import features

from flask import request

from app import all_queues, userfiles, namespace_gc_queue
from auth.permissions import ReadRepositoryPermission, ModifyRepositoryPermission, AdministerRepositoryPermission
from data import model, database
from endpoints.api.build import get_job_config, _get_build_status
from endpoints.api.superuser_models_interface import BuildTrigger
from endpoints.api.superuser_models_interface import SuperuserDataInterface, LogEntryPage, LogEntry, Organization, User, \
  ServiceKey, Approval, RepositoryBuild, AggregatedLogEntry


def _create_log(log, log_kind):
  account_organization = None
  account_username = None
  account_email = None
  account_robot = None
  try:
    account_organization = log.account.organization
    account_username = log.account.username
    account_email = log.account.email
    account_robot = log.account.robot
  except AttributeError:
    pass

  performer_robot = None
  performer_username = None
  performer_email = None

  try:
    performer_robot = log.performer.robot
    performer_username = log.performer.username
    performer_email = log.performer.email
  except AttributeError:
    pass

  return LogEntry(log.metadata_json, log.ip, log.datetime, performer_email, performer_username,
                  performer_robot, account_organization, account_username,
                  account_email, account_robot, log_kind[log.kind_id])


def _create_user(user):
  if user is None:
    return None
  return User(user.username, user.email, user.verified, user.enabled, user.robot)


def _create_key(key):
  approval = None
  if key.approval is not None:
    approval = Approval(_create_user(key.approval.approver), key.approval.approval_type, key.approval.approved_date,
                        key.approval.notes)

  return ServiceKey(key.name, key.kid, key.service, key.jwk, key.metadata, key.created_date, key.expiration_date,
                    key.rotation_duration, approval)


class ServiceKeyDoesNotExist(Exception):
  pass


class ServiceKeyAlreadyApproved(Exception):
  pass


class InvalidRepositoryBuildException(Exception):
  pass


class PreOCIModel(SuperuserDataInterface):
  """
  PreOCIModel implements the data model for the SuperUser using a database schema
  before it was changed to support the OCI specification.
  """

  def get_repository_build(self, uuid):
    try:
      build = model.build.get_repository_build(uuid)
    except model.InvalidRepositoryBuildException as e:
      raise InvalidRepositoryBuildException(e.message)

    repo_namespace = build.repository_namespace_user_username
    repo_name = build.repository_name

    can_read = ReadRepositoryPermission(repo_namespace, repo_name).can()
    can_write = ModifyRepositoryPermission(repo_namespace, repo_name).can()
    can_admin = AdministerRepositoryPermission(repo_namespace, repo_name).can()
    job_config = get_job_config(build.job_config)
    phase, status, error = _get_build_status(build)
    url = userfiles.get_file_url(self.resource_key, request.remote_addr, requires_cors=True)

    return RepositoryBuild(build.uuid, build.logs_archived, repo_namespace, repo_name, can_write, can_read,
                           _create_user(build.pull_robot), build.resource_key,
                           BuildTrigger(build.trigger.uuid, build.trigger.service.name,
                                        _create_user(build.trigger.pull_robot), can_read, can_admin, True),
                           build.display_name, build.display_name, build.started, job_config, phase, status, error, url)

  def delete_service_key(self, kid):
    try:
      key = model.service_keys.delete_service_key(kid)
    except model.ServiceKeyDoesNotExist:
      raise ServiceKeyDoesNotExist
    return _create_key(key)

  def update_service_key(self, kid, name=None, metadata=None):
    model.service_keys.update_service_key(kid, name, metadata)

  def set_key_expiration(self, kid, expiration_date):
    model.service_keys.set_key_expiration(kid, expiration_date)

  def get_service_key(self, kid, service=None, alive_only=True, approved_only=True):
    try:
      key = model.service_keys.get_service_key(kid, approved_only=approved_only, alive_only=alive_only)
      return _create_key(key)
    except model.ServiceKeyDoesNotExist:
      raise ServiceKeyDoesNotExist

