import { tap, expect } from '@git.zone/tstest/tapbundle';
import * as plugins from '../ts/plugins.js';
import { DcRouterDb, IpIntelligenceDoc, SecurityBlockRuleDoc, SecurityPolicyAuditDoc } from '../ts/db/index.js';
import { SecurityPolicyManager } from '../ts/security/index.js';

const createTestDb = async () => {
  const storagePath = plugins.path.join(
    plugins.os.tmpdir(),
    `dcrouter-security-policy-${Date.now()}-${Math.random().toString(16).slice(2)}`,
  );

  DcRouterDb.resetInstance();
  const db = DcRouterDb.getInstance({
    storagePath,
    dbName: `dcrouter-security-policy-${Date.now()}-${Math.random().toString(16).slice(2)}`,
  });
  await db.start();
  await db.getDb().mongoDb.createCollection('__test_init');

  return {
    async cleanup() {
      await db.stop();
      DcRouterDb.resetInstance();
      await plugins.fs.promises.rm(storagePath, { recursive: true, force: true });
    },
  };
};

const testDbPromise = createTestDb();

const clearTestState = async () => {
  for (const rule of await SecurityBlockRuleDoc.findAll()) {
    await rule.delete();
  }
  for (const record of await IpIntelligenceDoc.findAll()) {
    await record.delete();
  }
  for (const event of await SecurityPolicyAuditDoc.findRecent(1000)) {
    await event.delete();
  }
};

const createIntelligenceResult = (asn: number) => ({
  asn,
  asnOrg: `ASN ${asn}`,
  registrantOrg: null,
  registrantCountry: null,
  networkRange: null,
  networkCidrs: null,
  abuseContact: null,
  country: null,
  countryCode: 'US',
  city: null,
  latitude: null,
  longitude: null,
  accuracyRadius: null,
  timezone: null,
});

tap.test('SecurityPolicyManager compiles start-end CIDR rules for edge firewall snapshots', async () => {
  await testDbPromise;
  await clearTestState();
  const manager = new SecurityPolicyManager();

  await manager.createBlockRule({
    type: 'cidr',
    value: '203.0.113.0 - 203.0.113.255',
    reason: 'test range',
  });

  const policy = await manager.compilePolicy();
  expect(policy.blockedCidrs).toEqual(['203.0.113.0/24']);

  const firewall = await manager.compileRemoteIngressFirewall();
  expect(firewall.blockedIps).toEqual(['203.0.113.0/24']);
});

tap.test('SecurityPolicyManager compiles intelligence network ranges for ASN rules', async () => {
  await testDbPromise;
  await clearTestState();
  const manager = new SecurityPolicyManager();

  const intelligenceDoc = new IpIntelligenceDoc();
  intelligenceDoc.ipAddress = '198.51.100.23';
  intelligenceDoc.asn = 64500;
  intelligenceDoc.asnOrg = 'Example Network';
  intelligenceDoc.networkRange = '198.51.100.0 - 198.51.100.127';
  intelligenceDoc.firstSeenAt = Date.now();
  intelligenceDoc.lastSeenAt = Date.now();
  intelligenceDoc.updatedAt = Date.now();
  intelligenceDoc.seenCount = 1;
  await intelligenceDoc.save();

  await manager.createBlockRule({
    type: 'asn',
    value: 'AS64500',
    reason: 'test asn range',
  });

  const policy = await manager.compilePolicy();
  expect(policy.blockedCidrs).toEqual(['198.51.100.0/25']);
});

tap.test('SecurityPolicyManager compiles intelligence CIDR arrays for ASN rules', async () => {
  await testDbPromise;
  await clearTestState();
  const manager = new SecurityPolicyManager();

  const intelligenceDoc = new IpIntelligenceDoc();
  intelligenceDoc.ipAddress = '198.51.100.130';
  intelligenceDoc.asn = 64501;
  intelligenceDoc.asnOrg = 'Example Split Network';
  intelligenceDoc.networkRange = null;
  intelligenceDoc.networkCidrs = ['198.51.100.128/25', '198.51.101.0/24'];
  intelligenceDoc.firstSeenAt = Date.now();
  intelligenceDoc.lastSeenAt = Date.now();
  intelligenceDoc.updatedAt = Date.now();
  intelligenceDoc.seenCount = 1;
  await intelligenceDoc.save();

  await manager.createBlockRule({
    type: 'asn',
    value: 'AS64501',
    reason: 'test asn cidr array',
  });

  const policy = await manager.compilePolicy();
  expect(policy.blockedCidrs).toEqual(['198.51.100.128/25', '198.51.101.0/24']);
});

tap.test('SecurityPolicyManager returns an explicit empty edge firewall snapshot', async () => {
  await testDbPromise;
  await clearTestState();
  const manager = new SecurityPolicyManager();

  const firewall = await manager.compileRemoteIngressFirewall();
  expect(firewall).toEqual({ blockedIps: [] });
});

tap.test('SecurityPolicyManager filters listed IP intelligence records', async () => {
  await testDbPromise;
  await clearTestState();
  const manager = new SecurityPolicyManager();

  for (const [ipAddress, asn] of [['8.8.8.8', 15169], ['1.1.1.1', 13335]] as const) {
    const intelligenceDoc = new IpIntelligenceDoc();
    intelligenceDoc.ipAddress = ipAddress;
    intelligenceDoc.asn = asn;
    intelligenceDoc.asnOrg = `ASN ${asn}`;
    intelligenceDoc.firstSeenAt = Date.now();
    intelligenceDoc.lastSeenAt = Date.now();
    intelligenceDoc.updatedAt = Date.now();
    intelligenceDoc.seenCount = 1;
    await intelligenceDoc.save();
  }

  const records = await manager.listIpIntelligence({ ipAddresses: ['1.1.1.1'] });

  expect(records).toHaveLength(1);
  expect(records[0].ipAddress).toEqual('1.1.1.1');
});

tap.test('SecurityPolicyManager force refresh waits for an in-flight background observation', async () => {
  await testDbPromise;
  await clearTestState();
  const manager = new SecurityPolicyManager({ intelligenceRefreshMs: 0 });

  let releaseFirstLookup!: () => void;
  let lookupCount = 0;
  (manager as any).smartNetwork = {
    getIpIntelligence: async () => {
      lookupCount++;
      if (lookupCount === 1) {
        await new Promise<void>((resolve) => { releaseFirstLookup = resolve; });
        return createIntelligenceResult(64500);
      }
      return createIntelligenceResult(64501);
    },
    stop: async () => {},
  };

  const backgroundObservation = manager.observeIp('8.8.8.8');
  await new Promise((resolve) => setTimeout(resolve, 10));
  const forcedRefresh = manager.refreshIpIntelligence('8.8.8.8');
  releaseFirstLookup();

  const record = await forcedRefresh;
  await backgroundObservation;

  expect(lookupCount).toEqual(2);
  expect(record?.asn).toEqual(64501);
});

tap.test('cleanup security policy test db', async () => {
  const dbHandle = await testDbPromise;
  await clearTestState();
  await dbHandle.cleanup();
});

export default tap.start();