""" Manage user and organization robot accounts. """

from endpoints.api import (resource, nickname, ApiResource, log_action, related_user_resource,
                           require_user_admin, require_scope, path_param, parse_args,
                           truthy_bool, query_param)
from endpoints.exception import Unauthorized
from auth.permissions import AdministerOrganizationPermission, OrganizationMemberPermission
from auth.auth_context import get_authenticated_user
from auth import scopes
from data import model
from data.database import User, Team, Repository, FederatedLogin
from util.names import format_robot_username
from flask import abort
from app import avatar

def robot_view(name, token):
  return {
    'name': name,
    'token': token
  }


def permission_view(permission):
  return {
    'repository': {
      'name': permission.repository.name,
      'is_public': permission.repository.visibility.name == 'public'
    },
    'role': permission.role.name
  }


def robots_list(prefix, include_permissions=False):
  tuples = model.user.list_entity_robot_permission_teams(prefix,
                                                         include_permissions=include_permissions)

  robots = {}
  robot_teams = set()

  for robot_tuple in tuples:
    robot_name = robot_tuple.get(User.username)
    if not robot_name in robots:
      robots[robot_name] = {
        'name': robot_name,
        'token': robot_tuple.get(FederatedLogin.service_ident)
      }

      if include_permissions:
        robots[robot_name].update({
          'teams': [],
          'repositories': []
        })

    if include_permissions:
      team_name = robot_tuple.get(Team.name)
      repository_name = robot_tuple.get(Repository.name)

      if team_name is not None:
        check_key = robot_name + ':' + team_name
        if not check_key in robot_teams:
          robot_teams.add(check_key)

          robots[robot_name]['teams'].append({
            'name': team_name,
            'avatar': avatar.get_data(team_name, team_name, 'team')
          })

      if repository_name is not None:
        if not repository_name in robots[robot_name]['repositories']:
          robots[robot_name]['repositories'].append(repository_name)

  return {'robots': robots.values()}

@resource('/v1/user/robots')
class UserRobotList(ApiResource):
  """ Resource for listing user robots. """
  @require_user_admin
  @nickname('getUserRobots')
  @parse_args()
  @query_param('permissions',
               'Whether to include repostories and teams in which the robots have permission.',
               type=truthy_bool, default=False)
  def get(self, parsed_args):
    """ List the available robots for the user. """
    user = get_authenticated_user()
    return robots_list(user.username, include_permissions=parsed_args.get('permissions', False))


@resource('/v1/user/robots/<robot_shortname>')
@path_param('robot_shortname',
            'The short name for the robot, without any user or organization prefix')
class UserRobot(ApiResource):
  """ Resource for managing a user's robots. """
  @require_user_admin
  @nickname('getUserRobot')
  def get(self, robot_shortname):
    """ Returns the user's robot with the specified name. """
    parent = get_authenticated_user()
    robot, password = model.user.get_robot(robot_shortname, parent)
    return robot_view(robot.username, password)

  @require_user_admin
  @nickname('createUserRobot')
  def put(self, robot_shortname):
    """ Create a new user robot with the specified name. """
    parent = get_authenticated_user()
    robot, password = model.user.create_robot(robot_shortname, parent)
    log_action('create_robot', parent.username, {'robot': robot_shortname})
    return robot_view(robot.username, password), 201

  @require_user_admin
  @nickname('deleteUserRobot')
  def delete(self, robot_shortname):
    """ Delete an existing robot. """
    parent = get_authenticated_user()
    model.user.delete_robot(format_robot_username(parent.username, robot_shortname))
    log_action('delete_robot', parent.username, {'robot': robot_shortname})
    return '', 204


@resource('/v1/organization/<orgname>/robots')
@path_param('orgname', 'The name of the organization')
@related_user_resource(UserRobotList)
class OrgRobotList(ApiResource):
  """ Resource for listing an organization's robots. """
  @require_scope(scopes.ORG_ADMIN)
  @nickname('getOrgRobots')
  @parse_args()
  @query_param('permissions',
               'Whether to include repostories and teams in which the robots have permission.',
               type=truthy_bool, default=False)
  def get(self, orgname, parsed_args):
    """ List the organization's robots. """
    permission = OrganizationMemberPermission(orgname)
    if permission.can():
      return robots_list(orgname, include_permissions=parsed_args.get('permissions', False))

    raise Unauthorized()


