/**
 * MemoryConsolidator 测试（v0.7.2 覆盖补齐 —— 此前零测试）
 *
 * 锁定会话结束记忆固化的核心契约：
 * 1. LLM 提取 JSON → 白名单 section 过滤 → MEMORY.md 追加 + semantic_memories 双轨写入
 * 2. 边界：markdown 代码围栏剥离 / section 白名单 / 单次最多 5 条 / 单条 500 截断
 * 3. 失败语义：LLM 抛错 / 非 JSON / 空响应 → 静默降级，不冒泡
 * 4. 退出等待：isRunning / waitForCompletion（v0.3.18 修复的回归防线）
 * 5. section → importance 分级映射
 */

import { describe, it, expect, vi, beforeEach } from 'vitest';

vi.mock('electron-log', () => ({
  default: { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
}));

import { MemoryConsolidator } from '../consolidator';
import type { IMetonaProviderAdapter, MetonaRequest } from '../../types';
import type { WorkspaceService } from '../../../services/workspace.service';
import type { MemoryManager } from '../manager';

function makeAdapter(responseContent: string | Error): {
  adapter: IMetonaProviderAdapter;
  send: ReturnType<typeof vi.fn>;
} {
  const send = vi.fn(async (): Promise<{ content: string }> => {
    if (responseContent instanceof Error) throw responseContent;
    return { content: responseContent };
  });
  return {
    adapter: {
      providerId: 'mock',
      supportedModels: [],
      supportsToolCalling: true,
      supportsThinking: false,
      getContextWindow: () => 1_000_000,
      send: send as unknown as IMetonaProviderAdapter['send'],
      sendStream: vi.fn(),
    } as unknown as IMetonaProviderAdapter,
    send,
  };
}

function makeDeps(memory?: string): {
  workspace: WorkspaceService;
  appendMemory: ReturnType<typeof vi.fn>;
  manager: MemoryManager;
  store: ReturnType<typeof vi.fn>;
} {
  const appendMemory = vi.fn();
  const store = vi.fn();
  return {
    workspace: {
      getFiles: vi.fn(() => ({ soul: '', memory: memory ?? '' })),
      appendMemory,
    } as unknown as WorkspaceService,
    appendMemory,
    manager: { store } as unknown as MemoryManager,
    store,
  };
}

beforeEach(() => {
  vi.clearAllMocks();
});

describe('MemoryConsolidator — 正常固化路径', () => {
  it('提取结果追加到 MEMORY.md + 双轨写入 semantic_memories', async () => {
    const { adapter } = makeAdapter(
      JSON.stringify([{ section: '用户偏好', entry: '偏好深色主题' }]),
    );
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    consolidator.setMemoryManager(deps.manager);

    const result = await consolidator.consolidate('用户消息', '最终回答', []);

    expect(result.appended).toBe(1);
    expect(deps.appendMemory).toHaveBeenCalledWith('用户偏好', '偏好深色主题');
    // 双轨：importance 按 section 分级（用户偏好 → 0.9）
    expect(deps.store).toHaveBeenCalledWith(
      expect.objectContaining({ type: 'semantic', importance: 0.9, content: '偏好深色主题' }),
    );
  });

  it('markdown 代码围栏包裹的 JSON 正常剥离解析', async () => {
    const { adapter } = makeAdapter('```json\n[{"section":"重要决策","entry":"采用 SQLite"}]\n```');
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    consolidator.setMemoryManager(deps.manager);

    const result = await consolidator.consolidate('q', 'a', []);
    expect(result.appended).toBe(1);
    expect(deps.appendMemory).toHaveBeenCalledWith('重要决策', '采用 SQLite');
  });

  it('section → importance 分级：重要决策 0.9 / 项目上下文 0.7 / 待办事项 0.5', async () => {
    const { adapter } = makeAdapter(
      JSON.stringify([
        { section: '项目上下文', entry: 'b' },
        { section: '待办事项', entry: 'c' },
      ]),
    );
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    consolidator.setMemoryManager(deps.manager);
    await consolidator.consolidate('q', 'a', []);

    const importances = deps.store.mock.calls.map(
      (c: unknown[]) => (c[0] as { importance: number }).importance,
    );
    expect(importances).toEqual([0.7, 0.5]);
  });

  it('固化请求携带 30s 超时保护与 maxTokens 1024', async () => {
    const { adapter, send } = makeAdapter(JSON.stringify([]));
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    await consolidator.consolidate('q', 'a', []);

    const req = send.mock.calls[0][0] as MetonaRequest;
    expect(req.params.maxTokens).toBe(1024);
    expect(req.params.stream).toBe(false);
    expect(req.params.thinkingEnabled).toBe(false);
  });
});

describe('MemoryConsolidator — 边界与安全过滤', () => {
  it('非白名单 section 被跳过（skipped 计数）', async () => {
    const { adapter } = makeAdapter(
      JSON.stringify([
        { section: '用户偏好', entry: 'ok' },
        { section: '自由发挥', entry: '不合法' },
      ]),
    );
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    const result = await consolidator.consolidate('q', 'a', []);
    expect(result.appended).toBe(1);
    expect(result.skipped).toBe(1);
    expect(deps.appendMemory).toHaveBeenCalledTimes(1);
  });

