import { createReadStream, createWriteStream } from "node:fs";
import { createInterface } from "node:readline";
import { fileURLToPath } from "node:url";
import path from "node:path";
import { normalizeDoc } from "./list-normalize.mjs";

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const projectRoot = path.join(__dirname, "..");
const inputPath = path.join(projectRoot, "assets", "tv-ideas.original.jsonl");
const outputPath = path.join(projectRoot, "assets", "tv-ideas.normalize.jsonl");

const rl = createInterface({
  input: createReadStream(inputPath, "utf8"),
  crlfDelay: Infinity,
});
const out = createWriteStream(outputPath, "utf8");

let total = 0;
let kept = 0;
let dropped = 0;
const symbolCounts = new Map();

for await (const line of rl) {
  const trimmed = line.trim();
  if (!trimmed) continue;

  let doc;
  try {
    doc = JSON.parse(trimmed);
  } catch {
    continue;
  }
  total++;

  const normalized = normalizeDoc(doc);
  if (normalized === null) {
    dropped++;
    continue;
  }

  kept++;
  symbolCounts.set(
    normalized.symbol,
    (symbolCounts.get(normalized.symbol) ?? 0) + 1
  );
  out.write(JSON.stringify(normalized) + "\n");
}

await new Promise((resolve) => out.end(resolve));

const sorted = [...symbolCounts.entries()].sort(
  (a, b) => b[1] - a[1] || a[0].localeCompare(b[0])
);

console.log(`Входных документов:     ${total}`);
console.log(`Оставлено (крипта):     ${kept}`);
console.log(`Удалено (не крипта):    ${dropped}`);
console.log(`Уникальных символов:    ${symbolCounts.size}`);
console.log(`Записано в:             ${path.relative(projectRoot, outputPath)}`);
console.log("");
console.log("Символ                Кол-во");
console.log("----------------------------");
for (const [symbol, count] of sorted) {
  console.log(`${symbol.padEnd(20)}  ${count}`);
}