package com.imutil.controller;

import cn.dev33.satoken.stp.StpUtil;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.imutil.entity.AdminUser;
import com.imutil.entity.CrossTenantGrant;
import com.imutil.entity.DistQueue;
import com.imutil.entity.Tenant;
import com.imutil.entity.UsageStat;
import com.imutil.entity.SourceApp;
import com.imutil.mapper.CrossTenantGrantMapper;
import com.imutil.mapper.DistQueueMapper;
import com.imutil.mapper.TenantMapper;
import com.imutil.mapper.UsageStatMapper;
import com.imutil.service.AdminUserService;
import com.imutil.service.SourceAppService;
import com.imutil.tencent.TencentImClient;
import com.imutil.entity.ImMessage;
import com.imutil.entity.MigrateTask;
import com.imutil.service.MigrateService;
import com.imutil.mapper.ImMessageMapper;
import org.noear.solon.core.handle.UploadedFile;
import java.nio.charset.StandardCharsets;
import java.time.format.DateTimeFormatter;
import java.time.LocalDate;
import java.time.OffsetDateTime;
import java.time.ZoneOffset;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import lombok.extern.slf4j.Slf4j;
import org.noear.solon.annotation.Controller;
import org.noear.solon.annotation.Get;
import org.noear.solon.annotation.Inject;
import org.noear.solon.annotation.Mapping;
import org.noear.solon.annotation.Param;
import org.noear.solon.annotation.Post;
import org.noear.solon.core.handle.Context;
import org.noear.solon.core.handle.ModelAndView;

/**
 * 管理后台控制器
 * <p>
 * 路由前缀 /admin。鉴权由 {@link com.imutil.filter.AdminAuthFilter} 拦截（除 login/logout）。
 * 页面用 FreeMarker 渲染（对齐 yxtech），数据 CRUD 直连对应 Mapper。
 *
 * @author imutil
 */
@Mapping("/admin")
@Controller
@Slf4j
public class AdminController {

    @Inject("${server.contextPath:}")
    private String basePath;

    @Inject
    private AdminUserService adminUserService;

    @Inject
    private TenantMapper tenantMapper;

    @Inject
    private CrossTenantGrantMapper grantMapper;

    @Inject
    private DistQueueMapper distQueueMapper;

    @Inject
    private ImMessageMapper imMessageMapper;

    @Inject
    private UsageStatMapper usageStatMapper;

    @Inject
    private SourceAppService sourceAppService;

    @Inject
    private TencentImClient tencentImClient;

    @Inject
    private MigrateService migrateService;

    // ==================== 登录 / 登出 ====================

    @Get
    @Mapping("")
    public void index(Context ctx) throws Throwable {
        ctx.redirect(basePath + "/admin/home");
    }

    @Get
    @Mapping("/login")
    public Object loginPage(@Param(defaultValue = "") String error) {
        if (StpUtil.isLogin()) {
            // 已登录不再渲染登录页（重定向由调用方处理，此处仍渲染避免死循环）
        }
        ModelAndView mv = new ModelAndView("login.ftl");
        mv.put("basePath", basePath);
        if ("1".equals(error)) {
            mv.put("errorMsg", "用户名或密码错误");
        }
        return mv;
    }

    @Post
    @Mapping("/login")
    public void doLogin(@Param(defaultValue = "") String username,
                        @Param(defaultValue = "") String password,
                        Context ctx) throws Throwable {
        AdminUser u = adminUserService.login(username, password);
        if (u != null) {
            StpUtil.login(u.getId());
            log.info("管理后台登录成功 id={} username={}", u.getId(), username);
            ctx.redirect(basePath + "/admin/home");
        } else {
            log.warn("管理后台登录失败 username={}", username);
            ctx.redirect(basePath + "/admin/login?error=1");
        }
    }

    @Get
    @Mapping("/logout")
    public void logout(Context ctx) throws Throwable {
        StpUtil.logout();
        ctx.redirect(basePath + "/admin/login");
    }

