314 lines
8.9 KiB
TypeScript
314 lines
8.9 KiB
TypeScript
'use client'
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import { useCallback, useState, useEffect } from 'react'
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import {
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ReactFlow,
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Controls,
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Background,
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BackgroundVariant,
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useNodesState,
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useEdgesState,
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addEdge,
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Connection,
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MarkerType,
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Panel,
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} from '@xyflow/react'
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import '@xyflow/react/dist/style.css'
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import FunnelNode from './nodes/FunnelNode'
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import type { FlowNode, FlowEdge, FunnelNodeData } from '@/lib/types'
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const nodeTypes = {
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funnel: FunnelNode,
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}
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// Color palette for allocations
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const COLORS = ['#3b82f6', '#8b5cf6', '#ec4899', '#f59e0b', '#10b981', '#06b6d4']
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const initialNodes: FlowNode[] = [
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{
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id: 'treasury',
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type: 'funnel',
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position: { x: 400, y: 0 },
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data: {
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label: 'Treasury',
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currentValue: 85000,
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minThreshold: 20000,
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maxThreshold: 70000,
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maxCapacity: 100000,
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inflowRate: 1000,
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outflowAllocations: [
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{ targetId: 'public-goods', percentage: 40, color: COLORS[0] },
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{ targetId: 'research', percentage: 35, color: COLORS[1] },
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{ targetId: 'emergency', percentage: 25, color: COLORS[2] },
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],
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},
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},
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{
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id: 'public-goods',
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type: 'funnel',
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position: { x: 100, y: 350 },
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data: {
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label: 'Public Goods',
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currentValue: 45000,
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minThreshold: 15000,
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maxThreshold: 50000,
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maxCapacity: 70000,
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inflowRate: 400,
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outflowAllocations: [
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{ targetId: 'project-alpha', percentage: 60, color: COLORS[0] },
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{ targetId: 'project-beta', percentage: 40, color: COLORS[1] },
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],
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},
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},
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{
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id: 'research',
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type: 'funnel',
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position: { x: 400, y: 350 },
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data: {
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label: 'Research',
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currentValue: 28000,
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minThreshold: 20000,
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maxThreshold: 45000,
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maxCapacity: 60000,
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inflowRate: 350,
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outflowAllocations: [
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{ targetId: 'project-gamma', percentage: 70, color: COLORS[0] },
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{ targetId: 'project-beta', percentage: 30, color: COLORS[1] },
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],
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},
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},
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{
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id: 'emergency',
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type: 'funnel',
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position: { x: 700, y: 350 },
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data: {
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label: 'Emergency',
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currentValue: 12000,
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minThreshold: 25000,
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maxThreshold: 60000,
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maxCapacity: 80000,
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inflowRate: 250,
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outflowAllocations: [
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{ targetId: 'reserve', percentage: 100, color: COLORS[0] },
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],
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},
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},
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{
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id: 'project-alpha',
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type: 'funnel',
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position: { x: 0, y: 700 },
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data: {
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label: 'Project Alpha',
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currentValue: 18000,
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minThreshold: 10000,
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maxThreshold: 30000,
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maxCapacity: 40000,
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inflowRate: 240,
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outflowAllocations: [],
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},
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},
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{
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id: 'project-beta',
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type: 'funnel',
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position: { x: 300, y: 700 },
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data: {
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label: 'Project Beta',
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currentValue: 22000,
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minThreshold: 15000,
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maxThreshold: 35000,
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maxCapacity: 45000,
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inflowRate: 265,
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outflowAllocations: [],
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},
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},
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{
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id: 'project-gamma',
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type: 'funnel',
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position: { x: 600, y: 700 },
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data: {
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label: 'Project Gamma',
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currentValue: 8000,
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minThreshold: 12000,
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maxThreshold: 28000,
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maxCapacity: 35000,
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inflowRate: 245,
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outflowAllocations: [],
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},
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},
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{
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id: 'reserve',
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type: 'funnel',
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position: { x: 900, y: 700 },
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data: {
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label: 'Reserve',
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currentValue: 5000,
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minThreshold: 20000,
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maxThreshold: 50000,
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maxCapacity: 60000,
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inflowRate: 250,
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outflowAllocations: [],
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},
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},
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]
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// Generate edges from node allocations with proportional thickness
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function generateEdges(nodes: FlowNode[]): FlowEdge[] {
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const edges: FlowEdge[] = []
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const maxAllocation = 100 // Max percentage for scaling
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nodes.forEach((node) => {
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const data = node.data as FunnelNodeData
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data.outflowAllocations.forEach((alloc) => {
