import uuid

from flask import (
    Blueprint,
    jsonify,
    request
)

from app import api_user, encryption
from app.aws_sqs import add_notification_to_queue
from app.dao import (templates_dao, notifications_dao)
from app.schemas import (
    email_notification_schema,
    sms_template_notification_schema,
    notification_status_schema
)
from app.celery.tasks import send_sms
from sqlalchemy.orm.exc import NoResultFound

notifications = Blueprint('notifications', __name__)


def create_notification_id():
    return str(uuid.uuid4())


@notifications.route('/<string:notification_id>', methods=['GET'])
def get_notifications(notification_id):
    try:
        notification = notifications_dao.get_notification(api_user['client'], notification_id)
        return jsonify({'notification': notification_status_schema.dump(notification).data}), 200
    except NoResultFound:
        return jsonify(result="error", message="not found"), 404


@notifications.route('/sms', methods=['POST'])
def create_sms_notification():
    notification, errors = sms_template_notification_schema.load(request.get_json())
    if errors:
        return jsonify(result="error", message=errors), 400

    try:
        templates_dao.get_model_templates(template_id=notification['template'], service_id=api_user['client'])
    except NoResultFound:
        return jsonify(result="error", message={'template': ['Template not found']}), 400

    notification_id = create_notification_id()

    send_sms.apply_async((
        api_user['client'],
        notification_id,
        encryption.encrypt(notification)),
        queue='sms')
    return jsonify({'notification_id': notification_id}), 201


@notifications.route('/email', methods=['POST'])
def create_email_notification():
    resp_json = request.get_json()
    notification, errors = email_notification_schema.load(resp_json)
    if errors:
        return jsonify(result="error", message=errors), 400
    notification_id = add_notification_to_queue(api_user['client'], "admin", 'email', notification)
    return jsonify({'notification_id': notification_id}), 201


@notifications.route('/sms/service/<service_id>', methods=['POST'])
def create_sms_for_service(service_id):

    resp_json = request.get_json()

    notification, errors = sms_template_notification_schema.load(resp_json)
    if errors:
        return jsonify(result="error", message=errors), 400

    template_id = notification['template']
    job_id = notification['job']

    # TODO: job/job_id is in notification and can used to update job status

    # TODO: remove once beta is reading notifications from the queue
    template = templates_dao.get_model_templates(template_id)

    if template.service.id != uuid.UUID(service_id):
        message = "Invalid template: id {} for service id: {}".format(template.id, service_id)
        return jsonify(result="error", message=message), 400

    notification_id = add_notification_to_queue(service_id, template_id, 'sms', notification)
    return jsonify({'notification_id': notification_id}), 201