add option for branch

Author: eedrah

README.markdown

@@ -22,6 +22,7 @@ gitlab-le \
 --production                                            `# OPTIONAL - Obtain a real certificate instead of a dummy one and configure your repository to use it`
 --path                                                  `# OPTIONAL - Absolute path in your repository where challenge files should be uploaded`
 --jekyll                                                `# OPTIONAL - Upload challenge files with a Jekyll-compatible YAML front matter` \
+--branch                                                `# OPTIONAL - Upload challenge files to this branch, default is the main branch of the repository` \
 ```
 
 See `gitlab-le --help` for more details.
@@ -77,4 +78,4 @@ However, GitLab does not provide a way to automatically renew certificates, so t
 
 ## Automation
 
-Since 10.2, GitLab provides an API to configure HTTPS certificates on a GitLab page, which means `gitlab-le` can be configured to obtain new certificates when your existing ones are about to expire.
+Since 10.2, GitLab provides an API to configure HTTPS certificates on a GitLab page, which means `gitlab-le` can be configured to obtain new certificates when your existing ones are about to expire.

args.js

@@ -34,11 +34,15 @@ module.exports = yargs
         describe: 'Obtain a real certificate instead of a dummy one and configure your repository to use it',
         type: 'boolean',
         default: false
+    }).option('branch', {
+        describe: 'Select the branch where the challenge files should be uploaded.',
+        type: 'string',
+        default: ''
     }).example('$0 --domain example.com www.example.com --email [email protected] --repository https://gitlab.com/foo/example.gitlab.io --token abc123', 'Simple build where all files are served from public/ inside your repository')
     .example('$0 --jekyll --path / --domain example.com --email [email protected] --repository https://gitlab.example.com/foo/myrepo --token abc123', 'Jekyll website that serves all valid files in your repository\'s root directory')
     .wrap(yargs.terminalWidth())
     .check(argv => {
-        const empty = Object.keys(argv).filter(key => key !== '_' && argv[key].length == 0);
+        const empty = Object.keys(argv).filter(key => key !== '_' && key !== 'branch' && argv[key].length == 0);
         if (empty.length > 0) {
             console.error(`Missing required arguments: ${empty.join(', ')}`);
             process.exit(1);

lib.js

@@ -47,7 +47,7 @@ module.exports = (options) => {
         });
     };
 
-    const uploadChallenge = (key, value, repo, domain) => {
+    const uploadChallenge = (key, value, repo, domain, branch) => {
         const challengeContent = options.jekyll ?
                 `---\nlayout: null\npermalink: /.well-known/acme-challenge/${key}\n---\n${value}` : value;
         // Need to bluebird-ify to use .asCallback()
@@ -56,20 +56,20 @@ module.exports = (options) => {
             url: `/projects/${repo.id}/repository/files/${filePath}`,
             body: {
                 commit_message: 'Automated Let\'s Encrypt renewal: add challenge',
-                branch: repo.default_branch,
+                branch: branch || repo.default_branch,
                 content: challengeContent,
                 author_name: 'gitlab-le'
             }
         })).return([`http://${domain}/.well-known/acme-challenge/${key}`, value]);
     };
 
-    const deleteChallenges = (key, repo) => {
+    const deleteChallenges = (key, repo, branch) => {
         const filePath = encodeURIComponent(path.posix.resolve('/', options.path, key));
         return Promise.resolve(gitlabRequest.delete({
             url: `/projects/${repo.id}/repository/files/${filePath}`,
             body: {
                 commit_message: 'Automated Let\'s Encrypt renewal: remove challenge',
-                branch: repo.default_branch,
+                branch: branch || repo.default_branch,
                 author_name: 'gitlab-le'
             }
         }));
@@ -151,13 +151,13 @@ module.exports = (options) => {
                     domains: options.domain,
                     setChallenge: (hostname, key, value, cb) => {
                         return Promise.resolve(deleteChallengesPromise)
-                            .then(() => uploadChallenge(key, value, repo, hostname))
+                            .then(() => uploadChallenge(key, value, repo, hostname, options.branch))
                             .tap(res => console.log(`Uploaded challenge file, polling until it is available at ${res[0]}`))
                             .spread(pollUntilDeployed)
                             .asCallback(cb);
                     },
                     removeChallenge: (hostname, key, cb) => {
-                        return (deleteChallengesPromise = deleteChallenges(key, repo)).finally(() => cb(null));
+                        return (deleteChallengesPromise = deleteChallenges(key, repo, options.branch)).finally(() => cb(null));
                     }
                 });
             }).tap(cert =>