#!/usr/bin/env bun
/**
 * gstack-autoplan — the unattended /autoplan runner as an explicit, durable state machine (plan B2).
 *
 *   gstack-autoplan next    --out <dir> [--plan <file>] [--plan-heading <text>] [--ui|--no-ui] [--developer-tool] [--agent-primary]
 *                           [--no-outside] [--light] [--spend-cap <usd>] [--estimate-usd <n>] [--deadline <min>] [--redispatch <attempt>] [--json]
 *   gstack-autoplan submit  --out <dir> --phase <p> --voice native|outside --result <file> --model <id> --attempt <id>
 *                           [--runner <r>] [--usage-usd <n>] [--reconcile <jsonl>] [--json]
 *   gstack-autoplan run     --out <dir> --plan <file> --native-model <id> --outside-model <id> [--runner codex-cli|api] [--native-runner api]
 *                           [--deadline <min>] [--spend-cap <usd>] [--estimate-usd <n>] [--json]      next in a loop; needs runners for both voices
 *   gstack-autoplan answer  --out <dir> --gate-rev <rev> --reply "<grammar>" [--json]
 *   gstack-autoplan resume  --out <dir> [--json]        take ownership; intent without a terminal record becomes EXECUTION_UNKNOWN
 *   gstack-autoplan status  --out <dir> [--json]        query: the manifest, no GSTACK_RESULT line
 *   gstack-autoplan export  --out <dir> [--json]        rewrite plan.md, review-record.md, findings/tasks.jsonl and run.json hashes
 *   gstack-autoplan release --out <dir> --attempt <id>  drop a reservation for an attempt that never ran
 *   gstack-autoplan contract                            print the coordinator contract every lane prompt inherits (plan E2)
 *
 * Logic: lib/autoplan-run.ts (next/submit/resume), lib/autoplan-gate.ts (close, gate, answer),
 * lib/autoplan-export.ts, lib/autoplan-prompts.ts, lib/spend-ledger.ts. Codes: lib/result-codes.ts.
 * Workflow commands end with GSTACK_RESULT: skill=autoplan status=<s> run=<dir>; the run is never approved here.
 */
import * as fs from 'node:fs';
import * as path from 'node:path';
import { answerGate } from '../lib/autoplan-gate';
import { exportRun } from '../lib/autoplan-export';
import { FILES, RunError, initRun, markOutside, nextStep, readState, resumeRun, statusLines, submitResult, withRunLock, writeState } from '../lib/autoplan-run';
import type { Phase } from '../lib/autoplan-prompts';
import { EXIT, exitTableHelp } from '../lib/headless-artifacts';
import { createRunner, familyConflict, type RunnerId } from '../lib/outside-voice-runner';
import { resultLine } from '../lib/result-codes';
import { release } from '../lib/spend-ledger';
import { COORDINATOR_CONTRACT } from '../lib/coordinator-contract';

const HELP = `gstack-autoplan — unattended /autoplan: next/submit loop, answer, resume (docs/unattended.md)

  next    --out <dir> [--plan <file>] [--plan-heading <text>] [--ui|--no-ui] [--developer-tool] [--agent-primary]
          [--no-outside] [--light] [--spend-cap <usd>] [--estimate-usd <n>] [--deadline <min>] [--redispatch <attempt>] [--json]
          --light loads each phase's checklist plus the sections its scope needs (the unattended default); interactive kinds load everything
          prepare the current phase; one ATTEMPT: line per voice; ends awaiting_result
  submit  --out <dir> --phase <p> --voice native|outside --result <file> --model <id> --attempt <id>
          [--runner <r>] [--usage-usd <n>] [--reconcile <jsonl>] [--json]
          bind one reviewer result (receipt, canonical findings, model family) exactly once; closes the phase when both voices are in
  run     --out <dir> --plan <file> --native-model <id> --outside-model <id> [--runner codex-cli|api] [--native-runner api] ...
          next in a loop, only when a runner executes both voices here; --deadline cancels the children it started
  answer  --out <dir> --gate-rev <rev> --reply "<all | d3b uc1a | all except d3b>" [--json]
  resume  --out <dir> [--json]      status  --out <dir> [--json]      export  --out <dir>      release --out <dir> --attempt <id>
  contract                          print lib/coordinator-contract.ts (the block every lane and reviewer prompt inherits word for word)