  def approve_service_key(self, kid, approver, approval_type, notes=''):
    try:
      key = model.service_keys.approve_service_key(kid, approval_type, approver=approver, notes=notes)
      return _create_key(key)
    except model.ServiceKeyDoesNotExist:
      raise ServiceKeyDoesNotExist
    except model.ServiceKeyAlreadyApproved:
      raise ServiceKeyAlreadyApproved

  def generate_service_key(self, service, expiration_date, kid=None, name='', metadata=None, rotation_duration=None):
    (private_key, key) = model.service_keys.generate_service_key(service, expiration_date, metadata=metadata, name=name)

    return private_key, key.kid

  def list_all_service_keys(self):
    keys = model.service_keys.list_all_keys()
    return [_create_key(key) for key in keys]

  def change_organization_name(self, old_org_name, new_org_name):
    org = model.organization.get_organization(old_org_name)
    if new_org_name is not None:
      org = model.user.change_username(org.id, new_org_name)

    return Organization(org.username, org.email)

  def mark_organization_for_deletion(self, name):
    org = model.organization.get_organization(name)
    model.user.mark_namespace_for_deletion(org, all_queues, namespace_gc_queue, force=True)

  def take_ownership(self, namespace, authed_user):
    entity = model.user.get_user_or_org(namespace)
    if entity is None:
      return None, False

    was_user = not entity.organization
    if entity.organization:
      # Add the superuser as an admin to the owners team of the org.
      model.organization.add_user_as_admin(authed_user, entity)
    else:
      # If the entity is a user, convert it to an organization and add the current superuser
      # as the admin.
      model.organization.convert_user_to_organization(entity, authed_user)
    return entity.id, was_user

  def update_enabled(self, username, enabled):
    user = model.user.get_nonrobot_user(username)
    model.user.update_enabled(user, bool(enabled))

  def update_email(self, username, email, auto_verify):
    user = model.user.get_nonrobot_user(username)
    model.user.update_email(user, email, auto_verify)

  def change_password(self, username, password):
    user = model.user.get_nonrobot_user(username)
    model.user.change_password(user, password)

  def mark_user_for_deletion(self, username):
    user = model.user.get_nonrobot_user(username)
    model.user.mark_namespace_for_deletion(user, all_queues, namespace_gc_queue, force=True)

  def create_reset_password_email_code(self, email):
    code = model.user.create_reset_password_email_code(email)
    return code.code

  def get_nonrobot_user(self, username):
    user = model.user.get_nonrobot_user(username)
    if user is None:
      return None
    return _create_user(user)

  def create_install_user(self, username, password, email):
    prompts = model.user.get_default_user_prompts(features)
    user = model.user.create_user(username, password, email, auto_verify=not features.MAILING,
                                  email_required=features.MAILING, prompts=prompts)

    return_user = _create_user(user)
    # If mailing is turned on, send the user a verification email.
    if features.MAILING:
      confirmation = model.user.create_confirm_email_code(user)
      return return_user, confirmation.code
    return return_user, ''

  def get_active_users(self, disabled=True):
    users = model.user.get_active_users(disabled=disabled)
    return [_create_user(user) for user in users]

  def get_organizations(self):
    return [Organization(org.username, org.email) for org in model.organization.get_organizations()]

  def get_aggregated_logs(self, start_time, end_time):
    aggregated_logs = model.log.get_aggregated_logs(start_time, end_time)
    return [AggregatedLogEntry(log.count, log.kind_id, log.day, start_time) for log in aggregated_logs]

  def get_logs_query(self, start_time, end_time, page_token=None):
    logs_query = model.log.get_logs_query(start_time, end_time)
    logs, next_page_token = model.modelutil.paginate(logs_query, database.LogEntry, descending=True,
                                                     page_token=page_token, limit=20)
    kinds = model.log.get_log_entry_kinds()
    return LogEntryPage([_create_log(log, kinds) for log in logs], next_page_token)


pre_oci_model = PreOCIModel()