import { test } from 'node:test';
import assert from 'node:assert/strict';
import { Store, StoreError } from '../src/store/index.js';

function freshStore(): Store {
  return new Store(':memory:');
}

test('project + task creation, complexity routes initial status', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'demo', repoPath: '/tmp/demo-' + Math.random() });
  assert.equal(p.status, 'active');

  const hard = s.createTask({ projectId: p.id, title: 'big', complexity: 'hard' });
  const medium = s.createTask({ projectId: p.id, title: 'mid', complexity: 'medium' });
  const easy = s.createTask({ projectId: p.id, title: 'small', complexity: 'easy' });
  assert.equal(hard.status, 'analyzing');   // Hard 强制分析
  assert.equal(medium.status, 'speccing');  // Medium 写方案
  assert.equal(easy.status, 'ready');       // Easy 直接可执行
  s.close();
});

test('Easy 路径：写操作 → ready → nextExecutable 领取', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'e', repoPath: '/tmp/e-' + Math.random() });
  const t = s.createTask({ projectId: p.id, title: 'tweak', complexity: 'easy' });
  s.setOperations(t.id, '改 README 一行');
  const next = s.nextExecutable(p.id);
  assert.equal(next?.id, t.id);
  s.close();
});

test('Medium 闸：spec_review accept → ready；reject 必带意见', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'm', repoPath: '/tmp/m-' + Math.random() });
  const t = s.createTask({ projectId: p.id, title: 'feat', complexity: 'medium' });
  s.setSpec(t.id, '加一个接口，因为前端需要');
  const inReview = s.transition(t.id, 'spec_review');
  assert.equal(inReview.status, 'spec_review');

  // reject 无意见 → 报错
  assert.throws(() => s.decide(t.id, 'reject', 'user'), StoreError);
  // reject 带意见 → 回到 speccing
  const back = s.decide(t.id, 'reject', 'user', '方案漏了鉴权');
  assert.equal(back.status, 'speccing');
  assert.equal(back.approvals.at(-1)?.reason, '方案漏了鉴权');

  // 重新评审 → accept → ready
  s.transition(t.id, 'spec_review');
  const ok = s.decide(t.id, 'accept', 'user');
  assert.equal(ok.status, 'ready');
  s.close();
});

test('Hard 闸：plan_review accept → decomposed，子任务汇总', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'h', repoPath: '/tmp/h-' + Math.random() });
  const t = s.createTask({ projectId: p.id, title: 'epic', complexity: 'hard' });
  s.setPlan(t.id, '分析…拆 2 个子任务');
  s.transition(t.id, 'plan_review');
  const decomposed = s.decide(t.id, 'accept', 'user');
  assert.equal(decomposed.status, 'decomposed');

  const c1 = s.createTask({ projectId: p.id, parentId: t.id, title: '子1', complexity: 'easy' });
  assert.equal(c1.depth, 2);
  // 拆解后容器不应被 nextExecutable 领取（它有子任务且非 ready）
  s.setOperations(c1.id, '做子1');
  const next = s.nextExecutable(p.id);
  assert.equal(next?.id, c1.id);            // 取到叶子，不是容器
  s.close();
});

test('层级上限：medium 默认 3 层，第 4 层拒绝', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'd', repoPath: '/tmp/d-' + Math.random() });
  const l1 = s.createTask({ projectId: p.id, title: 'l1', complexity: 'medium' });
  const l2 = s.createTask({ projectId: p.id, parentId: l1.id, title: 'l2', complexity: 'medium' });
  const l3 = s.createTask({ projectId: p.id, parentId: l2.id, title: 'l3', complexity: 'medium' });
  assert.equal(l3.depth, 3);
  assert.throws(() => s.createTask({ projectId: p.id, parentId: l3.id, title: 'l4', complexity: 'medium' }), StoreError);
  s.close();
});

test('非法状态流转被守卫拒绝', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'g', repoPath: '/tmp/g-' + Math.random() });
  const t = s.createTask({ projectId: p.id, title: 'x', complexity: 'easy' }); // ready
  assert.throws(() => s.transition(t.id, 'done'), StoreError); // ready→done 非法
  s.close();
});

test('exec_review 结果闸：accept → done', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'x', repoPath: '/tmp/x-' + Math.random() });
  const t = s.createTask({ projectId: p.id, title: 'run', complexity: 'easy' });
  s.setOperations(t.id, 'op');
  s.transition(t.id, 'queued');
  s.transition(t.id, 'executing');
  s.setResult(t.id, { branch: 'maestro/run', worktree: '/wt', diffSummary: '+1 -0', commits: ['abc'], prUrl: null, summary: null, verdict: null });
  s.transition(t.id, 'exec_review');
  const done = s.decide(t.id, 'accept', 'user');
  assert.equal(done.status, 'done');
  s.close();
});

test('依赖未满足时不可领取', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'dep', repoPath: '/tmp/dep-' + Math.random() });
  const a = s.createTask({ projectId: p.id, title: 'A', complexity: 'easy' });
  const b = s.createTask({ projectId: p.id, title: 'B', complexity: 'easy', deps: [a.id] });
  s.setOperations(a.id, 'a'); s.setOperations(b.id, 'b');
  // 优先级相同时 A 先建，但 B 依赖 A 未 done → 只能取到 A
  const next = s.nextExecutable(p.id);
  assert.equal(next?.id, a.id);
  s.close();
});

