/* eslint-disable import/no-duplicates */
/*
 * Copyright (c) 2016-present Invertase Limited & Contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this library except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

import type { ReactNativeFirebaseModule } from '@react-native-firebase/app-types/index.js.flow';

/**
 * A pseudo-enum for usage with ConfigSettingsRead.lastFetchStatus to determine the last fetch status.
 *
 * #### Example
 *
 * ```js
 * firebase.remoteConfig.LastFetchStatus;
 * ```
 */
export interface LastFetchStatus {
  /**
   * A value indicating that the last fetch was successful.
   *
   * ```js
   * firebase.remoteConfig.LastFetchStatus.SUCCESS;
   * ```
   */
  SUCCESS: 'success';

  /**
   * A value indicating that the last fetch failed.
   *
   * ```js
   * firebase.remoteConfig.LastFetchStatus.FAILURE;
   * ```
   */
  FAILURE: 'failure';

  /**
   * A value indicating that the last fetch was throttled.
   *
   * This usually occurs when calling fetch often with a low expiration duration.
   *
   * ```js
   * firebase.remoteConfig.LastFetchStatus.THROTTLED;
   * ```
   */
  THROTTLED: 'throttled';

  /**
   * A value indicating that no fetches have occurred yet.
   *
   * This usually means you've not called fetch yet.
   *
   * ```js
   * firebase.remoteConfig.LastFetchStatus.NO_FETCH_YET;
   * ```
   */
  NO_FETCH_YET: 'no_fetch_yet';
}

/**
 * A pseudo-enum for usage with ConfigValue.source to determine the value source.
 *
 * #### Example
 *
 * ```js
 * firebase.remoteConfig.ValueSource;
 * ```
 */
export interface ValueSource {
  /**
   * If the value was retrieved from the server.
   *
   * ```js
   * firebase.remoteConfig.ValueSource.REMOTE;
   * ```
   */
  REMOTE: 'remote';
  /**
   * If the value was set as a default value.
   *
   * ```js
   * firebase.remoteConfig.ValueSource.DEFAULT;
   * ```
   */
  DEFAULT: 'default';
  /**
   * If no value was found and a static default value was returned instead.
   *
   * ```js
   * firebase.remoteConfig.ValueSource.STATIC;
   * ```
   */
  STATIC: 'static';
}

/**
 * Firebase Remote RemoteConfig statics.
 *
 * ```js
 * firebase.remoteConfig;
 * ```
 */
export interface Statics {
  /**
   * A pseudo-enum for usage with ConfigValue.source to determine the value source.
   *
   * #### Example
   *
   * ```js
   * firebase.remoteConfig.ValueSource;
   * ```
   */
  ValueSource: ValueSource;

  /**
   * A pseudo-enum for usage with `firebase.remoteConfig().lastFetchStatus` to determine the last fetch status.
   *
   * #### Example
   *
   * ```js
   * firebase.remoteConfig.LastFetchStatus;
   * ```
   */
  LastFetchStatus: LastFetchStatus;
}

/**
 * An Interface representing a Remote RemoteConfig value.
 */
export interface ConfigValue {
  /**
   * Where the value was retrieved from.
   *
   * - `remote`:  If the value was retrieved from the server.
   * - `default`: If the value was set as a default value.
   * - `static`: If no value was found and a static default value was returned instead.
   *
   * See the `ValueSource` statics definition.
   *
   * #### Example
   *
   * ```js
   * const configValue = firebase.remoteConfig().getValue('beta_enabled');
   * console.log('Value source: ', configValue.source);
   * ```
   */
  source: 'remote' | 'default' | 'static';

  /**
   * The returned value.
   *
   * #### Example
   *
   * ```js
   * const configValue = firebase.remoteConfig().getValue('beta_enabled');
   * console.log('Value: ', configValue.value);
   * ```
   */
  value: undefined | number | boolean | string;
}

/**
 * An Interface representing multiple RemoteConfig Values.
 *
 * #### Example
 *
 * ```js
 * const values = firebase.remoteConfig().getAll();
 * ```
 */
export interface ConfigValues {
  [key: string]: ConfigValue;
}

/**
 * An Interface representing settable config settings.
 *
 * #### Example
 *
 * The example below makes use of the React Native `__DEV__` global JavaScript variable which
 * is exposed.
 *
 * ```js
 * await firebase.remoteConfig().setConfigSettings({
 *   isDeveloperModeEnabled: __DEV__,
 * });
 * ```
 */
export interface ConfigSettings {
  /**
   * If enabled, default behaviour such as caching is disabled for a better debugging
   * experience.
   */
  isDeveloperModeEnabled: boolean;
}

/**
 * An Interface representing a RemoteConfig Defaults object.
 *
 * #### Example
 *
 * ```js
 * await firebase.remoteConfig().setDefaults({
 *   experiment_enabled: false,
 * });
 * ```
 */
export interface ConfigDefaults {
  [key: string]: number | string | boolean;
}

/**
 * The Firebase Remote RemoteConfig service interface.
 *
 * > This module is available for the default app only.
 *
 * #### Example
 *
 * Get the Remote RemoteConfig service for the default app:
 *
 * ```js
 * const defaultAppRemoteConfig = firebase.remoteConfig();
 * ```
 */
export interface Module extends ReactNativeFirebaseModule {
  /**
   * The number of milliseconds since the last Remote RemoteConfig fetch was performed.
   */
  lastFetchTime: number;
  /**
   * Whether developer mode is enabled. This is set manually via {@link config#setConfigSettings}
   */
  isDeveloperModeEnabled: boolean;
  /**
   * The status of the latest Remote RemoteConfig fetch action.
   *
   * See the `LastFetchStatus` statics definition.
   */
  lastFetchStatus: 'success' | 'failure' | 'no_fetch_yet' | 'throttled';

