {
        String fullUrl = httpUrl + "?" + httpArg;
        URL url = new URL(fullUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");
        connection.setConnectTimeout(10000);
        connection.setReadTimeout(10000);
        connection.connect();
        try (InputStream is = connection.getInputStream();
             BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8))) {
            StringBuilder sbf = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                sbf.append(line);
            }
            return sbf.toString();
        }
    }

    private static String mapError(String code) {
        if (code == null) {
            return "未知错误";
        }
        switch (code.trim()) {
            case "30":
                return "错误密码";
            case "40":
                return "账号不存在";
            case "41":
                return "余额不足";
            case "43":
                return "IP地址限制";
            case "50":
                return "内容含有敏感词";
            case "51":
                return "手机号码不正确";
            default:
                return "错误码:" + code;
        }
    }
}