firstBlood.ts

import _ from "lodash";

import { StatDefinition } from "../types";

export const firstBlood: StatDefinition = {
  name: "First Blood",
  type: "number",
  betterDirection: "higher",
  recommendedRounding: 0,
  calculate(games, playerIndex) {
    // For each game return either the first blood stock if taken or null if lost
    const firstBloodStocks = games.map((game, i) => {
      const deathStocks = game.stats.stocks.filter((stock) => {
        const hasEndPercent = stock.endPercent !== null;
        return hasEndPercent;
      });
      const orderedDeathStocks = _.orderBy(deathStocks, ["endFrame"], ["asc"]);
      const firstStock = orderedDeathStocks[0];
      if (!firstStock || firstStock.playerIndex === playerIndex) {
        // console.log(`player ${playerIndex} did not draw first blood in game ${i + 1}`);
        return null;
      }
      return firstStock;
    });
    const firstBloodCount = firstBloodStocks.reduce((count, item) => (item !== null ? count + 1 : count), 0);
    const ratio = firstBloodCount / firstBloodStocks.length;

    const simple = {
      text: isNaN(ratio) ? "N/A" : `${(ratio * 100).toFixed(this.recommendedRounding)}%`,
      number: ratio,
    };

    return {
      result: firstBloodStocks,
      simple,
    };
  },
};