    // ==================== 修改密码 ====================

    @Get
    @Mapping("/password")
    public Object passwordPage(@Param(defaultValue = "") String msg) {
        ModelAndView mv = view("password.ftl", "修改密码", "password");
        mv.put("msg", msg);
        return mv;
    }

    @Post
    @Mapping("/password")
    public void changePassword(@Param(defaultValue = "") String oldPassword,
                               @Param(defaultValue = "") String newPassword,
                               @Param(defaultValue = "") String confirmPassword,
                               Context ctx) throws Throwable {
        // 两次新密码一致性前端已校验，后端兜底
        if (!newPassword.equals(confirmPassword)) {
            ctx.redirect(basePath + "/admin/password?msg=pwdconfirm");
            return;
        }
        try {
            // 当前登录用户ID（Sa-Token 登录时存的是 AdminUser.id）
            adminUserService.changePassword(StpUtil.getLoginIdAsLong(), oldPassword, newPassword);
            log.info("管理员密码已修改 loginId={}", StpUtil.getLoginIdAsLong());
            ctx.redirect(basePath + "/admin/password?msg=pwddone");
        } catch (Exception e) {
            // 原密码错误 / 新密码不合规统一提示，细节见日志
            log.warn("修改密码失败 : {}", e.getMessage());
            ctx.redirect(basePath + "/admin/password?msg=pwdfail");
        }
    }

    // ==================== 首页（仪表盘） ====================

    @Get
    @Mapping("/home")
    public Object home() {
        ModelAndView mv = view("home.ftl", "仪表盘", "home");
        mv.put("tenantCount", tenantMapper.selectCount(null));
        mv.put("queuePending", distQueueMapper.selectCount(Wrappers.<DistQueue>lambdaQuery()
                .eq(DistQueue::getStatus, 0)));
        mv.put("queueDead", distQueueMapper.selectCount(Wrappers.<DistQueue>lambdaQuery()
                .eq(DistQueue::getStatus, 3)));
        mv.put("grantActive", grantMapper.selectCount(Wrappers.<CrossTenantGrant>lambdaQuery()
                .eq(CrossTenantGrant::getStatus, 1)));
        return mv;
    }

    // ==================== 租户管理 ====================

    @Get
    @Mapping("/tenant")
    public Object tenantPage(@Param(defaultValue = "") String msg) {
        ModelAndView mv = view("tenant.ftl", "租户管理", "tenant");
        mv.put("tenants", tenantMapper.selectList(null));
        mv.put("msg", msg);
        return mv;
    }

    @Post
    @Mapping("/tenant/save")
    public void tenantSave(Tenant t, Context ctx) throws Throwable {
        if (t.getTenantId() == null || t.getTenantId().isEmpty()) {
            ctx.redirect(basePath + "/admin/tenant?msg=tenant_id_required");
            return;
        }
        if (t.getPrefixCode() == null || t.getPrefixCode().isEmpty()) {
            t.setPrefixCode(t.getTenantId());
        }
        if (t.getStatus() == null) {
            t.setStatus(1);
        }
        if (tenantMapper.selectById(t.getTenantId()) == null) {
            tenantMapper.insert(t);
        } else {
            tenantMapper.updateById(t);
        }
        ctx.redirect(basePath + "/admin/tenant?msg=saved");
    }

    @Post
    @Mapping("/tenant/toggle")
    public void tenantToggle(@Param String tenantId, @Param Integer status, Context ctx) throws Throwable {
        Tenant t = new Tenant();
        t.setTenantId(tenantId);
        t.setStatus(status == null ? 0 : status);
        tenantMapper.updateById(t);
        ctx.redirect(basePath + "/admin/tenant?msg=toggled");
    }

    // ==================== 跨租户授权 ====================

    @Get
    @Mapping("/grant")
    public Object grantPage(@Param(defaultValue = "") String msg) {
        ModelAndView mv = view("grant.ftl", "跨租户授权", "grant");
        mv.put("grants", grantMapper.selectList(null));
        mv.put("tenants", tenantMapper.selectList(null));
        mv.put("msg", msg);
        return mv;
    }

