Add onboarding component

src/screens/Onboarding/index.tsx

@@ -0,0 +1,76 @@
+import React, { useCallback, useEffect } from 'react';
+import styled from 'styled-components/native';
+import { THEME_COLOR } from 'CONSTANTS';
+import { Button } from 'react-native';
+import { useNavigation } from '@react-navigation/native';
+import { NavigationProp } from 'screens';
+import { useTypedSelector } from 'store';
+import { useDispatch } from 'react-redux';
+import { setOnboardingStatus } from 'store/settings/actions';
+
+const Container = styled.SafeAreaView`
+    background-color: ${THEME_COLOR};
+    flex: 1;
+    justify-content: center;
+`;
+
+const TextContainer = styled.ScrollView`
+    padding: 25px;
+`;
+
+const Text = styled.Text`
+    text-align: center;
+    color: white;
+    margin-bottom: 10px;
+`;
+
+const ButtonContainer = styled.View`
+    margin-top: 50px;
+`; 
+
+const Logo = styled.Image`
+    width: 150px;
+    height: 150px;
+    margin: 0 auto 50px auto;
+`;
+
+function Onboarding() {
+    // Get account from Redux and dispatcher
+    const account = useTypedSelector(state => state.settings.jellyfin);
+    const dispatch = useDispatch();
+
+    // Also retrieve the navigation handler so that we can open the modal in
+    // which the Jellyfin server is set
+    const navigation = useNavigation<NavigationProp>();
+    const handleClick = useCallback(() => navigation.navigate('SetJellyfinServer'), [navigation]);
+    
+    // We'll also respond to any change in the account, setting the onboarding
+    // status to true, so that the app becomes available.
+    useEffect(() => {
+        if (account) {
+            dispatch(setOnboardingStatus(true));
+        }
+    }, [account, dispatch]);
+    
+    return (
+        <Container>
+            <TextContainer contentContainerStyle={{ flexGrow: 1, justifyContent: 'center' }}>
+                <Logo source={require('../../assets/app-icon-white.png')} />
+                <Text >
+                    Welcome!
+                </Text>
+                <Text>
+                    Jellyfin Audio Player will allow you to stream your music library from anywhere, with full support for background audio and casting. 
+                </Text>
+                <Text>
+                    In order to get started, you need a Jellyfin server. Click the button below to enter your Jellyfin server address and login to it.
+                </Text>
+                <ButtonContainer>
+                    <Button title="Set Jellyfin Server" color="#ffffff" onPress={handleClick} />
+                </ButtonContainer>
+            </TextContainer>
+        </Container>
+    );
+}
+
+export default Onboarding;

src/screens/index.tsx

@@ -10,6 +10,8 @@ import PlayPauseIcon from 'assets/play-pause-fill.svg';
 import NotesIcon from 'assets/notes.svg';
 import GearIcon from 'assets/gear.svg';
 import { THEME_COLOR } from 'CONSTANTS';
+import { useTypedSelector } from 'store';
+import Onboarding from './Onboarding';
 
 const Stack = createStackNavigator();
 const Tab = createBottomTabNavigator();
@@ -34,6 +36,14 @@ function getIcon(route: string): React.FC<any> | null {
 }
 
 function Screens() {
+    const isOnboardingComplete = useTypedSelector(state => state.settings.isOnboardingComplete);
+    
+    // GUARD: If onboarding has not been completed, we instead render the
+    // onboarding component, so that the user can get setup in the app.
+    if (!isOnboardingComplete) {
+        return <Onboarding />;
+    }
+
     return (
         <Tab.Navigator
             screenOptions={({ route }) => ({

src/screens/modals/SetJellyfinServer/index.tsx

@@ -33,7 +33,9 @@ export default function SetJellyfinServer() {
                 />
             ) : (
                 <View style={{ padding: 20 }}>
-                    <Text style={colors.text}>Please enter your Jellyfin server URL first. Make sure to include the protocol and port</Text>
+                    <Text style={colors.text}>
+                        Please enter your Jellyfin server URL. Make sure to include the protocol and port
+                    </Text>
                     <Input
                         placeholder="https://jellyfin.yourserver.io/"
                         onChangeText={setServerUrl}