use std::sync::atomic::Ordering;
use std::sync::Arc;
use tracing::{debug, error, warn};
use crate::ilink::types::{SendMessageRequest, WeixinMessage};
use super::*;
async fn resolve_vctx_and_vtoken(
state: &HubState,
real_ctx: &str,
from_user_id: &str,
group_id: Option<&str>,
) -> (String, Option<String>) {
let vctx =
super::dispatch::resolve_vctx_for_message(state, real_ctx, from_user_id, group_id, None)
.await;
let vtoken = state
.routing
.router
.lock()
.await
.get_route(from_user_id)
.map(str::to_string);
(vctx, vtoken)
}
pub(super) async fn handle_hub_command(state: Arc<HubState>, msg: WeixinMessage, cmd: HubCommand) {
let real_ctx = match msg.context_token.clone() {
Some(ctx) if !ctx.is_empty() => ctx,
_ => {
warn!(
?cmd,
"hub command message has no context_token, cannot reply"
);
return;
}
};
let from_user_id = msg.from_user_id.as_deref().unwrap_or_default().to_string();
debug!(?cmd, from_user_id, context_token = %real_ctx, "handling hub command");
let reply_text = match cmd {
HubCommand::List => handle_cmd_list(&state, &from_user_id).await,
HubCommand::UseClient(ref name) => handle_cmd_use(&state, &from_user_id, name).await,
HubCommand::Broadcast(ref text) => {
handle_cmd_broadcast(&state, &from_user_id, &real_ctx, &msg, text).await
}
HubCommand::Status => handle_cmd_status(&state).await,
HubCommand::Help => handle_cmd_help(),
HubCommand::SessionList => {
handle_cmd_session_list(&state, &from_user_id, &real_ctx, msg.group_id.as_deref()).await
}
HubCommand::SessionNew(ref session_name, ref initial_uuid) => {
handle_cmd_session_new(
&state,
&from_user_id,
&real_ctx,
msg.group_id.as_deref(),
session_name,
initial_uuid,
)
.await
}
HubCommand::SessionUse(ref session_name) => {
handle_cmd_session_use(
&state,
&from_user_id,
&real_ctx,
msg.group_id.as_deref(),
session_name,
)
.await
}
HubCommand::SessionDelete(ref session_name) => {
handle_cmd_session_delete(
&state,
&from_user_id,
&real_ctx,
msg.group_id.as_deref(),
session_name,
)
.await
}
};
debug!(to = %from_user_id, "sending hub command reply");
let mut send_req = SendMessageRequest::reply(real_ctx, reply_text, &from_user_id);
if let Some(m) = &mut send_req.msg {
m.ensure_outbound();
let index_hub_quote = matches!(
&cmd,
HubCommand::List
| HubCommand::Status
| HubCommand::Help
| HubCommand::UseClient(_)
| HubCommand::SessionList
| HubCommand::SessionNew(_, _)
| HubCommand::SessionUse(_)
| HubCommand::SessionDelete(_)
);
if index_hub_quote {
if let Some(text) = m.text().map(str::to_string) {
state
.routing
.quote_index
.lock()
.await
.register_outbound_content(
&from_user_id,
&text,
quote_route::QuoteOrigin::Hub { cmd: cmd.clone() },
);
}
}
}
match state.ilink.upstream.send_message(send_req).await {
Err(e) => error!(error = %e, "failed to send hub command reply"),
Ok(resp) if resp.ret.map(|r| r != 0).unwrap_or(false) => {
error!(ret = resp.ret, errmsg = ?resp.errmsg, "iLink rejected hub command reply");
}
Ok(_) => {
debug!(?cmd, "hub command reply sent successfully");
}
}
}
pub(super) async fn handle_cmd_list(state: &HubState, from_user_id: &str) -> String {
