Fix incorrect link behaviour introduced with promise addition in ios postlink script (#1003)

* Fix incorrect link behaviour introduced with promise addition in ios
postlink script

* simplify postlink/run.js

Author: ruslan-bikkinin

scripts/postlink/android/postlink.js

@@ -2,88 +2,94 @@ var fs = require("fs");
 var glob = require("glob");
 var path = require("path");
 
-var ignoreFolders = { ignore: ["node_modules/**", "**/build/**"] };
-var buildGradlePath = path.join("android", "app", "build.gradle");
-var manifestPath = glob.sync("**/AndroidManifest.xml", ignoreFolders)[0];
+module.exports = () => {
 
-function findMainApplication() {
-    if (!manifestPath) {
-        return null;
-    }
+    console.log("Running android postlink script");
 
-    var manifest = fs.readFileSync(manifestPath, "utf8");
+    var ignoreFolders = { ignore: ["node_modules/**", "**/build/**"] };
+    var buildGradlePath = path.join("android", "app", "build.gradle");
+    var manifestPath = glob.sync("**/AndroidManifest.xml", ignoreFolders)[0];
 
-    // Android manifest must include single 'application' element
-    var matchResult = manifest.match(/application\s+android:name\s*=\s*"(.*?)"/);
-    if (matchResult) {
-        var appName = matchResult[1];
-    } else {
-        return null;
-    }
-    
-    var nameParts = appName.split('.');
-    var searchPath = glob.sync("**/" + nameParts[nameParts.length - 1] + ".java", ignoreFolders)[0];
-    return searchPath;
-}
+    function findMainApplication() {
+        if (!manifestPath) {
+            return null;
+        }
 
-var mainApplicationPath = findMainApplication() || glob.sync("**/MainApplication.java", ignoreFolders)[0];
+        var manifest = fs.readFileSync(manifestPath, "utf8");
 
-// 1. Add the getJSBundleFile override
-var getJSBundleFileOverride = `
-    @Override
-    protected String getJSBundleFile() {
-      return CodePush.getJSBundleFile();
+        // Android manifest must include single 'application' element
+        var matchResult = manifest.match(/application\s+android:name\s*=\s*"(.*?)"/);
+        if (matchResult) {
+            var appName = matchResult[1];
+        } else {
+            return null;
+        }
+        
+        var nameParts = appName.split('.');
+        var searchPath = glob.sync("**/" + nameParts[nameParts.length - 1] + ".java", ignoreFolders)[0];
+        return searchPath;
     }
-`;
 
-function isAlreadyOverridden(codeContents) {
-    return /@Override\s*\n\s*protected String getJSBundleFile\(\)\s*\{[\s\S]*?\}/.test(codeContents);
-}
+    var mainApplicationPath = findMainApplication() || glob.sync("**/MainApplication.java", ignoreFolders)[0];
 
