engine.js

"format cjs";

var wrap = require('word-wrap');
var map = require('lodash.map');
var longest = require('longest');
var rightPad = require('right-pad');

var filter = function(array) {
    return array.filter(function(x) {
                        return x;
                        });
};

// This can be any kind of SystemJS compatible module.
// We use Commonjs here, but ES6 or AMD would do just
// fine.
module.exports = function(options) {
    
    var types = options.types;
    
    var length = longest(Object.keys(types)).length + 1;
    var choices = map(types, function(type, key) {
                      return {
                      name: rightPad(key + ':', length) + ' ' + type.description,
                      value: key
                      };
                      });
    
    return {
        // When a user runs `git cz`, prompter will
        // be executed. We pass you cz, which currently
        // is just an instance of inquirer.js. Using
        // this you can ask questions and get answers.
        //
        // The commit callback should be executed when
        // you're ready to send back a commit template
        // to git.
        //
        // By default, we'll de-indent your commit
        // template and will keep empty lines.
    prompter: function(cz, commit) {
        console.log('\nLine 1 will be cropped at 100 characters. All other lines will be wrapped after 100 characters.\n');
        
        // Let's ask some questions of the user
        // so that we can populate our commit
        // template.
        //
        // See inquirer.js docs for specifics.
        // You can also opt to use another input
        // collection library if you prefer.
        cz.prompt([{
                   type: 'list',
                   name: 'type',
                   message: 'Select the type of change that you\'re committing:',
                   choices: choices
                   }, {
                   type: 'input',
                   name: 'scope',
                   message: 'Denote the scope of this change ($location, $browser, $compile, etc.):\n'
                   }, {
                   type: 'input',
                   name: 'subject',
                   message: 'Write a short, imperative tense description of the change:\n'
                   }, {
                   type: 'input',
                   name: 'body',
                   message: 'Provide a longer description of the change:\n'
                   }, {
                   type: 'input',
                   name: 'issues',
                   message: 'Jira Issue ID(s) (required):\n'
                   }, {
                   type: 'input',
                   name: 'workflow',
                   message: 'Workflow command (testing, closed, etc.) (optional):\n'
                   }
                   // , {
                   //   type: 'input',
                   //   name: 'comment',
                   //   message: 'Jira comment (optional):\n'
                   // }
                   ]).then(function(answers) {
                           // parentheses are only needed when a scope is present
                           var scope = answers.scope.trim();
                           scope = scope ? '(' + answers.scope.trim() + ')' : '';
                           
                           // Hard limit this line
                           var head = (answers.type + scope + ': ' + answers.subject.trim());
                           
                           // Wrap these lines at 100 characters
                           var body = answers.body;
                           
                           var issues = filter([
                                                answers.issues,
                                                answers.workflow ? '#' + answers.workflow : undefined,
                                                answers.time ? '#time ' + answers.time : undefined,
                                                ]).join(' ');
                           
                           // var footer = filter([answers.head, answers.body, issues]).join('\n\n');
                           
                           commit(filter([head, issues]).join(' ') + '\n\n' + answers.body);
                           // commit(head + '\n\n' + body + '\n\n' + footer);
                           });
    }
    };
};