import test from 'node:test';
import assert from 'node:assert/strict';
import { mkdtempSync, rmSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { join } from 'node:path';
import { Store } from '../src/store.mjs';
import { Broker } from '../src/broker.mjs';
const businesses = {
  demo: {
    id: 'demo',
    human: 'jason',
    arbiters: { technical: 'cto', delivery: 'pm' },
    roles: {
      coder: { authority: { withinRole: ['message.send'], crossRole: ['task.scope.change'] } },
      cto: { authority: { withinRole: [], crossRole: [] } },
      pm: { authority: { withinRole: [], crossRole: [] } },
    },
  },
};
function fixture(t, gatedMessages = false) {
  const root = mkdtempSync(join(tmpdir(), 'bus-once-'));
  let store, b, cap, human;
  const policy = structuredClone(businesses);
  if (gatedMessages) policy.demo.roles.coder.authority.withinRole = [];
  const call = (c, verb, args = {}) => b.request(c, { verb, args });
  const bind = (run) => b.bindLaunch({ business: 'demo', role: 'coder', run, harness: 'pi', address: run });
  function open() {
    store = new Store(root);
    b = new Broker({ store, businesses: policy });
    cap = bind('run1');
    human = b.bindHuman({ business: 'demo', human: 'jason', via: 'cli', outsideAgent: true });
  }
  open();
  call(cap, 'role.claim');
  t.after(() => {
    store.close();
    rmSync(root, { recursive: true, force: true });
  });
  function approve(action = 'deploy', domain = 'delivery', target = 'release1') {
    const d = call(cap, 'decision.raise', {
      action,
      domain,
      target,
      question: 'Allow?',
      options: [
        { key: 'yes', text: 'Yes' },
        { key: 'no', text: 'No' },
      ],
      recommendation: 'no',
      blocking: false,
    });
    if (d.route_to === 'human') call(human, 'decision.resolve', { id: d.id, choice: 'yes' });
    else {
      const c = b.bindLaunch({ business: 'demo', role: 'cto', run: 'cto1', harness: 'pi', address: 'cto1' });
      call(c, 'role.claim');
      call(c, 'decision.resolve', { id: d.id, choice: 'yes' });
    }
    return d;
  }
  return {
    get b() {
      return b;
    },
    get store() {
      return store;
    },
    get cap() {
      return cap;
    },
    call,
    bind,
    approve,
    use(d, c = cap) {
      return b.authorize(c, d.action, { decision: d.id, target: d.authorization.target });
    },
    setPolicy(withinRole, crossRole) {
      policy.demo.roles.coder.authority = { withinRole, crossRole };
    },
    narrowToCross(action) {
      policy.demo.roles.coder.authority.crossRole.push(action);
    },
    reopen() {
      store.close();
      open();
    },
    count(d) {
      return store.get(
        "SELECT count(*) AS n FROM events WHERE kind='action.allowed' AND json_extract(body,'$.decision')=? AND json_extract(body,'$.operation') IS NOT 'decision.raise'",
        d.id,
      ).n;
    },
  };
}
test('gated approval authorizes once, survives store reopen, and fresh approval works', (t) => {
  const f = fixture(t),
    d = f.approve();
  assert.equal(f.use(d).class, 'gated');
  assert.equal(f.count(d), 1);
  assert.throws(() => f.use(d), /decision-consumed/);
  assert.equal(f.count(d), 1);
  f.reopen();
  assert.throws(() => f.use(d), /decision-consumed/);
  const fresh = f.approve();
  f.use(fresh);
  assert.equal(f.count(fresh), 1);
});
test('another run cannot consume an approval; a failed check leaves it usable', (t) => {
  const f = fixture(t),
    d = f.approve(),
    other = f.bind('run2');
  f.call(f.cap, 'role.release');
  f.call(other, 'role.claim');
  assert.throws(() => f.use(d, other), /decision-mismatch/);
  assert.equal(f.count(d), 0);
  f.call(other, 'role.release');
  f.call(f.cap, 'role.claim');
  assert.throws(
    () => f.b.authorize(f.cap, 'deploy', { decision: d.id, target: 'other' }),
    /decision-mismatch/,
  );
  f.use(d);
  assert.equal(f.count(d), 1);
});
test('two scheduled callers have exactly one grant and one consumed refusal', async (t) => {
  const f = fixture(t),
    d = f.approve();
  const results = await Promise.allSettled([
    Promise.resolve().then(() => f.use(d)),
    Promise.resolve().then(() => f.use(d)),
  ]);
  assert.equal(results.filter((r) => r.status === 'fulfilled').length, 1);
  assert.equal(results.find((r) => r.status === 'rejected').reason.code, 'decision-consumed');
