Add loading UI, add view transition animations.

Framework is in place to run initial load on app startup. These routines will be called
in Application's initLoad function. The loader will run for a min of 800ms to prevent it
from looking odd on the UI. This can be reduced/changed later if this turns out to not be
a concern.

Added an app reducer to redux. The loading state was initially going to be there. On further
inspection, it seemed better to have it as a state variable in the Application component. It
remains in the store for now as an example. The pattern is valid and will be used for other
proprties.

Added animations for view transitions. On v1, this was done with jquery. Here, we are using
react-transition-group. Got it working with a clever trick to store a workingView and use that
for rendering. When the currentView is changed by the redux store, the fade out transition will
start. Once the fade out completes, the workingView reference will be updated to the new view,
triggering the fade in.

build.js

@@ -57,7 +57,8 @@ builder.build({
             '!{dist,.gitignore,.vscode,docs,dev-app-update.yml,.travis.yml,.nvmrc,.eslintrc.json,build.js}'
         ],
         extraResources: [
-            'libraries'
+            'libraries',
+            'static'
         ],
         asar: true
     }

package-lock.json

@@ -1686,6 +1686,12 @@
         "@types/node": "*"
       }
     },
+    "@types/lodash": {
+      "version": "4.14.152",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.152.tgz",
+      "integrity": "sha512-Vwf9YF2x1GE3WNeUMjT5bTHa2DqgUo87ocdgTScupY2JclZ5Nn7W2RLM/N0+oreexUk8uaVugR81NnTY/jNNXg==",
+      "dev": true
+    },
     "@types/minimatch": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.3.tgz",
@@ -1740,6 +1746,15 @@
         "redux": "^4.0.0"
       }
     },
+    "@types/react-transition-group": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/@types/react-transition-group/-/react-transition-group-4.4.0.tgz",
+      "integrity": "sha512-/QfLHGpu+2fQOqQaXh8MG9q03bFENooTb/it4jr5kKaZlDQfWvjqWZg48AwzPVMBHlRuTRAY7hRHCEOXz5kV6w==",
+      "dev": true,
+      "requires": {
+        "@types/react": "*"
+      }
+    },
     "@types/request": {
       "version": "2.48.5",
       "resolved": "https://registry.npmjs.org/@types/request/-/request-2.48.5.tgz",
@@ -4464,6 +4479,33 @@
         "utila": "~0.4"
       }
     },
+    "dom-helpers": {
+      "version": "5.1.4",
+      "resolved": "https://registry.npmjs.org/dom-helpers/-/dom-helpers-5.1.4.tgz",
+      "integrity": "sha512-TjMyeVUvNEnOnhzs6uAn9Ya47GmMo3qq7m+Lr/3ON0Rs5kHvb8I+SQYjLUSYn7qhEm0QjW0yrBkvz9yOrwwz1A==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "^7.8.7",
+        "csstype": "^2.6.7"
+      },
+      "dependencies": {
+        "@babel/runtime": {
+          "version": "7.9.6",
+          "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.9.6.tgz",
+          "integrity": "sha512-64AF1xY3OAkFHqOb9s4jpgk1Mm5vDZ4L3acHvAml+53nO1XbXLuDodsVpO4OIUsmemlUHMxNdYMNJmsvOwLrvQ==",
+          "dev": true,
+          "requires": {
+            "regenerator-runtime": "^0.13.4"
+          }
+        },
+        "regenerator-runtime": {
+          "version": "0.13.5",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.5.tgz",
+          "integrity": "sha512-ZS5w8CpKFinUzOwW3c83oPeVXoNsrLsaCoLtJvAClH135j/R77RuymhiSErhm2lKcwSCIpmvIWSbDkIfAqKQlA==",
+          "dev": true
+        }
+      }
+    },
     "dom-serializer": {
       "version": "0.2.2",
       "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-0.2.2.tgz",
@@ -10831,6 +10873,18 @@
         "react-is": "^16.9.0"
       }
     },
+    "react-transition-group": {
+      "version": "4.4.1",
+      "resolved": "https://registry.npmjs.org/react-transition-group/-/react-transition-group-4.4.1.tgz",
+      "integrity": "sha512-Djqr7OQ2aPUiYurhPalTrVy9ddmFCCzwhqQmtN+J3+3DzLO209Fdr70QrN8Z3DsglWql6iY1lDWAfpFiBtuKGw==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "^7.5.5",
+        "dom-helpers": "^5.0.1",
+        "loose-envify": "^1.4.0",
+        "prop-types": "^15.6.2"
+      }
+    },
     "read-config-file": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/read-config-file/-/read-config-file-6.0.0.tgz",

