/**
 * ConfirmationHook 单元测试（v0.4.1 测试补齐）
 * 覆盖：自动执行放行、会话内记忆（批准/拒绝）、拒绝记忆 TTL 过期、
 *       超时拒绝、用户批准、批量审批、pending 管理、恢复询问接口
 */

import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
import type { BrowserWindow } from 'electron';
import { ConfirmationHook } from '../confirmation-hook';
import type { MetonaToolCall, MetonaToolDef } from '../../types';
import { MetonaToolCategory, MetonaRiskLevel } from '../../types';

/** 需要确认的高风险工具定义 */
const HIGH_RISK_DEF: MetonaToolDef = {
  name: 'run_command',
  description: 'Execute shell command (test fixture)',
  parameters: { type: 'object', properties: {}, required: [] },
  category: MetonaToolCategory.CODE_EXECUTION,
  riskLevel: MetonaRiskLevel.HIGH,
  requiresPermission: true,
  timeoutMs: 1_000,
};

/** 低风险工具定义（无需确认） */
const SAFE_DEF: MetonaToolDef = {
  name: 'read_file',
  description: 'Read file (test fixture)',
  parameters: { type: 'object', properties: {}, required: [] },
  category: MetonaToolCategory.FILE_SYSTEM,
  riskLevel: MetonaRiskLevel.SAFE,
  requiresPermission: false,
  timeoutMs: 1_000,
};

/** 第二个需确认的高风险工具（用于记忆互不干扰的测试） */
const HIGH_RISK_DEF_2: MetonaToolDef = {
  name: 'delete_file',
  description: 'Delete file (test fixture)',
  parameters: { type: 'object', properties: {}, required: [] },
  category: MetonaToolCategory.FILE_SYSTEM,
  riskLevel: MetonaRiskLevel.HIGH,
  requiresPermission: true,
  timeoutMs: 1_000,
};

let idCounter = 0;
function makeToolCall(name = 'run_command'): MetonaToolCall {
  return {
    id: `tc_${++idCounter}`,
    name,
    args: { command: 'ls' },
    iteration: 1,
    timestamp: Date.now(),
  };
}

function makeMockWindow(): BrowserWindow {
  return {
    isDestroyed: () => false,
    webContents: { send: vi.fn() },
  } as unknown as BrowserWindow;
}

describe('ConfirmationHook — 免确认路径', () => {
  it('未注册工具定义时放行（由 ToolRegistry 处理未知工具错误）', async () => {
    const hook = new ConfirmationHook(null, null);
    const result = await hook.beforeExecute(makeToolCall('unknown_tool'), 'sess');
    expect(result.blocked).toBe(false);
  });

  it('无需确认的工具直接放行', async () => {
    const hook = new ConfirmationHook(null, null);
    hook.setToolDefs([SAFE_DEF]);
    const result = await hook.beforeExecute(makeToolCall('read_file'), 'sess');
    expect(result.blocked).toBe(false);
  });

  it('持久化自动执行（autoExecute）的工具放行', async () => {
    const hook = new ConfirmationHook(null, null);
    hook.setToolDefs([HIGH_RISK_DEF]);
    hook.setAutoExecute('run_command', true);
    const result = await hook.beforeExecute(makeToolCall(), 'sess');
    expect(result.blocked).toBe(false);
    expect(hook.getAutoExecuteList()).toContain('run_command');
  });

  it('记住批准（remember approved）后同会话放行', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF]);

    // 第一次调用 → 等待确认 → 用户批准并记住
    const p1 = hook.beforeExecute(makeToolCall(), 'sess');
    const pending = hook.getPendingConfirmations();
    expect(pending).toHaveLength(1);
    hook.resolveConfirmation(pending[0].toolCallId, true, true, false);
    expect((await p1).blocked).toBe(false);

