feat: flow design & page query refactor

server/internal/flow/application/node_end.go

@@ -0,0 +1,61 @@
+package application
+
+import (
+	"context"
+	"errors"
+	"mayfly-go/internal/flow/domain/entity"
+)
+
+/******************* 结束节点 *******************/
+
+const FlowNodeTypeEnd entity.FlowNodeType = "end" // 开始节点
+
+// EndNodeBehavior 结束节点
+type EndNodeBehavior struct {
+	DefaultNodeBehavior
+}
+
+var _ NodeBehavior = (*EndNodeBehavior)(nil)
+
+func (h *EndNodeBehavior) GetType() entity.FlowNodeType {
+	return FlowNodeTypeEnd
+}
+
+func (h *EndNodeBehavior) Validate(ctx context.Context, flowDef *entity.FlowDef, node *entity.FlowNode) error {
+	// 检查是否有连线指向结束节点
+	hasIncomingEdge := false
+	for _, edge := range flowDef.Edges {
+		if edge.TargetNodeKey == node.Key {
+			hasIncomingEdge = true
+			break
+		}
+	}
+	if !hasIncomingEdge {
+		return errors.New("end node not has incoming edge")
+	}
+
+	return nil
+}
+
+func (h *EndNodeBehavior) Execute(ctx *ExecutionCtx) error {
+	// 执行流状态变为已完成
+	execution := ctx.Execution
+	execution.State = entity.ExectionStateCompleted
+
+	procinstApp := GetProcinstApp()
+	exectuionApp := GetExecutionApp()
+
+	if err := procinstApp.Tx(ctx, func(c context.Context) error {
+		if ctx.GetProcinst().Status == entity.ProcinstStatusActive {
+			if err := procinstApp.CompletedProc(c, ctx.Procinst.Id); err != nil {
+				return err
+			}
+		}
+
+		return exectuionApp.Save(c, execution)
+	}); err != nil {
+		return err
+	}
+
+	return h.Leave(ctx)
+}