git-tag-commit.js

var CoreObject  = require('core-object');
var gitRepoInfo = require('git-repo-info');
var RSVP        = require('rsvp');

module.exports = CoreObject.extend({
  init: function(options) {
    this._super();
    this._plugin = options.plugin;
  },

  generate: function() {
    var providedTag = this._plugin.readConfig('tag');

    if (providedTag) {
      return RSVP.resolve({
        revisionKey: providedTag,
        timestamp: new Date().toISOString()
      });
    } else {
      var commitHashLength = this._plugin.readConfig('commitHashLength');
      var separator = this._plugin.readConfig('separator');
      var info = gitRepoInfo();

      if (info === null || info.root === null) {
        return RSVP.reject('Could not find git repository');
      }

      var tag = info.lastTag;
      var sha = info.sha.slice(0, commitHashLength);

      if (!tag || !sha) {
        return RSVP.reject('Could not build revision with tag `' + tag + '` and commit hash `' + sha + '`');
      }

      return RSVP.resolve({
        revisionKey: tag + separator + sha,
        timestamp: new Date().toISOString()
      });
    }
  }
});