    // 第二次调用 — 记住的批准直接放行
    const result = await hook.beforeExecute(makeToolCall(), 'sess');
    expect(result.blocked).toBe(false);
  });
});

describe('ConfirmationHook — 拒绝与阻断', () => {
  it('记住拒绝后同会话阻断（reason 含 previously denied）', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF]);

    const p1 = hook.beforeExecute(makeToolCall(), 'sess');
    const pending = hook.getPendingConfirmations();
    hook.resolveConfirmation(pending[0].toolCallId, false, true, false);
    expect((await p1).blocked).toBe(true);

    const result = await hook.beforeExecute(makeToolCall(), 'sess');
    expect(result.blocked).toBe(true);
    expect(result.reason).toContain('previously denied');
  });

  it('拒绝记忆 TTL 过期后恢复询问（v0.4.1）', async () => {
    vi.useFakeTimers();
    try {
      const hook = new ConfirmationHook(makeMockWindow(), null);
      hook.setToolDefs([HIGH_RISK_DEF]);

      // 记住拒绝
      const p1 = hook.beforeExecute(makeToolCall(), 'sess');
      const pending1 = hook.getPendingConfirmations();
      hook.resolveConfirmation(pending1[0].toolCallId, false, true, false);
      await p1;

      // 拒绝记忆立即生效
      const blockedNow = await hook.beforeExecute(makeToolCall(), 'sess');
      expect(blockedNow.blocked).toBe(true);
      expect(blockedNow.reason).toContain('previously denied');

      // 快进 11 分钟（TTL 10 分钟）→ 拒绝记忆过期，恢复询问流程
      vi.setSystemTime(Date.now() + 11 * 60 * 1000);
      // 撤掉主窗口，使询问流程以 'no main window' 阻断（证明走到了询问分支而非记忆分支）
      hook.setMainWindow(null as unknown as BrowserWindow);
      const result = await hook.beforeExecute(makeToolCall(), 'sess');
      expect(result.blocked).toBe(true);
      expect(result.reason).toContain('no main window available');
      // 过期记忆已被清理
      expect(hook.getRememberedDenials()).toHaveLength(0);
    } finally {
      vi.useRealTimers();
    }
  });

  it('无主窗口时安全阻断（fail-closed）', async () => {
    const hook = new ConfirmationHook(null, null);
    hook.setToolDefs([HIGH_RISK_DEF]);
    const result = await hook.beforeExecute(makeToolCall(), 'sess');
    expect(result.blocked).toBe(true);
    expect(result.reason).toContain('no main window available');
  });

  it('用户拒绝单次调用 → blocked 且 reason 含 User denied', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF]);

    const p = hook.beforeExecute(makeToolCall(), 'sess');
    const pending = hook.getPendingConfirmations();
    hook.resolveConfirmation(pending[0].toolCallId, false, false, false);
    const result = await p;
    expect(result.blocked).toBe(true);
    expect(result.reason).toContain('User denied');
  });
});

describe('ConfirmationHook — 超时行为', () => {
  beforeEach(() => {
    vi.useFakeTimers();
  });
  afterEach(() => {
    vi.useRealTimers();
  });

  it('确认超时视为拒绝（blocked）', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF]);
    hook.setConfirmationTimeout(30_000); // 最小值 30s

    const p = hook.beforeExecute(makeToolCall(), 'sess');
    // 快进超过超时时间
    vi.advanceTimersByTime(31_000);
    const result = await p;
    expect(result.blocked).toBe(true);
    expect(result.reason).toContain('User denied');
    // pending 已被超时清理
    expect(hook.getPendingConfirmations()).toHaveLength(0);
  });

  it('确认超时与用户点击的竞态：先到者赢（settled 标志）', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF]);
    hook.setConfirmationTimeout(30_000);

    const p = hook.beforeExecute(makeToolCall(), 'sess');
    // timer 回调已入队但未执行时，用户点击批准
    vi.advanceTimersByTime(30_000);
    // 超时已 resolve(false) — 后续 resolveConfirmation 无效果
    const pending = hook.getPendingConfirmations();
    expect(pending).toHaveLength(0);
    const result = await p;
    expect(result.blocked).toBe(true);
  });
});

describe('ConfirmationHook — 批量审批（v0.3.2）', () => {
  it('批量批准并行工具调用', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF]);

    const p1 = hook.beforeExecute(makeToolCall(), 'sess');
    const p2 = hook.beforeExecute(makeToolCall(), 'sess');
    expect(hook.getPendingConfirmations()).toHaveLength(2);

