/**
 * ponytail: assert ranger mapper invariants (standalone — CRA ESM can't require()).
 * Keep in sync with src/lib/ranger/{helpers,mapTickers,depth}.js
 * Run: node scripts/check-ranger-mappers.js
 */
const assert = require("assert");

function generateSocketURI(baseUrl, streams) {
  const sorted = [...(streams || []).filter(Boolean)].sort();
  return `${String(baseUrl).replace(/\/+$/, "")}/?stream=${sorted.join("&stream=")}`;
}

function marketIdToShahooStatKeys(marketId) {
  const id = String(marketId || "").toLowerCase();
  const match = id.match(/^([a-z0-9]+?)(cad|irt|usdt)$/);
  if (!match) return [];
  return [`${match[1].toUpperCase()}_${match[2].toUpperCase()}`];
}

function shahooMarketToDenaId(marketKeyOrRoute) {
  const normalized = String(marketKeyOrRoute || "")
    .replace(/-/g, "_")
    .toUpperCase();
  const [base, quote] = normalized.split("_");
  if (!base || !quote) return null;
  return `${base.toLowerCase()}${quote.toLowerCase()}`;
}

function marketPublicStreams(marketId, { incremental = true } = {}) {
  const id = String(marketId || "").toLowerCase();
  if (!id) return [];
  const depth = incremental ? `${id}.ob-inc` : `${id}.update`;
  return [`${id}.trades`, depth];
}

function handleIncrementalUpdate(depthOld, newLevel, type) {
  const prev = depthOld || [];
  const index = prev.findIndex(([price]) => +price === +newLevel[0]);
  if (index === -1 && +newLevel[1]) {
    const data = [...prev, newLevel];
    return type === "asks"
      ? data.sort((a, b) => +a[0] - +b[0])
      : data.sort((a, b) => +b[0] - +a[0]);
  }
  const result = [...prev];
  if (Number(newLevel[1]) !== 0) result[index] = newLevel;
  else result.splice(index, 1);
  return type === "asks"
    ? result.sort((a, b) => +a[0] - +b[0])
    : result.sort((a, b) => +b[0] - +a[0]);
}

assert.deepStrictEqual(marketIdToShahooStatKeys("btcirt"), ["BTC_IRT"]);
assert.strictEqual(shahooMarketToDenaId("BTC-IRT"), "btcirt");
assert.deepStrictEqual(marketPublicStreams("btcirt"), [
  "btcirt.trades",
  "btcirt.ob-inc",
]);
const uri = generateSocketURI("wss://x/public", ["b", "a"]);
assert.ok(uri.endsWith("?stream=a&stream=b"));
assert.deepStrictEqual(
  handleIncrementalUpdate([["100", "1"]], ["100", "0"], "asks"),
  []
);

console.log("check-ranger-mappers: ok");