    @Post
    @Mapping("/grant/save")
    public void grantSave(CrossTenantGrant g, Context ctx) throws Throwable {
        if (g.getStatus() == null) {
            g.setStatus(1);
        }
        if (g.getDirection() == null) {
            g.setDirection(0);
        }
        if (g.getGrantId() == null) {
            grantMapper.insert(g);
        } else {
            grantMapper.updateById(g);
        }
        ctx.redirect(basePath + "/admin/grant?msg=saved");
    }

    @Post
    @Mapping("/grant/revoke")
    public void grantRevoke(@Param Long grantId, Context ctx) throws Throwable {
        CrossTenantGrant g = new CrossTenantGrant();
        g.setGrantId(grantId);
        g.setStatus(0);
        grantMapper.updateById(g);
        ctx.redirect(basePath + "/admin/grant?msg=revoked");
    }

    // ==================== 队列监控 / 死信重发 ====================

    @Get
    @Mapping("/queue")
    public Object queuePage(@Param(defaultValue = "") String msg) {
        ModelAndView mv = view("queue.ftl", "队列监控", "queue");
        mv.put("pendings", distQueueMapper.selectList(Wrappers.<DistQueue>lambdaQuery()
                .eq(DistQueue::getStatus, 0)
                .orderByAsc(DistQueue::getId)
                .last("LIMIT 50")));
        mv.put("deads", distQueueMapper.selectList(Wrappers.<DistQueue>lambdaQuery()
                .eq(DistQueue::getStatus, 3)
                .orderByDesc(DistQueue::getId)
                .last("LIMIT 50")));
        mv.put("deadCount", distQueueMapper.selectCount(Wrappers.<DistQueue>lambdaQuery()
                .eq(DistQueue::getStatus, 3)));
        mv.put("msg", msg);
        return mv;
    }

    @Post
    @Mapping("/queue/redeliver")
    public void redeliver(@Param Long id, Context ctx) throws Throwable {
        int n = distQueueMapper.redeliverDead(id);
        ctx.redirect(basePath + "/admin/queue?msg=" + (n > 0 ? "redelivered" : "not_dead"));
    }

    // ==================== 用量报表 ====================

    @Get
    @Mapping("/usage")
    public Object usagePage() {
        ModelAndView mv = view("usage.ftl", "用量报表", "usage");
        mv.put("stats", usageStatMapper.selectList(Wrappers.<UsageStat>lambdaQuery()
                .orderByDesc(UsageStat::getStatTime)
                .last("LIMIT 100")));
        return mv;
    }

    // ==================== 老应用配置（数据迁移源） ====================

    @Get
    @Mapping("/sourceapp")
    public Object sourceAppPage(@Param(defaultValue = "") String msg) {
        ModelAndView mv = view("sourceapp.ftl", "老应用配置", "sourceapp");
        mv.put("apps", sourceAppService.list());
        mv.put("tenants", tenantMapper.selectList(null));
        mv.put("msg", msg);
        return mv;
    }

    @Post
    @Mapping("/sourceapp/save")
    public void sourceAppSave(SourceApp app, Context ctx) throws Throwable {
        if (app.getSdkAppId() == null || app.getSdkAppId().isEmpty()) {
            ctx.redirect(basePath + "/admin/sourceapp?msg=sdkappid_required");
            return;
        }
        if (app.getTenantId() == null || app.getTenantId().isEmpty()) {
            ctx.redirect(basePath + "/admin/sourceapp?msg=tenant_required");
            return;
        }
        sourceAppService.save(app);
        ctx.redirect(basePath + "/admin/sourceapp?msg=saved");
    }

    @Post
    @Mapping("/sourceapp/toggle")
    public void sourceAppToggle(@Param Long id, @Param Integer status, Context ctx) throws Throwable {
        sourceAppService.toggle(id, status);
        ctx.redirect(basePath + "/admin/sourceapp?msg=toggled");
    }

