#!/usr/bin/env bun
/**
 * gstack-plan-reality — the reality rows of a plan review (plan D1).
 *
 *   gstack-plan-reality rows --phase <ceo|eng|dx|design> [--scope <csv>] [--deep] [--json]
 *   gstack-plan-reality check --phase <p> <review-file|-> [--scope <csv>] [--session-kind <kind>] [--plan <reviewed plan>] [--json]
 *
 * Logic: lib/plan-reality.ts. Codes: lib/result-codes.ts (REALITY_ROW_MISSING, REALITY_RECEIPT_MISSING).
 */
import * as fs from 'node:fs';
import { EXIT, exitTableHelp } from '../lib/headless-artifacts';
import { checkRealityRows, parseScopes, REALITY_LINE_SHAPE, REALITY_SCOPES, renderRows, requiredRows } from '../lib/plan-reality';
import { resultLine } from '../lib/result-codes';

const HELP = `gstack-plan-reality — reality rows for plan reviews

  rows --phase <p> [--scope <csv>] [--deep] [--json]      the rows this review must carry (tier 1 always, tier 2 by scope)
  check --phase <p> <file|-> [--scope <csv>] [--session-kind <kind>] [--plan <reviewed plan>] [--json]
                                                          parse the review's REALITY: lines; exit 1 with the missing rows
                                                          --plan: a number inside a "quoted" span copied verbatim from it needs no receipt

Row line: \`${REALITY_LINE_SHAPE}\` (receipt: path:line, path:line-line or a commit sha).
Scopes: ${REALITY_SCOPES.filter(s => s !== 'always').join(', ')}. Session kind unattended → verdict=incomplete; else verdict=repair.
Prints \`PLAN_REALITY: phase=<p> rows=<n>/<m> missing=<ids|none> [unreceipted=<ids>] [unreceipted_numbers=<n>] [unquoted=<n>] [unverified=<n>] verdict=complete|incomplete|repair\`,
then one \`NUMBER_UNRECEIPTED: <clause>\` per measured number (unit or measured/costs/took) without its own receipt.
A line claiming a decision rule must quote it (\`"..."\`, a fenced or > block after it) or link it (file:line).
${exitTableHelp()}`;

function flag(args: string[], name: string): string | undefined {
  const i = args.indexOf(name);
  return i >= 0 ? args[i + 1] : undefined;
}
function usage(message: string): number {
  process.stderr.write(`gstack-plan-reality: ${message}\n${HELP}\n`);
  return EXIT.usage;
}

function main(argv: string[]): number {
  const [cmd, ...rest] = argv;
  if (!cmd || cmd === '--help' || cmd === '-h' || cmd === 'help') { process.stdout.write(HELP + '\n'); return cmd ? EXIT.ok : EXIT.usage; }
  const phase = flag(rest, '--phase');
  if (!phase || !/^[a-z-]+$/.test(phase)) return usage('--phase <ceo|eng|dx|design> is required');
  const { scopes, unknown } = parseScopes(flag(rest, '--scope'));
  if (unknown.length) return usage(`unknown scope ${unknown.join(', ')} (known: ${REALITY_SCOPES.join(', ')})`);
  const json = rest.includes('--json');

  if (cmd === 'rows') {
    const rows = requiredRows(scopes);
    process.stdout.write(json ? JSON.stringify({ phase, scopes, rows }) + '\n' : renderRows(rows, { deep: rest.includes('--deep') }) + '\n');
    return EXIT.ok;
  }
  if (cmd === 'check') {
    const valueFlags = new Set(['--phase', '--scope', '--session-kind', '--plan']);
    const file = rest.find((a, i) => !a.startsWith('--') && !(i > 0 && valueFlags.has(rest[i - 1]!)));
    if (!file) return usage('a review file (or - for stdin) is required');
    let text: string;
    try { text = file === '-' ? fs.readFileSync(0, 'utf8') : fs.readFileSync(file, 'utf8'); } catch (e: any) { process.stderr.write(`gstack-plan-reality: ${file}: ${e.message}\n`); return EXIT.fail; }
    const sessionKind = flag(rest, '--session-kind') ?? process.env.GSTACK_SESSION_KIND;
    const planFile = flag(rest, '--plan');
    let planText: string | undefined;
    try { planText = planFile ? fs.readFileSync(planFile, 'utf8') : undefined; } catch (e: any) { process.stderr.write(`gstack-plan-reality: ${planFile}: ${e.message}\n`); return EXIT.fail; }
    const result = checkRealityRows(text, { phase, scopes, sessionKind, planText });
    if (json) process.stdout.write(JSON.stringify(result) + '\n');
    else process.stdout.write([result.line, ...result.numberLines].join('\n') + '\n');
    for (const id of result.unknownRows) process.stderr.write(`gstack-plan-reality: ${file}: REALITY row ${JSON.stringify(id)} is not a known row; it was ignored\n`);
    if (result.missing.length) process.stderr.write(resultLine('gstack-plan-reality check', 'REALITY_ROW_MISSING', `phase ${phase}: ${result.missing.join(', ')}`) + '\n');
    if (result.unreceipted.length) process.stderr.write(resultLine('gstack-plan-reality check', 'REALITY_RECEIPT_MISSING', `phase ${phase}: ${result.unreceipted.join(', ')}`) + '\n');
    if (result.unreceipted_numbers.length) process.stderr.write(resultLine('gstack-plan-reality check', 'REALITY_RECEIPT_MISSING', `phase ${phase}: ${result.unreceipted_numbers.length} measured number(s) share or lack a receipt; give each clause its own file:line, script path or command`) + '\n');
    for (const claim of result.unquoted) process.stderr.write(resultLine('gstack-plan-reality check', 'REALITY_RECEIPT_MISSING', `phase ${phase}: a decision rule is claimed without its text; quote it or link its file:line: ${claim}`) + '\n');
    return result.verdict === 'complete' ? EXIT.ok : EXIT.fail;
  }
  return usage(`unknown command ${cmd}`);
}

process.exitCode = main(process.argv.slice(2));