feat: add checkvalid empty fn

web/app/components/workflow/nodes/answer/default.ts

@@ -14,6 +14,18 @@ const nodeDefault: NodeDefault<AnswerNodeType> = {
   getAvailableNextNodes() {
     return []
   },
+  checkValid(payload: AnswerNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/code/default.ts

@@ -17,6 +17,18 @@ const nodeDefault: NodeDefault<CodeNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
+  checkValid(payload: CodeNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/end/default.ts

@@ -13,6 +13,18 @@ const nodeDefault: NodeDefault<EndNodeType> = {
   getAvailableNextNodes() {
     return []
   },
+  checkValid(payload: EndNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/http/default.ts

@@ -26,6 +26,18 @@ const nodeDefault: NodeDefault<HttpNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
+  checkValid(payload: HttpNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/if-else/default.ts

@@ -25,6 +25,18 @@ const nodeDefault: NodeDefault<IfElseNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
+  checkValid(payload: IfElseNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/knowledge-retrieval/default.ts

@@ -18,6 +18,18 @@ const nodeDefault: NodeDefault<KnowledgeRetrievalNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
+  checkValid(payload: KnowledgeRetrievalNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/llm/default.ts

@@ -33,6 +33,18 @@ const nodeDefault: NodeDefault<LLMNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
+  checkValid(payload: LLMNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/question-classifier/default.ts

@@ -23,6 +23,18 @@ const nodeDefault: NodeDefault<QuestionClassifierNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
+  checkValid(payload: QuestionClassifierNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/start/default.ts

@@ -14,6 +14,11 @@ const nodeDefault: NodeDefault<StartNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
+  checkValid() {
+    return {
+      isValid: true,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/template-transform/default.ts

@@ -14,6 +14,18 @@ const nodeDefault: NodeDefault<TemplateTransformNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
+  checkValid(payload: TemplateTransformNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/tool/default.ts

@@ -15,6 +15,18 @@ const nodeDefault: NodeDefault<ToolNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
+  checkValid(payload: ToolNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/nodes/variable-assigner/default.ts

@@ -1,10 +1,10 @@
-import type { NodeDefault } from '../../types'
+import { type NodeDefault, VarType } from '../../types'
 import type { VariableAssignerNodeType } from './types'
 import { ALL_CHAT_AVAILABLE_BLOCKS, ALL_COMPLETION_AVAILABLE_BLOCKS } from '@/app/components/workflow/constants'
 
 const nodeDefault: NodeDefault<VariableAssignerNodeType> = {
   defaultValue: {
-    output_type: 'string',
+    output_type: VarType.string,
     variables: [],
   },
   getAvailablePrevNodes(isChatMode: boolean) {
@@ -15,6 +15,18 @@ const nodeDefault: NodeDefault<VariableAssignerNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
+  checkValid(payload: VariableAssignerNodeType) {
+    let isValid = true
+    let errorMessages = ''
+    if (payload.type) {
+      isValid = true
+      errorMessages = ''
+    }
+    return {
+      isValid,
+      errorMessage: errorMessages,
+    }
+  },
 }
 
 export default nodeDefault

web/app/components/workflow/types.ts

@@ -159,6 +159,7 @@ export type NodeDefault<T> = {
   defaultValue: Partial<T>
   getAvailablePrevNodes: (isChatMode: boolean) => BlockEnum[]
   getAvailableNextNodes: (isChatMode: boolean) => BlockEnum[]
+  checkValid: (payload: T) => { isValid: boolean; errorMessage?: string }
 }
 
 export type OnSelectBlock = (type: BlockEnum, toolDefaultValue?: ToolDefaultValue) => void