// services/callTest/parseArgs.js

import { isStoreNumberToken, normalizeE164 } from './config.js';

/**
 * Parse /calltest args into a command descriptor.
 * @returns {{ kind: 'usage'|'status'|'store'|'dial', storeNum?: string, dial?: string, dialOverride?: string|null, testId?: string }}
 */
export function parseCallTestArgs(args = []) {
  const tokens = (args || []).map((a) => String(a).trim()).filter(Boolean);
  if (!tokens.length) return { kind: 'usage' };

  const first = tokens[0].toLowerCase();

  if (first === 'status') {
    const testId = tokens[1];
    return testId ? { kind: 'status', testId } : { kind: 'usage' };
  }

  if (first === 'store') {
    const storeNum = tokens[1];
    if (!storeNum || !isStoreNumberToken(storeNum)) return { kind: 'usage' };
    const override = tokens[2] ? normalizeE164(tokens[2]) : null;
    if (tokens[2] && !override) return { kind: 'usage' };
    return { kind: 'store', storeNum, dialOverride: override };
  }

  if (first === 'dial') {
    const dial = normalizeE164(tokens[1]);
    return dial ? { kind: 'dial', dial } : { kind: 'usage' };
  }

  if (isStoreNumberToken(first)) {
    const override = tokens[1] ? normalizeE164(tokens[1]) : null;
    if (tokens[1] && !override) return { kind: 'usage' };
    return { kind: 'store', storeNum: first, dialOverride: override };
  }

  const dial = normalizeE164(first);
  if (dial) return { kind: 'dial', dial };

  return { kind: 'usage' };
}