from flask import current_app
from .base import db


class DomainTemplate(db.Model):
    __tablename__ = "domain_template"
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(255), index=True, unique=True)
    description = db.Column(db.String(255))
    records = db.relationship('DomainTemplateRecord',
                              back_populates='template',
                              cascade="all, delete-orphan")

    def __repr__(self):
        return '<DomainTemplate {0}>'.format(self.name)

    def __init__(self, name=None, description=None):
        self.id = None
        self.name = name
        self.description = description

    def replace_records(self, records):
        try:
            self.records = []
            for record in records:
                self.records.append(record)
            db.session.commit()
            return {
                'status': 'ok',
                'msg': 'Template records have been modified'
            }
        except Exception as e:
            current_app.logger.error(
                'Cannot create template records Error: {0}'.format(e))
            db.session.rollback()
            return {
                'status': 'error',
                'msg': 'Can not create template records'
            }

    def create(self):
        try:
            db.session.add(self)
            db.session.commit()
            return {'status': 'ok', 'msg': 'Template has been created'}
        except Exception as e:
            current_app.logger.error(
                'Can not update zone template table. Error: {0}'.format(e))
            db.session.rollback()
            return {
                'status': 'error',
                'msg': 'Can not update zone template table'
            }

    def delete_template(self):
        try:
            self.records = []
            db.session.delete(self)
            db.session.commit()
            return {'status': 'ok', 'msg': 'Template has been deleted'}
        except Exception as e:
            current_app.logger.error(
                'Can not delete zone template. Error: {0}'.format(e))
            db.session.rollback()
            return {'status': 'error', 'msg': 'Can not delete zone template'}