changed-log/src/changed-log.js

require('lazy-ass');
var check = require('check-more-types');
var packageRepo = require('./package-repo');

var log = console.log.bind(console);
var debug = require('debug')('main');
var _ = require('lodash');
var utils = require('./utils');
var Promise = require('bluebird');

function findCommitIds(options, repoInfo) {
  la(check.object(repoInfo), 'missing repo info', repoInfo);

  var tagsToCommits = require('./get-commits-from-tags');
  return tagsToCommits({
    user: repoInfo.user,
    repo: repoInfo.repo,
    from: options.from,
    to: options.to
  }).tap(debug)
    .then(function mergeCommitInfo(tagsInfo) {
      return _.extend({}, repoInfo, options, tagsInfo);
    });
}

function findCommentsBetweenTags(options) {
  la(check.object(options), 'missing options', options);
  la(check.object(options.fromTag), 'missing fromTag', options);
  la(check.object(options.toTag), 'missing toTag', options);

  var findCommits = require('./get-comments-between-commits');
  return findCommits({
    user: options.user,
    repo: options.repo,
    from: options.fromTag.sha,
    to: options.toTag.sha
  }).then(function (report) {
    report.options.name = options.name;
    report.options.from = options.from;
    report.options.to = options.to;
    return report;
  });
}

function askGithubUsernameAndPassword() {
  var inquirer = require('inquirer');

  var username = {
    type: 'input',
    name: 'username',
    message: 'github username'
  };
  var password = {
    type: 'password',
    name: 'password',
    message: 'github password (not stored locally)'
  };

  return new Promise(function (resolve) {
    inquirer.prompt([username, password], function (answers) {
      la(check.unemptyString(answers.username), 'missing username');
      la(check.unemptyString(answers.password), 'missing password');
      resolve({
        username: answers.username,
        password: answers.password
      });
    });
  });
}

function githubLogin() {
  return askGithubUsernameAndPassword()
    .then(function (info) {
      log('trying to login to github %s', info.username);
      la(check.unemptyString(info.password), 'empty password for', info.username);

      utils.github.authenticate({
        type: 'basic',
        username: info.username,
        password: info.password
      });
    });
}


function changedLogReport(options, reportOptions) {
  // TODO validate options
  options = options || {};
  reportOptions = reportOptions || {};

  var allTags;

  return packageRepo(options.name)
    .tap(debug)
    .then(_.partial(findCommitIds, options))
    .tap(function (result) {
      la(check.array(result.allTags), 'expected all tags in', result);
      allTags = result.allTags;
    })
    .then(findCommentsBetweenTags)
    .then(function mergeCommitsAndTags(report) {
      report.allTags = allTags;
      return report;
    })
    .tap(debug)
    .tap(function (report) {
      la(check.object(report), 'missing report', report);
      la(check.fn(report.print), 'cannot print report', report);
      report.print(reportOptions);
    });
}

function changedLog(options, reportOptions) {
  // TODO validate options
  options = options || {};
  reportOptions = reportOptions || {};

  if (options.auth) {
    log('Please login to github to increase the API rate limit');
    return githubLogin()
      .then(_.partial(changedLogReport, options, reportOptions));
  }

  return changedLogReport(options, reportOptions);
}

module.exports = changedLog;