from endpoints.api import (resource, nickname, ApiResource, log_action, related_user_resource,
                           Unauthorized, require_user_admin, internal_only, require_scope,
                           path_param)
from auth.permissions import AdministerOrganizationPermission, OrganizationMemberPermission
from auth.auth_context import get_authenticated_user
from auth import scopes
from data import model
from util.names import format_robot_username
from flask import abort


def robot_view(name, token, count=None):
  return {
    'name': name,
    'token': token,
    'permission_count': count
  }


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


@resource('/v1/user/robots')
@internal_only
class UserRobotList(ApiResource):
  """ Resource for listing user robots. """
  @require_user_admin
  @nickname('getUserRobots')
  def get(self):
    """ List the available robots for the user. """
    user = get_authenticated_user()
    robots = model.list_entity_robot_tuples(user.username)
    return {
      'robots': [robot_view(name, password, count) for name, password, count in robots]
    }


@resource('/v1/user/robots/<robot_shortname>')
@path_param('robot_shortname', 'The short name for the robot, without any user or organization prefix')
@internal_only
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.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.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.delete_robot(format_robot_username(parent.username, robot_shortname))
    log_action('delete_robot', parent.username, {'robot': robot_shortname})
    return 'Deleted', 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')
  def get(self, orgname):
    """ List the organization's robots. """
    permission = OrganizationMemberPermission(orgname)
    if permission.can():
      robots = model.list_entity_robot_tuples(orgname)
      return {
        'robots': [robot_view(name, password, count) for name, password, count in robots]
      }

    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.get_organization(orgname)
      robot, password = model.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.get_organization(orgname)
      robot, password = model.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.delete_robot(format_robot_username(orgname, robot_shortname))
      log_action('delete_robot', orgname, {'robot': robot_shortname})
      return 'Deleted', 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')
@internal_only
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, password = model.get_robot(robot_shortname, parent)
    permissions = model.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.get_organization(orgname)
      robot, password = model.get_robot(robot_shortname, parent)
      permissions = model.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')
@internal_only
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.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.get_organization(orgname)
      robot, password = model.regenerate_robot_token(robot_shortname, parent)
      log_action('regenerate_robot_token', orgname,  {'robot': robot_shortname})
      return robot_view(robot.username, password)

    raise Unauthorized()