Convert the store to using promises

src/App.js

@@ -1,4 +1,4 @@
-import Expensify from './Expensify.js';
+import Expensify from './Expensify';
 import React from 'react';
 
 export default () => <Expensify />;

src/CONFIG.js

@@ -0,0 +1,15 @@
+// TODO: Figure out how to determine prod/dev on mobile, etc.
+const IS_IN_PRODUCTION = false;
+
+export default {
+    PUSHER: {
+        APP_KEY: IS_IN_PRODUCTION ? '268df511a204fbb60884' : 'ac6d22b891daae55283a',
+        AUTH_URL: IS_IN_PRODUCTION ? 'https://www.expensify.com' : 'https://www.expensify.com.dev',
+        CLUSTER: 'mt1',
+    },
+    EXPENSIFY: {
+        PARTNER_NAME: IS_IN_PRODUCTION ? 'chat-expensify-com' : 'android',
+        PARTNER_PASSWORD: IS_IN_PRODUCTION ? 'e21965746fd75f82bb66' : 'c3a9ac418ea3f152aae2',
+        API_ROOT: IS_IN_PRODUCTION ? 'https://www.expensify.com/api?' : 'https://www.expensify.com.dev/api?',
+    }
+};

src/Expensify.js

@@ -1,10 +1,10 @@
-import {init as StoreInit} from './store/Store.js';
-import SignInPage from './page/SignInPage.js';
-import HomePage from './page/HomePage/HomePage.js';
-import * as Store from './store/Store.js';
-import * as ActiveClientManager from './lib/ActiveClientManager.js';
-import {verifyAuthToken} from './store/actions/SessionActions.js';
-import STOREKEYS from './store/STOREKEYS.js';
+import {init as StoreInit} from './store/Store';
+import SignInPage from './page/SignInPage';
+import HomePage from './page/HomePage/HomePage';
+import * as Store from './store/Store';
+import * as ActiveClientManager from './lib/ActiveClientManager';
+import {verifyAuthToken} from './store/actions/SessionActions';
+import STOREKEYS from './store/STOREKEYS';
 import React, {Component} from 'react';
 import {Route, Router, Redirect, Switch} from './lib/Router';
 

src/lib/ActiveClientManager.js

@@ -1,6 +1,6 @@
-import Guid from './Guid.js';
-import * as Store from '../store/Store.js';
-import STOREKEYS from '../store/STOREKEYS.js';
+import Guid from './Guid';
+import * as Store from '../store/Store';
+import STOREKEYS from '../store/STOREKEYS';
 
 const clientID = Guid();
 

src/lib/DateUtils.js

@@ -1,5 +1,5 @@
 import moment from 'moment';
-import Str from './Str.js';
+import Str from './Str';
 
 // Non-Deprecated Methods
 

src/lib/ExpensiMark.js

@@ -1,4 +1,4 @@
-import Str from './Str.js';
+import Str from './Str';
 
 export default class ExpensiMark {
     constructor() {

src/lib/Network.js

@@ -1,5 +1,7 @@
 import * as $ from 'jquery';
-import * as Store from '../store/Store.js';
+import * as Store from '../store/Store';
+import CONFIG from '../CONFIG';
+import STOREKEYS from '../store/STOREKEYS';
 
 let isAppOffline = false;
 
@@ -9,27 +11,29 @@ let isAppOffline = false;
  * @param {string} command
  * @param {mixed} data
  * @param {string} [type]
- * @returns {$.Deferred}
+ * @returns {Promise}
  */
-async function request(command, data, type = 'post') {
-    console.debug(`Making "${command}" ${type} request`);
-    const formData = new FormData();
-    formData.append('authToken', await Store.get('session', 'authToken'));
-    for (const property in data) {
-        formData.append(property, data[property]);
-    }
-    try {
-        let response = await fetch(
-            `https://www.expensify.com.dev/api?command=${command}`,
-            {
-                method: type,
-                body: formData,
-            },
-        );
-        return await response.json();
-    } catch (error) {
-        isAppOffline = true;
-    }
+function request(command, data, type = 'post') {
+    return Store.get(STOREKEYS.SESSION, 'authToken')
+        .then((authToken) => {
+            const formData = new FormData();
+            formData.append('authToken', authToken);
+            _.each(data, (val, key) => {
+                formData.append(key, val);
+            });
+            return formData;
+        })
+        .then((formData) => {
+            return fetch(
+                `${CONFIG.EXPENSIFY.API_ROOT}command=${command}`,
+                {
+                    method: type,
+                    body: formData,
+                },
+            )
+        })
+        .then(response => response.json())
+        .catch(() => isAppOffline = true);
 }
 