-if (mainApplicationPath) {
-    var mainApplicationContents = fs.readFileSync(mainApplicationPath, "utf8");
-    if (isAlreadyOverridden(mainApplicationContents)) {
-        console.log(`"getJSBundleFile" is already overridden`);
-    } else {
-        var reactNativeHostInstantiation = "new ReactNativeHost(this) {";
-        mainApplicationContents = mainApplicationContents.replace(reactNativeHostInstantiation,
-            `${reactNativeHostInstantiation}\n${getJSBundleFileOverride}`);
-        fs.writeFileSync(mainApplicationPath, mainApplicationContents);
+    // 1. Add the getJSBundleFile override
+    var getJSBundleFileOverride = `
+        @Override
+        protected String getJSBundleFile() {
+        return CodePush.getJSBundleFile();
+        }
+    `;
+
+    function isAlreadyOverridden(codeContents) {
+        return /@Override\s*\n\s*protected String getJSBundleFile\(\)\s*\{[\s\S]*?\}/.test(codeContents);
     }
-} else {
-    var mainActivityPath = glob.sync("**/MainActivity.java", ignoreFolders)[0];
-    if (mainActivityPath) {
-        var mainActivityContents = fs.readFileSync(mainActivityPath, "utf8");
-        if (isAlreadyOverridden(mainActivityContents)) {
+
+    if (mainApplicationPath) {
+        var mainApplicationContents = fs.readFileSync(mainApplicationPath, "utf8");
+        if (isAlreadyOverridden(mainApplicationContents)) {
             console.log(`"getJSBundleFile" is already overridden`);
         } else {
-            var mainActivityClassDeclaration = "public class MainActivity extends ReactActivity {";
-            mainActivityContents = mainActivityContents.replace(mainActivityClassDeclaration,
-                `${mainActivityClassDeclaration}\n${getJSBundleFileOverride}`);
-            fs.writeFileSync(mainActivityPath, mainActivityContents);
+            var reactNativeHostInstantiation = "new ReactNativeHost(this) {";
+            mainApplicationContents = mainApplicationContents.replace(reactNativeHostInstantiation,
+                `${reactNativeHostInstantiation}\n${getJSBundleFileOverride}`);
+            fs.writeFileSync(mainApplicationPath, mainApplicationContents);
         }
     } else {
-        console.error(`Couldn't find Android application entry point. You might need to update it manually. \
-Please refer to plugin configuration section for Android at \
-https://github.com/microsoft/react-native-code-push#plugin-configuration-android for more details`);
+        var mainActivityPath = glob.sync("**/MainActivity.java", ignoreFolders)[0];
+        if (mainActivityPath) {
+            var mainActivityContents = fs.readFileSync(mainActivityPath, "utf8");
+            if (isAlreadyOverridden(mainActivityContents)) {
+                console.log(`"getJSBundleFile" is already overridden`);
+            } else {
+                var mainActivityClassDeclaration = "public class MainActivity extends ReactActivity {";
+                mainActivityContents = mainActivityContents.replace(mainActivityClassDeclaration,
+                    `${mainActivityClassDeclaration}\n${getJSBundleFileOverride}`);
+                fs.writeFileSync(mainActivityPath, mainActivityContents);
+            }
+        } else {
+            return Promise.reject(`Couldn't find Android application entry point. You might need to update it manually. \
+    Please refer to plugin configuration section for Android at \
+    https://github.com/microsoft/react-native-code-push#plugin-configuration-android for more details`);
+        }
     }
-}
 
-if (!fs.existsSync(buildGradlePath)) {
-    console.error(`Couldn't find build.gradle file. You might need to update it manually. \
-Please refer to plugin installation section for Android at \
-https://github.com/microsoft/react-native-code-push#plugin-installation-android---manual`);
-    return;
-}
+    if (!fs.existsSync(buildGradlePath)) {
+        return Promise.reject(`Couldn't find build.gradle file. You might need to update it manually. \
+    Please refer to plugin installation section for Android at \
+    https://github.com/microsoft/react-native-code-push#plugin-installation-android---manual`);
+    }
+
+    // 2. Add the codepush.gradle build task definitions
+    var buildGradleContents = fs.readFileSync(buildGradlePath, "utf8");
+    var reactGradleLink = buildGradleContents.match(/\napply from: ["'].*?react\.gradle["']/)[0];
+    var codePushGradleLink = `apply from: "../../node_modules/react-native-code-push/android/codepush.gradle"`;
+    if (~buildGradleContents.indexOf(codePushGradleLink)) {
+        console.log(`"codepush.gradle" is already linked in the build definition`);
+    } else {
+        buildGradleContents = buildGradleContents.replace(reactGradleLink,
+            `${reactGradleLink}\n${codePushGradleLink}`);
+        fs.writeFileSync(buildGradlePath, buildGradleContents);
+    }
 
-// 2. Add the codepush.gradle build task definitions
-var buildGradleContents = fs.readFileSync(buildGradlePath, "utf8");
-var reactGradleLink = buildGradleContents.match(/\napply from: ["'].*?react\.gradle["']/)[0];
-var codePushGradleLink = `apply from: "../../node_modules/react-native-code-push/android/codepush.gradle"`;
-if (~buildGradleContents.indexOf(codePushGradleLink)) {
-    console.log(`"codepush.gradle" is already linked in the build definition`);
-} else {
-    buildGradleContents = buildGradleContents.replace(reactGradleLink,
-        `${reactGradleLink}\n${codePushGradleLink}`);
-    fs.writeFileSync(buildGradlePath, buildGradleContents);
+    return Promise.resolve();
 }