  /**
   * Moves fetched data to the apps active config.
   * Resolves with a boolean value of whether the fetched config was moved successfully.
   *
   * #### Example
   *
   * ```js
   * // Fetch values
   * await firebase.remoteConfig().fetch();
   * const activated = await firebase.remoteConfig().activate();
   *
   * if (activated) {
   *  console.log('Fetched values successfully activated.');
   * } else {
   *   console.log('Fetched values failed to activate.');
   * }
   * ```
   */
  activate(): Promise<boolean>;

  /**
   * Fetches the remote config data from Firebase, as defined in the dashboard. If duration is defined (seconds), data will be locally cached for this duration.
   *
   * #### Example
   *
   * ```js
   * // Fetch and cache for 5 minutes
   * await firebase.remoteConfig().fetch(300);
   * ```
   *
   * @param expirationDurationSeconds Duration in seconds to cache the data for. To skip cache, use a duration of 0.
   */
  fetch(expirationDurationSeconds?: number): Promise<null>;

  /**
   * Fetches the remote config data from Firebase, as defined in the dashboard. If duration is defined (seconds), data will be locally cached for this duration.
   *
   * Once fetching is complete this method immediately calls activate and returns a boolean value of the activation status.
   *
   * #### Example
   *
   * ```js
   * // Fetch, cache for 5 minutes and activate
   * const activated = await firebase.remoteConfig().fetchAndActivate(300);
   *
   * if (activated) {
   *  console.log('Fetched values successfully activated.');
   * } else {
   *   console.log('Fetched values failed to activate.');
   * }
   * ```
   *
   * @param expirationDurationSeconds Duration in seconds to cache the data for. To skip cache use a duration of 0.
   */
  fetchAndActivate(expirationDurationSeconds?: number): Promise<boolean>;

  /**
   * Returns all available config values.
   *
   * #### Example
   *
   * ```js
   * const values = firebase.remoteConfig().getAll();
   *
   * Object.entries(values).forEach(($) => {
   *   const [key, entry] = $;
   *   console.log('Key: ', key);
   *   console.log('Source: ', entry.source);
   *   console.log('Value: ', entry.value);
   * });
   * ```
   *
   */
  getAll(): ConfigValues;

  /**
   * Gets a ConfigValue by key.
   *
   * #### Example
   *
   * ```js
   * const configValue = firebase.remoteConfig().getValue('experiment');
   * console.log('Source: ', configValue.source);
   * console.log('Value: ', configValue.value);
   * ```
   *
   * @param key A key used to retrieve a specific value.
   */
  getValue(key: string): ConfigValue;

  /**
   * Set the Remote RemoteConfig settings, specifically the `isDeveloperModeEnabled` flag.
   *
   * #### Example
   *
   * ```js
   * await firebase.remoteConfig().setConfigSettings({
   *   isDeveloperModeEnabled: __DEV__,
   * });
   * ```
   *
   * @param configSettings A ConfigSettingsWrite instance used to set Remote RemoteConfig settings.
   */
  setConfigSettings(configSettings: ConfigSettings): Promise<void>;

  /**
   * Sets default values for the app to use when accessing values.
   * Any data fetched and activated will override any default values. Any values in the defaults but not on Firebase will be untouched.
   *
   * #### Example
   *
   * ```js
   * await firebase.remoteConfig().setDefaults({
   *   experiment_enabled: false,
   * });
   * ```
   *
   * @param defaults A ConfigDefaults instance used to set default values.
   */
  setDefaults(defaults: ConfigDefaults): Promise<null>;

  /**
   * Sets the default values from a resource file.
   * On iOS this is a plist file and on Android this is an XML defaultsMap file.
   *
   * ```js
   *  // TODO @ehesp
   * ```
   *
   * @param resourceName The plist/xml file name with no extension.
   */
  setDefaultsFromResource(resourceName: string): Promise<null>;
}

declare module '@react-native-firebase/remote-config' {
  import type {
    ReactNativeFirebaseNamespace,
    ReactNativeFirebaseModuleAndStatics,
  } from '@react-native-firebase/app-types/index.js.flow';
  /**
   * @example
   * ```js
   * import { firebase } from '@react-native-firebase/remote-config';
   * firebase.remoteConfig().X(...);
   * ```
   */
  declare export var firebase: {} & ReactNativeFirebaseNamespace;

  /**
   * @example
   * ```js
   * import remoteConfig from '@react-native-firebase/remote-config';
   * remoteConfig().X(...);
   * ```
   */
  declare export default ReactNativeFirebaseModuleAndStatics<Module, Statics>;
}

/**
 * Attach namespace to `firebase.` and `FirebaseApp.`.
 */
declare module '@react-native-firebase/app-types' {
  import type { ReactNativeFirebaseModuleAndStatics } from '@react-native-firebase/app-types/index.js.flow';

  declare interface ReactNativeFirebaseNamespace {
    /**
     * RemoteConfig
     */
    remoteConfig: ReactNativeFirebaseModuleAndStatics<Module, Statics>;
  }

  declare interface FirebaseApp {
    /**
     * RemoteConfig
     */
    remoteConfig(): Module;
  }
}