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:');
}

// ---------- patchProject ----------

test('patchProject：更新 autonomy/concurrency/verifyCmd/model/status', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'pp', repoPath: '/tmp/pp-' + Math.random() });
  assert.equal(p.lastSyncAt, null);

  const updated = s.patchProject(p.id, {
    autonomy: 'auto-easy', concurrency: 3, verifyCmd: 'npm test', model: 'sonnet', status: 'paused',
  });
  assert.equal(updated.autonomy, 'auto-easy');
  assert.equal(updated.concurrency, 3);
  assert.equal(updated.verifyCmd, 'npm test');
  assert.equal(updated.model, 'sonnet');
  assert.equal(updated.status, 'paused');

  // 部分字段更新不影响其余字段；null 清空
  const again = s.patchProject(p.id, { verifyCmd: null, status: 'active' });
  assert.equal(again.verifyCmd, null);
  assert.equal(again.autonomy, 'auto-easy');
  assert.equal(again.status, 'active');
  s.close();
});

test('patchProject：非法值被拒（autonomy/concurrency/status）', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'pv', repoPath: '/tmp/pv-' + Math.random() });
  assert.throws(() => s.patchProject(p.id, { autonomy: 'yolo' as never }), StoreError);
  assert.throws(() => s.patchProject(p.id, { concurrency: 0 }), StoreError);
  assert.throws(() => s.patchProject(p.id, { concurrency: 1.5 }), StoreError);
  assert.throws(() => s.patchProject(p.id, { status: 'stopped' as never }), StoreError);
  assert.throws(() => s.patchProject('prj_nope', { concurrency: 1 }), StoreError);
  s.close();
});

// ---------- patchTask ----------

test('patchTask：title/priority 更新', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'pt', repoPath: '/tmp/pt-' + Math.random() });
  const t = s.createTask({ projectId: p.id, title: '原标题', complexity: 'easy' });
  assert.equal(t.priority, 1);                 // 默认 P1（中）
  const u = s.patchTask(t.id, { title: '新标题', priority: 0 });
  assert.equal(u.title, '新标题');
  assert.equal(u.priority, 0);                 // P0 最高
  assert.equal(u.status, 'ready');             // 未动 complexity 不重置状态
  assert.throws(() => s.patchTask(t.id, { title: '  ' }), StoreError);
  assert.throws(() => s.patchTask(t.id, { priority: 5 }), StoreError);   // 超出 0..2
  assert.throws(() => s.patchTask(t.id, { priority: -1 }), StoreError);
  s.close();
});

test('patchTask：complexity 修改 → status 重置为新初始态 + status.changed 事件', () => {
  const s = freshStore();
  const events: Array<{ type: string; payload: Record<string, unknown> }> = [];
  s.subscribe((e) => events.push({ type: e.type, payload: e.payload }));
  const p = s.createProject({ name: 'pc', repoPath: '/tmp/pc-' + Math.random() });

  // easy(ready) → hard：重置为 analyzing
  const t = s.createTask({ projectId: p.id, title: 'x', complexity: 'easy' });
  const u = s.patchTask(t.id, { complexity: 'hard' });
  assert.equal(u.complexity, 'hard');
  assert.equal(u.status, 'analyzing');
  const sc = events.filter((e) => e.type === 'status.changed').at(-1);
  assert.equal(sc?.payload.from, 'ready');
  assert.equal(sc?.payload.to, 'analyzing');

  // hard(analyzing) → medium：重置为 speccing
  const u2 = s.patchTask(t.id, { complexity: 'medium' });
  assert.equal(u2.status, 'speccing');

  // 同值修改 = no-op，不重置
  s.transition(t.id, 'spec_review');
  const u3 = s.patchTask(t.id, { complexity: 'medium' });
  assert.equal(u3.status, 'spec_review');

  // spec_review 在允许列表内：可改
  const u4 = s.patchTask(t.id, { complexity: 'easy' });
  assert.equal(u4.status, 'ready');
  s.close();
});

test('patchTask：执行链路状态下改 complexity 被拒（StoreError → API 400）', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'pr', repoPath: '/tmp/pr-' + Math.random() });
  const t = s.createTask({ projectId: p.id, title: 'y', complexity: 'easy' }); // ready
  s.transition(t.id, 'queued');
  assert.throws(
    () => s.patchTask(t.id, { complexity: 'hard' }),
    (e: unknown) => e instanceof StoreError && (e as Error).message.includes('不允许修改复杂度'),
  );
  // queued 下 title 仍可改
  assert.equal(s.patchTask(t.id, { title: 'z' }).title, 'z');

  // done（终态）同样拒绝
  s.transition(t.id, 'executing');
  s.transition(t.id, 'exec_review');
  s.decide(t.id, 'accept', 'user');
  assert.throws(() => s.patchTask(t.id, { complexity: 'medium' }), StoreError);
  s.close();
});

