"""
Barn Web App - A collection of web-apps for my family's personal use,
including a recipe database.
Copyright © 2023 Benjamin Stadlbauer

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.

This program comes with a copy of the GNU Affero General Public License
file at the root of this project.
"""

from django.db import models
from django.contrib.auth.models import User
from django.urls import reverse

class Recipe(models.Model):
	title = models.CharField(max_length=100, null=False, blank=False)
	slug = models.SlugField(unique=True)

	def __str__(self) -> str:
		return self.title

	def get_absolute_url(self):
		return reverse('recipe', kwargs={'slug': self.slug})

class Version(models.Model):
	label = models.CharField(max_length=20, default='Original')
	slug = models.SlugField(max_length=20, default='original')
	body = models.TextField(null=True, blank=True)
	user = models.ForeignKey(User, on_delete=models.PROTECT, null=False, blank=False)
	author = models.CharField(max_length=30, blank=True)
	recipe = models.ForeignKey(Recipe, on_delete=models.PROTECT, null=False, blank=False, related_name='versions')

	def __str__(self) -> str:
		return self.recipe.title + ' - ' + self.label

	def get_absolute_url(self):
		return reverse('version', kwargs={'slug_recipe': self.recipe.slug, 'slug_version': self.slug})

class Ingredient(models.Model):
	text = models.CharField(max_length=50, null=False, blank=False)
	version = models.ForeignKey(Version, on_delete=models.CASCADE, null=False, blank=False, related_name='ingredients')

	def __str__(self) -> str:
		return self.text + ' for ' + str(self.version)