    /**
     * 测试老应用连通性：用老应用密钥调 account_import（幂等，导入 administrator，无实质副作用），
     * 验证 SDKAppId/密钥/sig 正确。腾讯返回业务级响应（非 70003）即说明 sig 鉴权通过、连通成功。
     */
    @Post
    @Mapping("/sourceapp/test")
    public void sourceAppTest(@Param Long id, Context ctx) throws Throwable {
        SourceApp app = sourceAppService.getById(id);
        if (app == null) {
            ctx.redirect(basePath + "/admin/sourceapp?msg=notfound");
            return;
        }
        // account_import：幂等导入 administrator（主应用/老应用本就需要该管理员账号），必返 ActionStatus=OK
        String body = "{\"Identifier\":\"administrator\"}";
        String resp = tencentImClient.callApiAs("im_open_login_svc/account_import", body,
                Long.parseLong(app.getSdkAppId()), app.getSecretKey());
        // 连通判定：网络异常（ErrorCode=-1，doCallApi 兜底）→失败；70003=UserSig 错误（密钥不匹配）；
        // 其余任何腾讯业务级响应都说明请求已达腾讯且 sig 鉴权通过 → 连通成功
        String msg;
        if (resp.contains("\"ErrorCode\":-1")) {
            msg = "test_fail";
        } else if (resp.contains("70003")) {
            msg = "test_sigfail";
        } else {
            msg = "test_ok";
        }
        log.info("老应用连通测试 id={} sdk={} resp={}", id, app.getSdkAppId(), resp);
        ctx.redirect(basePath + "/admin/sourceapp?msg=" + msg);
    }

    // ==================== 数据迁移（T14） ====================

    @Get
    @Mapping("/migrate")
    public Object migratePage(@Param(defaultValue = "") String msg,
                              @Param(defaultValue = "") String imported,
                              @Param(defaultValue = "") String migrated) {
        ModelAndView mv = view("migrate.ftl", "数据迁移", "migrate");
        mv.put("tasks", migrateService.listTasks());
        mv.put("apps", sourceAppService.list());
        mv.put("msg", msg);
        mv.put("imported", imported);
        mv.put("migrated", migrated);
        return mv;
    }

    /**
     * 用户迁移：上传用户清单文件（每行一个老 UserID）或粘贴列表 → 加前缀 → 批量导入主应用 → 写映射 → 校验
     */
    @Post
    @Mapping("/migrate/users")
    public void migrateUsers(@Param Long sourceAppId,
                             @Param(defaultValue = "") String userText,
                             Context ctx) throws Throwable {
        List<String> userIds = new ArrayList<>();
        UploadedFile file = ctx.file("file");
        if (file != null) {
            parseUserIds(new String(file.getContentAsBytes(), StandardCharsets.UTF_8), userIds);
        } else if (!userText.isEmpty()) {
            parseUserIds(userText, userIds);
        }
        if (sourceAppId == null) {
            ctx.redirect(basePath + "/admin/migrate?msg=noapp");
            return;
        }
        if (userIds.isEmpty()) {
            ctx.redirect(basePath + "/admin/migrate?msg=empty");
            return;
        }
        MigrateTask task = migrateService.migrateUsers(sourceAppId, userIds);
        ctx.redirect(basePath + "/admin/migrate?msg=done&imported=" + task.getProcessedCount());
    }

    /**
     * 群迁移：选老应用 → getAppidGroups 拉群 → 逐群拉成员 → 加前缀建群 → 导入成员 → 写 group_mapping
     */
    @Post
    @Mapping("/migrate/groups")
    public void migrateGroups(@Param Long sourceAppId, Context ctx) throws Throwable {
        if (sourceAppId == null) {
            ctx.redirect(basePath + "/admin/migrate?msg=noapp");
            return;
        }
        MigrateTask task = migrateService.migrateGroups(sourceAppId);
        ctx.redirect(basePath + "/admin/migrate?msg=gdone&migrated=" + task.getProcessedCount());
    }