// ---------- patchTask：deps 编辑 ----------

test('patchTask：加 dep → ready 落位 blocked；删 dep → 重回 ready', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'pd', repoPath: '/tmp/pd-' + Math.random() });
  const a = s.createTask({ projectId: p.id, title: 'A', complexity: 'easy' }); // ready
  const b = s.createTask({ projectId: p.id, title: 'B', complexity: 'easy' }); // ready，无依赖
  assert.equal(b.status, 'ready');

  // 给 B 加未完成依赖 A → B 应被重算为 blocked
  const b1 = s.patchTask(b.id, { deps: [a.id] });
  assert.deepEqual(b1.deps, [a.id]);
  assert.equal(b1.status, 'blocked');

  // 删除依赖 → 依赖已满足，B 重回 ready
  const b2 = s.patchTask(b.id, { deps: [] });
  assert.deepEqual(b2.deps, []);
  assert.equal(b2.status, 'ready');
  s.close();
});

test('patchTask：补全依赖（dep 已 done）→ blocked 直接放行 ready', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'pd2', repoPath: '/tmp/pd2-' + Math.random() });
  const a = s.createTask({ projectId: p.id, title: 'A', complexity: 'easy' });
  s.forceDone(a.id, 'test');                       // A 直接 done
  const b = s.createTask({ projectId: p.id, title: 'B', complexity: 'easy' }); // ready
  // 即便加的是已完成的依赖，B 仍应保持可执行 ready
  const b1 = s.patchTask(b.id, { deps: [a.id] });
  assert.equal(b1.status, 'ready');
  s.close();
});

test('patchTask：环检测拒绝（A→B→A）', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'pcyc', repoPath: '/tmp/pcyc-' + 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] }); // B→A
  // 让 A 依赖 B 会成环 → 拒绝
  assert.throws(
    () => s.patchTask(a.id, { deps: [b.id] }),
    (e: unknown) => e instanceof StoreError && (e as Error).message.includes('环'),
  );
  // 自依赖也拒绝
  assert.throws(() => s.patchTask(a.id, { deps: [a.id] }), StoreError);
  s.close();
});

test('patchTask：deps 引用不存在/跨项目任务被拒绝', () => {
  const s = freshStore();
  const p1 = s.createProject({ name: 'pj1', repoPath: '/tmp/pj1-' + Math.random() });
  const p2 = s.createProject({ name: 'pj2', repoPath: '/tmp/pj2-' + Math.random() });
  const t = s.createTask({ projectId: p1.id, title: 'T', complexity: 'easy' });
  const other = s.createTask({ projectId: p2.id, title: 'O', complexity: 'easy' });
  assert.throws(() => s.patchTask(t.id, { deps: ['tsk_nope'] }), StoreError);
  assert.throws(() => s.patchTask(t.id, { deps: [other.id] }), StoreError);
  s.close();
});

test('patchTask：执行链路状态（executing/exec_review/done）下改 deps 被拒', () => {
  const s = freshStore();
  const p = s.createProject({ name: 'pdg', repoPath: '/tmp/pdg-' + Math.random() });
  const a = s.createTask({ projectId: p.id, title: 'A', complexity: 'easy' });
  const t = s.createTask({ projectId: p.id, title: 'T', complexity: 'easy' }); // ready

  s.transition(t.id, 'queued');
  s.transition(t.id, 'executing');
  assert.throws(
    () => s.patchTask(t.id, { deps: [a.id] }),
    (e: unknown) => e instanceof StoreError && (e as Error).message.includes('不允许修改依赖'),
  );

  s.transition(t.id, 'exec_review');
  assert.throws(() => s.patchTask(t.id, { deps: [a.id] }), StoreError);

  s.decide(t.id, 'accept', 'user'); // done
  assert.throws(() => s.patchTask(t.id, { deps: [a.id] }), StoreError);
  s.close();
});

test('patchTask：改 deps 广播 status.changed（ready↔blocked 重算）', () => {
  const s = freshStore();
  const events: Array<{ taskId: string | null; type: string; payload: Record<string, unknown> }> = [];
  s.subscribe((e) => events.push({ taskId: e.taskId, type: e.type, payload: e.payload }));
  const p = s.createProject({ name: 'pde', repoPath: '/tmp/pde-' + Math.random() });
  const a = s.createTask({ projectId: p.id, title: 'A', complexity: 'easy' });
  const b = s.createTask({ projectId: p.id, title: 'B', complexity: 'easy' });

  s.patchTask(b.id, { deps: [a.id] });
  const sc = events.filter((e) => e.taskId === b.id && e.type === 'status.changed').at(-1);
  assert.equal(sc?.payload.from, 'ready');
  assert.equal(sc?.payload.to, 'blocked');
  s.close();
});