#    Society Self-Service
#    Copyright © 2018-2019  Yingtong Li (RunasSudo)
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <https://www.gnu.org/licenses/>.

from django.db import models

import re

class Member(models.Model):
	email = models.CharField(max_length=100)
	
	first_name = models.CharField(max_length=100)
	last_name = models.CharField(max_length=100)
	
	student_id = models.CharField(max_length=8)
	is_msa = models.BooleanField()
	
	YEARS = (
		(0, 'Year A'),
		(1, 'Year 1'),
		(2, 'Year 2'),
		(3, 'Year 3B'),
		(4, 'Year 4C'),
		(5, 'Year 5D'),
		(97, 'BMedSc(Hons)'),
		(98, 'PhD'),
		(99, 'Intermission'),
	)
	year = models.IntegerField(choices=YEARS)
	
	phone = models.CharField(max_length=20)
	
	expires = models.DateField()
	
	class Meta:
		ordering = ['id']
	
	def __str__(self):
		return self.first_name + ' ' + self.last_name
	
	def validation_problems(self):
		result = []
		
		if not self.email.strip():
			result.append('Email is required')
		if not self.first_name.strip():
			result.append('First name is required')
		if not self.last_name.strip():
			result.append('Last name is required')
		if not self.student_id.strip():
			result.append('Student ID is required')
		if not any(x[0] == self.year for x in Member.YEARS):
			result.append('A valid year is required')
		if not self.phone.strip():
			result.append('Phone number is required')
		
		if not self.email.strip().endswith('@student.monash.edu'):
			result.append('Email must be a Monash student email address')
		if not re.match(r'^[0-9]{8}$', self.student_id.strip()):
			result.append('Student ID must be an 8 digit number')
		if not re.match(r'^[0-9+ ]+$', self.phone.strip()):
			result.append('Phone number must contain only numbers and +')
		
		return result