chore: moved node dependencies hook

hooks/lib/sdk/nodeDependencies.js

@@ -0,0 +1,112 @@
+'use strict';
+
+// install the node dependencies for Branch SDK
+
+(function () {
+  // properties
+  var SDK = 'branch-cordova-sdk';
+  var fs = require('fs');
+  var path = require('path');
+  var exec = require('child_process').exec;
+  var installFlagName = '.installed';
+  var installFlagLocation;
+  var dependencies;
+  var async;
+  var q;
+
+  // hook entry
+  module.exports = {
+    install: install
+  };
+
+  // main
+  // @return {void} based on async npm install completion
+  function install(context) {
+    q = context.requireCordovaModule('q');
+    async = new q.defer();
+    installFlagLocation = path.join(context.opts.projectRoot, 'plugins', context.opts.plugin.id, installFlagName);
+    dependencies = require(path.join(context.opts.projectRoot, 'plugins', context.opts.plugin.id, 'package.json')).dependencies;
+
+    // only run once
+    if (getPackageInstalled()) {
+      return;
+    }
+
+    // install node modules
+    var modules = getNodeModulesToInstall(dependencies);
+    installNodeModules(modules, function (err) {
+      // handle error
+      if (err) {
+        throw new Error('Failed to install the Branch SDK');
+      }
+      // only run once
+      else {
+        setPackageInstalled();
+      }
+      // async complete
+      async.resolve();
+    });
+
+    // wait until callbacks from the all the npm install complete
+    return async.promise;
+  };
+
+  // installs the node modules via npm install one at a time
+  // @return {callback(error)}
+  function installNodeModules(modules, callback) {
+    // base case
+    if (modules.length <= 0) {
+      return callback(false);
+    }
+
+    // install one at a time
+    var module = modules.pop();
+    console.log('Installing "' + module + '"');
+
+    var install = 'npm install --prefix ./plugins/' + SDK + ' -D ' + module;
+    exec(install, function (err, stdout, stderr) {
+      // handle error
+      if (err) {
+        throw new Error('Failed to install Branch Dependency: "' + module + '"');
+        return callback(true);
+      }
+      // next module
+      else {
+        installNodeModules(modules, callback);
+      }
+    });
+  }
+
+  // checks to see which node modules need to be installed
+  // @return {[string]} of node modules from package.json.dependencies
+  function getNodeModulesToInstall(dependencies) {
+    var modules = [];
+    for (var module in dependencies) {
+      if (dependencies.hasOwnProperty(module)) {
+        try {
+          var exists = require(module);
+        } catch (err) {
+          modules.push(module);
+        }
+      }
+    }
+    return modules;
+  }
+
+  // if the Branch SDK package has already been installed
+  // @return {boolean} based on .installed file is found
+  function getPackageInstalled() {
+    try {
+      var exists = fs.readFileSync(installFlagLocation);
+      return true;
+    } catch (err) {
+      return false;
+    }
+  }
+
+  // set that the Branch SDK package has been installed
+  // @return {void} based on .installed file is created
+  function setPackageInstalled() {
+    fs.closeSync(fs.openSync(installFlagLocation, 'w'));
+  }
+})();