package org.thoughtcrime.securesms.keyvalue;

import androidx.annotation.NonNull;
import androidx.annotation.VisibleForTesting;
import androidx.preference.PreferenceDataStore;

import org.thoughtcrime.securesms.database.KeyValueDatabase;
import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
import org.thoughtcrime.securesms.util.SignalUncaughtExceptionHandler;

import java.util.ArrayList;
import java.util.List;

/**
 * Simple, encrypted key-value store.
 */
public final class SignalStore {

  private KeyValueStore store;

  private final AccountValues             accountValues;
  private final KbsValues                 kbsValues;
  private final RegistrationValues        registrationValues;
  private final PinValues                 pinValues;
  private final RemoteConfigValues        remoteConfigValues;
  private final StorageServiceValues      storageServiceValues;
  private final UiHints                   uiHints;
  private final TooltipValues             tooltipValues;
  private final MiscellaneousValues       misc;
  private final InternalValues            internalValues;
  private final EmojiValues               emojiValues;
  private final SettingsValues            settingsValues;
  private final CertificateValues         certificateValues;
  private final PhoneNumberPrivacyValues  phoneNumberPrivacyValues;
  private final OnboardingValues          onboardingValues;
  private final WallpaperValues           wallpaperValues;
  private final PaymentsValues            paymentsValues;
  private final DonationsValues           donationsValues;
  private final ProxyValues               proxyValues;
  private final RateLimitValues           rateLimitValues;
  private final ChatColorsValues          chatColorsValues;
  private final ImageEditorValues         imageEditorValues;
  private final NotificationProfileValues notificationProfileValues;
  private final ReleaseChannelValues      releaseChannelValues;
  private final StoryValues               storyValues;

  private final PlainTextSharedPrefsDataStore plainTextValues;

  private static volatile SignalStore instance;

  private static @NonNull SignalStore getInstance() {
    if (instance == null) {
      synchronized (SignalStore.class) {
        if (instance == null) {
          instance = new SignalStore(new KeyValueStore(KeyValueDatabase.getInstance(ApplicationDependencies.getApplication())));
        }
      }
    }

    return instance;
  }

  private SignalStore(@NonNull KeyValueStore store) {
    this.store                     = store;
    this.accountValues             = new AccountValues(store);
    this.kbsValues                 = new KbsValues(store);
    this.registrationValues        = new RegistrationValues(store);
    this.pinValues                 = new PinValues(store);
    this.remoteConfigValues        = new RemoteConfigValues(store);
    this.storageServiceValues      = new StorageServiceValues(store);
    this.uiHints                   = new UiHints(store);
    this.tooltipValues             = new TooltipValues(store);
    this.misc                      = new MiscellaneousValues(store);
    this.internalValues            = new InternalValues(store);
    this.emojiValues               = new EmojiValues(store);
    this.settingsValues            = new SettingsValues(store);
    this.certificateValues         = new CertificateValues(store);
    this.phoneNumberPrivacyValues  = new PhoneNumberPrivacyValues(store);
    this.onboardingValues          = new OnboardingValues(store);
    this.wallpaperValues           = new WallpaperValues(store);
    this.paymentsValues            = new PaymentsValues(store);
    this.donationsValues           = new DonationsValues(store);
    this.proxyValues               = new ProxyValues(store);
    this.rateLimitValues           = new RateLimitValues(store);
    this.chatColorsValues          = new ChatColorsValues(store);
    this.imageEditorValues         = new ImageEditorValues(store);
    this.notificationProfileValues = new NotificationProfileValues(store);
    this.releaseChannelValues      = new ReleaseChannelValues(store);
    this.storyValues               = new StoryValues(store);
    this.plainTextValues           = new PlainTextSharedPrefsDataStore(ApplicationDependencies.getApplication());
  }

  public static void onFirstEverAppLaunch() {
    account().onFirstEverAppLaunch();
    kbsValues().onFirstEverAppLaunch();
    registrationValues().onFirstEverAppLaunch();
    pinValues().onFirstEverAppLaunch();
    remoteConfigValues().onFirstEverAppLaunch();
    storageService().onFirstEverAppLaunch();
    uiHints().onFirstEverAppLaunch();
    tooltips().onFirstEverAppLaunch();
    misc().onFirstEverAppLaunch();
    internalValues().onFirstEverAppLaunch();
    emojiValues().onFirstEverAppLaunch();
    settings().onFirstEverAppLaunch();
    certificateValues().onFirstEverAppLaunch();
    phoneNumberPrivacy().onFirstEverAppLaunch();
    onboarding().onFirstEverAppLaunch();
    wallpaper().onFirstEverAppLaunch();
    paymentsValues().onFirstEverAppLaunch();
    donationsValues().onFirstEverAppLaunch();
    proxy().onFirstEverAppLaunch();
    rateLimit().onFirstEverAppLaunch();
    chatColorsValues().onFirstEverAppLaunch();
    imageEditorValues().onFirstEverAppLaunch();
    notificationProfileValues().onFirstEverAppLaunch();
    releaseChannelValues().onFirstEverAppLaunch();
    storyValues().onFirstEverAppLaunch();
  }