package.json

@@ -37,6 +37,7 @@
     "github-syntax-dark": "^0.5.0",
     "got": "^11.1.4",
     "jquery": "^3.5.1",
+    "lodash": "^4.17.15",
     "moment": "^2.26.0",
     "request": "^2.88.2",
     "semver": "^7.3.2",
@@ -53,11 +54,13 @@
     "@types/discord-rpc": "^3.0.4",
     "@types/fs-extra": "^9.0.1",
     "@types/jquery": "^3.3.38",
+    "@types/lodash": "^4.14.152",
     "@types/mocha": "^7.0.2",
     "@types/node": "^12.12.42",
     "@types/react": "^16.9.35",
     "@types/react-dom": "^16.9.8",
     "@types/react-redux": "^7.1.9",
+    "@types/react-transition-group": "^4.4.0",
     "@types/request": "^2.48.5",
     "@types/tar-fs": "^2.0.0",
     "@types/triple-beam": "^1.3.1",
@@ -79,6 +82,7 @@
     "react-dom": "^16.13.0",
     "react-hot-loader": "^4.12.21",
     "react-redux": "^7.2.0",
+    "react-transition-group": "^4.4.1",
     "redux": "^4.0.5",
     "rimraf": "^3.0.2",
     "ts-node": "^8.10.1",

src/renderer/components/Application.css

@@ -2,3 +2,37 @@
     height: calc(100vh - 22px);
     background: linear-gradient(to top, rgba(0, 0, 0, 0.75) 0%, rgba(0, 0, 0, 0) 100%);
 }
+
+.loader-enter {
+    opacity: 0;
+    transform: scale(0.9);
+}
+
+.loader-enter-active {
+    opacity: 1;
+    transform: translateX(0);
+    transition: opacity 300ms, transform 300ms;
+}
+.loader-exit {
+    opacity: 1;
+}
+.loader-exit-active {
+    opacity: 0;
+    transform: scale(0.9);
+    transition: opacity 300ms, transform 300ms;
+}
+
+.appWrapper-enter {
+    opacity: 0;
+}
+.appWrapper-enter-active {
+    opacity: 1;
+    transition: opacity 500ms, transform 500ms;
+}
+.appWrapper-exit {
+    opacity: 1;
+}
+.appWrapper-exit-active {
+    opacity: 0;
+    transition: opacity 500ms, transform 500ms;
+}

src/renderer/components/Application.tsx

@@ -6,18 +6,61 @@ import { connect } from 'react-redux'
 import { View } from '../meta/Views'
 import Landing from './landing/Landing'
 import Login from './login/Login'
+import Loader from './loader/Loader'
 import Settings from './settings/Settings'
 
 import './Application.css'
+import { StoreType } from '../redux/store'
+import { CSSTransition } from 'react-transition-group'
+import { setCurrentView } from '../redux/actions/viewActions'
+import { throttle } from 'lodash'
+import { readdir } from 'fs-extra'
+import { join } from 'path'
 
-type ApplicationProps = {
+declare const __static: string
+
+function setBackground(id: number) {
+    import(`../../../static/images/backgrounds/${id}.jpg`).then(mdl => {
+        document.body.style.backgroundImage = `url('${mdl.default}')`
+    })
+}
+
+interface ApplicationProps {
     currentView: View
 }
 
-class Application extends React.Component<ApplicationProps> {
+interface ApplicationState {
+    loading: boolean
+    showMain: boolean
+    renderMain: boolean
+    workingView: View
+}
+
+const mapState = (state: StoreType) => {
+    return {
+        currentView: state.currentView
+    }
+}
+const mapDispatch = {
+    setView: (x: View) => setCurrentView(x)
+}
+
+class Application extends React.Component<ApplicationProps & typeof mapDispatch, ApplicationState> {
+
+    private bkid!: number
+
+    constructor(props: ApplicationProps & typeof mapDispatch) {
+        super(props)
+        this.state = {
+            loading: true,
+            showMain: false,
+            renderMain: false,
+            workingView: props.currentView
+        }
+    }
 
     getViewElement(): JSX.Element {
-        switch(this.props.currentView) {
+        switch(this.state.workingView) {
             case View.WELCOME:
                 return <>
                     <Welcome />
@@ -38,21 +81,86 @@ class Application extends React.Component<ApplicationProps> {
         }
     }
 
