# -*- coding: utf-8 -*-

import datetime

from gluon import *

class ClassesOTCSubAvailable:
    def __init__(self, cotcsaID):
        db = current.db

        self.id = cotcsaID
        self.row = db.classes_otc_sub_avail(cotcsaID)

    def accept(self):
        """
        Set status to accepted and decline all other offers for this class
        :return: None
        """
        db = current.db

        # Accept this offer
        self.row.Accepted = True
        self.row.update_record()

        # Set teacher as sub
        cotc = db.classes_otc(self.row.classes_otc_id)
        cotc.auth_teacher_id = self.row.auth_teacher_id
        cotc.update_record()

        # Reject all others
        query = (db.classes_otc_sub_avail.classes_otc_id == self.row.classes_otc_id) & \
                (db.classes_otc_sub_avail.id != self.id)
        # db(query).update(Accepted = False)
        rows = db(query).select(db.classes_otc_sub_avail.ALL)
        for row in rows:
            cotcsa = ClassesOTCSubAvailable(row.id)
            cotcsa.decline()

        # Set status to normal for class otc (Remove "open" status)
        db.classes_otc[self.row.classes_otc_id] = dict(Status = None)

        # Notify teachers offering to sub this class
        self._accept_send_mail()


    def _accept_send_mail(self):
        """
        Notify all teachers offering to sub class that a substitute has been found
        :return:
        """
        from .os_mail import OsMail
        from .os_teacher import Teacher

        T = current.T

        osmail = OsMail()
        result = osmail.render_email_template(
            'teacher_sub_offer_accepted',
            classes_otc_sub_avail_id=self.id,
            return_html=True
        )

        html = result['html_message']

        result = osmail.send(
            message_html=html,
            message_subject=T("Sub offer accepted"),
            auth_user_id=self.row.auth_teacher_id
        )

        return result


    def decline(self):
        """
        Set status to declined
        :return: None
        """
        self.row.Accepted = False
        self.row.update_record()

        self._decline_send_mail()


    def _decline_send_mail(self):
        """
        Notify teacher that he/she won't be subbing this class
        :return:
        """
        from .os_mail import OsMail
        from .os_teacher import Teacher

        T = current.T

        osmail = OsMail()
        result = osmail.render_email_template(
            'teacher_sub_offer_declined',
            classes_otc_sub_avail_id=self.id,
            return_html=True
        )

        html = result['html_message']

        result = osmail.send(
            message_html=html,
            message_subject=T("Sub offer declined"),
            auth_user_id=self.row.auth_teacher_id
        )

        return result