let registry = state.clients.registry.read().await;
let mut clients = registry.all_clients();
clients.sort_by(|a, b| a.name.cmp(&b.name));
if clients.is_empty() {
"尚未注册任何后端客户端。".to_string()
} else {
let active_vtoken = {
let router = state.routing.router.lock().await;
router.get_route(from_user_id).map(str::to_string)
};
let active_name = active_vtoken.as_deref().and_then(|vt| {
clients
.iter()
.find(|c| c.vtoken == vt)
.map(|c| c.name.as_str())
});
let mut lines = vec!["**已注册的后端：**".to_string()];
for (i, c) in clients.iter().enumerate() {
let status = if c.online { "🟢" } else { "🔴" };
let label = c.label.as_deref().unwrap_or(&c.name);
let selected = if active_name == Some(c.name.as_str()) {
" ✅"
} else {
""
};
lines.push(format!(
"{} {}. `{}`{} — {}",
status,
i + 1,
c.name,
selected,
label
));
}
match active_name {
Some(name) => lines.push(format!("\n当前选中：`{}`", name)),
None => lines.push("\n当前未选中（广播模式）".to_string()),
}
lines.push(
"用 `/use <名称或序号>`（或 `/u <名称或序号>`）切换后端，或发送 `@<名称或序号> <消息>` 直接发起临时会话。"
.to_string(),
);
lines.join("\n")
}
}
pub(super) async fn handle_cmd_use(state: &HubState, from_user_id: &str, name: &str) -> String {
let registry = state.clients.registry.read().await;
if let Some(client) = registry.get_by_alias(name) {
let vtoken = client.vtoken.clone();
let resolved_name = client.name.clone();
drop(registry);
if let Err(e) = state.store.set_route(from_user_id, &vtoken).await {
warn!(error = %e, "failed to persist route to DB");
format!(
"⚠️ 切换到 `{}` 失败（数据库写入错误），请重试",
resolved_name
)
} else {
let mut router = state.routing.router.lock().await;
router.set_route(from_user_id, vtoken.clone());
format!("✅ 已切换到 `{}`", resolved_name)
}
} else {
format!(
"❌ 未找到名为 `{}` 的后端。用 `/list`（或 `/ls`）查看可用后端（支持用序号，如 `/use 1`）。",
name
)
}
}
pub(super) async fn handle_cmd_broadcast(
state: &HubState,
from_user_id: &str,
real_ctx: &str,
msg: &WeixinMessage,
text: &str,
) -> String {
let online = {
let registry = state.clients.registry.read().await;
registry
.online_clients()
.iter()
.map(|c| c.vtoken.clone())
.collect::<Vec<_>>()
};
for vtoken in &online {
let vctx = super::dispatch::resolve_vctx_for_message(
state,
real_ctx,
from_user_id,
msg.group_id.as_deref(),
None,
)
.await;
let mut m = msg.clone();
let hub_ext =
super::dispatch::build_hub_ext_for_vctx(&state.store, &vctx, vtoken, None).await;
m.context_token = Some(vctx.clone());
m.ilink_hub_ext = hub_ext;
if let Some(items) = &mut m.item_list {
let items_mut = std::sync::Arc::make_mut(items);
if let Some(first) = items_mut.first_mut() {
if let Some(ti) = &mut first.text_item {
ti.text = Some(text.to_string());
}
}
}
match state.clients.queue.push(vtoken, m).await {
Ok(false) => {
state
.metrics
.messages_dispatched
.fetch_add(1, Ordering::Relaxed);
}
Ok(true) => {
state
.metrics
.messages_dropped
.fetch_add(1, Ordering::Relaxed);
}
Err(e) => {
error!(error = %e, vtoken = %crate::redact_token(vtoken), "failed to push hub broadcast message");
state
.metrics
.messages_dropped
.fetch_add(1, Ordering::Relaxed);
}
}
}
format!("📡 Broadcast to {} client(s)", online.len())