@resource('/v1/organization/<orgname>/robots/<robot_shortname>')
@path_param('orgname', 'The name of the organization')
@path_param('robot_shortname',
            'The short name for the robot, without any user or organization prefix')
@related_user_resource(UserRobot)
class OrgRobot(ApiResource):
  """ Resource for managing an organization's robots. """
  @require_scope(scopes.ORG_ADMIN)
  @nickname('getOrgRobot')
  def get(self, orgname, robot_shortname):
    """ Returns the organization's robot with the specified name. """
    permission = AdministerOrganizationPermission(orgname)
    if permission.can():
      parent = model.organization.get_organization(orgname)
      robot, password = model.user.get_robot(robot_shortname, parent)
      return robot_view(robot.username, password)

    raise Unauthorized()

  @require_scope(scopes.ORG_ADMIN)
  @nickname('createOrgRobot')
  def put(self, orgname, robot_shortname):
    """ Create a new robot in the organization. """
    permission = AdministerOrganizationPermission(orgname)
    if permission.can():
      parent = model.organization.get_organization(orgname)
      robot, password = model.user.create_robot(robot_shortname, parent)
      log_action('create_robot', orgname, {'robot': robot_shortname})
      return robot_view(robot.username, password), 201

    raise Unauthorized()

  @require_scope(scopes.ORG_ADMIN)
  @nickname('deleteOrgRobot')
  def delete(self, orgname, robot_shortname):
    """ Delete an existing organization robot. """
    permission = AdministerOrganizationPermission(orgname)
    if permission.can():
      model.user.delete_robot(format_robot_username(orgname, robot_shortname))
      log_action('delete_robot', orgname, {'robot': robot_shortname})
      return '', 204

    raise Unauthorized()


@resource('/v1/user/robots/<robot_shortname>/permissions')
@path_param('robot_shortname',
            'The short name for the robot, without any user or organization prefix')
class UserRobotPermissions(ApiResource):
  """ Resource for listing the permissions a user's robot has in the system. """
  @require_user_admin
  @nickname('getUserRobotPermissions')
  def get(self, robot_shortname):
    """ Returns the list of repository permissions for the user's robot. """
    parent = get_authenticated_user()
    robot, _ = model.user.get_robot(robot_shortname, parent)
    permissions = model.permission.list_robot_permissions(robot.username)

    return {
      'permissions': [permission_view(permission) for permission in permissions]
    }


@resource('/v1/organization/<orgname>/robots/<robot_shortname>/permissions')
@path_param('orgname', 'The name of the organization')
@path_param('robot_shortname',
            'The short name for the robot, without any user or organization prefix')
@related_user_resource(UserRobotPermissions)
class OrgRobotPermissions(ApiResource):
  """ Resource for listing the permissions an org's robot has in the system. """
  @require_user_admin
  @nickname('getOrgRobotPermissions')
  def get(self, orgname, robot_shortname):
    """ Returns the list of repository permissions for the org's robot. """
    permission = AdministerOrganizationPermission(orgname)
    if permission.can():
      parent = model.organization.get_organization(orgname)
      robot, _ = model.user.get_robot(robot_shortname, parent)
      permissions = model.permission.list_robot_permissions(robot.username)

      return {
        'permissions': [permission_view(permission) for permission in permissions]
      }

    abort(403)


@resource('/v1/user/robots/<robot_shortname>/regenerate')
@path_param('robot_shortname',
            'The short name for the robot, without any user or organization prefix')
class RegenerateUserRobot(ApiResource):
  """ Resource for regenerate an organization's robot's token. """
  @require_user_admin
  @nickname('regenerateUserRobotToken')
  def post(self, robot_shortname):
    """ Regenerates the token for a user's robot. """
    parent = get_authenticated_user()
    robot, password = model.user.regenerate_robot_token(robot_shortname, parent)
    log_action('regenerate_robot_token', parent.username, {'robot': robot_shortname})
    return robot_view(robot.username, password)


@resource('/v1/organization/<orgname>/robots/<robot_shortname>/regenerate')
@path_param('orgname', 'The name of the organization')
@path_param('robot_shortname',
            'The short name for the robot, without any user or organization prefix')
@related_user_resource(RegenerateUserRobot)
class RegenerateOrgRobot(ApiResource):
  """ Resource for regenerate an organization's robot's token. """
  @require_scope(scopes.ORG_ADMIN)
  @nickname('regenerateOrgRobotToken')
  def post(self, orgname, robot_shortname):
    """ Regenerates the token for an organization robot. """
    permission = AdministerOrganizationPermission(orgname)
    if permission.can():
      parent = model.organization.get_organization(orgname)
      robot, password = model.user.regenerate_robot_token(robot_shortname, parent)
      log_action('regenerate_robot_token', orgname, {'robot': robot_shortname})
      return robot_view(robot.username, password)

    raise Unauthorized()