text: #!/usr/bin/python
  # -*- coding: utf-8 -*-
  
  # (c) 2014, Michael Warkentin <mwarkentin@gmail.com>
  # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
  
  from __future__ import absolute_import, division, print_function
  __metaclass__ = type
  
  
  ANSIBLE_METADATA = {'metadata_version': '1.1',
                      'status': ['preview'],
                      'supported_by': 'community'}
  
  
  DOCUMENTATION = '''
  ---
  module: bower
  short_description: Manage bower packages with bower
  description:
    - Manage bower packages with bower
  version_added: 1.9
  author: "Michael Warkentin (@mwarkentin)"
  options:
    name:
      description:
        - The name of a bower package to install
    offline:
      description:
        - Install packages from local cache, if the packages were installed before
      type: bool
      default: 'no'
    production:
      description:
        - Install with --production flag
      type: bool
      default: 'no'
      version_added: "2.0"
    path:
      description:
        - The base path where to install the bower packages
      required: true
    relative_execpath:
      description:
        - Relative path to bower executable from install path
      version_added: "2.1"
    state:
      description:
        - The state of the bower package
      default: present
      choices: [ "present", "absent", "latest" ]
    version:
      description:
        - The version to be installed
  '''
  
  EXAMPLES = '''
  - name: Install "bootstrap" bower package.
    bower:
      name: bootstrap
  
  - name: Install "bootstrap" bower package on version 3.1.1.
    bower:
      name: bootstrap
      version: '3.1.1'
  
  - name: Remove the "bootstrap" bower package.
    bower:
      name: bootstrap
      state: absent
  
  - name: Install packages based on bower.json.
    bower:
      path: /app/location
  
  - name: Update packages based on bower.json to their latest version.
    bower:
      path: /app/location
      state: latest
  
  # install bower locally and run from there
  - npm:
      path: /app/location
      name: bower
      global: no
  - bower:
      path: /app/location
      relative_execpath: node_modules/.bin
  '''
  import json
  import os
  
  from ansible.module_utils.basic import AnsibleModule
  
  
  class Bower(object):
      def __init__(self, module, **kwargs):
          self.module = module
          self.name = kwargs['name']
          self.offline = kwargs['offline']
          self.production = kwargs['production']
          self.path = kwargs['path']
          self.relative_execpath = kwargs['relative_execpath']
          self.version = kwargs['version']
  
          if kwargs['version']:
              self.name_version = self.name + '#' + self.version
          else:
              self.name_version = self.name
  
      def _exec(self, args, run_in_check_mode=False, check_rc=True):
          if not self.module.check_mode or (self.module.check_mode and run_in_check_mode):
              cmd = []
  
              if self.relative_execpath:
                  cmd.append(os.path.join(self.path, self.relative_execpath, "bower"))
                  if not os.path.isfile(cmd[-1]):
                      self.module.fail_json(msg="bower not found at relative path %s" % self.relative_execpath)
              else:
                  cmd.append("bower")
  
              cmd.extend(args)
              cmd.extend(['--config.interactive=false', '--allow-root'])
  
              if self.name:
                  cmd.append(self.name_version)
  
              if self.offline:
                  cmd.append('--offline')
  
              if self.production:
                  cmd.append('--production')
  
              # If path is specified, cd into that path and run the command.
              cwd = None
              if self.path:
                  if not os.path.exists(self.path):
                      os.makedirs(self.path)
                  if not os.path.isdir(self.path):
                      self.module.fail_json(msg="path %s is not a directory" % self.path)
                  cwd = self.path
  
              rc, out, err = self.module.run_command(cmd, check_rc=check_rc, cwd=cwd)
              return out
          return ''
  
      def list(self):
          cmd = ['list', '--json']
  
          installed = list()
          missing = list()
          outdated = list()
          data = json.loads(self._exec(cmd, True, False))
          if 'dependencies' in data:
              for dep in data['dependencies']:
                  dep_data = data['dependencies'][dep]
                  if dep_data.get('missing', False):
                      missing.append(dep)
                  elif ('version' in dep_data['pkgMeta'] and
                          'update' in dep_data and
                          dep_data['pkgMeta']['version'] != dep_data['update']['latest']):
                      outdated.append(dep)
                  elif dep_data.get('incompatible', False):
                      outdated.append(dep)
                  else:
                      installed.append(dep)
          # Named dependency not installed
          else:
              missing.append(self.name)
  
          return installed, missing, outdated
  
      def install(self):
          return self._exec(['install'])
  
      def update(self):
          return self._exec(['update'])
  
      def uninstall(self):
          return self._exec(['uninstall'])
  
  
  def main():
      arg_spec = dict(
          name=dict(default=None),
          offline=dict(default='no', type='bool'),
          production=dict(default='no', type='bool'),
          path=dict(required=True, type='path'),
          relative_execpath=dict(default=None, required=False, type='path'),
          state=dict(default='present', choices=['present', 'absent', 'latest', ]),
          version=dict(default=None),
      )
      module = AnsibleModule(
          argument_spec=arg_spec
      )
  
      name = module.params['name']
      offline = module.params['offline']
      production = module.params['production']
      path = module.params['path']
      relative_execpath = module.params['relative_execpath']
      state = module.params['state']
      version = module.params['version']
  
      if state == 'absent' and not name:
          module.fail_json(msg='uninstalling a package is only available for named packages')
  
      bower = Bower(module, name=name, offline=offline, production=production, path=path, relative_execpath=relative_execpath, version=version)
  
      changed = False
      if state == 'present':
          installed, missing, outdated = bower.list()
          if missing:
              changed = True
              bower.install()
      elif state == 'latest':
          installed, missing, outdated = bower.list()
          if missing or outdated:
              changed = True
              bower.update()
      else:  # Absent
          installed, missing, outdated = bower.list()
          if name in installed:
              changed = True
              bower.uninstall()
  
      module.exit_json(changed=changed)
  
  
  if __name__ == '__main__':
      main()
  