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// Calculate stroke width: min 2px, max 12px based on percentage
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const strokeWidth = 2 + (alloc.percentage / maxAllocation) * 10
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edges.push({
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id: `e-${node.id}-${alloc.targetId}`,
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source: node.id,
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target: alloc.targetId,
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animated: true,
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style: {
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stroke: alloc.color,
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strokeWidth,
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opacity: 0.8,
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},
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markerEnd: {
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type: MarkerType.ArrowClosed,
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color: alloc.color,
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width: 15 + alloc.percentage / 10,
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height: 15 + alloc.percentage / 10,
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},
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data: {
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allocation: alloc.percentage,
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color: alloc.color,
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},
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})
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})
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})
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return edges
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}
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export default function FlowCanvas() {
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const [nodes, setNodes, onNodesChange] = useNodesState(initialNodes)
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const [edges, setEdges, onEdgesChange] = useEdgesState(generateEdges(initialNodes))
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const [isSimulating, setIsSimulating] = useState(true)
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const onConnect = useCallback(
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(params: Connection) =>
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setEdges((eds) =>
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addEdge(
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{
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...params,
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animated: true,
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style: { stroke: '#64748b', strokeWidth: 4 },
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markerEnd: { type: MarkerType.ArrowClosed, color: '#64748b' },
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},
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eds
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)
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),
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[setEdges]
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)
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// Simulation effect
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useEffect(() => {
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if (!isSimulating) return
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const interval = setInterval(() => {
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setNodes((nds) =>
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nds.map((node) => {
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const data = node.data as FunnelNodeData
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// Random walk for demo
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const change = (Math.random() - 0.45) * 300
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return {
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...node,
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data: {
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...data,
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currentValue: Math.max(0, Math.min(data.maxCapacity * 1.1, data.currentValue + change)),
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},
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}
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})
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)
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}, 500)
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return () => clearInterval(interval)
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}, [isSimulating, setNodes])
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// Regenerate edges when nodes change (to update proportions if needed)
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useEffect(() => {
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setEdges(generateEdges(nodes))
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}, [nodes, setEdges])
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return (
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<div className="w-full h-full">
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<ReactFlow
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nodes={nodes}
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edges={edges}
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onNodesChange={onNodesChange}
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onEdgesChange={onEdgesChange}
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onConnect={onConnect}
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nodeTypes={nodeTypes}
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fitView
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fitViewOptions={{ padding: 0.1 }}
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className="bg-slate-50"
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>
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<Background variant={BackgroundVariant.Dots} gap={20} size={1} color="#e2e8f0" />
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<Controls className="bg-white border border-slate-200 rounded-lg shadow-sm" />
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{/* Title Panel */}
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<Panel position="top-left" className="bg-white rounded-lg shadow-lg border border-slate-200 p-4 m-4">
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<h1 className="text-xl font-bold text-slate-800">Threshold-Based Flow Funding</h1>
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<p className="text-sm text-slate-500 mt-1">Drag min/max handles • Line thickness = allocation %</p>
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</Panel>
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{/* Simulation Toggle */}
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<Panel position="top-right" className="m-4">
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<button
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onClick={() => setIsSimulating(!isSimulating)}
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className={`px-4 py-2 rounded-lg font-medium shadow-sm transition-all ${
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isSimulating
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? 'bg-emerald-500 text-white hover:bg-emerald-600'
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: 'bg-slate-200 text-slate-700 hover:bg-slate-300'
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}`}
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>
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{isSimulating ? '⏸ Pause' : '▶ Start'}
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</button>
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</Panel>
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{/* Legend */}
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<Panel position="bottom-left" className="bg-white rounded-lg shadow-lg border border-slate-200 p-4 m-4">
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<div className="text-xs font-medium text-slate-500 uppercase tracking-wide mb-3">Funnel Zones</div>
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<div className="space-y-2 text-sm">
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<div className="flex items-center gap-2">
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<div className="w-4 h-4 rounded bg-amber-200 border border-amber-400" />
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<span className="text-slate-600">Overflow (above MAX)</span>
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</div>
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<div className="flex items-center gap-2">
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<div className="w-4 h-4 rounded bg-emerald-200 border border-emerald-400" />
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<span className="text-slate-600">Healthy (MIN to MAX)</span>
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</div>
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<div className="flex items-center gap-2">
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<div className="w-4 h-4 rounded bg-red-200 border border-red-400" />
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<span className="text-slate-600">Critical (below MIN)</span>
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</div>
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</div>
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<div className="border-t border-slate-200 mt-3 pt-3">
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<div className="text-xs font-medium text-slate-500 uppercase tracking-wide mb-2">Flow Lines</div>
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<div className="space-y-1 text-xs text-slate-600">
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<div className="flex items-center gap-2">
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<div className="w-8 h-1 bg-blue-500 rounded" />
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<span>Thin = small allocation</span>
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</div>
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<div className="flex items-center gap-2">
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<div className="w-8 h-3 bg-blue-500 rounded" />
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<span>Thick = large allocation</span>
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</div>
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</div>
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</div>
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</Panel>
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</ReactFlow>
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</div>
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)
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}
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