Add boilerplate for redux, redux-persist.

configureStore.js

@@ -0,0 +1,17 @@
+import { createStore } from "redux";
+import { persistStore, persistReducer } from "redux-persist";
+import AsyncStorage from "@react-native-community/async-storage";
+import rootReducer from "./reducers";
+
+const persistConfig = {
+	key: "root",
+	storage: AsyncStorage,
+};
+
+const persistedReducer = persistReducer(persistConfig, rootReducer);
+
+export default () => {
+	const store = createStore(persistedReducer);
+	const persistor = persistStore(store);
+	return { store, persistor };
+};

index.js

@@ -1,12 +1,15 @@
-/**
- * @format
- */
-
 import React from "react";
 import {AppRegistry} from "react-native";
 import App from "./App";
 import {name as appName} from "./app.json";
 import { DarkTheme, Provider } from "react-native-paper";
+import { Provider as ReduxProvider } from "react-redux";
+import { PersistGate } from "redux-persist/integration/react";
+
+import configureStore from "./configureStore";
+const { store, persistor } = configureStore();
+console.log(store);
+console.log(persistor);
 
 const theme = {
 	...DarkTheme,
@@ -20,9 +23,13 @@ const theme = {
 
 export default function Main() {
 	return (
+		<ReduxProvider store={store}>
+			<PersistGate persistor={persistor}>
 				<Provider theme={theme}>
 					<App />
 				</Provider>
+			</PersistGate>
+		</ReduxProvider>
 	);
 }
 

package.json

@@ -10,10 +10,14 @@
     "lint": "eslint ."
   },
   "dependencies": {
+    "@react-native-community/async-storage": "^1.8.1",
     "react": "16.9.0",
     "react-native": "0.61.5",
     "react-native-paper": "^3.6.0",
-    "react-native-vector-icons": "^6.6.0"
+    "react-native-vector-icons": "^6.6.0",
+    "react-redux": "^7.2.0",
+    "redux": "^4.0.5",
+    "redux-persist": "^6.0.0"
   },
   "devDependencies": {
     "@babel/core": "^7.6.2",

reducers/classes.js

@@ -0,0 +1,5 @@
+export default function classes(state) {
+	if (typeof state === "undefined")
+		return [];
+	return state;
+}

reducers/index.js

@@ -0,0 +1,11 @@
+import { combineReducers } from "redux";
+
+import timetable from "./timetable";
+import classes from "./classes";
+
+const rootReducer = combineReducers({
+	timetable,
+	classes
+});
+
+export default rootReducer;

reducers/timetable.js

@@ -0,0 +1,14 @@
+export default function timetable(state) {
+	if (typeof state === "undefined")
+		// Array of days starting with Sunday
+		return [
+			[],
+			[],
+			[],
+			[],
+			[],
+			[],
+			[],
+		];
+	return state;
+}

yarn.lock

@@ -617,7 +617,7 @@
     pirates "^4.0.0"
     source-map-support "^0.5.16"
 
-"@babel/runtime@^7.0.0", "@babel/runtime@^7.6.2", "@babel/runtime@^7.8.4":
+"@babel/runtime@^7.0.0", "@babel/runtime@^7.5.5", "@babel/runtime@^7.6.2", "@babel/runtime@^7.8.4":
   version "7.8.7"
   resolved "https://registry.npmjs.org/@babel/runtime/-/runtime-7.8.7.tgz#8fefce9802db54881ba59f90bb28719b4996324d"
   integrity sha512-+AATMUFppJDw6aiR5NVPHqIQBlV/Pj8wY/EZH+lmvRdUo9xBaz/rF3alAwFJQavvKfeOlPE7oaaDHVbcySbCsg==
@@ -863,6 +863,11 @@
     "@types/yargs" "^15.0.0"
     chalk "^3.0.0"
 
