pruncalc/dist/recipes.js

// src/recipes.ts
async function fetchData() {
  const [buildingsResponse, recipesResponse, exchangesResponse] = await Promise.all([
    fetch("https://api.prunplanner.org/data/buildings"),
    fetch("https://api.prunplanner.org/data/recipes"),
    fetch("https://api.prunplanner.org/data/exchanges")
  ]);
  const [buildings, recipes, prices] = await Promise.all([
    buildingsResponse.json(),
    recipesResponse.json(),
    exchangesResponse.json()
  ]);
  return { buildings, recipes, prices };
}
function render({ buildings, recipes, prices }) {
  const priceMap = new Map;
  for (const price of prices)
    if (price.ExchangeCode == "PP7D_IC1")
      priceMap.set(price.MaterialTicker, price);
  const buildingMap = new Map;
  for (const building of buildings) {
    const cost = building.BuildingCosts.reduce((sum, mat) => {
      const price = priceMap.get(mat.CommodityTicker);
      if (price === undefined)
        throw new Error(`missing price for ${mat.CommodityTicker}`);
      return sum + price.PriceAverage * mat.Amount;
    }, 0);
    buildingMap.set(building.Ticker, cost);
  }
  const profits = [];
  for (const recipe of recipes) {
    const runsPerDay = 1000 * 60 * 60 * 24 / recipe.TimeMs;
    if (recipe.Outputs.length !== 1) {
      console.warn(`${recipe.RecipeName} doesn't have 1 output`);
      continue;
    }
    const output = recipe.Outputs[0];
    const outputPrice = priceMap.get(output.Ticker);
    if (outputPrice === undefined)
      throw new Error(`missing price for ${output.Ticker}`);
    const revenuePerRun = output.Amount * outputPrice.PriceAverage;
    const costPerRun = recipe.Inputs.reduce((sum, input) => {
      const price = priceMap.get(input.Ticker);
      if (price === undefined)
        throw new Error(`missing price for ${input.Ticker}`);
      return sum + price.PriceAverage * input.Amount;
    }, 0);
    const dailyProfit = (revenuePerRun - costPerRun) * runsPerDay;
    const buildingCost = buildingMap.get(recipe.BuildingTicker);
    if (buildingCost === undefined)
      throw new Error(`missing building cost for ${recipe.BuildingTicker}`);
    if (outputPrice.Traded === 0 || buildingCost > 1200000)
      continue;
    profits.push({
      recipeName: recipe.RecipeName,
      dailyProfit,
      traded: outputPrice.Traded,
      priceAverage: outputPrice.PriceAverage,
      buildingCost
    });
  }
  profits.sort((a, b) => b.dailyProfit - a.dailyProfit);
  const fmt = new Intl.NumberFormat(undefined, { maximumFractionDigits: 2 });
  const tbody = document.querySelector("tbody");
  tbody.innerHTML = "";
  for (const profit of profits) {
    const row = document.createElement("tr");
    row.innerHTML = `
			<td>${profit.recipeName}</td>
			<td>${fmt.format(profit.dailyProfit)}</td>
			<td>${fmt.format(profit.traded * profit.priceAverage)}</td>
			<td>${fmt.format(profit.traded)}</td>
			<td>${fmt.format(profit.buildingCost)}</td>
		`;
    tbody.appendChild(row);
  }
}
fetchData().then(render);

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