process.env.DATABASE_PATH = ':memory:';
process.env.THEMES_DIR = './themes';
process.env.FRONTEND_DIST = './frontend/dist';
process.env.NODE_ENV = 'test';

import { Test } from '@nestjs/testing';
import { TypeOrmModule, getDataSourceToken } from '@nestjs/typeorm';
import { ConfigModule } from '@nestjs/config';
import * as fs from 'fs';
import * as os from 'os';
import * as path from 'path';
import { validateEnv } from '../../backend/src/config/env.schema';
import { BackupService } from '../../backend/src/modules/admin/system/backup.service';
import { UserEntity } from '../../backend/src/database/entities/user.entity';
import { SettingEntity } from '../../backend/src/database/entities/setting.entity';
import { CategoryEntity } from '../../backend/src/database/entities/category.entity';
import { ChallengeEntity } from '../../backend/src/database/entities/challenge.entity';
import { ChallengeFileEntity } from '../../backend/src/database/entities/challenge-file.entity';
import { SolveEntity } from '../../backend/src/database/entities/solve.entity';
import { RefreshTokenEntity } from '../../backend/src/database/entities/refresh-token.entity';
import { BlogPostEntity } from '../../backend/src/database/entities/blog-post.entity';
import { AdminOperationTokenEntity } from '../../backend/src/database/entities/admin-operation-token.entity';
import { InitSchema1700000000000 } from '../../backend/src/database/migrations/1700000000000-InitSchema';
import { SeedSystemData1700000000100 } from '../../backend/src/database/migrations/1700000000100-SeedSystemData';
import { AddCategoryTimestampsAndUniqueAbbrev1700000000200 } from '../../backend/src/database/migrations/1700000000200-AddCategoryTimestampsAndUniqueAbbrev';
import { UpdateSystemCategoryKeys1700000000300 } from '../../backend/src/database/migrations/1700000000300-UpdateSystemCategoryKeys';
import { RepairCategorySchemaAndSystemCategories1700000000400 } from '../../backend/src/database/migrations/1700000000400-RepairCategorySchemaAndSystemCategories';
import { UpgradeChallengeAdminSchema1700000000500 } from '../../backend/src/database/migrations/1700000000500-UpgradeChallengeAdminSchema';
import { AddAdminOperationTokens1700000000900 } from '../../backend/src/database/migrations/1700000000900-AddAdminOperationTokens';

describe('Job 871: BackupService captures + filters', () => {
  let moduleRef: any;
  let backup: BackupService;
  let uploadDir: string;

  beforeAll(async () => {
    uploadDir = fs.mkdtempSync(path.join(os.tmpdir(), 'hipctf-sys-backup-'));
    process.env.UPLOAD_DIR = uploadDir;
    fs.writeFileSync(path.join(uploadDir, 'logo.bin'), Buffer.from('LOGO-BYTES'));
    fs.mkdirSync(path.join(uploadDir, 'icons'), { recursive: true });
    fs.writeFileSync(path.join(uploadDir, 'icons', 'icon.png'), Buffer.from('ICON'));

    moduleRef = await Test.createTestingModule({
      imports: [
        ConfigModule.forRoot({ isGlobal: true, validate: validateEnv }),
        TypeOrmModule.forRoot({
          type: 'better-sqlite3',
          database: ':memory:',
          entities: [
            UserEntity, SettingEntity, CategoryEntity, ChallengeEntity,
            ChallengeFileEntity, SolveEntity, RefreshTokenEntity, BlogPostEntity,
            AdminOperationTokenEntity,
          ],
          migrations: [
            InitSchema1700000000000,
            SeedSystemData1700000000100,
            AddCategoryTimestampsAndUniqueAbbrev1700000000200,
            UpdateSystemCategoryKeys1700000000300,
            RepairCategorySchemaAndSystemCategories1700000000400,
            UpgradeChallengeAdminSchema1700000000500,
            AddAdminOperationTokens1700000000900,
          ],
          migrationsRun: true,
          synchronize: false,
        }),
      ],
      providers: [BackupService],
    }).compile();
    backup = moduleRef.get(BackupService);
    const dataSource = moduleRef.get(getDataSourceToken());
    await dataSource.query(
      `INSERT INTO user (id,username,password_hash,role,status,created_at) VALUES (?,?,?,?,?,strftime('%Y-%m-%dT%H:%M:%fZ','now'))`,
      ['u-1', 'alice', 'HASH', 'player', 'enabled'],
    );
    await dataSource.query(`INSERT INTO setting (key,value) VALUES (?,?)`, ['testCustomKey', 'HIPCTF']);
  });

  afterAll(async () => {
    await moduleRef?.close();
    if (uploadDir && fs.existsSync(uploadDir)) {
      try {
        fs.rmSync(uploadDir, { recursive: true, force: true });
      } catch {
        // ignore
      }
    }
  });

  it('captures every application table and base64-encoded uploads', async () => {
    const obj = await backup.build();
    expect(obj.format).toBe('hipctf-system-backup');
    expect(obj.tables.user.length).toBeGreaterThanOrEqual(1);
    expect(obj.tables.setting.length).toBeGreaterThanOrEqual(1);
    expect(obj.uploads.length).toBeGreaterThanOrEqual(1);
    const logo = obj.uploads.find((u) => u.path.includes('logo.bin'));
    expect(logo).toBeDefined();
    expect(Buffer.from(logo!.dataBase64, 'base64').toString()).toBe('LOGO-BYTES');
  });

  it('never includes operational or sqlite-internal tables', async () => {
    const obj = await backup.build();
    expect(Object.keys(obj.tables)).not.toContain('admin_operation_token');
    expect(Object.keys(obj.tables)).not.toContain('migrations');
    expect(Object.keys(obj.tables)).not.toContain('sqlite_master');
    expect(obj.tableCounts['admin_operation_token']).toBeUndefined();
  });
});