  assert.equal(f.count(d), 1);
});
test('failed commit rolls consumption back; cross-role consumes and within-role stays reusable', (t) => {
  const f = fixture(t),
    d = f.approve(),
    transaction = f.store.transaction.bind(f.store);
  f.store.transaction = (fn) =>
    transaction(() => {
      fn();
      throw Error('fixture rollback');
    });
  assert.throws(() => f.use(d), /fixture rollback/);
  f.store.transaction = transaction;
  assert.equal(f.count(d), 0);
  f.use(d);
  const cross = f.approve('task.scope.change', 'technical');
  f.use(cross);
  assert.throws(() => f.use(cross), /decision-consumed/);
  f.reopen();
  assert.throws(() => f.use(cross), /decision-consumed/);
  assert.equal(f.count(cross), 1);
  for (let n = 0; n < 2; n++) assert.equal(f.b.authorize(f.cap, 'message.send').class, 'within-role');
  const within = f.call(f.cap, 'decision.raise', {
    action: 'message.send',
    question: 'Send?',
    options: [
      { key: 'yes', text: 'Yes' },
      { key: 'no', text: 'No' },
    ],
    recommendation: 'yes',
    choice: 'yes',
    blocking: false,
  });
  assert.equal(within.route_to, 'coder');
  f.use(within);
  assert.throws(() => f.use(within), /decision-consumed/);
  assert.equal(f.count(within), 1);
});

for (const [from, to] of [
  ['gated', 'cross-role'],
  ['cross-role', 'gated'],
  ['gated', 'within-role'],
  ['cross-role', 'within-role'],
  ['within-role', 'gated'],
  ['within-role', 'cross-role'],
]) {
  test(`class drift ${from} to ${to} refuses before consumption`, (t) => {
    const f = fixture(t),
      action = 'task.priority.change';
    f.setPolicy(from === 'within-role' ? [action] : [], from === 'cross-role' ? [action] : []);
    f.reopen();
    let d;
    if (from === 'within-role')
      d = f.call(f.cap, 'decision.raise', {
        action,
        target: 'release1',
        question: 'Allow?',
        options: [
          { key: 'yes', text: 'Yes' },
          { key: 'no', text: 'No' },
        ],
        recommendation: 'yes',
        choice: 'yes',
        blocking: false,
      });
    else d = f.approve(action, 'technical');
    f.setPolicy(to === 'within-role' ? [action] : [], to === 'cross-role' ? [action] : []);
    f.reopen();
    assert.throws(() => f.use(d), /decision-mismatch/);
    assert.equal(f.count(d), 0);
  });
}
test('message.send consumes approval and prevents a later send or authorize', (t) => {
  const f = fixture(t, true),
    d = f.approve('message.send', 'delivery', 'pm');
  // Invalid effect must roll the consumption insert back with the message.
  assert.throws(() => f.call(f.cap, 'message.send', { to: 'pm', body: '', decision: d.id }), /invalid/);
  assert.equal(f.count(d), 0);
  f.call(f.cap, 'message.send', { to: 'pm', body: 'once', decision: d.id });
  assert.equal(f.count(d), 1);
  assert.throws(
    () => f.call(f.cap, 'message.send', { to: 'pm', body: 'twice', decision: d.id }),
    /decision-consumed/,
  );
  assert.throws(() => f.use(d), /decision-consumed/);
  assert.equal(f.store.get('SELECT count(*) AS n FROM messages').n, 1);
  const fresh = f.approve('message.send', 'delivery', 'pm');
  f.use(fresh);
  assert.throws(
    () => f.call(f.cap, 'message.send', { to: 'pm', body: 'after authorize', decision: fresh.id }),
    /decision-consumed/,
  );
});
test('role.revoke consumes approval and prevents a later revoke or authorize', (t) => {
  const f = fixture(t),
    pm = f.b.bindLaunch({ business: 'demo', role: 'pm', run: 'pm1', harness: 'pi', address: 'pm1' });
  f.call(pm, 'role.claim');
  const d = f.approve('role.revoke', 'delivery', 'pm');
  f.call(f.cap, 'role.revoke', { role: 'pm', decision: d.id });
  assert.equal(f.count(d), 1);
  assert.throws(() => f.call(f.cap, 'role.revoke', { role: 'pm', decision: d.id }), /decision-consumed/);
  assert.throws(() => f.use(d), /decision-consumed/);
  assert.equal(f.store.get("SELECT count(*) AS n FROM role_claims WHERE op='revoke'").n, 1);
  const next = f.b.bindLaunch({ business: 'demo', role: 'pm', run: 'pm2', harness: 'pi', address: 'pm2' });
  f.call(next, 'role.claim');
  const fresh = f.approve('role.revoke', 'delivery', 'pm');
  f.use(fresh);
  assert.throws(() => f.call(f.cap, 'role.revoke', { role: 'pm', decision: fresh.id }), /decision-consumed/);
});