package com.yunhai.flowcenter.notify;

import com.yunhai.platform.apistd.BizException;
import com.yunhai.platform.openapi.core.PlatformService;
import com.yunhai.platform.openapi.core.YschOpenCall;
import com.yunhai.platform.openapi.msg.YschMsgOpenApi;
import com.yunhai.platform.openapi.msg.model.SendMsgRequest;
import com.yunhai.platform.openapi.msg.model.TodoCountRequest;
import com.yunhai.platform.utils.http.IDHttp;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * UserMsg 站内信客户端（概览 §七 契约）：主路径走 SDK 类型化门面 {@link YschMsgOpenApi}
 * （服务目录 key={@code usermsg}：yh.call.targets > yh.open.services > 枚举兜底
 * base-host + /usermsg）——签名/信封/错误映射由 SDK 统一承载，本应用零专属地址配置
 * （《子应用配置优化方案》§4.2）。目录未显式配置时回落 legacy
 * {@code flow-center.usermsg.base-url}（ad-hoc，迁移期兼容）。<br><br>
 * 发送方不阻断主业务：失败只记日志（对齐 PartyLearn 容错语义），由调用方在 AFTER_COMMIT
 * 监听器里容错。{@code flow-center.usermsg.enabled=false} 时全部方法静默返回（UserMsg 未部署
 * 的部署形态；生产当前即此态，避免打 localhost 的空转告警）。
 */
@Slf4j
@Service
public class UserMsgClient {

    /** 服务目录命名目标（UserMsg 已入 PlatformService 枚举：key=usermsg、ctx=/usermsg） */
    private static final String DIRECTORY_KEY = PlatformService.USERMSG.key();

    private final YschOpenCall openCall;
    private final IDHttp http;
    private final boolean enabled;
    private final String legacyBaseUrl;
    private final boolean directoryResolved;

    public UserMsgClient(YschOpenCall openCall,
                         IDHttp http,
                         @Value("${flow-center.usermsg.enabled:false}") boolean enabled,
                         @Value("${flow-center.usermsg.base-url:}") String baseUrl) {
        this.openCall = openCall;
        this.http = http;
        this.enabled = enabled;
        this.legacyBaseUrl = baseUrl == null ? "" : trimTrailing(baseUrl.trim());
        this.directoryResolved = openCall != null && openCall.hasTarget(DIRECTORY_KEY);
        if (directoryResolved) {
            YschMsgOpenApi.setCall(openCall);
        }
        if (enabled && !directoryResolved && legacyBaseUrl.isEmpty()) {
            // enabled=true 表示确实要发；目录与 legacy 键都缺 → 构造期 fail-fast
            throw new IllegalStateException("UserMsg 调用地址未配置：请配置服务目录 yh.open.services."
                    + DIRECTORY_KEY + "（推荐，容器直连完整 URL）或回落键 flow-center.usermsg.base-url");
        }
    }

    public boolean enabled() {
        return enabled;
    }

    /** 是否走服务目录命名目标（配置自检用） */
    public boolean directoryResolved() {
        return directoryResolved;
    }

    /**
     * 发送站内信（content 必填；msgNo 幂等，重发安全）。
     *
     * @param jumpApp 跳转页面归属应用（可空，值域=app_code 如 notice/svc-hall）：页面属业务方
     *                （bizUrl 落地页）时填 apply 调用方 app_code（=instance.applyAppCode，apply
     *                时由验签身份按 by-key 换得），接收方优先按它查基址；页面属流程中心自己
     *                （/task、/instance）传 null，由接收方按发送方 appKey 回落
     */
    public void sendUserMsg(Integer schId, List<Integer> userIds, Integer msgType, String bizType,
                            String bizId, String title, String content, String jumpPath, String jumpApp,
                            String msgNo, Integer expireDays) {
        if (!enabled || userIds == null || userIds.isEmpty()) {
            return;
        }
        SendMsgRequest body = new SendMsgRequest();
        body.setUserIds(userIds);
        body.setMsgType(msgType);
        body.setBizType(bizType);
        body.setBizId(bizId);
        body.setTitle(title);
        body.setContent(content);
        if (jumpPath != null) {
            body.setJumpType(1);
            body.setJumpPath(jumpPath);
        }
        body.setJumpApp(jumpApp);
        body.setMsgNo(msgNo);
        body.setSchId(schId);
        body.setExpireDays(expireDays);
        try {
            if (directoryResolved) {
                YschMsgOpenApi.sendUserMsg(body);
            } else {
                http.post(legacyBaseUrl + "/oapi/msg/sendUserMsg", body, Object.class);
            }
        } catch (BizException e) {
            log.warn("[flow-center] UserMsg 发送被拒：msgNo={} msg={}", msgNo, e.getMessage());
        } catch (Exception e) {
            log.warn("[flow-center] UserMsg 发送失败（不阻断主业务）：msgNo={} {}", msgNo, e.toString());
        }
    }

    /** 待办角标增量（+1 到达 / -1 办结） */
    public void todoInc(Integer schId, List<Integer> userIds, int count) {
        if (!enabled || userIds == null || userIds.isEmpty()) {
            return;
        }
        TodoCountRequest body = new TodoCountRequest();
        body.setUserIds(userIds);
        body.setCount(count);
        body.setSchId(schId);
        try {
            if (directoryResolved) {
                YschMsgOpenApi.todoInc(body);
            } else {
                http.post(legacyBaseUrl + "/oapi/msg/todo/inc", body, Object.class);
            }
        } catch (Exception e) {
            log.warn("[flow-center] UserMsg 角标增量失败（不阻断主业务）：userIds={} count={} {}",
                    userIds, count, e.toString());
        }
    }

    private static String trimTrailing(String url) {
        return url.endsWith("/") ? url.substring(0, url.length() - 1) : url;
    }
}