import { initNDK } from "./ndk.js";
import {
  fetchWalletData,
  fetchTokenEvents,
  fetchHistoryEvents,
  fetchNutzapEvents,
  fetchNutzapRedemptions,
  buildTransactionHistory,
} from "./events.js";
import { formatCSV } from "./csv.js";

function usage(): never {
  console.error(`Usage: NOSTR_SECRET_KEY=<hex|nsec> bun run src/index.ts [--mints <url1,url2,...>]

Options:
  --mints    Comma-separated list of additional mint URLs to include

Environment:
  NOSTR_SECRET_KEY   Required. Nostr private key in hex or nsec format.`);
  process.exit(1);
}

async function main() {
  const secretKey = process.env.NOSTR_SECRET_KEY;
  if (!secretKey) {
    console.error("Error: NOSTR_SECRET_KEY environment variable is required");
    usage();
  }

  // Parse --mints flag
  const args = process.argv.slice(2);
  const mintsIdx = args.indexOf("--mints");
  const extraMints =
    mintsIdx !== -1 && args[mintsIdx + 1]
      ? args[mintsIdx + 1].split(",").filter(Boolean)
      : [];

  // Initialize NDK (don't pass mints as relays — they use different protocols)
  const { ndk, signer, user } = await initNDK(secretKey);

  // Fetch wallet data first (need mints for context)
  const walletData = await fetchWalletData(ndk, user, signer);
  const allMints = [...new Set([...walletData.mints, ...extraMints])];
  if (allMints.length > 0) {
    console.error(`Discovered mints: ${allMints.join(", ")}`);
  }

  // Fetch all events in parallel
  const [tokens, history, nutzaps, redemptions] = await Promise.all([
    fetchTokenEvents(ndk, user, signer),
    fetchHistoryEvents(ndk, user, signer),
    fetchNutzapEvents(ndk, user),
    fetchNutzapRedemptions(ndk, user, signer),
  ]);

  // Build unified transaction history
  const records = buildTransactionHistory(
    walletData,
    tokens,
    history,
    nutzaps,
    redemptions
  );

  console.error(`Total transactions: ${records.length}`);

  // Output CSV to stdout
  const csv = formatCSV(records);
  process.stdout.write(csv + "\n");

  // Clean shutdown
  // NDK doesn't have a disconnect method that returns a promise reliably,
  // so we just exit after output
  process.exit(0);
}

// Handle SIGINT
process.on("SIGINT", () => {
  console.error("\nInterrupted.");
  process.exit(1);
});

main().catch((err) => {
  console.error(`Error: ${err instanceof Error ? err.message : err}`);
  process.exit(1);
});