text: /** @format */
  
  /**
   * External dependencies
   */
  
  import { entries, isEqual } from 'lodash';
  import store from 'store';
  import debugFactory from 'debug';
  const debug = debugFactory( 'papo:user' );
  import config from 'config';
  import { stringify } from 'qs';
  // import request from 'superagent';
  import page from 'page';
  
  /**
   * Internal dependencies
   */
  import { isSupportUserSession, boot as supportUserBoot } from 'lib/user/support-user-interop';
  import papo from 'lib/papo';
  import Emitter from 'lib/mixins/emitter';
  import { isE2ETest } from 'lib/e2e';
  import { getComputedAttributes, filterUserObject } from './shared-utils';
  import localforage from 'lib/localforage';
  import { ABTEST_LOCALSTORAGE_KEY } from 'lib/abtest/utility';
  import { Client1 } from 'lib/client1';
  
  // import * as OAuthToken from 'lib/oauth-token';
  
  function User() {
  	if ( ! ( this instanceof User ) ) {
  		return new User();
  	}
  
  	this.initialize();
  }
  
  /**
   * Constants
   */
  const VERIFICATION_POLL_INTERVAL = 15000;
  
  /**
   * Mixins
   */
  Emitter( User.prototype );
  
  /**
   * Initialize the user data depending on the configuration
   **/
  User.prototype.initialize = function() {
  	debug( 'Initializing User' );
  	this.fetching = false;
  	this.initialized = false;
  
  	// this.on( 'change', this.checkVerification.bind( this ) );
  
  	if ( isSupportUserSession() ) {
  		this.data = false;
  
  		supportUserBoot();
  		this.fetch();
  
  		// We're booting into support user mode, skip initialization of the main user.
  		return;
  	}
  
  	// if ( config.isEnabled( 'wpcom-user-bootstrap' ) ) {
  
  	// 	this.data = window.currentUser || false;
  	// 	debug( 'Bootstrapping user data:', this.data );
  
  	// 	// Store the current user in localStorage so that we can use it to determine
  	// 	// if the logged in user has changed when initializing in the future
  	// 	if ( this.data ) {
  	// 		this.handleFetchSuccess( this.data );
  	// 	}
  	// 	this.initialized = true;
  	// 	return;
  	// }
  
  	this.data = store.get( 'papo_user' ) || false;
  
  	debug( 'User bootstrap disabled, checking localStorage:', this.data );
  
  	if ( this.data ) {
  		this.initialized = true;
  		this.emit( 'change' );
  	}
  
  	// Make sure that the user stored in localStorage matches the logged-in user
  	this.fetch();
  };
  
  /**
   * Clear localStorage when we detect that there is a mismatch between the ID
   * of the user stored in localStorage and the current user ID
   **/
  User.prototype.clearStoreIfChanged = function( userId ) {
  	let storedUser;
  	storedUser = store.get( 'papo_user' );
  
  	if ( storedUser && storedUser.id !== userId ) {
  		console.log( 'Clearing localStorage because user changed' );
  		store.clearAll();
  	}
  };
  
  /**
   * Get user data
   */
  User.prototype.get = function() {
  	if ( ! this.data ) {
  		this.fetch();
  	}
  	return this.data;
  };
  
  /**
   * Fetch the current user from WordPress.com via the REST API
   * and stores it in local cache.
   *
   * @uses `wpcom`
   */
  User.prototype.fetch = function() {
  	if ( this.fetching ) {
  		return;
  	}
  
  	// Request current user info
  	this.fetching = true;
  	debug( 'Getting user from api' );
  
  	Client1.getCurrentUser()
  		.then( response => {
  			if ( ! response ) {
  				this.handleFetchFailure( 'error' );
  				return;
  			}
  			const userData = filterUserObject( response );
  			this.handleFetchSuccess( userData );
  			debug( 'User successfully retrieved' );
  		} )
  		.catch( err => {
  			this.handleFetchFailure( 'error' );
  			console.log( err );
  		} );
  };
  
  /**
   * Handles user fetch failure from WordPress.com REST API by updating User's state
   * and emitting a change event.
   *
   * @param {Error} error network response error
   */
  User.prototype.handleFetchFailure = function( error ) {
  	this.clear( () => {
  		page.redirect( '/' );
  	} );
  
  	this.initialized = true;
  	this.emit( 'change' );
  };
  
  /**
   * Handles user fetch success from WordPress.com REST API by persisting the user data
   * in the browser's localStorage. It also changes the User's fetching and initialized states
   * and emits a change event.
   *
   * @param {Object} userData an object containing the user's information.
   */
  User.prototype.handleFetchSuccess = function( userData ) {
  	// Release lock from subsequent fetches
  	this.fetching = false;
  	this.clearStoreIfChanged( userData.id );
  
  	// Store user info in `this.data` and localstorage as `papo_user`
  	store.set( 'papo_user', userData );
  
  	if ( userData.abtests ) {
  		if ( config.isEnabled( 'dev/test-helper' ) || isE2ETest() ) {
  			// This section will preserve the existing localStorage A/B variation values,
  			// This is necessary for the A/B test helper component and e2e tests..
  			const initialVariationsFromStore = store.get( ABTEST_LOCALSTORAGE_KEY );
  			const initialVariations =
  				typeof initialVariationsFromStore === 'object' ? initialVariationsFromStore : undefined;
  			store.set( ABTEST_LOCALSTORAGE_KEY, {
  				...userData.abtests,
  				...initialVariations,
  			} );
  		} else {
  			store.set( ABTEST_LOCALSTORAGE_KEY, userData.abtests );
  		}
  	}
  	this.data = userData;
  	if ( this.settings ) {
  		debug( 'Retaining fetched settings data in new user data' );
  		this.data.settings = this.settings;
  	}
  	this.initialized = true;
  	this.emit( 'change' );
  };
  
