// Copyright 2022 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only

import { assert } from 'chai';
import { ServiceIdKind, Proto, StorageState } from '@signalapp/mock-server';
import type { PrimaryDevice } from '@signalapp/mock-server';
import createDebug from 'debug';
import Long from 'long';

import * as durations from '../../util/durations';
import { uuidToBytes } from '../../util/uuidToBytes';
import { generateConfigMatrix } from '../../util/generateConfigMatrix';
import { toUntaggedPni } from '../../types/ServiceId';
import { MY_STORY_ID } from '../../types/Stories';
import { Bootstrap } from '../bootstrap';
import type { App } from '../bootstrap';
import { expectSystemMessages, typeIntoInput } from '../helpers';

export const debug = createDebug('mock:test:merge');

const IdentifierType = Proto.ManifestRecord.Identifier.Type;

describe('pnp/merge', function (this: Mocha.Suite) {
  this.timeout(durations.MINUTE);

  let bootstrap: Bootstrap;
  let app: App;
  let pniContact: PrimaryDevice;
  let pniIdentityKey: Uint8Array;
  let aciIdentityKey: Uint8Array;

  beforeEach(async () => {
    bootstrap = new Bootstrap({ contactCount: 0 });
    await bootstrap.init();

    const { server, phone } = bootstrap;

    pniContact = await server.createPrimaryDevice({
      profileName: 'ACI Contact',
    });
    pniIdentityKey = pniContact.getPublicKey(ServiceIdKind.PNI).serialize();
    aciIdentityKey = pniContact.publicKey.serialize();

    let state = StorageState.getEmpty();

    state = state.updateAccount({
      profileKey: phone.profileKey.serialize(),
      e164: phone.device.number,
    });

    state = state.addContact(
      pniContact,
      {
        identityState: Proto.ContactRecord.IdentityState.DEFAULT,
        whitelisted: true,

        identityKey: pniIdentityKey,

        serviceE164: pniContact.device.number,
        givenName: 'PNI Contact',
      },
      ServiceIdKind.PNI
    );

    state = state.addContact(pniContact, {
      identityState: Proto.ContactRecord.IdentityState.DEFAULT,
      whitelisted: true,

      serviceE164: undefined,
      identityKey: aciIdentityKey,
      givenName: pniContact.profileName,
    });

    // Put both contacts in left pane
    state = state.pin(pniContact, ServiceIdKind.PNI);
    state = state.pin(pniContact, ServiceIdKind.ACI);

    // Add my story
    state = state.addRecord({
      type: IdentifierType.STORY_DISTRIBUTION_LIST,
      record: {
        storyDistributionList: {
          allowsReplies: true,
          identifier: uuidToBytes(MY_STORY_ID),
          isBlockList: true,
          name: MY_STORY_ID,
          recipientServiceIds: [],
        },
      },
    });

    await phone.setStorageState(state);

    app = await bootstrap.link();
  });

  afterEach(async function (this: Mocha.Context) {
    await bootstrap.maybeSaveLogs(this.currentTest, app);
    await app.close();
    await bootstrap.teardown();
  });

  const matrix = generateConfigMatrix({
    finalContact: [ServiceIdKind.ACI, ServiceIdKind.PNI],
    withPNIMessage: [false, true],
    pniSignatureVerified: [false, true],
  });
  for (const { finalContact, withPNIMessage, pniSignatureVerified } of matrix) {
    const testName =
      'happens via storage service, ' +
      `${withPNIMessage ? 'with' : 'without'} pni message ` +
      `${pniSignatureVerified ? 'with' : 'without'} pniSignatureVerified ` +
      `(${finalContact})`;

    // eslint-disable-next-line no-loop-func
    it(testName, async () => {
      const { phone } = bootstrap;

      const window = await app.getWindow();
      const leftPane = window.locator('#LeftPane');

      debug('opening conversation with the aci contact');
      await leftPane
        .locator(`[data-testid="${pniContact.device.aci}"]`)
        .click();

      await window.locator('.module-conversation-hero').waitFor();

      debug('Send message to ACI');
      {
        const compositionInput = await app.waitForEnabledComposer();

        await typeIntoInput(compositionInput, 'Hello ACI');
        await compositionInput.press('Enter');
      }

      debug('opening conversation with the pni contact');
      await leftPane
        .locator('.module-conversation-list__item--contact-or-conversation')
        .first()
        .click();

      await window.locator('.module-conversation-hero').waitFor();

