from .models import Page,Redirect

class AutoPageConverter:
	regex='.*'
	def to_python(self,value):
		try: p=Page.objects.get(url=value)
		except Page.DoesNotExist: raise ValueError(f'No such page {value}')
		if not p: raise ValueError(f'No such page {value}')
		return p
	def to_url(self,value):
		if not isinstance(value,Page): raise ValueError('Given value is not a Page')
		return p.url

class RedirectConverter:
	regex='.*'
	def to_python(self,value):
		try: r=Redirect.objects.get(match=value)
		except Page.DoesNotExist: raise ValueError(f'No such redirect {value}')
		if not r: raise ValueError(f'No such redirect {value}')
		return r
	def to_url(self,value):
		if not isinstance(value,Redirect): raise ValueError('Given value is not a Redirect')
		return p.match