    const ids = hook.getPendingConfirmations().map((r) => r.toolCallId);
    const resolved = hook.resolveConfirmationsBatch(ids, true, false, false);
    expect(resolved).toHaveLength(2);

    expect((await p1).blocked).toBe(false);
    expect((await p2).blocked).toBe(false);
  });

  it('批量拒绝 + 记住 → 同工具后续调用被记忆阻断', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF]);

    const p1 = hook.beforeExecute(makeToolCall(), 'sess');
    const p2 = hook.beforeExecute(makeToolCall(), 'sess');
    const ids = hook.getPendingConfirmations().map((r) => r.toolCallId);
    hook.resolveConfirmationsBatch(ids, false, true, false);

    expect((await p1).blocked).toBe(true);
    expect((await p2).blocked).toBe(true);

    const after = await hook.beforeExecute(makeToolCall(), 'sess');
    expect(after.blocked).toBe(true);
    expect(after.reason).toContain('previously denied');
  });

  it('批量批准 + autoExecute → 写入持久化自动执行列表', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF]);

    const p = hook.beforeExecute(makeToolCall(), 'sess');
    const ids = hook.getPendingConfirmations().map((r) => r.toolCallId);
    hook.resolveConfirmationsBatch(ids, true, false, true);

    expect((await p).blocked).toBe(false);
    expect(hook.getAutoExecuteList()).toContain('run_command');
  });
});

describe('ConfirmationHook — 拒绝记忆管理接口（v0.4.1）', () => {
  it('getRememberedDenials 只返回拒绝记忆（含剩余时间）', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF, HIGH_RISK_DEF_2]);

    // 记住一个批准（run_command）、一个拒绝（delete_file）
    const pApprove = hook.beforeExecute(makeToolCall('run_command'), 'sess');
    hook.resolveConfirmation(hook.getPendingConfirmations()[0].toolCallId, true, true, false);
    await pApprove;

    const pDeny = hook.beforeExecute(makeToolCall('delete_file'), 'sess');
    hook.resolveConfirmation(hook.getPendingConfirmations()[0].toolCallId, false, true, false);
    await pDeny;

    const denials = hook.getRememberedDenials();
    expect(denials).toHaveLength(1);
    expect(denials[0].toolName).toBe('delete_file');
    expect(denials[0].expiresInSeconds).toBeGreaterThan(0);
    expect(denials[0].expiresInSeconds).toBeLessThanOrEqual(600);
  });

  it('resetRememberedDenial 重置后恢复询问', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF]);

    const p = hook.beforeExecute(makeToolCall(), 'sess');
    hook.resolveConfirmation(hook.getPendingConfirmations()[0].toolCallId, false, true, false);
    await p;
    expect(hook.getRememberedDenials()).toHaveLength(1);

    // 重置 → 拒绝记忆清空
    expect(hook.resetRememberedDenial('run_command')).toBe(true);
    expect(hook.getRememberedDenials()).toHaveLength(0);

    // 后续调用恢复询问（有窗口 → 产生新 pending）
    const p2 = hook.beforeExecute(makeToolCall(), 'sess');
    expect(hook.getPendingConfirmations()).toHaveLength(1);
    hook.resolveConfirmation(hook.getPendingConfirmations()[0].toolCallId, true, false, false);
    expect((await p2).blocked).toBe(false);
  });

  it('resetRememberedDenial 对无拒绝记忆的工具返回 false', () => {
    const hook = new ConfirmationHook(null, null);
    expect(hook.resetRememberedDenial('run_command')).toBe(false);
  });
});

describe('ConfirmationHook — clearPending', () => {
  it('清空所有等待中的确认（全部视为拒绝）', async () => {
    const hook = new ConfirmationHook(makeMockWindow(), null);
    hook.setToolDefs([HIGH_RISK_DEF]);

    const p1 = hook.beforeExecute(makeToolCall(), 'sess');
    const p2 = hook.beforeExecute(makeToolCall(), 'sess');
    hook.clearPending();

    expect((await p1).blocked).toBe(true);
    expect((await p2).blocked).toBe(true);
    expect(hook.getPendingConfirmations()).toHaveLength(0);
  });
});