      debug('Verify starting state');
      {
        // No messages
        const messages = window.locator('.module-message__text');
        assert.strictEqual(await messages.count(), 0, 'message count');

        await expectSystemMessages(window, [
          // none
        ]);
      }

      if (withPNIMessage) {
        debug('Send message to PNI');
        const compositionInput = await app.waitForEnabledComposer();

        await typeIntoInput(compositionInput, 'Hello PNI');
        await compositionInput.press('Enter');
      }

      if (finalContact === ServiceIdKind.ACI) {
        debug('switching back to ACI conversation');
        await leftPane
          .locator(`[data-testid="${pniContact.device.aci}"]`)
          .click();

        await window.locator('.module-conversation-hero').waitFor();
      }

      debug(
        'removing both contacts from storage service, adding one combined contact'
      );
      {
        const state = await phone.expectStorageState('consistency check');
        await phone.setStorageState(
          state.mergeContact(pniContact, {
            identityState: Proto.ContactRecord.IdentityState.DEFAULT,
            whitelisted: true,
            identityKey: pniContact.publicKey.serialize(),
            profileKey: pniContact.profileKey.serialize(),
            pniSignatureVerified,
          })
        );
        await phone.sendFetchStorage({
          timestamp: bootstrap.getTimestamp(),
        });
        await app.waitForManifestVersion(state.version);
      }

      debug('Verify final state');
      {
        // Should have both PNI and ACI messages
        await window.locator('.module-message__text >> "Hello ACI"').waitFor();
        if (withPNIMessage) {
          await window
            .locator('.module-message__text >> "Hello PNI"')
            .waitFor();
        }

        const messages = window.locator('.module-message__text');
        assert.strictEqual(
          await messages.count(),
          withPNIMessage ? 2 : 1,
          'message count'
        );

        if (withPNIMessage) {
          if (pniSignatureVerified) {
            await expectSystemMessages(window, [
              /Your message history with ACI Contact and their number .* has been merged\./,
            ]);
          } else {
            await expectSystemMessages(window, [
              /Your message history with ACI Contact and their number .* has been merged\./,
            ]);
          }
        } else {
          await expectSystemMessages(window, [
            // none
          ]);
        }
      }
    });
  }

  for (const withPniContact of [false, true]) {
    const testName =
      'accepts storage service contact splitting ' +
      `${withPniContact ? 'with PNI contact' : 'without PNI contact'}`;

    // eslint-disable-next-line no-loop-func
    it(testName, async () => {
      const { phone } = bootstrap;

      debug(
        'removing both contacts from storage service, adding one combined contact'
      );
      {
        const state = await phone.expectStorageState('consistency check');
        await phone.setStorageState(
          state.mergeContact(pniContact, {
            identityState: Proto.ContactRecord.IdentityState.DEFAULT,
            whitelisted: true,
            identityKey: pniContact.publicKey.serialize(),
            profileKey: pniContact.profileKey.serialize(),
          })
        );
        await phone.sendFetchStorage({
          timestamp: bootstrap.getTimestamp(),
        });
      }

      const window = await app.getWindow();
      const leftPane = window.locator('#LeftPane');

      debug('opening conversation with the merged contact');
      await leftPane
        .locator(
          `[data-testid="${pniContact.device.aci}"] >> ` +
            `"${pniContact.profileName}"`
        )
        .click();

      await window.locator('.module-conversation-hero').waitFor();

      debug('Send message to merged contact');
      {
        const compositionInput = await app.waitForEnabledComposer();

        await typeIntoInput(compositionInput, 'Hello merged');
        await compositionInput.press('Enter');
      }

      debug('Split contact and mark ACI as unregistered');
      {
        let state = await phone.expectStorageState('consistency check');

        state = state.updateContact(pniContact, {
          pni: undefined,
          serviceE164: undefined,
          unregisteredAtTimestamp: Long.fromNumber(bootstrap.getTimestamp()),
        });

        if (withPniContact) {
          state = state.addContact(
            pniContact,
            {
              identityState: Proto.ContactRecord.IdentityState.DEFAULT,
              whitelisted: true,

              identityKey: pniIdentityKey,

              serviceE164: pniContact.device.number,
              givenName: 'PNI Contact',
            },
            ServiceIdKind.PNI
          );
        }

        state = state.pin(pniContact, ServiceIdKind.PNI);

        await phone.setStorageState(state);
        await phone.sendFetchStorage({
          timestamp: bootstrap.getTimestamp(),
        });
      }