    /**
     * 群消息迁移：上传/粘贴群 ID 清单 → 逐群拉历史消息 → 加前缀 → importGroupMsg
     */
    @Post
    @Mapping("/migrate/groupmsg")
    public void migrateGroupMsg(@Param Long sourceAppId,
                                @Param(defaultValue = "") String userText,
                                Context ctx) throws Throwable {
        UploadedFile file = ctx.file("file");
        List<String> groupIds = new ArrayList<>();
        if (file != null) {
            parseUserIds(new String(file.getContentAsBytes(), StandardCharsets.UTF_8), groupIds);
        } else if (!userText.isEmpty()) {
            parseUserIds(userText, groupIds);
        }
        if (sourceAppId == null) {
            ctx.redirect(basePath + "/admin/migrate?msg=noapp");
            return;
        }
        if (groupIds.isEmpty()) {
            ctx.redirect(basePath + "/admin/migrate?msg=empty");
            return;
        }
        MigrateTask task = migrateService.migrateGroupMessages(sourceAppId, groupIds);
        ctx.redirect(basePath + "/admin/migrate?msg=gmdone&imported=" + task.getProcessedCount());
    }

    /**
     * 单聊消息迁移：上传会话清单（每行 from,to）或粘贴 → getRoamMsg 拉 → 加前缀 → importMsg
     */
    @Post
    @Mapping("/migrate/messages")
    public void migrateMessages(@Param Long sourceAppId,
                                @Param(defaultValue = "") String convText,
                                Context ctx) throws Throwable {
        UploadedFile file = ctx.file("file");
        String content = file != null ? new String(file.getContentAsBytes(), StandardCharsets.UTF_8) : convText;
        List<String[]> pairs = new ArrayList<>();
        parseConvPairs(content, pairs);
        if (sourceAppId == null) {
            ctx.redirect(basePath + "/admin/migrate?msg=noapp");
            return;
        }
        if (pairs.isEmpty()) {
            ctx.redirect(basePath + "/admin/migrate?msg=empty");
            return;
        }
        MigrateTask task = migrateService.migrateMessages(sourceAppId, pairs);
        ctx.redirect(basePath + "/admin/migrate?msg=mdone&imported=" + task.getProcessedCount());
    }

    /**
     * 关系链迁移：上传用户清单（每行一个 UserID）或粘贴 → 逐用户拉好友 → 加前缀 → importFriend
     */
    @Post
    @Mapping("/migrate/roster")
    public void migrateRoster(@Param Long sourceAppId,
                              @Param(defaultValue = "") String userText,
                              Context ctx) throws Throwable {
        UploadedFile file = ctx.file("file");
        List<String> userIds = new ArrayList<>();
        if (file != null) {
            parseUserIds(new String(file.getContentAsBytes(), StandardCharsets.UTF_8), userIds);
        } else if (!userText.isEmpty()) {
            parseUserIds(userText, userIds);
        }
        if (sourceAppId == null) {
            ctx.redirect(basePath + "/admin/migrate?msg=noapp");
            return;
        }
        if (userIds.isEmpty()) {
            ctx.redirect(basePath + "/admin/migrate?msg=empty");
            return;
        }
        MigrateTask task = migrateService.migrateRoster(sourceAppId, userIds);
        ctx.redirect(basePath + "/admin/migrate?msg=rdone&imported=" + task.getProcessedCount());
    }

    /** 解析用户清单：每行一个 UserID，空行与 # 注释跳过 */
    private void parseUserIds(String content, List<String> out) {
        for (String line : content.split("\\r?\\n")) {
            line = line.trim();
            if (!line.isEmpty() && !line.startsWith("#")) {
                out.add(line);
            }
        }
    }

