# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
# GPL 2013
from __future__ import division, with_statement
import os
import json

from django.shortcuts import render_to_response, get_object_or_404, get_list_or_404
from django.template import RequestContext
from django.http import HttpResponse, HttpResponseRedirect, HttpResponseNotFound, Http404
from django.views.decorators.http import condition
from django import forms
from django.db.models import F
from django.conf import settings

from ox.django.http import HttpFileResponse
from ox.django.shortcuts import render_to_json_response, json_response
import models

class ChunkForm(forms.Form):
    chunk = forms.FileField()
    done = forms.IntegerField(required=False)

def chunk(request, slug):
    if request.method == 'POST':
        item = get_object_or_404(models.Item, slug=slug)
        form = ChunkForm(request.POST, request.FILES)
        canEdit = True
        if form.is_valid() and canEdit:
            f = form.cleaned_data['chunk']
            response = {
                'resultUrl': request.build_absolute_uri(item.get_absolute_url())
            }
            if item.filename:
                name = item.filename
            else:
                name = f.name
            if not item.save_chunk(f.read(), name):
                response['result'] = 'failed'
            elif form.cleaned_data['done']:
                item.done = True
                item.save()
                response['done'] = 1
                response['result'] = 1
            else:
                response['result'] = 1
            return render_to_json_response(response)
    response = {
        'result': -1,
        'fileUrl': '/'
    }
    return render_to_json_response(response)

def add(request):
    if request.method == 'POST':
        if request.POST.get('firefogg', False):
            if not request.session.session_key:
                request.session.save()
                request.session.modified = True
            file = models.Item()
            file.user = request.user
            file.filename = request.POST.get('name', '')
            file.uploader = request.session.session_key
            file.save()
            response = {
                'result': 1,
                'maxRetry': 10,
                'uploadUrl': request.build_absolute_uri("%s/chunk" % file.get_absolute_url())
            }
            return render_to_json_response(response)
        # Save any files that were uploaded (ignoring empty form fields)
        if 'file' in request.FILES:
            new_file = request.FILES['file']
            file = models.Item(filename=new_file.name)
            file.user = request.user
            file.done = True
            file.file.save(new_file.name, new_file)
            os.chmod(file.file.path, 0644)
            file.save()
            if request.POST.get('api', False):
                return HttpResponse(request.build_absolute_uri(file.get_absolute_url()), content_type="text/plain")
            return HttpResponseRedirect(file.get_absolute_url())

    #no upload
    return HttpResponseRedirect('/')

def index(request):
    items = None
    if not request.user.is_anonymous():
        items = request.user.items.order_by('filename')
    context = RequestContext(request, {
        'PREFIX': settings.PREFIX,
        'anonymous': request.user.is_anonymous(),
        'items': items,
    })
    return render_to_response('index.html', context)

def item(request, slug):
    item = get_object_or_404(models.Item, slug=slug)
    editable = item.editable(request.user)
    context = RequestContext(request, {
        'PREFIX': settings.PREFIX,
        'item': item,
        'editable': json.dumps(editable)
    })
    return render_to_response('item.html', context)

def pdf(request, slug, filename):
    item = get_object_or_404(models.Item, slug=slug)
    if filename == 'download':
        filename = item.filename
    filename = filename.encode('utf-8')
    content_type = None
    return HttpFileResponse(item.file.path.encode('utf-8'),
                            content_type=content_type, filename=filename)

def save(request):
    data = json.loads(request.POST['data'])
    item = get_object_or_404(models.Item, slug=data['id'])
    response = json_response({})
    if item.editable(request.user):
        item.overlay = data['overlay']
        item.save()
    else:
        response = json_response(status=403, text='permission denied')
    return render_to_json_response(response)