 // Holds a queue of all the write requests that need to happen
@@ -39,20 +43,18 @@ const delayedWriteQueue = [];
  * A method to write data to the API in a delayed fashion that supports the app being offline
  *
  * @param {string} command
- * @param {midex} data
- * @returns {$.Deferred}
+ * @param {mixed} data
+ * @returns {Promise}
  */
-function delayedWrite(command, data, cb) {
-    const promise = $.Deferred();
-
-    // Add the write request to a queue of actions to perform
-    delayedWriteQueue.push({
-        command,
-        data,
-        promise,
+function delayedWrite(command, data) {
+    return new Promise((resolve) => {
+        // Add the write request to a queue of actions to perform
+        delayedWriteQueue.push({
+            command,
+            data,
+            callback: resolve,
+        });
     });
-
-    return promise;
 }
 
 /**
@@ -61,27 +63,23 @@ function delayedWrite(command, data, cb) {
 function processWriteQueue() {
     if (isAppOffline) {
         // Make a simple request to see if we're online again
-        request('Get', null, 'get').done(() => {
-            isAppOffline = false;
-        });
+        request('Get', null, 'get')
+            .then(() => isAppOffline = false);
         return;
     }
 
     if (delayedWriteQueue.length === 0) {
         return;
     }
 
-    for (let i = 0; i < delayedWriteQueue.length; i++) {
-        // Take the request object out of the queue and make the request
-        const delayedWriteRequest = delayedWriteQueue.shift();
-
+    _.each(delayedWriteQueue, (delayedWriteRequest) => {
         request(delayedWriteRequest.command, delayedWriteRequest.data)
-            .done(delayedWriteRequest.promise.resolve)
-            .fail(() => {
+            .then(delayedWriteRequest.callback)
+            .catch(() => {
                 // If the request failed, we need to put the request object back into the queue
                 delayedWriteQueue.push(delayedWriteRequest);
             });
-    }
+    });
 }
 
 // TODO: Figure out setInterval

src/lib/PersistentStorage.js

@@ -21,6 +21,27 @@ function get(key) {
         });
 };
 
+/**
+ * Get the data for multiple keys
+ *
+ * @param {string[]} keys
+ * @returns {Promise}
+ */
+function multiGet(keys) {
+    // AsyncStorage returns the data in an array format like:
+    // [ ['@MyApp_user', 'myUserValue'], ['@MyApp_key', 'myKeyValue'] ]
+    // This method will transform the data into a better JSON format like:
+    // {'@MyApp_user': 'myUserValue', '@MyApp_key': 'myKeyValue'}
+    return AsyncStorage.multiGet(keys)
+        .then(arrayOfData => _.reduce(arrayOfData, (finalData, keyValuePair) => ({
+            ...finalData,
+            [keyValuePair[0]]: JSON.parse(keyValuePair[1]),
+        }), {}))
+        .catch((err) => {
+            console.error(`Unable to get item from persistent storage. Keys: ${JSON.stringify(keys)} Error: ${err}`);
+        });
+}
+
 /**
  * Write a key to storage
  *
@@ -32,6 +53,24 @@ function set(key, val) {
     return AsyncStorage.setItem(key, JSON.stringify(val));
 };
 
+/**
+ * Set multiple keys at once
+ *
+ * @param {object} data where the keys and values will be stored
+ * @returns {Promise|Promise<void>|*}
+ */
+function multiSet(data) {
+    // AsyncStorage expenses the data in an array like:
+    // [["@MyApp_user", "value_1"], ["@MyApp_key", "value_2"]]
+    // This method will transform the params from a better JSON format like:
+    // {'@MyApp_user': 'myUserValue', '@MyApp_key': 'myKeyValue'}
+    const keyValuePairs = _.reduce(data, (finalArray, val, key) => ([
+        ...finalArray,
+        [key, JSON.stringify(val)],
+    ]), []);
+    return AsyncStorage.multiSet(keyValuePairs);
+}
+
 /**
  * Empty out the storage (like when the user signs out)
  *
@@ -41,8 +80,22 @@ function clear() {
     return AsyncStorage.clear();
 };
 
