Added post install script. (#345)

* Added post install script.

Added post install script to resolve different versions of file and file transfer plugin for different cordova versions.

* Refactored a few lines.

* Replaced exec method with sync version and added more output to the script.

* Fixed logic: no need to install anything if plugin is present.

Fixed versions of compatible plugins.

* Fixed formatting.

* Added support for phonegap cli.

Wrapped some functions in try..catch blocks.

* Fixed formatting.

* Renamed folder.

hooks/beforeInstall.js

@@ -0,0 +1,47 @@
+module.exports = function (ctx) {
+    var execSync = require('child_process').execSync;
+    var Q = ctx.requireCordovaModule('q');
+    var deferral = new Q.defer();
+
+    var cordovaCLI = "cordova";
+    try {
+        execSync(cordovaCLI);
+    } catch (e) {
+        try {
+            cordovaCLI = "phonegap";
+            execSync(cordovaCLI);
+        } catch (e) {
+            deferral.reject("An error occured. Please ensure that either the Cordova or PhoneGap CLI is installed.");
+        }
+    }
+
+    console.log("Detecting cordova version...");
+    var cordovaVersion = ctx.opts.cordova.version;
+    console.log("Cordova version is " + cordovaVersion);
+
+    var plugins = execSync(cordovaCLI + ' plugin ls');
+    if (!plugins.includes('cordova-plugin-file-transfer')) {
+        if (parseFloat(cordovaVersion) < 6.3) {
+            if (!plugins.includes('cordova-plugin-file')) {
+                console.log("Installing the compatible version of file plugin... ");
+                execSync(cordovaCLI + ' plugin add [email protected]');
+            }
+            console.log("Installing the compatible version of file transfer plugin... ");
+            execSync(cordovaCLI + ' plugin add [email protected]');
+        } else {
+            try {
+                console.log("Installing the latest version of file-transfer plugin... ");
+                execSync(cordovaCLI + ' plugin add cordova-plugin-file-transfer@latest');
+            } catch (e) {
+                console.log('The version of file plugin appears to be incompatible with the latest file transfer version. Installing compatible version of file transfer.... ');
+                execSync(cordovaCLI + ' plugin add [email protected]');
+            }
+        }
+    }
+    if (!plugins.includes('cordova-plugin-zip')) {
+        execSync(cordovaCLI + ' plugin add cordova-plugin-zip');
+    }
+    deferral.resolve();
+
+    return deferral.promise;
+};

package.json

@@ -1,4 +1,4 @@
-{
+{
   "name": "cordova-plugin-code-push",
   "version": "1.11.0",
   "description": "CodePush Plugin for Apache Cordova",
@@ -52,4 +52,4 @@
     "tslint": "^4.5.1",
     "typescript": "^2.5.2"
   }
-}
+}

plugin.xml

@@ -1,14 +1,13 @@
-<?xml version="1.0" encoding="UTF-8" ?>
+<?xml version="1.0" encoding="UTF-8" ?>
     <plugin xmlns="http://apache.org/cordova/ns/plugins/1.0" id="cordova-plugin-code-push" version="1.11.0">
         <name>CodePush</name>
         <description>This plugin allows you to push code updates to your apps instantly using the CodePush service</description>
         <license>MIT</license>
         <keywords>cordova,code,push</keywords>
         <repo>https://github.com/Microsoft/cordova-plugin-code-push.git</repo>
 
+        <hook type="before_plugin_install" src="scripts/beforeInstall.js" />    
         <dependency id="code-push" version="2.0.4" />
-        <dependency id="cordova-plugin-file-transfer" version="1.6.3" />
-        <dependency id="cordova-plugin-zip" version=">=3.0.0" />
         <dependency id="cordova-plugin-dialogs" version=">=1.1.1" />
         <dependency id="cordova-plugin-device" version=">=1.1.0" />