import { readFile, writeFile } from "node:fs/promises";
import { join } from "node:path";

async function compare() {
  const csvContent = await readFile("measure.csv", "utf-8");
  const lines = csvContent.split("\n").slice(1);
  const predictions = JSON.parse(await readFile("sample/results.json", "utf-8"));
  
  const diffMap: any = { "Oni": "oni", "Edit": "ura", "Ura": "ura" };
  const comparison = predictions.map((p: any) => {
    const songno = p.file.match(/(\d+)\.tja/)?.[1];
    const match = lines.find(l => l.split(",")[1] === songno && l.split(",")[2] === diffMap[p.course]);
    const actual = match ? parseFloat(match.split(",")[0]) : null;
    return { title: p.title, actual, predicted: parseFloat(p.predicted), diff: actual ? (actual - parseFloat(p.predicted)).toFixed(2) : null };
  });

  await writeFile("sample/comparison.json", JSON.stringify(comparison, null, 2));
  console.log("비교 완료: sample/comparison.json에 저장되었습니다.");
}
compare().catch(console.error);