آشنایی با Feature Flags و به روز رسانی OTA با CodePush در React Native

// featureFlags.js
let featureFlags = {
  newFeature: false,
  anotherFeature: false,
};

export const loadFeatureFlags = async () => {
  try {
    const response = await fetch('https://api.example.com/feature-flags');
    const data = await response.json();
    featureFlags = { ...featureFlags, ...data };
  } catch (error) {
    console.error('Error loading Feature Flags:', error);
  }
};

export const getFeatureFlags = () => featureFlags;

// App.js
import React, { useEffect, useState } from 'react';
import { View, Text, ActivityIndicator } from 'react-native';
import { loadFeatureFlags, getFeatureFlags } from './featureFlags';

const App = () => {
  const [featureFlags, setFeatureFlags] = useState(getFeatureFlags());
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    const fetchFeatureFlags = async () => {
      await loadFeatureFlags();
      setFeatureFlags(getFeatureFlags());
      setLoading(false);
    };

    fetchFeatureFlags();
  }, []);

  if (loading) {
    return (
      <View>
        <ActivityIndicator size="large" color="#0000ff" />
      </View>
    );
  }

  return (
    <View>
      <Text>Main App</Text>
      {featureFlags.newFeature && (
        <Text>New Feature Enabled!</Text>
      )}
      {featureFlags.anotherFeature && (
        <Text>Another Feature Enabled!</Text>
      )}
    </View>
  );
};

export default App;

   npm install --save react-native-code-push

   npx react-native link react-native-code-push

   // App.js
   import React from 'react';
   import { View, Text } from 'react-native';
   import codePush from 'react-native-code-push';

   let codePushOptions = { checkFrequency: codePush.CheckFrequency.ON_APP_START };

   const App = () => {
     return (
       <View>
         <Text>Main App</Text>
       </View>
     );
   };

   export default codePush(codePushOptions)(App);

   // App.js
   import React, { useEffect, useState } from 'react';
   import { View, Text, ActivityIndicator } from 'react-native';
   import codePush from 'react-native-code-push';
   import { loadFeatureFlags, getFeatureFlags } from './featureFlags';

   let codePushOptions = { checkFrequency: codePush.CheckFrequency.ON_APP_START };

   const App = () => {
     const [featureFlags, setFeatureFlags] = useState(getFeatureFlags());
     const [loading, setLoading] = useState(true);

     useEffect(() => {
       const fetchFeatureFlags = async () => {
         await loadFeatureFlags();
         setFeatureFlags(getFeatureFlags());
         setLoading(false);
       };

       const syncCodePush = () => {
         codePush.sync({
           updateDialog: true,
           installMode: codePush.InstallMode.IMMEDIATE
         }, (status) => {
           if (status === codePush.SyncStatus.UPDATE_INSTALLED) {
             fetchFeatureFlags();
           }
         });
       };

       fetchFeatureFlags();
       syncCodePush();
     }, []);

     if (loading) {
       return (
         <View>
           <ActivityIndicator size="large" color="#0000ff" />
         </View>
       );
     }

     return (
       <View>
         <Text>Main App</Text>
         {featureFlags.newFeature && (
           <Text>New Feature Enabled!</Text>
         )}
         {featureFlags.anotherFeature && (
           <Text>Another Feature Enabled!</Text>
         )}
       </View>
     );
   };

   export default codePush(codePushOptions)(App);

   appcenter codepush release-react -a / -d Production