Nightly build task

Add a `grunt nightly` build task that copies needed files to a build
folder, then zips them up for distribution. We can also add a tag and
push it to github but I've only tested it with throwaway branches.

I made some guesses about the build folder and dist folder.  If you
have a better way feel free to give some recommendations.

Related to #102.

Gruntfile.js

@@ -1,9 +1,22 @@
 (function () {
     "use strict";
 
-    var configureGrunt = function (grunt) {
+    var path = require('path'),
+        buildDirectory = path.resolve(process.cwd(), '../build'),
+        distDirectory =  path.resolve(process.cwd(), '../dist'),
+        configureGrunt = function (grunt) {
 
             var cfg = {
+                // Common paths to be used by tasks
+                paths: {
+                    build: buildDirectory,
+                    nightlyBuild: path.join(buildDirectory, 'nightly'),
+                    dist: distDirectory,
+                    nightlyDist: path.join(distDirectory, 'nightly')
+                },
+
+                pkg: grunt.file.readJSON('package.json'),
+
                 // JSLint all the things!
                 jslint: {
                     directives: {
@@ -48,6 +61,22 @@
                 shell: {
                     bourbon: {
                         command: 'bourbon install --path core/admin/assets/sass/modules/'
+                    },
+
+                    commitNightly: {
+                        command: 'git commit package.json -m "Nightly build <%= pkg.version %>"'
+                    },
+
+                    tagNightly: {
+                        command: 'git tag <%= pkg.version %> -a -m "Nightly build <%= pkg.version %>"'
+                    },
+
+                    pushMaster: {
+                        command: 'git push origin master'
+                    },
+
+                    pushMasterTags: {
+                        command: 'git push origin master --tags'
                     }
                 },
 
@@ -77,21 +106,54 @@
                         files: './core/admin/assets/tmpl/**/*.hbs',
                         tasks: ['handlebars']
                     }
+                },
+
+                copy: {
+                    nightly: {
+                        files: [{
+                            expand: true,
+                            src: [
+                                '**',
+
+                                '!node_modules/**',
+                                '!core/shared/data/*.db',
+                                '!.sass*',
+                                '!.af*',
+                                '!.git*',
+                                '!.groc*',
+                                '!.travis.yml'
+                            ],
+                            dest: "<%= paths.nightlyBuild %>/<%= pkg.version %>/"
+                        }]
                     }
+                },
 
+                zip: {
+                    nightly: {
+                        cwd: "<%= paths.nightlyBuild %>/<%= pkg.version %>/",
+                        src: ["<%= paths.nightlyBuild %>/<%= pkg.version %>/**"],
+                        dest: "<%= paths.nightlyDist %>/Ghost-Nightly-<%= pkg.version %>.zip"
+                    }
+                }
             };
 
-
             grunt.initConfig(cfg);
 
             grunt.loadNpmTasks("grunt-jslint");
             grunt.loadNpmTasks("grunt-mocha-test");
             grunt.loadNpmTasks("grunt-shell");
+            grunt.loadNpmTasks("grunt-bump");
+            grunt.loadNpmTasks("grunt-zip");
 
+            grunt.loadNpmTasks("grunt-contrib-copy");
             grunt.loadNpmTasks("grunt-contrib-watch");
             grunt.loadNpmTasks("grunt-contrib-sass");
             grunt.loadNpmTasks("grunt-contrib-handlebars");
 
+            // Update the package information after changes
+            grunt.registerTask('updateCurrentPackageInfo', function () {
+                cfg.pkg = grunt.file.readJSON('package.json');
+            });
 
             // Prepare the project for development
             // TODO: Git submodule init/update (https://github.com/jaubourg/grunt-update-submodules)?
@@ -103,6 +165,32 @@
             // Run tests and lint code
             grunt.registerTask("validate", ["jslint", "mochaTest:all"]);
 
+            /* Nightly builds
+             * - Bump patch version in package.json, 
+             * - Copy files to build-folder/nightly/#{version} directory
+             * - Clean out unnecessary files (travis, .git*, .af*, .groc*)
+             * - Zip files in build folder to dist-folder/#{version} directory
+             * - git commit package.json -m "Nightly build #{version}"
+             * - git tag -a -m "Nightly build #{version}"
+             * - git push origin master
+             * - git push origin master --tags
+             * - TODO: POST to pubsubhubub to notify of new build?
+             */
+            grunt.registerTask("nightly", [
+                "sass:admin",
+                "handlebars",
+                "validate",
+                "bump",
+                "updateCurrentPackageInfo",
+                "copy:nightly",
+                "zip:nightly",
+                /* Caution: shit gets real below here */
+                //"shell:commitNightly",
+                //"shell:tagNightly",
+                //"shell:pushMaster",
+                //"shell:pushMasterTags"
+            ]);
+
             // When you just say "grunt"
             grunt.registerTask("default", ['sass:admin', 'handlebars', 'watch']);
         };

package.json

@@ -31,6 +31,9 @@
     "sinon": "~1.7.2",
     "mocha": "~1.10.0",
     "grunt-contrib-handlebars": "~0.5.9",
-    "grunt-contrib-watch": "~0.4.4"
+    "grunt-contrib-watch": "~0.4.4",
+    "grunt-bump": "0.0.2",
+    "grunt-zip": "~0.9.0",
+    "grunt-contrib-copy": "~0.4.1"
   }
 }