}
pub(super) async fn handle_cmd_status(state: &HubState) -> String {
let (online, total, online_clients) = {
let registry = state.clients.registry.read().await;
let all = registry.all_clients();
let online = registry.online_clients().len();
let total = all.len();
let online_clients: Vec<(String, String)> = all
.iter()
.filter(|c| c.online)
.map(|c| (c.name.clone(), c.vtoken.clone()))
.collect();
(online, total, online_clients)
};
let vtokens: Vec<String> = online_clients.iter().map(|(_, vt)| vt.clone()).collect();
let all_sessions_map = tokio::time::timeout(
std::time::Duration::from_secs(3),
state.store.get_all_session_entries_per_vtoken(&vtokens),
)
.await
.unwrap_or_else(|_| {
warn!("get_all_session_entries_per_vtoken timed out in /status");
Ok(std::collections::HashMap::new())
})
.unwrap_or_default();
let client_sessions: Vec<(String, Vec<crate::store::SessionStatusEntry>)> = online_clients
.into_iter()
.map(|(name, vtoken)| {
let sessions = all_sessions_map.get(&vtoken).cloned().unwrap_or_default();
(name, sessions)
})
.collect();
messages::hub_status(online, total, &client_sessions)
}
pub(super) fn handle_cmd_help() -> String {
build_help_text()
}
pub(super) async fn handle_cmd_session_list(
state: &HubState,
from_user_id: &str,
real_ctx: &str,
group_id: Option<&str>,
) -> String {
let (vctx, vtoken) = resolve_vctx_and_vtoken(state, real_ctx, from_user_id, group_id).await;
match vtoken {
None => messages::NO_BACKEND.to_string(),
Some(vtoken) => {
let backend_name = {
let registry = state.clients.registry.read().await;
registry
.all_clients()
.into_iter()
.find(|c| c.vtoken == vtoken)
.map(|c| c.name.clone())
.unwrap_or_else(|| crate::redact_token(&vtoken))
};
let active = state
.store
.get_active_session_name(&vctx, &vtoken)
.await
.unwrap_or_else(|_| "default".to_string());
match state.store.list_backend_sessions(&vctx, &vtoken).await {
Ok(sessions) if sessions.is_empty() => {
format!(
"当前后端 `{backend_name}` {}",
messages::SESSION_LIST_NO_SESSIONS
)
}
Ok(sessions) => {
let mut lines = vec![format!("**后端 `{backend_name}` 的 sessions：**")];
for s in &sessions {
let marker = if s.session_name == active { " ✅" } else { "" };
let uuid_hint = if s.backend_session_id.is_empty() {
messages::SESSION_SLOT_NO_UUID.to_string()
} else {
format!(
"`{}`",
s.backend_session_id.chars().take(12).collect::<String>()
)
};
lines.push(format!("• `{}`{} — {}", s.session_name, marker, uuid_hint));
}
lines.push(format!("\n当前活跃：`{}`", active));
lines.push(messages::SESSION_LIST_SWITCH_HINT.to_string());
lines.join("\n")
}
Err(e) => messages::session_list_failed(&e),
}
}
}
}
pub(super) async fn handle_cmd_session_new(
state: &HubState,
from_user_id: &str,
real_ctx: &str,
group_id: Option<&str>,
session_name: &str,
initial_uuid: &str,
) -> String {
let (vctx, vtoken) = resolve_vctx_and_vtoken(state, real_ctx, from_user_id, group_id).await;
match vtoken {
None => messages::NO_BACKEND.to_string(),
Some(vtoken) => {
match state
.store
.set_backend_session(&vctx, &vtoken, session_name, initial_uuid)
.await
{
