Sith/core/views/page.py

# -*- coding:utf-8 -*
#
# Copyright 2016,2017
# - Skia <skia@libskia.so>
#
# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
# http://ae.utbm.fr.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License a 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 General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
# Place - Suite 330, Boston, MA 02111-1307, USA.
#
#

# This file contains all the views that concern the page model
from django.urls import reverse_lazy
from django.views.generic import ListView, DetailView
from django.views.generic.edit import UpdateView, CreateView, DeleteView
from django.forms.models import modelform_factory
from django.http import Http404
from django.shortcuts import redirect

from core.models import Page, PageRev, LockError
from core.views.forms import MarkdownInput, PageForm, PagePropForm
from core.views import CanViewMixin, CanEditMixin, CanEditPropMixin, CanCreateMixin


class CanEditPagePropMixin(CanEditPropMixin):
    def dispatch(self, request, *args, **kwargs):
        res = super(CanEditPagePropMixin, self).dispatch(request, *args, **kwargs)
        if self.object.is_club_page:
            raise Http404
        return res


class PageListView(CanViewMixin, ListView):
    model = Page
    template_name = "core/page_list.jinja"


class PageView(CanViewMixin, DetailView):
    model = Page
    template_name = "core/page_detail.jinja"

    def dispatch(self, request, *args, **kwargs):
        res = super(PageView, self).dispatch(request, *args, **kwargs)
        if self.object and self.object.need_club_redirection:
            return redirect("club:club_view", club_id=self.object.club.id)
        return res

    def get_object(self):
        self.page = Page.get_page_by_full_name(self.kwargs["page_name"])
        return self.page

    def get_context_data(self, **kwargs):
        context = super(PageView, self).get_context_data(**kwargs)
        if "page" not in context.keys():
            context["new_page"] = self.kwargs["page_name"]
        return context


class PageHistView(CanViewMixin, DetailView):
    model = Page
    template_name = "core/page_hist.jinja"

    def dispatch(self, request, *args, **kwargs):
        res = super(PageHistView, self).dispatch(request, *args, **kwargs)
        if self.object.need_club_redirection:
            return redirect("club:club_hist", club_id=self.object.club.id)
        return res

    def get_object(self):
        self.page = Page.get_page_by_full_name(self.kwargs["page_name"])
        return self.page


class PageRevView(CanViewMixin, DetailView):
    model = Page
    template_name = "core/page_detail.jinja"

    def dispatch(self, request, *args, **kwargs):
        res = super(PageRevView, self).dispatch(request, *args, **kwargs)
        if self.object.need_club_redirection:
            return redirect(
                "club:club_view_rev", club_id=self.object.club.id, rev_id=kwargs["rev"]
            )
        return res

    def get_object(self):
        self.page = Page.get_page_by_full_name(self.kwargs["page_name"])
        return self.page

    def get_context_data(self, **kwargs):
        context = super(PageRevView, self).get_context_data(**kwargs)
        if self.page is not None:
            context["page"] = self.page
            try:
                rev = self.page.revisions.get(id=self.kwargs["rev"])
                context["rev"] = rev
            except:
                # By passing, the template will just display the normal page without taking revision into account
                pass
        else:
            context["new_page"] = self.kwargs["page_name"]
        return context


class PageCreateView(CanCreateMixin, CreateView):
    model = Page
    form_class = PageForm
    template_name = "core/page_prop.jinja"

    def get_initial(self):
        init = {}
        if "page" in self.request.GET.keys():
            page_name = self.request.GET["page"]
            parent_name = "/".join(page_name.split("/")[:-1])
            parent = Page.get_page_by_full_name(parent_name)
            if parent is not None:
                init["parent"] = parent.id
            init["name"] = page_name.split("/")[-1]
        return init

    def get_context_data(self, **kwargs):
        context = super(PageCreateView, self).get_context_data(**kwargs)
        context["new_page"] = True
        return context

    def form_valid(self, form):
        form.instance.set_lock(self.request.user)
        ret = super(PageCreateView, self).form_valid(form)
        return ret


class PagePropView(CanEditPagePropMixin, UpdateView):
    model = Page
    form_class = PagePropForm
    template_name = "core/page_prop.jinja"
    slug_field = "_full_name"
    slug_url_kwarg = "page_name"

    def get_object(self):
        o = super(PagePropView, self).get_object()
        # Create the page if it does not exists
        # if p == None:
        #    parent_name = '/'.join(page_name.split('/')[:-1])
        #    name = page_name.split('/')[-1]
        #    if parent_name == "":
        #        p = Page(name=name)
        #    else:
        #        parent = Page.get_page_by_full_name(parent_name)
        #        p = Page(name=name, parent=parent)
        self.page = o
        try:
            self.page.set_lock_recursive(self.request.user)
        except LockError as e:
            raise e
        return self.page


class PageEditViewBase(CanEditMixin, UpdateView):
    model = PageRev
    form_class = modelform_factory(
        model=PageRev, fields=["title", "content"], widgets={"content": MarkdownInput}
    )
    template_name = "core/pagerev_edit.jinja"

    def get_object(self):
        self.page = Page.get_page_by_full_name(self.kwargs["page_name"])
        return self._get_revision()

    def _get_revision(self):
        if self.page is not None:
            # First edit
            if self.page.revisions.all() is None:
                rev = PageRev(author=self.request.user)
                rev.save()
                self.page.revisions.add(rev)
            try:
                self.page.set_lock(self.request.user)
            except LockError as e:
                raise e
            return self.page.revisions.last()
        return None

    def get_context_data(self, **kwargs):
        context = super(PageEditViewBase, self).get_context_data(**kwargs)
        if self.page is not None:
            context["page"] = self.page
        else:
            context["new_page"] = self.kwargs["page_name"]
        return context

    def form_valid(self, form):
        # TODO : factor that, but first make some tests
        rev = form.instance
        new_rev = PageRev(title=rev.title, content=rev.content)
        new_rev.author = self.request.user
        new_rev.page = self.page
        form.instance = new_rev
        return super(PageEditViewBase, self).form_valid(form)


class PageEditView(PageEditViewBase):
    def dispatch(self, request, *args, **kwargs):
        res = super(PageEditView, self).dispatch(request, *args, **kwargs)
        if self.object and self.object.page.need_club_redirection:
            return redirect("club:club_edit_page", club_id=self.object.page.club.id)
        return res


class PageDeleteView(CanEditPagePropMixin, DeleteView):
    model = Page
    template_name = "core/delete_confirm.jinja"
    pk_url_kwarg = "page_id"

    def get_success_url(self, **kwargs):
        return reverse_lazy("core:page_list")