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

import {
  findSodConflicts,
  isPermissionCode,
  isSpecialPermission,
  parsePermission,
  Permission,
  PERMISSION_CATALOG,
  PERMISSION_CODES,
  PERMISSION_MODULES,
  permissionMetaOf,
  permissionsByModule,
  ROLE_SOFT_LIMIT,
  SOD_PAIRS,
  SPECIAL_PERMISSIONS,
  splitPermissions,
  SUPER_ADMIN_SOFT_LIMIT,
} from './permissions.js';

describe('权限点目录', () => {
  it('H1 口径：共 30 个权限点，编码全局唯一', () => {
    expect(PERMISSION_CODES).toHaveLength(30);
    expect(PERMISSION_CATALOG).toHaveLength(30);
    expect(new Set(PERMISSION_CODES).size).toBe(30);
  });

  it('全部符合 模块:动作 命名且模块为小写', () => {
    for (const code of PERMISSION_CODES) {
      expect(code).toMatch(/^[a-z][a-z_]*:[a-z][a-z_]*$/);
      expect(parsePermission(code)).not.toBeNull();
    }
  });

  it('保留既有 read / write 编码，并补齐 H1 新增的 5 个权限点', () => {
    for (const code of [
      'script:read',
      'script:write',
      'material:read',
      'material:write',
      'asset:read',
      'asset:write',
      'delivery:read',
      'customer:read',
    ]) {
      expect(PERMISSION_CODES).toContain(code);
    }
    expect(Permission.ROLE_VIEW).toBe('role:view');
    expect(Permission.CUSTOMER_FIELD_APPLY).toBe('customer_field:apply');
    expect(Permission.CUSTOMER_TRANSFER).toBe('customer:transfer');
    expect(Permission.CUSTOMER_GROUP_MANAGE).toBe('customer_group:manage');
    expect(Permission.ASSET_DELETE).toBe('asset:delete');
  });

  it('权限树为 10 个模块，顺序与名称对齐 design/a2-ui-v1/brief.md', () => {
    const groups = permissionsByModule();
    expect(groups).toHaveLength(10);
    expect(PERMISSION_MODULES).toHaveLength(10);
    expect(groups.map((group) => group.module)).toEqual([
      'script',
      'material',
      'asset',
      'delivery',
      'customer',
      'customer_group',
      'identity',
      'industry',
      'platform',
      'audit',
    ]);
    expect(groups.map((group) => group.moduleLabel)).toEqual([
      '脚本',
      '素材',
      '资产',
      '导出交付',
      '客户',
      '客户组',
      '组织与角色',
      '行业包',
      '平台配置',
      '审计',
    ]);
    expect(groups.map((group) => group.sortOrder)).toEqual([
      10, 20, 30, 40, 50, 60, 70, 80, 90, 100,
    ]);
    expect(groups.flatMap((group) => group.permissions)).toHaveLength(30);
  });

  it('权限点显示名与说明与 UI 原型一致（抽样关键项）', () => {
    const nameOf = (code: string): { name: string; description: string } => {
      const meta = permissionMetaOf(code);
      if (meta === undefined) {
        throw new Error(`权限点未登记：${code}`);
      }
      return { name: meta.name, description: meta.description };
    };
    expect(nameOf('script:read')).toEqual({ name: '查看脚本', description: '脚本库、模板与版本' });
    expect(nameOf('delivery:export')).toEqual({
      name: '发起导出',
      description: '数据离开平台的唯一出口（特殊）',
    });
    expect(nameOf('user:manage')).toEqual({ name: '管理用户', description: '新建、停用、转交' });
    expect(nameOf('customer_group:manage')).toEqual({
      name: '管理客户组',
      description: '客户组增改与成员',
    });
    expect(nameOf('audit:export')).toEqual({
      name: '导出审计',
      description: '审计导出并留痕（特殊）',
    });
  });