-    render() {
+    private updateWorkingView = throttle(() => {
+        this.setState({
+            ...this.state,
+            workingView: this.props.currentView
+        })
+        
+    }, 200)
+
+    private showMain = (): void => {
+        setBackground(this.bkid)
+        this.setState({
+            ...this.state,
+            showMain: true
+        })
+    }
+
+    private initLoad = async (): Promise<void> => {
+        if(this.state.loading) {
+            const MIN_LOAD = 800
+            const start = Date.now()
+            this.bkid = Math.floor((Math.random() * (await readdir(join(__static, 'images', 'backgrounds'))).length))
+            const endLoad = () => {
+                this.setState({
+                    ...this.state,
+                    loading: false
+                })
+                // TODO temp
+                setTimeout(() => {
+                    this.props.setView(View.WELCOME)
+                }, 5000)
+            }
+            const diff = Date.now() - start
+            if(diff < MIN_LOAD) {
+                setTimeout(endLoad, MIN_LOAD-diff)
+            } else {
+                endLoad()
+            }
+        }
+    }
+
+    render(): JSX.Element {
         return (
             <>
                 <Frame />
+                <CSSTransition
+                    in={this.state.showMain}
+                    appear={true}
+                    timeout={500}
+                    classNames="appWrapper"
+                    unmountOnExit
+                >
                     <div className="appWrapper">
+                        <CSSTransition
+                            in={this.props.currentView == this.state.workingView}
+                            appear={true}
+                            timeout={500}
+                            classNames="appWrapper"
+                            unmountOnExit
+                            onExited={this.updateWorkingView}
+                        >
                             {this.getViewElement()}
+                        </CSSTransition>
+                        
                     </div>
+                </CSSTransition>
+                <CSSTransition
+                    in={this.state.loading}
+                    appear={true}
+                    timeout={300}
+                    classNames="loader"
+                    unmountOnExit
+                    onEnter={this.initLoad}
+                    onExited={this.showMain}
+                >
+                    <Loader />
+                </CSSTransition>
             </>
         )
     }
     
 }
 
-const connected = connect((state: any) => ({
-    currentView: state.currentView
-}), undefined)(Application)
-
-export default hot(connected)
+export default hot(connect<unknown, typeof mapDispatch>(mapState, mapDispatch)(Application))

src/renderer/components/loader/Loader.css

@@ -0,0 +1,62 @@
+/*******************************************************************************
+ *                                                                             *
+ * Loading Element (app.ejs)                                                   *
+ *                                                                             *
+ ******************************************************************************/
+
+/* Loading container, placed above everything. */
+#loadingContainer {
+    position: absolute;
+    z-index: 400;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 100%;
+    height: calc(100% - 22px);
+}
+
+/* Loading content container. */
+#loadingContent {
+    position: relative;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+}
+
+/* Spinner container. */
+#loadSpinnerContainer {
+    position: relative;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+/* Stationary image for the spinner. */
+#loadCenterImage {
+    position: absolute;
+    width: 277px;
+    height: auto;
+}
+
+/* Rotating image for the spinner. */
+#loadSpinnerImage {
+    width: 280px;
+    height: auto;
+    z-index: 400;
+}
+
+/* Rotating animation for the spinner. */
+@keyframes rotating {
+    from {
+        transform: rotate(0deg);
+    }
+    to {
+        transform: rotate(360deg);
+    }
+}
+
+/* Class which is applied when the spinner image is spinning. */
+.rotating {
+    animation: rotating 10s linear infinite;
+}

src/renderer/components/loader/Loader.tsx

@@ -0,0 +1,23 @@
+import * as React from 'react'
+
+import './Loader.css'
+
+import LoadingSeal from '../../../../static/images/LoadingSeal.png'
+import LoadingText from '../../../../static/images/LoadingText.png'
+
+export default class Loader extends React.Component {
+
+    render(): JSX.Element {
+        return <>
+            <div id="loadingContainer">
+                <div id="loadingContent">
+                    <div id="loadSpinnerContainer">
+                        <img id="loadCenterImage" src={LoadingSeal} />
+                        <img id="loadSpinnerImage" className="rotating" src={LoadingText} />
+                    </div>
+                </div>
+            </div>
+        </>
+    }
+
+}

