from django.db import models
from django.contrib.contenttypes.models import ContentType


class Module(models.Model):
    title = models.CharField(max_length=255)
    slug = models.SlugField()

    def __unicode__(self):
        return self.title

    def get_absolute_url(self):
        return "/m/" + self.slug


class ModuleTab(models.Model):
    module = models.ForeignKey(Module)
    title = models.CharField(max_length=64)
    text = models.TextField()
    model = models.ForeignKey("ModelExtra")
    is_default = models.BooleanField(default=False)
    order = models.IntegerField(default=1)    
    is_displayed = models.BooleanField(default=True)
    
    class Meta:
        ordering = ['-is_default', 'order']

    def __unicode__(self):
        return self.title

    def model_class(self):
        return self.model.model.model_class()

    def get_list(self, options):
        return self.model_class().get_list(options)


class ModelExtra(models.Model):
    model = models.ForeignKey(ContentType)
    friendly_name = models.CharField(max_length=128)
    has_comments = models.BooleanField(default=False)
    buttons = models.ManyToManyField('ModelButton', through='ModelExtraButton', blank=True)    

    def __unicode__(self):
        return self.friendly_name


class ModelSort(models.Model):
    model = models.ForeignKey(ModelExtra)
    operator = models.CharField(max_length=1)
    field_name = models.CharField(max_length=64)
    friendly_name = models.CharField(max_length=128)

    def __unicode__(self):
        return self.friendly_name


class ModelButton(models.Model):
    name = models.CharField(max_length=64)        
    template = models.TextField(blank=True)

    def __unicode__(self):
        return self.name


class ModelExtraButton(models.Model):
    modelextra = models.ForeignKey(ModelExtra)
    modelbutton = models.ForeignKey(ModelButton)
    parameters = models.CharField(max_length=64, blank=True)