+/**
+ * Merges `val` into an existing key. Best used when updating an existing object
+ *
+ * @param {string} key
+ * @param {mixed} val
+ * @returns {Promise}
+ */
+function merge(key, val) {
+    return AsyncStorage.mergeItem(key, val);
+}
+
 export {
     get,
+    multiGet,
     set,
+    multiSet,
+    merge,
     clear,
 };

src/page/SignInPage.js

@@ -12,9 +12,9 @@ import {
     TextInput,
     View,
 } from 'react-native';
-import * as Store from '../store/Store.js';
-import {signIn} from '../store/actions/SessionActions.js';
-import STOREKEYS from '../store/STOREKEYS.js';
+import * as Store from '../store/Store';
+import {signIn} from '../store/actions/SessionActions';
+import STOREKEYS from '../store/STOREKEYS';
 
 export default class App extends Component {
     constructor(props) {

src/store/Store.js

@@ -1,5 +1,5 @@
-import * as _ from 'lodash';
-import * as PersistentStorage from '../lib/PersistentStorage.js';
+import {get as lodashGet} from 'lodash';
+import * as PersistentStorage from '../lib/PersistentStorage';
 
 // Holds all of the callbacks that have registered for a specific key pattern
 const callbackMapping = {};
@@ -54,7 +54,7 @@ function unsubscribe(keyPattern, cb) {
  * @param {mixed} data
  */
 function keyChanged(key, data) {
-    for (const [keyPattern, callbacks] of Object.entries(callbackMapping)) {
+    _.each(callbackMapping, (callbacks, keyPattern) => {
         const regex = RegExp(keyPattern);
 
         // If there is a callback whose regex matches the key that was changed, then the callback for that regex
@@ -65,22 +65,23 @@ function keyChanged(key, data) {
                 callback(data);
             }
         }
-    }
+    });
 }
 
 /**
  * Write a value to our store with the given key
  *
  * @param {string} key
  * @param {mixed} val
+ * @returns {Promise}
  */
 function set(key, val) {
-    // Write the thing to local storage, which will trigger a storage event for any other tabs open on this domain
-    PersistentStorage.set(key, val);
-
     // The storage event doesn't trigger for the current window, so just call keyChanged() manually to mimic
     // the storage event
     keyChanged(key, val);
+
+    // Write the thing to persistent storage, which will trigger a storage event for any other tabs open on this domain
+    return PersistentStorage.set(key, val);
 }
 
 /**
@@ -92,12 +93,56 @@ function set(key, val) {
  *      we are looking for doesn't exist in the object yet
  * @returns {*}
  */
-const get = async (key, extraPath, defaultValue) => {
-    const val = await PersistentStorage.get(key);
-    if (extraPath) {
-        return _.get(val, extraPath, defaultValue);
-    }
-    return val;
+function get(key, extraPath, defaultValue) {
+    return PersistentStorage.get(key)
+        .then((val) => {
+            if (extraPath) {
+                return lodashGet(val, extraPath, defaultValue);
+            }
+            return val;
+        });
 };
 
-export {subscribe, unsubscribe, set, get, init};
+/**
+ * Get multiple keys of data
+ *
+ * @param {string[]} keys
+ * @returns {Promise}
+ */
+function multiGet(keys) {
+    return PersistentStorage.multiGet(keys);
+}
+
+/**
+ * Sets multiple keys and values. Example
+ * Store.multiSet({'key1': 'a', 'key2': 'b'});
+ *
+ * @param {object} data
+ * @returns {Promise}
+ */
+function multiSet(data) {
+    return PersistentStorage.multiSet(data)
+        .then(() => {
+            _.each(data, (val, key) => keyChanged(key, val));
+        });
+}
+
+/**
+ * Clear out all the data in the store
+ *
+ * @returns {Promise}
+ */
+function clear() {
+    return PersistentStorage.clear();
+}
+
+export {
+    subscribe,
+    unsubscribe,
+    set,
+    multiSet,
+    get,
+    multiGet,
+    clear,
+    init
+};