feat: Agent一键安装(loading/成功/失败状态无弹框) + 批量安装API

backend/internal/api/handlers/agent_install.go

@@ -144,3 +144,113 @@ func (h *AgentInstallHandler) InstallAgent(c *gin.Context) {
 		},
 	})
 }
+
+// installOne 安装单个服务器的 Agent（内部方法）
+func (h *AgentInstallHandler) installOne(server models.Server, serverURL, token string) (bool, string, string, error) {
+	client, err := sshDial(server)
+	if err != nil {
+		return false, "", "", fmt.Errorf("SSH连接失败: %w", err)
+	}
+	defer client.Close()
+
+	if server.Status != "running" {
+		return false, "", "", fmt.Errorf("服务器未运行")
+	}
+
+	installCmd := fmt.Sprintf(
+		`curl -fsSL %s/agent/install.sh | sudo bash -s -- --server %s --token %s`,
+		serverURL, serverURL, token,
+	)
+
+	installOut, err := runSSHCommand(client, installCmd)
+	if err != nil {
+		return false, installOut, "", err
+	}
+
+	verifyOut, _ := runSSHCommand(client, "systemctl is-active aiops-agent 2>/dev/null || echo 'not_found'")
+	installed := contains(verifyOut, "active") || contains(verifyOut, "running")
+
+	if installed {
+		h.db.Model(&server).Updates(map[string]interface{}{
+			"agent_status":  "online",
+			"agent_version": "installed",
+			"last_check_at": time.Now(),
+		})
+	}
+
+	return installed, installOut, verifyOut, nil
+}
+
+// BatchInstallAgent 批量安装 Agent
+// POST /servers/install-agent
+func (h *AgentInstallHandler) BatchInstallAgent(c *gin.Context) {
+	var req struct {
+		ServerIDs []uint `json:"server_ids"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil || len(req.ServerIDs) == 0 {
+		c.JSON(http.StatusBadRequest, models.Response{Code: 400, Message: "请提供要安装的服务器 ID 列表"})
+		return
+	}
+
+	serverURL := fmt.Sprintf("http://%s", c.Request.Host)
+	token := c.Query("token")
+
+	type InstallResult struct {
+		ServerID  uint   `json:"server_id"`
+		Hostname  string `json:"hostname"`
+		IP        string `json:"ip"`
+		Success   bool   `json:"success"`
+		Message   string `json:"message"`
+		Installed bool   `json:"installed"`
+	}
+
+	results := make([]InstallResult, 0, len(req.ServerIDs))
+	successCount := 0
+
+	for _, sid := range req.ServerIDs {
+		var server models.Server
+		if err := h.db.First(&server, sid).Error; err != nil {
+			results = append(results, InstallResult{
+				ServerID: sid,
+				Success:  false,
+				Message:  "服务器不存在",
+			})
+			continue
+		}
+
+		installed, _, _, err := h.installOne(server, serverURL, token)
+		if err != nil {
+			results = append(results, InstallResult{
+				ServerID: server.ID,
+				Hostname: server.Hostname,
+				IP:       server.IP,
+				Success:  false,
+				Message:  err.Error(),
+			})
+		} else {
+			successCount++
+			msg := "安装成功"
+			if !installed {
+				msg = "安装命令已执行，Agent 服务未检测到运行"
+			}
+			results = append(results, InstallResult{
+				ServerID:  server.ID,
+				Hostname:  server.Hostname,
+				IP:        server.IP,
+				Success:   true,
+				Installed: installed,
+				Message:   msg,
+			})
+		}
+	}
+
+	c.JSON(http.StatusOK, models.Response{
+		Code:    200,
+		Message: fmt.Sprintf("完成 %d/%d 台服务器", successCount, len(req.ServerIDs)),
+		Data: gin.H{
+			"total":   len(req.ServerIDs),
+			"success": successCount,
+			"results": results,
+		},
+	})
+}