// Interactive forestry financial model simulator. // It will use React for the UI, recharts for data visualization, and custom slider components. // The server will render the initial HTML, and the client-side JavaScript will handle the interactivity. /** @jsxImportSource https://esm.sh/react */ import React, { useState } from "https://esm.sh/react"; import { createRoot } from "https://esm.sh/react-dom/client"; import { LineChart, Line, XAxis, YAxis, CartesianGrid, Tooltip, Legend, ResponsiveContainer } from "https://esm.sh/recharts"; // Custom Slider component const Slider = ({ value, onChange, min, max, step }) => ( onChange(Number(e.target.value))} className="w-full" /> ); function App() { const [landSize, setLandSize] = useState(1000); const [sections, setSections] = useState(5); const [cycleLength, setCycleLength] = useState(25); const [timberId, setTimberId] = useState(200); const [harvestCost, setHarvestCost] = useState(30); const [timberPrice, setTimberPrice] = useState(150); const [annualCosts, setAnnualCosts] = useState(100); const [disasterChance, setDisasterChance] = useState(1); const calculateYearlyData = () => { let data = []; const initialInvestment = landSize * 5000; let cumulativeProfit = -initialInvestment; let sectionSize = landSize / sections; for (let year = 0; year <= cycleLength; year++) { let annualRevenue = 0; let annualCost = landSize * annualCosts; if (Math.random() * 100 < disasterChance) { annualCost += landSize * 1000; } if (year % (cycleLength / sections) === 0 && year !== 0) { const harvestedTrees = sectionSize * timberId; const harvestRevenue = harvestedTrees * timberPrice; const harvestCosts = harvestedTrees * harvestCost; annualRevenue += harvestRevenue - harvestCosts; } cumulativeProfit += annualRevenue - annualCost; data.push({ year, cumulativeProfit: Math.round(cumulativeProfit), annualRevenue: Math.round(annualRevenue), annualCost: Math.round(annualCost) }); } return data; }; const data = calculateYearlyData(); return (

Advanced Forestry Financial Model Explorer

Land Size (acres): {landSize}

Number of Sections: {sections}

Cycle Length (years): {cycleLength}

Timber Density (trees/acre): {timberId}

Harvest Cost ($/tree): {harvestCost}

Timber Price ($/tree): {timberPrice}

Annual Costs ($/acre): {annualCosts}

Disaster Chance (%/year): {disasterChance}

View source: Val Town

); } function client() { createRoot(document.getElementById("root")).render(); } if (typeof document !== "undefined") { client(); } export default async function server(request: Request): Promise { return new Response(` Advanced Forestry Financial Model

`, { headers: { "content-type": "text/html", }, }); } const css = ` body { margin: 0; font-family: system-ui, sans-serif; } `;

ForestryFinancialModel

Version 1