+"@react-native-community/async-storage@^1.8.1":
+  version "1.8.1"
+  resolved "https://registry.npmjs.org/@react-native-community/async-storage/-/async-storage-1.8.1.tgz#c93e69dcf948667b207e409b8039b7edf199159b"
+  integrity sha512-MA1fTp4SB7OOtDmNAwds6jIpiwwty1NIoFboWjEWkoyWW35zIuxlhHxD4joSy21aWEzUVwvv6JJ2hSsP/HTb7A==
+
 "@react-native-community/cli-debugger-ui@^3.0.0":
   version "3.0.0"
   resolved "https://registry.npmjs.org/@react-native-community/cli-debugger-ui/-/cli-debugger-ui-3.0.0.tgz#d01d08d1e5ddc1633d82c7d84d48fff07bd39416"
@@ -5170,6 +5175,17 @@ react-native@0.61.5:
     stacktrace-parser "^0.1.3"
     whatwg-fetch "^3.0.0"
 
+react-redux@^7.2.0:
+  version "7.2.0"
+  resolved "https://registry.npmjs.org/react-redux/-/react-redux-7.2.0.tgz#f970f62192b3981642fec46fd0db18a074fe879d"
+  integrity sha512-EvCAZYGfOLqwV7gh849xy9/pt55rJXPwmYvI4lilPM5rUT/1NxuuN59ipdBksRVSvz0KInbPnp4IfoXJXCqiDA==
+  dependencies:
+    "@babel/runtime" "^7.5.5"
+    hoist-non-react-statics "^3.3.0"
+    loose-envify "^1.4.0"
+    prop-types "^15.7.2"
+    react-is "^16.9.0"
+
 react-refresh@^0.4.0:
   version "0.4.2"
   resolved "https://registry.npmjs.org/react-refresh/-/react-refresh-0.4.2.tgz#54a277a6caaac2803d88f1d6f13c1dcfbd81e334"
@@ -5248,6 +5264,19 @@ realpath-native@^1.1.0:
   dependencies:
     util.promisify "^1.0.0"
 
+redux-persist@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.npmjs.org/redux-persist/-/redux-persist-6.0.0.tgz#b4d2972f9859597c130d40d4b146fecdab51b3a8"
+  integrity sha512-71LLMbUq2r02ng2We9S215LtPu3fY0KgaGE0k8WRgl6RkqxtGfl7HUozz1Dftwsb0D/5mZ8dwAaPbtnzfvbEwQ==
+
+redux@^4.0.5:
+  version "4.0.5"
+  resolved "https://registry.npmjs.org/redux/-/redux-4.0.5.tgz#4db5de5816e17891de8a80c424232d06f051d93f"
+  integrity sha512-VSz1uMAH24DM6MF72vcojpYPtrTUu3ByVWfPL1nPfVRb5mZVTve5GnNCUV53QM/BZ66xfWrm0CTWoM+Xlz8V1w==
+  dependencies:
+    loose-envify "^1.4.0"
+    symbol-observable "^1.2.0"
+
 regenerate-unicode-properties@^8.1.0:
   version "8.1.0"
   resolved "https://registry.npmjs.org/regenerate-unicode-properties/-/regenerate-unicode-properties-8.1.0.tgz#ef51e0f0ea4ad424b77bf7cb41f3e015c70a3f0e"
@@ -5997,6 +6026,11 @@ symbol-observable@1.0.1:
   resolved "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.0.1.tgz#8340fc4702c3122df5d22288f88283f513d3fdd4"
   integrity sha1-g0D8RwLDEi310iKI+IKD9RPT/dQ=
 
+symbol-observable@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.2.0.tgz#c22688aed4eab3cdc2dfeacbb561660560a00804"
+  integrity sha512-e900nM8RRtGhlV36KGEU9k65K3mPb1WV70OdjfxlG2EAuM1noi/E/BaW/uMhL7bPEssK8QV57vN3esixjUvcXQ==
+
 symbol-tree@^3.2.2:
   version "3.2.4"
   resolved "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.4.tgz#430637d248ba77e078883951fb9aa0eed7c63fa2"