  User.prototype.getLanguage = function() {
  	const languages = config( 'languages' );
  	const len = languages.length;
  	let language, index;
  
  	if ( ! this.data.localeSlug ) {
  		return;
  	}
  	for ( index = 0; index < len; index++ ) {
  		if ( this.data.localeSlug === languages[ index ].langSlug ) {
  			language = languages[ index ];
  			break;
  		}
  	}
  
  	return language;
  };
  
  /**
   * Get the URL for a user's avatar (from Gravatar). Uses
   * the short-form query string parameters as options,
   * sets some sane defaults.
   * @param {Object} options Options per https://secure.gravatar.com/site/implement/images/
   */
  User.prototype.getAvatarUrl = function( options ) {
  	const default_options = {
  		s: 80,
  		d: 'mm',
  		r: 'G',
  	};
  	const avatar_URL = this.get().avatar_URL;
  	const avatar = typeof avatar_URL === 'string' ? avatar_URL.split( '?' )[ 0 ] : '';
  
  	options = options || {};
  	options = Object.assign( {}, options, default_options );
  
  	return avatar + '?' + stringify( options );
  };
  
  /**
   * Clear any user data.
   *
   * @param {function}  onClear called when data has been cleared
   */
  User.prototype.clear = function( onClear ) {
  	/**
  	 * Clear internal user data and empty localStorage cache
  	 * to discard any user reference that the application may hold
  	 */
  	this.data = [];
  	delete this.settings;
  	store.clearAll();
  	if ( config.isEnabled( 'persist-redux' ) ) {
  		localforage.clear( onClear );
  	} else if ( onClear ) {
  		onClear();
  	}
  };
  
  /**
   * Sends the user an email with a link to verify their account if they
   * are unverified.
   */
  User.prototype.sendVerificationEmail = function( fn ) {
  	// return wpcom
  	// 	.undocumented()
  	// 	.me()
  	// 	.sendVerificationEmail( fn );
  };
  
  User.prototype.set = function( attributes ) {
  	let changed = false;
  
  	for ( const [ attrName, attrValue ] of entries( attributes ) ) {
  		if ( ! isEqual( attrValue, this.data[ attrName ] ) ) {
  			this.data[ attrName ] = attrValue;
  			changed = true;
  		}
  	}
  
  	if ( changed ) {
  		Object.assign( this.data, getComputedAttributes( this.data ) );
  		store.set( 'papo_user', this.data );
  		this.emit( 'change' );
  	}
  
  	return changed;
  };
  
  User.prototype.decrementSiteCount = function() {
  	const user = this.get();
  	if ( user ) {
  		this.set( {
  			visible_site_count: user.visible_site_count - 1,
  			site_count: user.site_count - 1,
  		} );
  	}
  	this.fetch();
  };
  
  User.prototype.incrementSiteCount = function() {
  	const user = this.get();
  	if ( user ) {
  		return this.set( {
  			visible_site_count: user.visible_site_count + 1,
  			site_count: user.site_count + 1,
  		} );
  	}
  	this.fetch();
  };
  
  /**
   * Called every VERIFICATION_POLL_INTERVAL milliseconds
   * if the email is not verified.
   *
   * May also be called by a localStorage event, on which case
   * the `signal` parameter is set to true.
   *
   * @private
   */
  
  User.prototype.verificationPollerCallback = function( signal ) {
  	// skip server poll if page is hidden or there are no listeners
  	// and this was not triggered by a localStorage signal
  	if ( ( document.hidden || this.listeners( 'verify' ).length === 0 ) && ! signal ) {
  		return;
  	}
  
  	debug( 'Verification: POLL' );
  
  	this.once( 'change', () => {
  		if ( this.get().email_verified ) {
  			// email is verified, stop polling
  			clearInterval( this.verificationPoller );
  			this.verificationPoller = null;
  			debug( 'Verification: VERIFIED' );
  			this.emit( 'verify' );
  		}
  	} );
  
  	this.fetch();
  };
  
  /**
   * Checks if the user email is verified, and starts polling
   * for verification if that's not the case.
   *
   * Also registers a listener to localStorage events.
   *
   * @private
   */
  
  User.prototype.checkVerification = function() {
  	if ( ! this.get() ) {
  		// not loaded, do nothing
  		return;
  	}
  
  	// if ( this.get().email_verified ) {
  	// 	// email already verified, do nothing
  	// 	return;
  	// }
  
  	// if ( this.verificationPoller ) {
  	// 	// already polling, do nothing
  	// 	return;
  	// }
  
  	// this.verificationPoller = setInterval(
  	// 	this.verificationPollerCallback.bind( this ),
  	// 	VERIFICATION_POLL_INTERVAL
  	// );
  
  	// // wait for localStorage event (from other windows)
  	// window.addEventListener( 'storage', e => {
  	// 	if ( e.key === '__email_verified_signal__' && e.newValue ) {
  	// 		debug( 'Verification: RECEIVED SIGNAL' );
  	// 		window.localStorage.removeItem( '__email_verified_signal__' );
  	// 		this.verificationPollerCallback( true );
  	// 	}
  	// } );
  };
  
  /**
   * Writes to local storage, signalling all other windows
   * that the user has been verified.
   *
   * This should be called from the verification successful
   * message, so that all the windows update instantaneously
   */
  
  User.prototype.signalVerification = function() {
  	if ( window.localStorage ) {
  		// use localStorage to signal to other browser windows that the user's email was verified
  		window.localStorage.setItem( '__email_verified_signal__', 1 );
  		debug( 'Verification: SENT SIGNAL' );
  	}
  };
  
  /**
   * Expose `User`
   */
  export default User;
  