package com.xcong.excoin.utils.dingtalk;

import com.dingtalk.api.DefaultDingTalkClient;
import com.dingtalk.api.DingTalkClient;
import com.dingtalk.api.request.OapiRobotSendRequest;
import com.dingtalk.api.response.OapiRobotSendResponse;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.codec.binary.Base64;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;

/**
 * 钉钉群机器人消息发送工具。
 *
 * <h3>快速使用</h3>
 * <pre>
 * // 1. 创建发送器
 * DingTalkRobot robot = new DingTalkRobot(accessToken, secret);
 *
 * // 2a. 发送文本
 * robot.sendText("充值到账：1000 USDT");
 *
 * // 2b. 发送 Markdown（title 会作为 @所有人 通知标题）
 * robot.sendMarkdown("策略通知", "## 盈亏汇总\n- 已实现: **+2.5 USDT**");
 *
 * // 2c. 发送 ActionCard
 * robot.sendActionCard("止盈通知", "策略已达止盈目标", "查看详情", "https://xxx.com");
 * </pre>
 *
 * @author wzy
 */
@Slf4j
public class DingTalkUtils {

    private static final String ROBOT_URL = "https://oapi.dingtalk.com/robot/send?access_token=";

    private final String accessToken;
    private final String secret;

    // ==================== 默认实例（向后兼容旧代码） ====================

    private static volatile DingTalkUtils DEFAULT;

    public static DingTalkUtils getDefault() {
        if (DEFAULT == null) {
            synchronized (DingTalkUtils.class) {
                if (DEFAULT == null) {
//                    DEFAULT = new DingTalkUtils(
//                            "57a3e695f78d7547fe20fb7aef82cf35a27de1846bbc6966e0194761976d7597",
//                            "SECd59a93c8939eeaef0d97b5b714639df4af95d922002d0a440bc82ad42710a89e");
                    DEFAULT = new DingTalkUtils(
                            "e357a3417991da86a5f79ea5bc8785b529c1da8b9d27458febed3b3d10c857c4",
                            "SECf2b819e930cb4b367cf599f11a30eb8a5d0f4b0b1c069a57aa15328a3feebf8c");
                }
            }
        }
        return DEFAULT;
    }

    /**
     * 向后兼容：按类型代码发送 ActionCard 通知。
     *
     * @param typeIndex {@link DingTalkType} 的 index
     */
    public static void sendActionCard(int typeIndex) {
        DingTalkType dt = DingTalkType.byIndex(typeIndex);
        if (dt == null) {
            log.warn("[DingTalk] 未知通知类型: {}", typeIndex);
            return;
        }
        getDefault().sendActionCard(dt.getName(), dt.getName(), "查看详情", "http://baidu.com");
    }

    // ==================== 构造 ====================

    /**
     * @param accessToken 钉钉机器人 Webhook 地址中的 access_token
     * @param secret      钉钉机器人安全设置中的加签密钥
     */
    public DingTalkUtils(String accessToken, String secret) {
        this.accessToken = accessToken;
        this.secret = secret;
    }

    // ==================== 文本消息 ====================

    /**
     * 发送纯文本消息。
     *
     * @param content 文本内容，最大 4096 字节，支持 @手机号 提醒
     */
    public void sendText(String content) {
        OapiRobotSendRequest req = new OapiRobotSendRequest();
        req.setMsgtype("text");
        OapiRobotSendRequest.Text text = new OapiRobotSendRequest.Text();
        text.setContent(content);
        req.setText(text);
        execute(req);
    }

    // ==================== Markdown 消息 ====================

    /**
     * 发送 Markdown 消息。
     *
     * @param title 消息标题，显示在会话列表和推送通知中
     * @param markdown Markdown 正文，支持标题/加粗/链接/列表等语法
     */
    public void sendMarkdown(String title, String markdown) {
        OapiRobotSendRequest req = new OapiRobotSendRequest();
        req.setMsgtype("markdown");
        OapiRobotSendRequest.Markdown md = new OapiRobotSendRequest.Markdown();
        md.setTitle(title);
        md.setText(markdown);
        req.setMarkdown(md);
        execute(req);
    }

    // ==================== ActionCard 消息 ====================

    /**
     * 发送单按钮 ActionCard 消息。
     *
     * @param title   卡片标题
     * @param text   卡片正文（支持 Markdown，减号开头的行会被转为列表）
     * @param btnTitle 按钮文字
     * @param btnUrl   按钮跳转链接
     */
    public void sendActionCard(String title, String text, String btnTitle, String btnUrl) {
        OapiRobotSendRequest req = new OapiRobotSendRequest();
        req.setMsgtype("actionCard");
        OapiRobotSendRequest.Actioncard card = new OapiRobotSendRequest.Actioncard();
        card.setTitle(title);
        card.setText(text);
        card.setBtnOrientation("1");
        List<OapiRobotSendRequest.Btns> btns = new ArrayList<>();
        OapiRobotSendRequest.Btns btn = new OapiRobotSendRequest.Btns();
        btn.setTitle(btnTitle);
        btn.setActionURL(btnUrl);
        btns.add(btn);
        card.setBtns(btns);
        req.setActionCard(card);
        execute(req);
    }

    // ==================== 内部执行 ====================

    private void execute(OapiRobotSendRequest request) {
        try {
            Long timestamp = System.currentTimeMillis();
            String sign = generateSign(timestamp);
            String url = ROBOT_URL + accessToken + "&timestamp=" + timestamp + "&sign=" + sign;
            DingTalkClient client = new DefaultDingTalkClient(url);
            OapiRobotSendResponse response = client.execute(request);
            if (!response.isSuccess()) {
                log.warn("[DingTalk] 发送失败, errcode:{}, errmsg:{}", response.getErrcode(), response.getErrmsg());
            } else {
                log.info("[DingTalk] 发送成功");
            }
        } catch (Exception e) {
            log.error("[DingTalk] 发送异常", e);
        }
    }

    private String generateSign(Long timestamp) throws Exception {
        String stringToSign = timestamp + "\n" + secret;
        Mac mac = Mac.getInstance("HmacSHA256");
        mac.init(new SecretKeySpec(secret.getBytes("UTF-8"), "HmacSHA256"));
        byte[] signData = mac.doFinal(stringToSign.getBytes("UTF-8"));
        return URLEncoder.encode(new String(Base64.encodeBase64(signData)), "UTF-8");
    }

    public static void main(String[] args) {
        DingTalkUtils.getDefault().sendActionCard("风险提示", "测试123", "", "");
    }
}