The first next needs --plan. The native voice is dispatched by the parent from the printed prompt file (a subagent on the
parent's model); the outside voice runs through gstack-outside-voice or a cross-family subagent. Spend by host subagents is unknown.
The first next reads codex_reviews: disabled (or an unreadable config) records every phase's outside voice as a terminal
not_run consent_missing outcome and dispatches none. Enable: gstack-config set codex_reviews enabled.
${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-autoplan: ${message}\n${HELP}\n`);
  return EXIT.usage;
}
function num(args: string[], name: string): number | undefined {
  const v = flag(args, name);
  if (v === undefined) return undefined;
  const n = Number(v);
  if (!Number.isFinite(n) || n < 0) throw new RunError('ARTIFACT_SCHEMA', `${name} needs a non-negative number`, 1);
  return n;
}
const resultLineFor = (status: string, out: string) => `GSTACK_RESULT: skill=autoplan status=${status} run=${out}`;

function emit(json: boolean, lines: string[], payload: Record<string, unknown>): void {
  if (json) process.stdout.write(JSON.stringify(payload) + '\n');
  else process.stdout.write(lines.join('\n') + '\n');
}

function doNext(out: string, rest: string[], json: boolean): number {
  const cwd = process.cwd();
  if (!fs.existsSync(path.join(out, FILES.run))) {
    const plan = flag(rest, '--plan');
    if (!plan) throw new RunError('RUN_NOT_INITIALIZED', `${out} has no run.json; pass --plan <file> on the first next`, 3);
    const ui = rest.includes('--ui') ? true : rest.includes('--no-ui') ? false : undefined;
    initRun({ plan, out, cwd, planHeading: flag(rest, '--plan-heading'), outsideEnabled: !rest.includes('--no-outside'), spendCap: num(rest, '--spend-cap') ?? null,
      deadlineMin: num(rest, '--deadline'), light: rest.includes('--light'), scope: { ui, developerTool: rest.includes('--developer-tool'), agentPrimary: rest.includes('--agent-primary') } });
  }
  const redispatch = rest.flatMap((a, i) => (a === '--redispatch' && rest[i + 1] ? [rest[i + 1]!] : []));
  const r = nextStep({ out, cwd, estimateUsd: num(rest, '--estimate-usd'), redispatch });
  const status = r.state.status;
  const lines = [...r.lines];
  if (status === 'gate_pending') lines.push(`GATE: gate_rev=${r.state.gate_rev} render with: gstack-gate render ${path.join(out, 'gate.json')}`);
  if (status === 'running') lines.push(`NEXT: gstack-autoplan next --out ${out}`);
  lines.push(resultLineFor(status, out));
  emit(json, lines, { run: r.state.run, status, phase: r.phase ?? null, attempts: r.attempts, gate_rev: r.state.gate_rev ?? null, out });
  return EXIT.ok;
}

function doSubmit(out: string, rest: string[], json: boolean): number {
  const phase = flag(rest, '--phase'); const voice = flag(rest, '--voice'); const result = flag(rest, '--result'); const model = flag(rest, '--model'); const attempt = flag(rest, '--attempt');
  if (!phase || !voice || !result || !model || !attempt) return usage('submit needs --phase --voice --result --model --attempt');
  if (voice !== 'native' && voice !== 'outside') return usage('--voice must be native or outside');
  const r = submitResult({ out, phase, voice, result: path.resolve(result), model, attempt, runner: flag(rest, '--runner'), usageUsd: num(rest, '--usage-usd'), reconcile: flag(rest, '--reconcile'), cwd: process.cwd() });
  const status = r.state.status;
  const lines = [...r.lines];
  if (status === 'gate_pending') lines.push(`GATE: gate_rev=${r.state.gate_rev} render with: gstack-gate render ${path.join(out, 'gate.json')}`);
  if (status === 'running') lines.push(`NEXT: gstack-autoplan next --out ${out}`);
  lines.push(resultLineFor(status, out));
  emit(json, lines, { run: r.state.run, status, phase, voice, attempt, closed: r.closed, findings: r.findings, gate_rev: r.state.gate_rev ?? null, out });
  return EXIT.ok;
}

