"""File containing Members app models."""

from django.db import models
from django.utils import timezone
from django.utils.translation import ugettext_lazy as _

import csv


class BaseMember(models.Model):
    """Abstract base model for member."""

    first_name = models.CharField(_("First name"), max_length=127)
    last_name = models.CharField(_("Last name"), max_length=127)
    email = models.EmailField(_("Email"), unique=True)
    POR = models.CharField(_("Place of residence"),
                           max_length=255)  # place of residence
    AYY = models.BooleanField(_("AYY"), default=False)
    jas = models.BooleanField(_("JAS"), default=False)

    class Meta:
        """Meta for base member model."""

        abstract = True

    def __str__(self):
        """Return member last name, first name and email."""
        return "{} {}, {}".format(self.last_name, self.first_name, self.email)

    @staticmethod
    def from_csv(data):
        clean_data = data.strip().split('\n')
        csv_reader = csv.reader(clean_data)

        members = []
        for line in csv_reader:
            try:
                line = list(map(lambda x: x.strip(), line))
                print(line)

                member = Member.from_array([
                    line[0], line[1], line[2], line[3],
                    bool(int(line[4])), bool(int(line[5]))
                ])
                members.append(member)
            except:
                return False

        for member in members:
            member.save()

        return True

    def as_array(self):
        """Return member model as an array."""
        return [
            self.first_name,
            self.last_name,
            self.email,
            self.POR,
            int(self.AYY),
            int(self.jas)
        ]


class Request(BaseMember):
    """Member request model represents one member request."""

    submitted = models.DateTimeField(_('Submitted'), default=timezone.now)

    def to_member(self):
        """Convert array to member model."""
        member = Member.from_array(self.as_array())

        return member


class Payment(models.Model):
    """Payment model representing one payment event."""

    date = models.DateTimeField(_('Date'), default=timezone.now)
    source = models.CharField(_('Source'), choices=[
        ('AYY', _('AYY')),
        ('cash', _('Cash')),
        ('bank_transfer', _('Bank transfer')),
    ], max_length=255)

    member = models.ForeignKey('Member',
                               on_delete=models.PROTECT,
                               blank=True,
                               null=True,
                               related_name='payments')

    def __str__(self):
        """Return payment id and date."""
        return 'Payment no. {}, {}'.format(self.id, str(self.date))


class Member(BaseMember):
    """Member model represets one member on the registry."""

    created = models.DateTimeField(_('Created'), default=timezone.now)

    def last_paid(self):
        """Return member's last payment."""
        try:
            payments = Payment.objects.filter(member=self)
            latest = payments.latest('date')
            date = latest.date
            return date
        except Payment.DoesNotExist:
            return None

    @staticmethod
    def from_array(array):
        """Create member from array."""
        if len(array) != 6:
            raise Exception("Invalid array length for member instantiation")

        return Member.objects.create(
            first_name=array[0],
            last_name=array[1],
            email=array[2],
            POR=array[3],
            AYY=bool(array[4]),
            jas=bool(array[5]),
        )


# To avoid problems with a cyclical import, this is at the bottom of the file
from members.forms import MemberForm  # nopep8