src/renderer/components/login/Login.css

@@ -19,7 +19,6 @@
     align-items: center;
     height: 100%;
     width: 100%;
-    transition: filter 0.25s ease;
     background: rgba(0, 0, 0, 0.50);
 }
 

src/renderer/components/welcome/Welcome.css

@@ -5,6 +5,7 @@
     align-items: center;
     height: 100%;
     width: 100%;
+    background: rgba(0, 0, 0, 0.50);
 }
 
 #welcomeContent {

src/renderer/index.css

@@ -28,6 +28,8 @@
 /* TODO: Temp for development */
 body {
     /* background-image: url('../../static/images/backgrounds/3.jpg'); */
+    transition: background-image 1s ease;
+    background-image: url('data:image/jpeg;base64,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');
     background-size: cover;
 }
 

src/renderer/index.tsx

@@ -6,19 +6,6 @@ import './index.css'
 
 import Application from './components/Application'
 import { Provider } from 'react-redux'
-import { readdirSync } from 'fs-extra'
-import { join } from 'path'
-
-declare const __static: string
-
-function setBackground(id: number) {
-    // eslint-disable-next-line @typescript-eslint/no-var-requires
-    const bk = require('../../static/images/backgrounds/' + id + '.jpg')
-    document.body.style.backgroundImage = `url('${bk.default}')`
-}
-
-const id = Math.floor((Math.random() * readdirSync(join(__static, 'images', 'backgrounds')).length))
-setBackground(id)
 
 // Create main element
 const mainElement = document.createElement('div')

src/renderer/redux/actions/appActions.ts

@@ -0,0 +1,19 @@
+import { Action } from 'redux'
+
+export enum AppActionType {
+    ChangeLoadState = 'SET_LOADING'
+}
+
+// eslint-disable-next-line @typescript-eslint/no-empty-interface
+export interface AppAction extends Action {}
+
+export interface ChangeLoadStateAction extends AppAction {
+    payload: boolean
+}
+
+export function setLoadingState(state: boolean): ChangeLoadStateAction {
+    return {
+        type: AppActionType.ChangeLoadState,
+        payload: state
+    }
+}

src/renderer/redux/reducers/appReducer.ts

@@ -0,0 +1,24 @@
+import { ChangeLoadStateAction, AppActionType, AppAction } from '../actions/appActions'
+import { Reducer } from 'redux'
+
+export interface AppState {
+    loading: boolean
+}
+
+const defaultAppState: AppState = {
+    loading: true
+}
+
+// TODO remove loading from global state. Keeping as an example...
+const AppReducer: Reducer<AppState, AppAction> = (state = defaultAppState, action) => {
+    switch(action.type) {
+        case AppActionType.ChangeLoadState:
+            return {
+                ...state,
+                loading: (action as ChangeLoadStateAction).payload
+            }
+    }
+    return state
+}
+
+export default AppReducer

src/renderer/redux/reducers/index.ts

@@ -1,6 +1,8 @@
 import { combineReducers } from 'redux'
 import ViewReducer from './viewReducer'
+import AppReducer from './appReducer'
 
 export default combineReducers({
-    currentView: ViewReducer
+    currentView: ViewReducer,
+    app: AppReducer
 })

src/renderer/redux/store.ts

@@ -1,4 +1,6 @@
 import { createStore } from 'redux'
 import reducer from './reducers'
 
+export type StoreType = ReturnType<typeof reducer>
+
 export default createStore(reducer)

typings/redux-augment.d.ts

@@ -0,0 +1,6 @@
+import { StoreType } from '../src/renderer/redux/store'
+
+declare module 'react-redux' {
+    // eslint-disable-next-line @typescript-eslint/no-empty-interface
+    export interface DefaultRootState extends StoreType {}
+}

typings/static-import.d.ts

@@ -0,0 +1,16 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+
+declare module '*.png' {
+    const value: any
+    export default value
+}
+
+declare module '*.jpg' {
+    const value: any
+    export default value
+}
+
+declare module '*.gif' {
+    const value: any
+    export default value
+}