feat: add team process API.

backend/internal/api/team_process.go

@@ -63,10 +63,21 @@ type TeamProcessState struct {
 	Completed  int32               `json:"completed"`
 	Results    []TeamProcessResult `json:"results"`
 	mu         sync.Mutex
+	stopCh     chan struct{} // 停止信号 channel，close 后所有 select 立即返回
 }
 
 var teamProcessState = &TeamProcessState{}
 
+// isStopped 检查是否已收到停止信号（非阻塞）
+func isStopped() bool {
+	select {
+	case <-teamProcessState.stopCh:
+		return true
+	default:
+		return false
+	}
+}
+
 // waitGroupWithTimeout 带超时的 WaitGroup 等待，超时返回 false
 func waitGroupWithTimeout(wg *sync.WaitGroup, timeout time.Duration) bool {
 	done := make(chan struct{})
@@ -74,6 +85,8 @@ func waitGroupWithTimeout(wg *sync.WaitGroup, timeout time.Duration) bool {
 	select {
 	case <-done:
 		return true
+	case <-teamProcessState.stopCh:
+		return false
 	case <-time.After(timeout):
 		return false
 	}
@@ -188,6 +201,7 @@ func HandleTeamProcess(w http.ResponseWriter, r *http.Request) {
 
 	// 初始化状态
 	teamProcessState.Running = true
+	teamProcessState.stopCh = make(chan struct{})
 	teamProcessState.StartedAt = time.Now()
 	teamProcessState.TotalTeams = len(req.Owners) // 所有 owners 都会处理
 	teamProcessState.Completed = 0
@@ -232,6 +246,16 @@ func HandleTeamProcessStop(w http.ResponseWriter, r *http.Request) {
 	}
 
 	teamProcessState.Running = false
+	// 关闭 stopCh 广播停止信号，所有 select 监听的 goroutine 立即唤醒
+	if teamProcessState.stopCh != nil {
+		select {
+		case <-teamProcessState.stopCh:
+			// 已经关闭过了，不重复关闭
+		default:
+			close(teamProcessState.stopCh)
+		}
+	}
+	logger.Warning("收到停止信号，正在终止所有处理...", "", "team")
 	Success(w, map[string]string{"message": "已发送停止信号"})
 }
 
@@ -373,7 +397,7 @@ func runTeamProcess(req TeamProcessRequest) {
 		go func(workerID int) {
 			defer wg.Done()
 			for idx := range taskChan {
-				if !teamProcessState.Running {
+				if isStopped() {
 					return
 				}
 				result := processSingleTeam(idx, req)
@@ -386,10 +410,14 @@ func runTeamProcess(req TeamProcessRequest) {
 	// 发送任务
 	go func() {
 		for i := 0; i < totalOwners; i++ {
-			if !teamProcessState.Running {
+			select {
+			case <-teamProcessState.stopCh:
+				break
+			case taskChan <- i:
+			}
+			if isStopped() {
 				break
 			}
-			taskChan <- i
 		}
 		close(taskChan)
 	}()
@@ -660,9 +688,17 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 		memberLogPrefix := fmt.Sprintf("%s [Member %d]", logPrefix, memberIdx+1)
 		memberStartTime := time.Now()
 
-		// 获取入库信号量（3分钟超时）
+		// 检查停止信号
+		if isStopped() {
+			return false
+		}
+
+		// 获取入库信号量（3分钟超时，可被停止信号中断）
 		select {
 		case s2aSem <- struct{}{}:
+		case <-teamProcessState.stopCh:
+			logger.Warning(fmt.Sprintf("%s 收到停止信号，跳过入库", memberLogPrefix), memberEmail, "team")
+			return false
 		case <-time.After(3 * time.Minute):
 			logger.Warning(fmt.Sprintf("%s 入库信号量等待超时 (3分钟)", memberLogPrefix), memberEmail, "team")
 			atomic.AddInt32(&s2aFailCount, 1)
@@ -685,6 +721,10 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 		var lastError string
 
 		for attempt := 0; attempt < 2; attempt++ { // 最多重试1次
+			// 检查停止信号
+			if isStopped() {
+				return false
+			}
 			if attempt > 0 {
 				logger.Warning(fmt.Sprintf("%s 入库重试 (第%d次)", memberLogPrefix, attempt+1), memberEmail, "team")
 			}
@@ -778,7 +818,7 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 
 		for attempt := 0; attempt < 2; attempt++ { // 最多尝试2次（首次+1次重试）
 			// 检查是否应该停止
-			if !teamProcessState.Running || isTeamExhausted() {
+			if isStopped() || isTeamExhausted() {
 				return false
 			}
 
@@ -835,8 +875,12 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 			s2aWg.Add(1)
 			go func(idx int, e, p string) {
 				defer s2aWg.Done()
-				// 等待 3 秒，让账号状态稳定
-				time.Sleep(3 * time.Second)
+				// 等待 3 秒，让账号状态稳定（可被停止信号中断）
+				select {
+				case <-time.After(3 * time.Second):
+				case <-teamProcessState.stopCh:
+					return
+				}
 				success := doS2A(idx, e, p)
 				memberMu.Lock()
 				children[idx].S2ADone = true
@@ -859,7 +903,7 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 		go func(idx int) {
 			defer regWg.Done()
 			// 检查是否应该停止
-			if isTeamExhausted() {
+			if isStopped() || isTeamExhausted() {
 				return
 			}
 			email := mail.GenerateEmail()
@@ -893,7 +937,7 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 
 	// 第二轮：Team 有 4 次额外补救机会（如果 Team 未满）
 	teamRetries := 4
-	for retry := 0; retry < teamRetries && len(failedSlots) > 0 && teamProcessState.Running && !isTeamExhausted(); retry++ {
+	for retry := 0; retry < teamRetries && len(failedSlots) > 0 && !isStopped() && !isTeamExhausted(); retry++ {
 		slotIdx := failedSlots[0]
 		logger.Warning(fmt.Sprintf("%s [补救 %d/%d] 尝试补充成员 %d", logPrefix, retry+1, teamRetries, slotIdx+1), owner.Email, "team")
 
@@ -936,7 +980,7 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 	}
 
 	// Step 4: 母号也入库（如果开启）- 带重试
-	if req.IncludeOwner && teamProcessState.Running {
+	if req.IncludeOwner && !isStopped() {
 		ownerLogPrefix := fmt.Sprintf("%s [母号  ]", logPrefix)
 		ownerStartTime := time.Now()
 		logger.Status(fmt.Sprintf("%s 母号入库中...", ownerLogPrefix), owner.Email, "team")
@@ -944,6 +988,10 @@ func processSingleTeam(idx int, req TeamProcessRequest) (result TeamProcessResul
 		var ownerSuccess bool
 		var lastError string
 		for attempt := 0; attempt < 2; attempt++ { // 最多重试1次
+			// 检查停止信号
+			if isStopped() {
+				break
+			}
 			if attempt > 0 {
 				logger.Warning(fmt.Sprintf("%s 入库重试 (第%d次)", ownerLogPrefix, attempt+1), owner.Email, "team")
 			}