async function doRun(out: string, rest: string[], json: boolean): Promise<number> {
  const nativeModel = flag(rest, '--native-model'); const outsideModel = flag(rest, '--outside-model');
  const outsideRunner = (flag(rest, '--runner') ?? 'codex-cli') as RunnerId; const nativeRunner = (flag(rest, '--native-runner') ?? 'api') as RunnerId;
  if (!nativeModel || !outsideModel) return usage('run needs --native-model and --outside-model (a runner must execute both voices)');
  if (nativeRunner !== 'api') return usage('--native-runner must be api: the only runner that can execute the native voice here');
  if (!['codex-cli', 'api'].includes(outsideRunner)) return usage('--runner must be codex-cli or api for run (host-subagent cannot execute here; use next/submit)');
  const conflict = familyConflict(outsideModel, nativeModel);
  if (conflict) throw new RunError('MODEL_FAMILY_CONFLICT', conflict, 3);
  const deadline = num(rest, '--deadline');
  const deadlineAt = deadline ? Date.now() + deadline * 60_000 : undefined;
  for (let guard = 0; guard < 40; guard++) {
    const code = withRunLock(out, () => doNext(out, rest, true));
    if (code !== EXIT.ok) return code;
    const state = readState(out);
    if (state.status !== 'awaiting_result') { if (!json) process.stdout.write(statusLines(state).join('\n') + '\n'); process.stdout.write(resultLineFor(state.status, out) + '\n'); return EXIT.ok; }
    const phase = state.phase_order.find(p => state.phases[p]?.snapshot && !state.phases[p]?.closed_at)!;
    for (const voice of ['native', 'outside'] as const) {
      const v = state.phases[phase]![voice]!;
      const open = v.attempts?.find(a => a.state === 'dispatched');
      if (!open) continue;
      const runnerId = voice === 'native' ? nativeRunner : outsideRunner;
      const runner = createRunner(runnerId);
      const remaining = deadlineAt ? deadlineAt - Date.now() : 300_000;
      if (remaining <= 0) { withRunLock(out, () => { const s = readState(out); s.status = 'interrupted'; writeState(s); }); process.stdout.write(resultLineFor('interrupted', out) + '\n'); return EXIT.fail; }
      const timer = deadlineAt ? setTimeout(() => runner.cancel(), remaining) : undefined;
      const res = await runner.run({ promptFile: open.prompt, outFile: `${open.result}.raw`, model: voice === 'native' ? nativeModel : outsideModel, timeoutMs: Math.min(remaining, 600_000), cwd: process.cwd(), gate: 'review' });
      if (timer) clearTimeout(timer);
      if (!json) process.stdout.write(`VOICE: ${phase} ${voice} ${res.status} runner=${res.runner} model=${res.model ?? 'unknown'}\n`);
      if (res.status === 'cancelled') { withRunLock(out, () => { const s = readState(out); s.status = 'interrupted'; writeState(s); }); process.stdout.write(resultLineFor('interrupted', out) + '\n'); return EXIT.fail; }
      if (res.status !== 'completed' && res.status !== 'unverified') {
        if (voice === 'outside') { withRunLock(out, () => markOutside(out, phase as Phase, 'unavailable', `${res.runner} ${res.status}${res.detail ? `: ${res.detail}` : ''}`)); continue; }
        process.stderr.write(`gstack-autoplan run: native voice ${res.status}${res.detail ? `: ${res.detail}` : ''}\n`);
        withRunLock(out, () => { const s = readState(out); s.status = 'interrupted'; writeState(s); });
        process.stdout.write(resultLineFor('interrupted', out) + '\n');
        return EXIT.fail;
      }
      withRunLock(out, () => doSubmit(out, ['--phase', phase, '--voice', voice, '--result', `${open.result}.raw`, '--model', res.model ?? (voice === 'native' ? nativeModel : outsideModel), '--attempt', open.attempt, '--runner', res.runner], true));
    }
  }
  return EXIT.fail;
}