      debug('Wait for pni contact to appear');
      await leftPane
        .locator(`[data-testid="${pniContact.device.pni}"]`)
        .waitFor();

      debug('Verify that the message is in the ACI conversation');
      {
        // Should have both PNI and ACI messages
        await window
          .locator('.module-message__text >> "Hello merged"')
          .waitFor();

        const messages = window.locator('.module-message__text');
        assert.strictEqual(await messages.count(), 1, 'message count');
      }

      debug('Open PNI conversation');
      await leftPane
        .locator(`[data-testid="${pniContact.device.pni}"]`)
        .click();

      debug('Verify absence of messages in the PNI conversation');
      {
        const messages = window.locator('.module-message__text');
        assert.strictEqual(await messages.count(), 0, 'message count');
      }
    });
  }

  it('splits contact when ACI becomes unregistered', async () => {
    const { phone, server } = bootstrap;

    debug(
      'removing both contacts from storage service, adding one combined contact'
    );
    {
      const state = await phone.expectStorageState('consistency check');
      await phone.setStorageState(
        state.mergeContact(pniContact, {
          identityState: Proto.ContactRecord.IdentityState.DEFAULT,
          whitelisted: true,
          identityKey: pniContact.publicKey.serialize(),
          profileKey: pniContact.profileKey.serialize(),
        })
      );
      await phone.sendFetchStorage({
        timestamp: bootstrap.getTimestamp(),
      });
    }

    const window = await app.getWindow();
    const leftPane = window.locator('#LeftPane');

    debug('opening conversation with the merged contact');
    await leftPane
      .locator(
        `[data-testid="${pniContact.device.aci}"] >> ` +
          `"${pniContact.profileName}"`
      )
      .click();

    await window.locator('.module-conversation-hero').waitFor();

    debug('Unregistering ACI');
    server.unregister(pniContact);

    const state = await phone.expectStorageState('initial state');

    debug('Send message to merged contact');
    {
      const compositionInput = await app.waitForEnabledComposer();

      await typeIntoInput(compositionInput, 'Hello merged');
      await compositionInput.press('Enter');
    }

    debug('Verify that contact is split in storage service');
    {
      const newState = await phone.waitForStorageState({
        after: state,
      });

      const { added, removed } = newState.diff(state);
      assert.strictEqual(added.length, 2, 'only two records must be added');
      assert.strictEqual(removed.length, 1, 'only one record must be removed');

      let pniContacts = 0;
      let aciContacts = 0;
      for (const { contact } of added) {
        if (!contact) {
          throw new Error('Invalid record');
        }

        const { aci, serviceE164, pni } = contact;
        if (aci === pniContact.device.aci) {
          aciContacts += 1;
          assert.strictEqual(pni, '');
          assert.strictEqual(serviceE164, '');
        } else if (pni === toUntaggedPni(pniContact.device.pni)) {
          pniContacts += 1;
          assert.strictEqual(aci, '');
          assert.strictEqual(serviceE164, pniContact.device.number);
        }
      }
      assert.strictEqual(aciContacts, 1);
      assert.strictEqual(pniContacts, 1);

      assert.strictEqual(
        removed[0].contact?.pni,
        toUntaggedPni(pniContact.device.pni)
      );
      assert.strictEqual(removed[0].contact?.aci, pniContact.device.aci);

      // Pin PNI so that it appears in the left pane
      const updated = newState.pin(pniContact, ServiceIdKind.PNI);
      await phone.setStorageState(updated);
      await phone.sendFetchStorage({
        timestamp: bootstrap.getTimestamp(),
      });
    }

    debug('Verify that the message is in the ACI conversation');
    {
      // Should have both PNI and ACI messages
      await window.locator('.module-message__text >> "Hello merged"').waitFor();

      const messages = window.locator('.module-message__text');
      assert.strictEqual(await messages.count(), 1, 'message count');
    }

    debug('Open PNI conversation');
    await leftPane.locator(`[data-testid="${pniContact.device.pni}"]`).click();

    debug('Wait for ACI conversation to go away');
    await window
      .locator(`.module-conversation-hero >> ${pniContact.profileName}`)
      .waitFor({
        state: 'hidden',
      });

    debug('Verify absence of messages in the PNI conversation');
    {
      const messages = window.locator('.module-message__text');
      assert.strictEqual(await messages.count(), 0, 'message count');
    }
  });
});