Ok(()) => {
let switch_result = state
.store
.set_active_session_name(&vctx, &vtoken, session_name)
.await;
match switch_result {
Ok(()) => messages::session_new_ok(session_name),
Err(e) => messages::session_new_created_switch_failed(session_name, &e),
}
}
Err(e) => messages::session_new_failed(&e),
}
}
}
}
pub(super) async fn handle_cmd_session_use(
state: &HubState,
from_user_id: &str,
real_ctx: &str,
group_id: Option<&str>,
session_name: &str,
) -> String {
let (vctx, vtoken) = resolve_vctx_and_vtoken(state, real_ctx, from_user_id, group_id).await;
match vtoken {
None => messages::NO_BACKEND.to_string(),
Some(vtoken) => {
let ensure_result: Result<(), String> = match state
.store
.get_backend_session(&vctx, &vtoken, session_name)
.await
{
Ok(None) => state
.store
.set_backend_session(&vctx, &vtoken, session_name, "")
.await
.map_err(|e| messages::session_use_slot_create_failed(&e)),
Err(e) => Err(messages::session_use_query_failed(&e)),
Ok(Some(_)) => Ok(()),
};
match ensure_result {
Err(msg) => msg,
Ok(()) => {
match state
.store
.set_active_session_name(&vctx, &vtoken, session_name)
.await
{
Ok(()) => messages::session_use_ok(session_name),
Err(e) => messages::session_use_failed(&e),
}
}
}
}
}
}
pub(super) async fn handle_cmd_session_delete(
state: &HubState,
from_user_id: &str,
real_ctx: &str,
group_id: Option<&str>,
session_name: &str,
) -> String {
let (vctx, vtoken) = resolve_vctx_and_vtoken(state, real_ctx, from_user_id, group_id).await;
match vtoken {
None => messages::NO_BACKEND.to_string(),
Some(vtoken) => {
let active = state
.store
.get_active_session_name(&vctx, &vtoken)
.await
.unwrap_or_else(|_| "default".to_string());
if session_name == active {
messages::session_delete_active_error(session_name)
} else {
match state
.store
.delete_backend_session(&vctx, &vtoken, session_name)
.await
{
Ok(true) => messages::session_delete_ok(session_name),
Ok(false) => messages::session_delete_not_found(session_name),
Err(e) => messages::session_delete_failed(&e),
}
}
}
}
}
fn build_help_text() -> String {
"iLink Hub 帮助\n\n\
可用指令（括号内为缩写）：\n\
/status（/s）— 查看当前 Hub 状态\n\
/list（/ls）— 列出所有已注册的 AI 后端\n\
/use <名称或序号>（/u <名称或序号>）— 切换到指定的 AI 后端\n\
/help（/h）— 显示此帮助\n\n\
Session 管理（同一后端下的多会话）：\n\
/session list（/sl）— 列出当前对话的所有 sessions\n\
/session new <名称> [UUID]（/sn <名称>）— 创建新 session（可选初始 UUID）\n\
/session use <名称>（/su <名称>）— 切换到指定 session\n\
/session delete <名称>（/sd <名称>）— 删除指定 session\n\n\
快捷 @ 后端：发送 `@<名称或序号> <消息>` 可临时在该后端上**新建一个会话**并发送此消息，不会改变你当前 /use 的后端和活跃 session（与引用回复类似的临时操作）。名称与 /use 使用的名称一致（可用 /list 查看，序号即 /list 中的编号）；名称取第一个空格之前的部分，其余为消息内容。需要继续这个临时会话时，引用它的回复即可。\n\n\
引用回复：引用某条机器人消息后发送的内容，会优先路由到发出该条消息的后端（或 Hub 指令结果），不必依赖当前 /use。\n\
多后端时，各后端回复末尾可能带有「— 工作区名」展示行（仅**同时在线**的后端多于一个时默认追加；历史注册但离线的客户端不计入）。可用环境变量 ILINKHUB_OUTBOUND_ORIGIN_LABEL 强制关/开。\n\n\
关于 iLink Hub：\n\
本服务是一个消息路由中枢，可将您的微信消息转发给已接入的 AI 助手后端进行处理。\n\n\
管理员接入指南：\n\
1. 部署并启动 ilink-hub serve\n\
2. 运行 ilink-hub register --name <名称> 注册后端\n\
3. 将输出的 WEIXIN_TOKEN 配置到您的 AI 服务\n\
4. AI 服务调用 /ilink/bot/getupdates 接收消息，并通过 /ilink/bot/sendmessage 回复"
.to_string()
}