    /** 解析会话清单：每行 from,to（逗号或空格分隔），空行与 # 注释跳过 */
    private void parseConvPairs(String content, List<String[]> out) {
        if (content == null || content.isEmpty()) {
            return;
        }
        for (String line : content.split("\\r?\\n")) {
            line = line.trim();
            if (line.isEmpty() || line.startsWith("#")) {
                continue;
            }
            String[] parts = line.split("[,，\\s]+");
            if (parts.length >= 2) {
                out.add(new String[]{parts[0], parts[1]});
            }
        }
    }

    // ==================== 公共：构造页面模型 ====================

    /**
     * 构造带侧边栏布局的 ModelAndView
     *
     * @param tpl   模板名（如 home.ftl）
     * @param title 页面标题
     * @param active 侧边栏高亮项（home/tenant/grant/queue/usage）
     */
    // ==================== 消息记录 ====================

    /**
     * 消息记录列表（已分发消息查询）
     * <p>
     * 默认最近 7 天 + 已分发（dist_status=1）；带 msg_time 范围走分区裁剪。
     */
    @Get
    @Mapping("/messages")
    public Object messagesPage(@Param(defaultValue = "") String tenantId,
                               @Param(required = false) Integer convType,
                               @Param(defaultValue = "1") Integer distStatus,
                               @Param(defaultValue = "") String dateFrom,
                               @Param(defaultValue = "") String dateTo,
                               @Param(defaultValue = "") String keyword,
                               @Param(defaultValue = "1") int page,
                               @Param(defaultValue = "20") int size) {
        // 默认时间窗：最近 7 天（带 msg_time 范围触发分区裁剪，避免全分区扫描）
        OffsetDateTime now = OffsetDateTime.now();
        OffsetDateTime from = parseDateStart(dateFrom, now.minusDays(7));
        OffsetDateTime to = parseDateEnd(dateTo, now);
        int safePage = Math.max(1, page);
        int safeSize = size <= 0 ? 20 : Math.min(size, 200);
        int offset = (safePage - 1) * safeSize;

        String tid = (tenantId == null || tenantId.isEmpty()) ? null : tenantId;
        String kw = (keyword == null || keyword.isEmpty()) ? null : keyword;
        List<ImMessage> rawRows = imMessageMapper.selectMessagePage(tid, convType, distStatus, from, to, kw, offset, safeSize);
        long total = imMessageMapper.countMessages(tid, convType, distStatus, from, to, kw);
        int totalPages = (int) ((total + safeSize - 1) / Math.max(1, safeSize));

        // 转成 Map 并预格式化时间（FreeMarker 对 java.time OffsetDateTime 格式化支持不稳，Controller 端处理）
        DateTimeFormatter fmtDisp = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        DateTimeFormatter fmtIso = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSSSSSSSxxx");
        List<Map<String, Object>> rows = new ArrayList<>();
        if (rawRows != null) {
            for (ImMessage r : rawRows) {
                Map<String, Object> v = new LinkedHashMap<>();
                v.put("msgKey", r.getMsgKey());
                v.put("msgKeyEnc", r.getMsgKey() == null ? "" : java.net.URLEncoder.encode(r.getMsgKey(), StandardCharsets.UTF_8));
                v.put("msgTimeStr", r.getMsgTime() == null ? "" : r.getMsgTime().format(fmtDisp));
                v.put("msgTimeIso", r.getMsgTime() == null ? "" : java.net.URLEncoder.encode(r.getMsgTime().format(fmtIso), StandardCharsets.UTF_8));
                v.put("tenantId", r.getTenantId());
                v.put("convType", r.getConvType());
                v.put("convId", r.getConvId());
                v.put("fromAccount", r.getFromAccount());
                v.put("toAccount", r.getToAccount());
                v.put("groupId", r.getGroupId());
                v.put("msgType", r.getMsgType());
                v.put("source", r.getSource());
                v.put("isCrossTenant", r.getIsCrossTenant());
                v.put("distStatus", r.getDistStatus());
                rows.add(v);
            }
        }

