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import { useCallback } from 'react'
import produce from 'immer'
import type {
EdgeMouseHandler,
OnEdgesChange,
} from 'reactflow'
import {
getConnectedEdges,
useStoreApi,
} from 'reactflow'
import type {
Edge,
Node,
} from '../types'
import { BlockEnum } from '../types'
import { getNodesConnectedSourceOrTargetHandleIdsMap } from '../utils'
import { useNodesSyncDraft } from './use-nodes-sync-draft'
import { useNodesReadOnly } from './use-workflow'
export const useEdgesInteractions = () => {
const store = useStoreApi()
const { handleSyncWorkflowDraft } = useNodesSyncDraft()
const { getNodesReadOnly } = useNodesReadOnly()
const handleEdgeEnter = useCallback<EdgeMouseHandler>((_, edge) => {
if (getNodesReadOnly())
return
const {
edges,
setEdges,
} = store.getState()
const newEdges = produce(edges, (draft) => {
const currentEdge = draft.find(e => e.id === edge.id)!
currentEdge.data._hovering = true
})
setEdges(newEdges)
}, [store, getNodesReadOnly])
const handleEdgeLeave = useCallback<EdgeMouseHandler>((_, edge) => {
if (getNodesReadOnly())
return
const {
edges,
setEdges,
} = store.getState()
const newEdges = produce(edges, (draft) => {
const currentEdge = draft.find(e => e.id === edge.id)!
currentEdge.data._hovering = false
})
setEdges(newEdges)
}, [store, getNodesReadOnly])
const handleEdgeDeleteByDeleteBranch = useCallback((nodeId: string, branchId: string) => {
if (getNodesReadOnly())
return
const {
getNodes,
setNodes,
edges,
setEdges,
} = store.getState()
const currentEdgeIndex = edges.findIndex(edge => edge.source === nodeId && edge.sourceHandle === branchId)
if (currentEdgeIndex < 0)
return
const currentEdge = edges[currentEdgeIndex]
const newNodes = produce(getNodes(), (draft: Node[]) => {
const sourceNode = draft.find(node => node.id === currentEdge.source)
const targetNode = draft.find(node => node.id === currentEdge.target)
if (sourceNode)
sourceNode.data._connectedSourceHandleIds = sourceNode.data._connectedSourceHandleIds?.filter(handleId => handleId !== currentEdge.sourceHandle)
if (targetNode)
targetNode.data._connectedTargetHandleIds = targetNode.data._connectedTargetHandleIds?.filter(handleId => handleId !== currentEdge.targetHandle)
})
setNodes(newNodes)
const newEdges = produce(edges, (draft) => {
draft.splice(currentEdgeIndex, 1)
})
setEdges(newEdges)
handleSyncWorkflowDraft()
}, [store, handleSyncWorkflowDraft, getNodesReadOnly])
const handleEdgeDelete = useCallback(() => {
if (getNodesReadOnly())
return
const {
getNodes,
setNodes,
edges,
setEdges,
} = store.getState()
const currentEdgeIndex = edges.findIndex(edge => edge.selected)
if (currentEdgeIndex < 0)
return
const currentEdge = edges[currentEdgeIndex]
const nodes = getNodes()
const nodesConnectedSourceOrTargetHandleIdsMap = getNodesConnectedSourceOrTargetHandleIdsMap(
[
{ type: 'remove', edge: currentEdge },
],
nodes,
)
const newNodes = produce(nodes, (draft: Node[]) => {
draft.forEach((node) => {
if (nodesConnectedSourceOrTargetHandleIdsMap[node.id]) {
node.data = {
...node.data,
...nodesConnectedSourceOrTargetHandleIdsMap[node.id],
}
}
})
})
setNodes(newNodes)
const newEdges = produce(edges, (draft) => {
draft.splice(currentEdgeIndex, 1)
})
setEdges(newEdges)
handleSyncWorkflowDraft()
}, [store, getNodesReadOnly, handleSyncWorkflowDraft])
const handleEdgesChange = useCallback<OnEdgesChange>((changes) => {
if (getNodesReadOnly())
return
const {
edges,
setEdges,
} = store.getState()
const newEdges = produce(edges, (draft) => {
changes.forEach((change) => {
if (change.type === 'select')
draft.find(edge => edge.id === change.id)!.selected = change.selected
})
})
setEdges(newEdges)
}, [store, getNodesReadOnly])
const handleVariableAssignerEdgesChange = useCallback((nodeId: string, variables: any) => {
const {
getNodes,
setNodes,
edges,
setEdges,
} = store.getState()
const nodes = getNodes()
const newEdgesTargetHandleIds = variables.map((item: any) => item[0])
const connectedEdges = getConnectedEdges([{ id: nodeId } as Node], edges).filter(edge => edge.target === nodeId)
const needDeleteEdges = connectedEdges.filter(edge => !newEdgesTargetHandleIds.includes(edge.targetHandle))
const needAddEdgesTargetHandleIds = newEdgesTargetHandleIds.filter((targetHandle: string) => !connectedEdges.some(edge => edge.targetHandle === targetHandle))
const needAddEdges = needAddEdgesTargetHandleIds.map((targetHandle: string) => {
return {
id: `${targetHandle}-${nodeId}`,
type: 'custom',
source: targetHandle,
sourceHandle: 'source',
target: nodeId,
targetHandle,
data: {
sourceType: nodes.find(node => node.id === targetHandle)?.data.type,
targetType: BlockEnum.VariableAssigner,
},
}
})
const nodesConnectedSourceOrTargetHandleIdsMap = getNodesConnectedSourceOrTargetHandleIdsMap(
[
...needDeleteEdges.map(edge => ({ type: 'remove', edge })),
...needAddEdges.map((edge: Edge) => ({ type: 'add', edge })),
],
nodes,
)
const newNodes = produce(nodes, (draft) => {
draft.forEach((node) => {
if (nodesConnectedSourceOrTargetHandleIdsMap[node.id]) {
node.data = {
...node.data,
...nodesConnectedSourceOrTargetHandleIdsMap[node.id],
}
}
})
})
setNodes(newNodes)
const newEdges = produce(edges, (draft) => {
const filtered = draft.filter(edge => !needDeleteEdges.map(needDeleteEdge => needDeleteEdge.id).includes(edge.id))
filtered.push(...needAddEdges)
return filtered
})
setEdges(newEdges)
}, [store])
const handleEdgeCancelRunningStatus = useCallback(() => {
const {
edges,
setEdges,
} = store.getState()
const newEdges = produce(edges, (draft) => {
draft.forEach((edge) => {
edge.data._runned = false
})
})
setEdges(newEdges)
}, [store])
return {
handleEdgeEnter,
handleEdgeLeave,
handleEdgeDeleteByDeleteBranch,
handleEdgeDelete,
handleEdgesChange,
handleVariableAssignerEdgesChange,
handleEdgeCancelRunningStatus,
}
}
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