Merge pull request #33 from Financial-Times/verify-layouts

added task to verify bower templates used in layouts exist

bin/next-build-tools.js

@@ -10,6 +10,7 @@ var clean = require('../tasks/clean');
 var configure = require('../tasks/configure');
 var provision = require('../tasks/provision');
 var verify = require('../tasks/verify');
+var verifyLayoutDeps = require('../tasks/verify-layout-deps');
 var destroy = require('../tasks/destroy');
 var nightwatch = require('../tasks/nightwatch');
 var downloadConfiguration = require('../tasks/download-configuration');
@@ -77,6 +78,13 @@ program
 			verify().catch(exit);
 		});
 
+	program
+		.command('verify-layout-deps')
+		.description('Verifies that the application has installed compatible versions of bower components which provide templates used by page layouts contained in ft-next-express')
+		.action(function() {
+			verifyLayoutDeps().catch(exit);
+		});
+
 	program
 		.command('nightwatch [test]')
 		.option('-c, --config <config>', 'The location of the nightwatch.json, defaults to Next Build Tools nightwatch.json')

package.json

@@ -17,7 +17,8 @@
     "glob": "^5.0.3",
     "haikro": "^1.13.0",
     "heroku-client": "^1.9.1",
-    "isomorphic-fetch": "^2.0.0"
+    "isomorphic-fetch": "^2.0.0",
+    "semver": "^4.3.1"
   },
   "devDependencies": {
     "npm-prepublish": "^1.2.0",

tasks/verify-layout-deps.js

@@ -0,0 +1,32 @@
+'use strict';
+var semver = require('semver');
+var fs = require('fs');
+var path = require('path');
+
+module.exports = function() {
+	return new Promise(function (resolve, reject) {
+		var layoutBowerDeps;
+
+		try {
+			layoutBowerDeps = require(path.join(process.cwd(), 'node_modules/ft-next-express/bower.json')).dependencies;
+		} catch (e) {
+			console.log('No layout bower template dependencies found. Updating ft-next-express recommended');
+			resolve();
+		}
+
+		Object.keys(layoutBowerDeps).forEach(function (dep) {
+			if (!fs.exists(path.join(process.cwd(), 'bower_components', dep, '.bower.json'))) {
+				reject('This app needs to bower install ' + dep + '#' + layoutBowerDeps[dep] + ' in order to render layouts');
+			}
+			var appSemver = require(path.join(process.cwd(), 'bower_components', dep, '.bower.json')).version;
+
+			if (!semver.satisfies(appSemver, layoutBowerDeps[dep])) {
+				reject('This app needs to install a version of ' + dep + ' compatible with the semver ' + layoutBowerDeps[dep] + ' in order to render layouts');
+			}
+		});
+
+		console.log('Layout bower template dependencies OK');
+		resolve();
+	});
+
+};