from django.shortcuts import render
from . import models
from django.template import loader

import functools

def rerender(funky):
	@functools.wraps(funky)
	def wrap(req,*args,**kwargs):
		with open('main/utils/navs') as b:
			navs=parsecat(b,4)
		namednavs=[{'id':blah[0], 'link':blah[1], 'text':blah[2], 'align':int(blah[3])} for blah in navs['']]
		out=funky(*args,**kwargs)
		temp=loader.get_template('main/nav.html')
		out['nav']=temp.render({"navs":namednavs},None)
		return render(req, 'main/temp.html', out)
	return wrap

def parsecat(file,n):
	if not isinstance(file,str):
		# Assume open handle
		stuff=file.read()
	else:
		with open(f'main/pages/{file}') as b:
			stuff=b.read()
	cats=stuff.split('\n\n')
	out={}
	head=''
	out['']=[]
	for cat in cats:
		if ':' in cat[:cat.index('\n')]:
			# We have a category name
			head,cat=cat.split('\n',1)
			head=head[:-1]
			out[head]=[]
		else: head=''
		for line in cat.split('\n'):
			lin=line.split(',',n-1)
			pad=n-len(lin)
			lin.extend(['']*pad)
			out[head].append(lin)
	if out['']==[]: del(out[''])
	return out

@rerender
def index():
	books=models.Book.objects.all()
	#Make table I guess, for now just get data up there
	contents='<br/>\n'.join([f'<a href="/books/{book.url}">{book}</a> - {book.last_updated}' for book in books])
	return {'title':'Booklist','content':contents+"<br/>\nYou should be able to read books now.",'date':'2021/10/24'}

@rerender
def book(bookurl):
	book=models.Book.objects.filter(url=bookurl)[0]
	chapters=models.Chapter.objects.filter(book=book).order_by('added')
	return {'title':book.title,'content':'<a href="/books/">Top</a><br/>\n'+'<br/>\n'.join([f'<a href="/books/{book.url}/{chap.number}">{chap}</a> - {chap.added}' for chap in chapters]),'date':book.last_updated}

@rerender
def chapter(bookurl,chapnum):
	book=models.Book.objects.filter(url=bookurl)[0]
	chapter=models.Chapter.objects.filter(book=book,number=chapnum)[0]
	text='<p>'+chapter.contents.replace('<','&lt;').replace('>','&gt;').replace('\n\n','</p><p>').replace('\n','<br/>')+'</p>'
	return {'title':chapter,'content':'<p>Navigation buttons will come later...</p>\n'+text,'date':chapter.added}