async function main(argv: string[]): Promise<number> {
  const [cmd, ...rest] = argv;
  const json = rest.includes('--json');
  if (!cmd || cmd === '--help' || cmd === '-h' || cmd === 'help') { process.stdout.write(HELP + '\n'); return cmd ? EXIT.ok : EXIT.usage; }
  if (cmd === 'contract') { process.stdout.write(COORDINATOR_CONTRACT + '\n'); return EXIT.ok; }
  const outFlag = flag(rest, '--out');
  if (!outFlag) return usage(`${cmd} needs --out <dir>`);
  const out = path.resolve(outFlag);
  try {
    if (cmd === 'next') return withRunLock(out, () => doNext(out, rest, json));
    if (cmd === 'submit') return withRunLock(out, () => doSubmit(out, rest, json));
    if (cmd === 'run') return await doRun(out, rest, json);
    if (cmd === 'status') {
      const state = readState(out);
      if (json) process.stdout.write(JSON.stringify(state) + '\n'); else process.stdout.write(statusLines(state).join('\n') + '\n');
      return EXIT.ok;
    }
    if (cmd === 'resume') {
      return withRunLock(out, () => {
        const r = resumeRun(out);
        const lines = [...r.lines, resultLineFor(r.state.status, out)];
        emit(json, lines, { run: r.state.run, status: r.state.status, execution_unknown: r.unknown, rebound: r.rebound, out });
        return EXIT.ok;
      }, { steal: true });
    }
    if (cmd === 'answer') {
      const rev = flag(rest, '--gate-rev'); const reply = flag(rest, '--reply');
      if (reply === undefined) return usage('answer needs --reply "<text>"');
      if (rev === undefined) { const s = readState(out); process.stderr.write(resultLine('gstack-autoplan answer', 'GATE_REV_STALE', `no --gate-rev given; current gate_rev=${s.gate_rev ?? 0}`) + '\n'); return EXIT.refused; }
      return withRunLock(out, () => {
        const state = readState(out);
        const r = answerGate(state, Number(rev), reply);
        writeState(state);
        const lines = [...r.lines];
        if (r.outcome === 'reopened') lines.push(`NEXT: gstack-autoplan next --out ${out}`);
        lines.push(resultLineFor(state.status, out));
        emit(json, lines, { run: state.run, status: state.status, outcome: r.outcome, pending: r.pending, reopened: r.reopened, gate_rev: state.gate_rev, out });
        return EXIT.ok;
      });
    }
    if (cmd === 'export') {
      return withRunLock(out, () => {
        const state = readState(out);
        const r = exportRun(state);
        writeState(state);
        for (const w of r.warnings) process.stderr.write(`gstack-autoplan export: ${w}\n`);
        emit(json, r.files.map(f => `EXPORTED: ${f}`), { run: state.run, files: r.files, warnings: r.warnings });
        return EXIT.ok;
      });
    }
    if (cmd === 'release') {
      const attempt = flag(rest, '--attempt');
      if (!attempt) return usage('release needs --attempt <id>');
      const ledger = release(path.join(out, FILES.spend), attempt);
      process.stdout.write(`RELEASED: ${attempt} reserved=${ledger.reserved.length}\n`);
      return EXIT.ok;
    }
    return usage(`unknown command ${cmd}`);
  } catch (e: any) {
    if (e instanceof RunError) {
      process.stderr.write(resultLine(`gstack-autoplan ${cmd}`, e.code, e.detail) + '\n');
      if (['next', 'submit', 'answer', 'resume', 'run'].includes(cmd)) process.stdout.write(resultLineFor('refused', out) + '\n');
      return e.exit === 3 ? EXIT.refused : EXIT.fail;
    }
    process.stderr.write(`gstack-autoplan ${cmd}: ${e?.message ?? e}\n`);
    return EXIT.fail;
  }
}

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