  it('目录元数据完整（编码 / 模块 / 名称 / 说明 / 特殊标记 / 排序）', () => {
    for (const item of PERMISSION_CATALOG) {
      expect(permissionMetaOf(item.code)).toEqual(item);
      expect(item.name.length).toBeGreaterThan(0);
      expect(item.description.length).toBeGreaterThan(0);
      expect(item.moduleLabel.length).toBeGreaterThan(0);
      expect(item.isSpecial).toBe(isSpecialPermission(item.code));
    }
    const sortOrders = PERMISSION_CATALOG.map((item) => item.sortOrder);
    expect(sortOrders).toEqual([...sortOrders].sort((a, b) => a - b));
  });

  it('特殊权限为 6 个编码（5 类），均已在目录登记', () => {
    expect(SPECIAL_PERMISSIONS).toHaveLength(6);
    expect([...SPECIAL_PERMISSIONS].sort()).toEqual(
      [
        'delivery:export',
        'customer_field:approve',
        'industry:publish',
        'ai:configure',
        'audit:read',
        'audit:export',
      ].sort(),
    );
    for (const code of SPECIAL_PERMISSIONS) {
      expect(PERMISSION_CODES).toContain(code);
      expect(isSpecialPermission(code)).toBe(true);
    }
    expect(isSpecialPermission('script:write')).toBe(false);
  });

  it('软上限取自 PRD 建议值', () => {
    expect(ROLE_SOFT_LIMIT).toBe(20);
    expect(SUPER_ADMIN_SOFT_LIMIT).toBe(2);
  });
});

describe('SoD 三对', () => {
  it('互斥对为三对，且两侧都是已登记权限点', () => {
    expect(SOD_PAIRS).toHaveLength(3);
    expect(SOD_PAIRS.map((pair) => pair.id)).toEqual([
      'script-write-review',
      'industry-manage-publish',
      'customer-field-apply-approve',
    ]);
    for (const pair of SOD_PAIRS) {
      for (const code of pair.permissions) {
        expect(PERMISSION_CODES).toContain(code);
      }
    }
  });

  it('同时拥有互斥两侧即命中；只拥有单侧不命中', () => {
    expect(findSodConflicts(['script:write', 'script:review'])).toEqual([
      {
        pairId: 'script-write-review',
        label: '脚本生成 × 脚本审核',
        permissions: ['script:write', 'script:review'],
      },
    ]);
    expect(findSodConflicts(['industry:manage', 'industry:publish']).map((c) => c.pairId)).toEqual([
      'industry-manage-publish',
    ]);
    expect(
      findSodConflicts(['customer_field:apply', 'customer_field:approve']).map((c) => c.pairId),
    ).toEqual(['customer-field-apply-approve']);
    expect(findSodConflicts(['script:write', 'script:read'])).toEqual([]);
    expect(findSodConflicts([])).toEqual([]);
  });
});

describe('splitPermissions', () => {
  it('拆分普通权限与特殊权限并去重排序', () => {
    expect(
      splitPermissions([
        'script:write',
        'delivery:export',
        'script:read',
        'delivery:export',
        'audit:read',
      ]),
    ).toEqual({
      permissions: ['script:read', 'script:write'],
      specialPermissions: ['audit:read', 'delivery:export'],
    });
  });

  it('未登记编码抛错（调用方映射 40001）', () => {
    expect(() => splitPermissions(['script:delete_all'])).toThrow(
      'INVALID_PERMISSION_CODE:script:delete_all',
    );
  });
});

describe('parsePermission', () => {
  it('拆分模块与动作', () => {
    expect(parsePermission('material:render')).toEqual({ module: 'material', action: 'render' });
  });

  it('非法格式返回 null', () => {
    expect(parsePermission('scriptread')).toBeNull();
    expect(parsePermission(':read')).toBeNull();
    expect(parsePermission('script:')).toBeNull();
    expect(parsePermission('a:b:c')).toBeNull();
  });
});

describe('isPermissionCode', () => {
  it('只认可登记值', () => {
    expect(isPermissionCode(Permission.SCRIPT_READ)).toBe(true);
    expect(isPermissionCode('script:delete_all')).toBe(false);
  });
});