  public static List<String> getKeysToIncludeInBackup() {
    List<String> keys = new ArrayList<>();
    keys.addAll(account().getKeysToIncludeInBackup());
    keys.addAll(kbsValues().getKeysToIncludeInBackup());
    keys.addAll(registrationValues().getKeysToIncludeInBackup());
    keys.addAll(pinValues().getKeysToIncludeInBackup());
    keys.addAll(remoteConfigValues().getKeysToIncludeInBackup());
    keys.addAll(storageService().getKeysToIncludeInBackup());
    keys.addAll(uiHints().getKeysToIncludeInBackup());
    keys.addAll(tooltips().getKeysToIncludeInBackup());
    keys.addAll(misc().getKeysToIncludeInBackup());
    keys.addAll(internalValues().getKeysToIncludeInBackup());
    keys.addAll(emojiValues().getKeysToIncludeInBackup());
    keys.addAll(settings().getKeysToIncludeInBackup());
    keys.addAll(certificateValues().getKeysToIncludeInBackup());
    keys.addAll(phoneNumberPrivacy().getKeysToIncludeInBackup());
    keys.addAll(onboarding().getKeysToIncludeInBackup());
    keys.addAll(wallpaper().getKeysToIncludeInBackup());
    keys.addAll(paymentsValues().getKeysToIncludeInBackup());
    keys.addAll(donationsValues().getKeysToIncludeInBackup());
    keys.addAll(proxy().getKeysToIncludeInBackup());
    keys.addAll(rateLimit().getKeysToIncludeInBackup());
    keys.addAll(chatColorsValues().getKeysToIncludeInBackup());
    keys.addAll(imageEditorValues().getKeysToIncludeInBackup());
    keys.addAll(notificationProfileValues().getKeysToIncludeInBackup());
    keys.addAll(releaseChannelValues().getKeysToIncludeInBackup());
    keys.addAll(storyValues().getKeysToIncludeInBackup());
    return keys;
  }

  /**
   * Forces the store to re-fetch all of it's data from the database.
   * Should only be used for testing!
   */
  @VisibleForTesting
  public static void resetCache() {
    getInstance().store.resetCache();
  }

  /**
   * Restoring a backup changes the underlying disk values, so the cache needs to be reset.
   */
  public static void onPostBackupRestore() {
    getInstance().store.resetCache();
  }

  public static @NonNull AccountValues account() {
    return getInstance().accountValues;
  }

  public static @NonNull KbsValues kbsValues() {
    return getInstance().kbsValues;
  }

  public static @NonNull RegistrationValues registrationValues() {
    return getInstance().registrationValues;
  }

  public static @NonNull PinValues pinValues() {
    return getInstance().pinValues;
  }

  public static @NonNull RemoteConfigValues remoteConfigValues() {
    return getInstance().remoteConfigValues;
  }

  public static @NonNull StorageServiceValues storageService() {
    return getInstance().storageServiceValues;
  }

  public static @NonNull UiHints uiHints() {
    return getInstance().uiHints;
  }

  public static @NonNull TooltipValues tooltips() {
    return getInstance().tooltipValues;
  }

  public static @NonNull MiscellaneousValues misc() {
    return getInstance().misc;
  }

  public static @NonNull InternalValues internalValues() {
    return getInstance().internalValues;
  }

  public static @NonNull EmojiValues emojiValues() {
    return getInstance().emojiValues;
  }

  public static @NonNull SettingsValues settings() {
    return getInstance().settingsValues;
  }

  public static @NonNull CertificateValues certificateValues() {
    return getInstance().certificateValues;
  }

  public static @NonNull PhoneNumberPrivacyValues phoneNumberPrivacy() {
    return getInstance().phoneNumberPrivacyValues;
  }

  public static @NonNull OnboardingValues onboarding() {
    return getInstance().onboardingValues;
  }

  public static @NonNull WallpaperValues wallpaper() {
    return getInstance().wallpaperValues;
  }

  public static @NonNull PaymentsValues paymentsValues() {
    return getInstance().paymentsValues;
  }

  public static @NonNull DonationsValues donationsValues() {
    return getInstance().donationsValues;
  }

  public static @NonNull ProxyValues proxy() {
    return getInstance().proxyValues;
  }

  public static @NonNull RateLimitValues rateLimit() {
    return getInstance().rateLimitValues;
  }

  public static @NonNull ChatColorsValues chatColorsValues() {
    return getInstance().chatColorsValues;
  }

  public static @NonNull ImageEditorValues imageEditorValues() {
    return getInstance().imageEditorValues;
  }

  public static @NonNull NotificationProfileValues notificationProfileValues() {
    return getInstance().notificationProfileValues;
  }

  public static @NonNull ReleaseChannelValues releaseChannelValues() {
    return getInstance().releaseChannelValues;
  }

  public static @NonNull StoryValues storyValues() {
    return getInstance().storyValues;
  }

  public static @NonNull GroupsV2AuthorizationSignalStoreCache groupsV2AciAuthorizationCache() {
    return GroupsV2AuthorizationSignalStoreCache.createAciCache(getStore());
  }

  public static @NonNull PreferenceDataStore getPreferenceDataStore() {
    return new SignalPreferenceDataStore(getStore());
  }

  public static @NonNull PlainTextSharedPrefsDataStore plaintext() {
    return getInstance().plainTextValues;
  }

  /**
   * Ensures any pending writes are finished. Only intended to be called by
   * {@link SignalUncaughtExceptionHandler}.
   */
  public static void blockUntilAllWritesFinished() {
    getStore().blockUntilAllWritesFinished();
  }

  private static @NonNull KeyValueStore getStore() {
    return getInstance().store;
  }

  /**
   * Allows you to set a custom KeyValueStore to read from. Only for testing!
   */
  @VisibleForTesting
  public static void inject(@NonNull KeyValueStore store) {
    instance = new SignalStore(store);
  }
}