test('事件订阅：状态变更广播', () => {
  const s = freshStore();
  const got: string[] = [];
  s.subscribe((e) => got.push(e.type));
  const p = s.createProject({ name: 'ev', repoPath: '/tmp/ev-' + Math.random() });
  const t = s.createTask({ projectId: p.id, title: 't', complexity: 'easy' });
  s.transition(t.id, 'queued');
  assert.ok(got.includes('task.created'));
  assert.ok(got.includes('status.changed'));
  s.close();
});

test('依赖自动落位：建任务带未完成依赖 → blocked；依赖 done → 自动放行 ready', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'ab', repoPath: '/tmp/ab-' + Math.random() });
  const a = s.createTask({ projectId: p.id, title: 'A', complexity: 'easy' });
  const b = s.createTask({ projectId: p.id, title: 'B', complexity: 'easy', deps: [a.id] });
  assert.equal(b.status, 'blocked');                  // 建即落位 blocked，而非假 ready

  // 手动把 blocked 拉成 ready 也会被按依赖弹回（仍 blocked）
  assert.equal(s.transition(b.id, 'ready').status, 'blocked');

  // A 走完整闭环到 done → B 自动放行
  const evts = [];
  s.subscribe((e) => evts.push(e));
  s.transition(a.id, 'queued');
  s.transition(a.id, 'executing');
  s.transition(a.id, 'exec_review');
  s.decide(a.id, 'accept', 'user');
  assert.equal(s.getTask(b.id).status, 'ready');      // 自动 blocked→ready
  const auto = evts.find((e) => e.taskId === b.id && e.payload.auto === 'deps-met');
  assert.ok(auto, '应有 deps-met 自动放行事件');
  s.close();
});

test('reconcileDeps：存量 ready 但依赖未满足 → 纠正为 blocked（幂等）', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'rc', repoPath: '/tmp/rc-' + Math.random() });
  const a = s.createTask({ projectId: p.id, title: 'A', complexity: 'easy' });
  const b = s.createTask({ projectId: p.id, title: 'B', complexity: 'easy', deps: [a.id] });
  // 模拟旧库脏数据：B 被直接写成 ready
  s.db.prepare(`UPDATE tasks SET status = 'ready' WHERE id = ?`).run(b.id);
  const r1 = s.reconcileDeps(p.id);
  assert.equal(r1.blocked, 1);
  assert.equal(s.getTask(b.id).status, 'blocked');
  const r2 = s.reconcileDeps(p.id);                   // 幂等
  assert.equal(r2.blocked + r2.released, 0);
  s.close();
});

test('score 调度：解锁加权 > 链条惯性 > 自身分；nextExecutable 取最高分', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'sc', repoPath: '/tmp/sc-' + Math.random() });
  // A：P1 无依赖，但有两条 P0 blocked 任务等它 → score = 2 + 3 + 3 = 8
  const a = s.createTask({ projectId: p.id, title: 'A', complexity: 'easy', priority: 1 });
  s.createTask({ projectId: p.id, title: 'W1', complexity: 'easy', priority: 0, deps: [a.id] });
  s.createTask({ projectId: p.id, title: 'W2', complexity: 'easy', priority: 0, deps: [a.id] });
  // B：P0 无依赖无人等 → score = 3
  s.createTask({ projectId: p.id, title: 'B', complexity: 'easy', priority: 0 });
  const next = s.nextExecutable(p.id);
  assert.equal(next?.title, 'A');             // 解锁两条 P0 的 A(8) 压过孤立 P0 的 B(3)
  s.close();
});

test('createTask：deps 引用不存在/跨项目任务被拒绝', () => {
  const s = freshStore();
  const p1 = s.createProject({ name: 'd1', repoPath: '/tmp/d1-' + Math.random() });
  const p2 = s.createProject({ name: 'd2', repoPath: '/tmp/d2-' + Math.random() });
  const other = s.createTask({ projectId: p2.id, title: 'x', complexity: 'easy' });
  assert.throws(() => s.createTask({ projectId: p1.id, title: 'bad', complexity: 'easy', deps: ['tsk_nope'] }), StoreError);
  assert.throws(() => s.createTask({ projectId: p1.id, title: 'bad2', complexity: 'easy', deps: [other.id] }), StoreError);
  s.close();
});

test('容器收口：已拆解 Hard 的子任务全 done → 容器自动 done（逐级向上）', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'cc', repoPath: '/tmp/cc-' + Math.random() });
  const root = s.createTask({ projectId: p.id, title: 'epic', complexity: 'hard' });
  s.setPlan(root.id, '拆 2 子');
  s.transition(root.id, 'plan_review');
  s.decide(root.id, 'accept', 'user');              // decomposed
  const c1 = s.createTask({ projectId: p.id, parentId: root.id, title: '子1', complexity: 'easy' });
  const c2 = s.createTask({ projectId: p.id, parentId: root.id, title: '子2', complexity: 'easy' });
  const finish = (tid) => {
    s.transition(tid, 'queued'); s.transition(tid, 'executing');
    s.transition(tid, 'exec_review'); s.decide(tid, 'accept', 'user');
  };
  finish(c1.id);
  assert.equal(s.getTask(root.id).status, 'decomposed');   // 还有子没完，容器不动
  finish(c2.id);
  assert.equal(s.getTask(root.id).status, 'done');         // 子全 done → 容器自动 done
  s.close();
});