        ModelAndView mv = view("messages.ftl", "消息记录", "messages");
        mv.put("rows", rows);
        mv.put("total", total);
        mv.put("page", safePage);
        mv.put("size", safeSize);
        mv.put("totalPages", totalPages);
        mv.put("tenantId", tenantId == null ? "" : tenantId);
        mv.put("convType", convType);
        mv.put("distStatus", distStatus);
        mv.put("dateFrom", dateFrom == null ? "" : dateFrom);
        mv.put("dateTo", dateTo == null ? "" : dateTo);
        mv.put("keyword", keyword == null ? "" : keyword);
        mv.put("tenants", tenantMapper.selectList(null));
        return mv;
    }

    /**
     * 消息详情：完整字段 + msg_body + 关联 dist_queue 分发链路
     */
    @Get
    @Mapping("/messages/detail")
    public Object messageDetail(@Param String msgKey, @Param String msgTime) {
        ModelAndView mv = view("messages_detail.ftl", "消息详情", "messages");
        if (msgKey == null || msgKey.isEmpty() || msgTime == null || msgTime.isEmpty()) {
            mv.put("msg", null);
            mv.put("dists", java.util.Collections.emptyList());
            return mv;
        }
        OffsetDateTime t;
        try {
            t = OffsetDateTime.parse(msgTime);
        } catch (Exception e) {
            mv.put("msg", null);
            mv.put("dists", java.util.Collections.emptyList());
            return mv;
        }
        ImMessage m = imMessageMapper.selectOne(Wrappers.<ImMessage>lambdaQuery()
                .eq(ImMessage::getMsgKey, msgKey).eq(ImMessage::getMsgTime, t));
        mv.put("msg", m);
        mv.put("msgTimeStr", (m != null && m.getMsgTime() != null)
                ? m.getMsgTime().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSS")) : "");
        mv.put("msgCreatedStr", (m != null && m.getCreatedAt() != null)
                ? m.getCreatedAt().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")) : "");
        // dist_queue 分发链路，时间预格式化（同列表原因）
        DateTimeFormatter fmtDisp = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        List<DistQueue> rawDists = distQueueMapper.selectByMsgKey(msgKey);
        List<Map<String, Object>> dists = new ArrayList<>();
        if (rawDists != null) {
            for (DistQueue d : rawDists) {
                Map<String, Object> v = new LinkedHashMap<>();
                v.put("id", d.getId());
                v.put("targetUrl", d.getTargetUrl());
                v.put("tenantId", d.getTenantId());
                v.put("status", d.getStatus());
                v.put("retryCount", d.getRetryCount());
                v.put("createdStr", d.getCreatedAt() == null ? "" : d.getCreatedAt().format(fmtDisp));
                v.put("updatedStr", d.getUpdatedAt() == null ? "" : d.getUpdatedAt().format(fmtDisp));
                dists.add(v);
            }
        }
        mv.put("dists", dists);
        return mv;
    }

    /** 解析 yyyy-MM-dd 为当天 0 点（+8），空或非法用默认值 */
    private OffsetDateTime parseDateStart(String s, OffsetDateTime def) {
        if (s == null || s.isEmpty()) {
            return def;
        }
        try {
            return LocalDate.parse(s).atStartOfDay(ZoneOffset.ofHours(8)).toOffsetDateTime();
        } catch (Exception e) {
            return def;
        }
    }

    /** 解析 yyyy-MM-dd 为次日 0 点（+8，开区间覆盖整天），空或非法用默认值 */
    private OffsetDateTime parseDateEnd(String s, OffsetDateTime def) {
        if (s == null || s.isEmpty()) {
            return def;
        }
        try {
            return LocalDate.parse(s).plusDays(1).atStartOfDay(ZoneOffset.ofHours(8)).toOffsetDateTime();
        } catch (Exception e) {
            return def;
        }
    }

    private ModelAndView view(String tpl, String title, String active) {
        ModelAndView mv = new ModelAndView(tpl);
        mv.put("basePath", basePath);
        mv.put("pageTitle", title);
        mv.put("active", active);
        return mv;
    }
}