/**
 * Worker config. Loaded from `.env.local` (gitignored) with safe defaults so the
 * loop runs out-of-the-box in dry-run *paper* mode even with zero configuration.
 *
 * Everything here is intentionally paper-only: this process never signs or sends a
 * real order. Live execution is the genuinely-risky 20% we deliberately skip — the
 * `mode` is fixed to 'dry-run' so the credibility comes from an honest, verifiable
 * paper track record, not from putting an LLM/agent in the money-losing path.
 */

// Node 21+ — load .env.local into process.env without any dependency.
try {
  process.loadEnvFile('.env.local')
} catch {
  /* no .env.local — fall back to real env / defaults */
}

const num = (v: string | undefined, d: number) =>
  v != null && v !== '' && isFinite(+v) ? +v : d

const list = (v: string | undefined, d: string[]) =>
  v ? v.split(',').map((s) => s.trim()).filter(Boolean) : d

export const CONFIG = {
  // ── universe / cadence
  coins: list(process.env.QUANT_COINS, ['BTC', 'ETH', 'SOL']),
  interval: process.env.QUANT_INTERVAL ?? '1h',
  lookback: num(process.env.QUANT_LOOKBACK, 120),
  pollMs: num(process.env.QUANT_POLL_MS, 60_000),

  // ── paper trading
  equityStart: num(process.env.QUANT_EQUITY_START, 10_000),
  leverage: num(process.env.QUANT_LEVERAGE, 5),
  confFloor: num(process.env.QUANT_CONF_FLOOR, 0.55),
  maxOpenPerCoin: num(process.env.QUANT_MAX_OPEN_PER_COIN, 1),

  // ── telegram (optional — worker logs to stdout if unset)
  tgToken: process.env.TELEGRAM_BOT_TOKEN ?? '',
  tgChat: process.env.TELEGRAM_CHAT_ID ?? '',

  // ── execution mode — paper only. 'live' is intentionally not implemented.
  mode: 'dry-run' as const,

  // ── persistence
  dataFile: process.env.QUANT_DATA_FILE ?? 'worker/data/state.json',
}

export type Config = typeof CONFIG