  it('单次固化最多追加 5 条（MAX_ENTRIES_PER_CONSOLIDATION）', async () => {
    const entries = Array.from({ length: 8 }, (_, i) => ({
      section: '用户偏好',
      entry: `entry-${i}`,
    }));
    const { adapter } = makeAdapter(JSON.stringify(entries));
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    const result = await consolidator.consolidate('q', 'a', []);
    expect(result.appended).toBe(5);
    expect(deps.appendMemory).toHaveBeenCalledTimes(5);
  });

  it('超长条目截断到 500 字符', async () => {
    const longEntry = 'x'.repeat(1200);
    const { adapter } = makeAdapter(JSON.stringify([{ section: '用户偏好', entry: longEntry }]));
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    const result = await consolidator.consolidate('q', 'a', []);
    expect(result.appended).toBe(1);
    const appended = deps.appendMemory.mock.calls[0][1] as string;
    expect(appended).toHaveLength(500);
  });

  it('LLM 返回空数组 → appended 0', async () => {
    const { adapter } = makeAdapter('[]');
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    const result = await consolidator.consolidate('q', 'a', []);
    expect(result.appended).toBe(0);
    expect(deps.appendMemory).not.toHaveBeenCalled();
  });

  it('LLM 返回非 JSON（如纯文本）→ 静默降级 appended 0，不抛错', async () => {
    const { adapter } = makeAdapter('我觉得这段对话没什么值得记住的。');
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    await expect(consolidator.consolidate('q', 'a', [])).resolves.toMatchObject({ appended: 0 });
  });

  it('LLM 抛错（超时/网络）→ 静默降级，不冒泡', async () => {
    const { adapter } = makeAdapter(new Error('summary timeout'));
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    await expect(consolidator.consolidate('q', 'a', [])).resolves.toMatchObject({
      appended: 0,
      entries: [],
      skipped: 0,
    });
  });

  it('appendMemory 单条失败 → 计入 skipped，其余条目继续', async () => {
    const { adapter } = makeAdapter(
      JSON.stringify([
        { section: '用户偏好', entry: 'first' },
        { section: '重要决策', entry: 'second' },
      ]),
    );
    const deps = makeDeps();
    deps.appendMemory.mockImplementation((section: string) => {
      if (section === '用户偏好') throw new Error('disk full');
    });
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    const result = await consolidator.consolidate('q', 'a', []);
    expect(result.appended).toBe(1);
    expect(result.skipped).toBe(1);
    expect(deps.appendMemory).toHaveBeenCalledWith('重要决策', 'second');
  });

  it('appendMemory 失败的条目不写入 semantic_memories（双轨一致性）', async () => {
    const { adapter } = makeAdapter(JSON.stringify([{ section: '用户偏好', entry: 'boom' }]));
    const deps = makeDeps();
    deps.appendMemory.mockImplementation(() => {
      throw new Error('disk full');
    });
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    await consolidator.consolidate('q', 'a', []);
    expect(deps.store).not.toHaveBeenCalled();
  });
});

describe('MemoryConsolidator — 运行状态与退出等待', () => {
  it('空闲时 isRunning=false、waitForCompletion 立即返回 true', async () => {
    const { adapter } = makeAdapter('[]');
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    expect(consolidator.isRunning()).toBe(false);
    expect(await consolidator.waitForCompletion(100)).toBe(true);
  });

  it('运行中 isRunning=true，结束后自动清零（finally 清理）', async () => {
    const { adapter, send } = makeAdapter('[]');
    let resolveSend: (v: { content: string }) => void = () => {};
    send.mockImplementation(
      () =>
        new Promise<{ content: string }>((resolve) => {
          resolveSend = resolve;
        }),
    );
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);

    const pending = consolidator.consolidate('q', 'a', []);
    await vi.waitFor(() => expect(consolidator.isRunning()).toBe(true));

    resolveSend({ content: '[]' });
    await pending;
    expect(consolidator.isRunning()).toBe(false);
  });

  it('waitForCompletion 超时返回 false（退出时强制收口的契约）', async () => {
    const { adapter, send } = makeAdapter('[]');
    // 挂起的 LLM 调用必须可通过 reject 释放 —— consolidate 内部 catch 吞掉错误后
    // finally 清理 runningPromise，isRunning 回到 false
    let release!: () => void;
    send.mockImplementation(
      () =>
        new Promise<{ content: string }>((_, reject) => {
          release = () => reject(new Error('released for test teardown'));
        }),
    );
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    const pending = consolidator.consolidate('q', 'a', []);
    expect(consolidator.isRunning()).toBe(true);

    // 30ms 内 LLM 未完成 → waitForCompletion 返回 false（不等待）
    expect(await consolidator.waitForCompletion(30)).toBe(false);
    expect(consolidator.isRunning()).toBe(true); // 任务仍在

    release();
    await pending;
    expect(consolidator.isRunning()).toBe(false);
  });

  it('并发 consolidate：旧 promise 被 finalize 清理后不影响新任务状态', async () => {
    const { adapter, send } = makeAdapter('[]');
    const deps = makeDeps();
    const consolidator = new MemoryConsolidator(adapter, deps.workspace);
    send.mockResolvedValue({ content: '[]' });

    await Promise.all([
      consolidator.consolidate('q1', 'a1', []),
      consolidator.consolidate('q2', 'a2', []),
    ]);
    expect(consolidator.isRunning()).toBe(false);
  });
});