Log website URL upon deployment

packages/cli/index.js

@@ -298,9 +298,7 @@ program
     const rootFolder = path.resolve(process.cwd());
     const outputRoot = path.join(rootFolder, '_site');
     new Site(rootFolder, outputRoot, undefined, undefined, options.siteConfig).deploy(options.travis)
-      .then(() => {
-        logger.info('Deployed!');
-      })
+      .then(depUrl => (depUrl !== null ? logger.info(`Deployed at ${depUrl}!`) : logger.info('Deployed!')))
       .catch(handleError);
     printHeader();
   });

packages/core/package.json

@@ -58,6 +58,7 @@
     "nunjucks": "^3.2.0",
     "path-is-inside": "^1.0.2",
     "progress": "^2.0.3",
+    "simple-git": "^2.17.0",
     "walk-sync": "^2.0.2",
     "winston": "^2.4.4"
   },

packages/core/src/Site/index.js

@@ -6,6 +6,7 @@ const path = require('path');
 const Promise = require('bluebird');
 const ProgressBar = require('progress');
 const walkSync = require('walk-sync');
+const simpleGit = require('simple-git');
 
 const SiteConfig = require('./SiteConfig');
 const Page = require('../Page');
@@ -18,6 +19,7 @@ const FsUtil = require('../utils/fsUtil');
 const delay = require('../utils/delay');
 const logger = require('../utils/logger');
 const utils = require('../utils');
+const gitUtil = require('../utils/git');
 
 const {
   LAYOUT_DEFAULT_NAME,
@@ -1249,6 +1251,7 @@ class Site {
       branch: 'gh-pages',
       message: 'Site Update.',
       repo: '',
+      remote: 'origin',
     };
     process.env.NODE_DEBUG = 'gh-pages';
     return new Promise((resolve, reject) => {
@@ -1298,13 +1301,70 @@ class Site {
             };
           }
 
-          return publish(basePath, options);
+          publish(basePath, options);
+          return options;
         })
-        .then(resolve)
+        .then((options) => {
+          const git = simpleGit({ baseDir: process.cwd() });
+          options.remote = defaultDeployConfig.remote;
+          return Site.getDeploymentUrl(git, options);
+        })
+        .then(depUrl => resolve(depUrl))
         .catch(reject);
     });
   }
 
+  /**
+   * Gets the deployed website's url, returning null if there was an error retrieving it.
+   */
+  static getDeploymentUrl(git, options) {
+    const HTTPS_PREAMBLE = 'https://';
+    const SSH_PREAMBLE = 'git@github.com:';
+    const GITHUB_IO_PART = 'github.io';
+
+    // https://<name|org name>.github.io/<repo name>/
+    function constructGhPagesUrl(remoteUrl) {
+      if (!remoteUrl) {
+        return null;
+      }
+      if (remoteUrl.startsWith(HTTPS_PREAMBLE)) {
+        // https://github.com/<name|org>/<repo>.git (HTTPS)
+        const parts = remoteUrl.split('/');
+        const repoName = parts[parts.length - 1].toLowerCase();
+        const name = parts[parts.length - 2].toLowerCase();
+        return `https://${name}.${GITHUB_IO_PART}/${repoName}`;
+      } else if (remoteUrl.startsWith(SSH_PREAMBLE)) {
+        // git@github.com:<name|org>/<repo>.git (SSH)
+        const parts = remoteUrl.split('/');
+        const repoName = parts[parts.length - 1].toLowerCase();
+        const name = parts[0].substring(SSH_PREAMBLE.length);
+        return `https://${name}.${GITHUB_IO_PART}/${repoName}`;
+      }
+      return null;
+    }
+
+    const { remote, branch, repo } = options;
+    const cnamePromise = gitUtil.getRemoteBranchFile(git, 'blob', remote, branch, 'CNAME');
+    const remoteUrlPromise = gitUtil.getRemoteUrl(git, remote);
+    const promises = [cnamePromise, remoteUrlPromise];
+
+    return Promise.all(promises)
+      .then((results) => {
+        const cname = results[0].trim();
+        const remoteUrl = results[1].trim();
+        if (cname) {
+          return cname;
+        } else if (repo) {
+          return constructGhPagesUrl(repo);
+        }
+        return constructGhPagesUrl(remoteUrl);
+      })
+      .catch((err) => {
+        logger.error(err);
+        return null;
+      });
+  }
+
   _setTimestampVariable() {
     const options = {
       weekday: 'short',

packages/core/src/utils/git.js

@@ -0,0 +1,27 @@
+/**
+ * Contains methods using simple-git to perform commands relating to git.
+ */
+module.exports = {
+  /**
+   * Returns the contents of a remote file, undefined if an error was encountered.
+   * See: https://git-scm.com/docs/git-cat-file for accepted values for each input.
+   */
+  async getRemoteBranchFile(simpleGit, type, remote, branch, fileName) {
+    try {
+      const catFileTarget = `${remote}/${branch}:${fileName}`;
+      return await simpleGit.catFile([type, catFileTarget]);
+    } catch (e) {
+      return undefined;
+    }
+  },
+  /**
+   * Returns the contents of a remote url (https or ssh), undefined if an error was encountered.
+   */
+  async getRemoteUrl(simpleGit, remote) {
+    try {
+      return await simpleGit.remote(['get-url', remote]);
+    } catch (e) {
+      return undefined;
+    }
+  },
+};

packages/core/test/unit/Site.test.js

@@ -27,6 +27,14 @@ jest.mock('fs');
 jest.mock('walk-sync');
 jest.mock('gh-pages');
 jest.mock('../../src/Page');
+jest.mock('simple-git', () => () => ({
+  ...jest.requireActual('simple-git')(),
+  // A test file should reduce dependencies on external libraries; use pure js functions instead.
+  // eslint-disable-next-line lodash/prefer-constant
+  catFile: jest.fn(() => 'mock-test-website.com'),
+  // eslint-disable-next-line lodash/prefer-constant
+  remote: jest.fn(() => 'https://github.com/mockName/mockRepo.git'),
+}));
 
 afterEach(() => fs.vol.reset());
 
@@ -470,7 +478,12 @@ test('Site deploys with default settings', async () => {
   await site.deploy();
   expect(ghpages.dir).toEqual('_site');
   expect(ghpages.options)
-    .toEqual({ branch: 'gh-pages', message: 'Site Update.', repo: '' });
+    .toEqual({
+      branch: 'gh-pages',
+      message: 'Site Update.',
+      repo: '',
+      remote: 'origin',
+    });
 });
 
 test('Site deploys with custom settings', async () => {
@@ -490,7 +503,12 @@ test('Site deploys with custom settings', async () => {
   await site.deploy();
   expect(ghpages.dir).toEqual('_site');
   expect(ghpages.options)
-    .toEqual({ branch: 'master', message: 'Custom Site Update.', repo: 'https://github.com/USER/REPO.git' });
+    .toEqual({
+      branch: 'master',
+      message: 'Custom Site Update.',
+      repo: 'https://github.com/USER/REPO.git',
+      remote: 'origin',
+    });
 });
 
 test('Site should not deploy without a built site', async () => {