from django.db import models


class Volunteer(models.Model):
    realname = models.CharField(max_length=200, null=True)
    email = models.CharField(max_length=200, null=True)
    username = models.CharField(max_length=200, null=True)

    class Meta:
        abstract = True

class Project(Volunteer):
    name = models.CharField(max_length=200)
    start = models.DateTimeField('start date')
    # contact = models.ForeignKey(Volonteer, on_delete = models.CASCADE, null = True)

    # pid = models.IntegerField(null=True) # automaticly generated
    @property
    def pid(self):
        return "hurzel " + str(id)


    def __str__(self):
        return self.name

class HonoraryCertificate(Volunteer):
    request_url = models.CharField(max_length=400) #can urls be longer in theory?
    number = models.IntegerField(null = True)

    def __str__(self):
        return "Certificate for " + self.realname

#abstract class for Library, IFG, ...
class Grant(Volunteer):
    cost = models.CharField(max_length=10)
    notes = models.CharField(max_length=500)

    class Meta:
        abstract = True

# should be identical for ELitStip and Software?
class Library(Grant):
    library = models.CharField(max_length=200)
    duration = models.CharField(max_length=100)

    def __str__(self):
        return self.library

class IFG(Grant):
    url = models.CharField(max_length=400) #can urls be longer in theory?

    def __str__(self):
        return "IFG-Anfrage von " + self.realname