undo-last-commit for atmo

init.coffee

{ BufferedProcess } = require 'atom'

atom.commands.add 'atom-text-editor', 'undo-last-commit': (event) ->
  path = atom.workspace.getCenter().getActiveTextEditor()?.getPath()
  directory = atom.project.getDirectories().filter((d) -> d.contains(path))[0]
  output = ''
  new BufferedProcess
    command: 'git'
    args: ['reset', 'HEAD^']
    options:
      cwd: directory.getPath()
    stdout: (data) -> output += data.toString()
    stderr: (data) -> output += data.toString()
    exit: (code) ->
      if code is 0
        atom.notifications.addSuccess('Undo Last Commit', detail: output);
      else
        atom.notifications.addError('Undo Last Commit', detail: output);