430 lines
14 KiB
Python
430 lines
14 KiB
Python
from django.shortcuts import get_object_or_404, redirect, resolve_url
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from django.views.generic.detail import DetailView, SingleObjectMixin, View
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from django.views.generic.list import ListView, MultipleObjectMixin
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from django.views.generic.edit import CreateView, FormView, UpdateView, DeleteView
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from django.http import FileResponse, HttpResponse, JsonResponse
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from django.db import IntegrityError
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from django.db.models import Q, Count, Sum
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from django.db import transaction
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from django.utils.timezone import now
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from django.urls import reverse
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from django.template.loader import render_to_string
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import json
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import os.path
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import re
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from interface.views import EnsembleMixin, ProjectMixin, AuthorizedResourceMixin
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from interface.models import Project
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from library.models import Collection, Work, Document, Section
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from library.imslp import INSTRUMENT_TAGS, INSTRUMENTS
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from library import forms, models
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from library.pdf_utils import extract_pages, extract_and_concat
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"""
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"""
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class ProjectItemListView(ProjectMixin, ListView):
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template_name = "library/item_list.html"
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model = models.ProjectItem
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def post(self, request, **kwargs):
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project = self.get_project()
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project_works = project.works.all()
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instruments = request.POST.getlist('instruments')
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works = request.POST.getlist('works')
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self.request.session['part'] = request.POST.get('part', '')
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self.request.session['instrument'] = request.POST.get('instrument')
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valid_pks = [ x.pk for x in project_works ]
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sections = []
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for i, pk in enumerate(works):
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if int(pk) not in valid_pks:
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raise Exception(f"Not a valid work pk: {pk}")
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tag = instruments[i]
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if tag == '-':
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continue
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part = Section.objects.filter(tag=tag, doc__work=pk).select_related('doc').get()
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sections.append((part.doc.upload.path, part.doc.work.name, part.start, part.end, 1))
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result = extract_and_concat(sections)
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download_name = f'{project.name}.pdf'
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response = FileResponse(result, content_type="application/pdf")
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response['Content-Disposition'] = f'inline; filename="{download_name}"'
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return response
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def get_queryset(self):
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return super(ProjectItemListView, self).get_queryset().select_related('project', 'work')
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def get_context_data(self, **kwargs):
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data = super(ProjectItemListView, self).get_context_data(**kwargs)
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data['instruments'] = INSTRUMENTS
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data['instrument'] = self.request.session.get('instrument', 'Score')
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data['part'] = self.request.session.get('part', '0')
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data['running_time'] = self.get_queryset().aggregate(Sum('work__running_time'))['work__running_time__sum']
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#if running_time:
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# data['running_time'] = "{0:d}:{1:02d}".format(int(running_time / 60), running_time % 60)
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#else:
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# data['running_time'] = "-:--"
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return data
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class ProjectItemManageView(ProjectMixin, ListView):
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template_name = "library/item_list_manage.html"
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model = models.ProjectItem
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def post(self, request, **kwargs):
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self.request = request
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self.kwargs = kwargs
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data = json.loads(request.body)
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q = self.get_queryset()
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for pk, order in data.items():
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order = int(order)
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if order == -1:
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q.filter(pk=pk).delete()
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else:
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i = q.filter(pk=pk).update(order=order)
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return HttpResponse(status=204)
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def get_queryset(self):
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return super(ProjectItemManageView, self).get_queryset().select_related('project', 'work')
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class ProjectItemAddView(ProjectMixin, UpdateView):
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form_class = forms.PlaylistAddForm
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template_name = "interface/default_form.html"
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def get_success_url(self):
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return resolve_url('item_list_manage', project=self.kwargs['project'])
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def get_object(self):
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return self.get_project()
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""" COLLECTION VIEWS """
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class CollectionMixin(AuthorizedResourceMixin):
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def is_authorized(self):
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collection_id = self.kwargs['collection']
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self.collection = get_object_or_404(models.Collection, pk=collection_id)
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if super().is_authorized():
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return True
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if self.collection.has_admininistrator(self.request.user):
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self.request.is_admin = True
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return True
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return False
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def get_context_data(self, **kwargs):
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data = super().get_context_data(**kwargs)
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if self.collection:
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data['collection'] = self.collection
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return data
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def get_queryset(self):
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return super().get_queryset().filter(collection=self.collection)
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class CollectionListView(ListView):
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paginate_by = 20
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def get_queryset(self):
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collections = models.Collection.objects.all()
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if self.request.user.is_anonymous:
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return models.Collection.objects.none()
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if self.request.user.is_staff:
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return collections
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return collections.filter(Q(administrators=self.request.user) | Q(allowed_ensembles__ensemble__admins=self.request.user))
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class WorkListView(CollectionMixin, ListView):
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paginate_by = 20
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def get_works(self):
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collections = CollectionMixin.get_queryset(self)
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return Work.objects.filter(collection__in=collections).order_by('name').distinct().select_related('collection')
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def get_context_data(self, *args, **kwargs):
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data = super(WorkListView, self).get_context_data(*args, **kwargs)
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#data['title'] = f'Music available to {self.ensemble.name}'
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data['title'] = "My Library"
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return data
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def get_queryset(self):
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works = self.get_works()
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q = self.request.GET.get('filter')
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if q:
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if ":" in q:
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name, _, value = q.partition(":")
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works = works.filter(meta_info__name=name, meta_info__value__contains=value)
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else:
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works = works.filter(Q(name__contains=q) | Q(composer__contains=q) | Q(meta_info__value__contains=q))
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return works.order_by('name', 'pk')
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class CollectionWorkListView(WorkListView):
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def get_works(self):
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works = Work.objects.filter(collection=self.kwargs['collection']).distinct()
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loan_count = Count('project_items', Q(project_items__checkout__lte=now(), project_items__returned=None))
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works = works.annotate(loan_count=loan_count)
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return works
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def get_context_data(self, *args, **kwargs):
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data = super(CollectionWorkListView, self).get_context_data(*args, **kwargs)
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data['title'] = self.collection.name
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return data
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class WorkAddView(CollectionMixin, FormView):
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template_name = "interface/default_form.html"
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form_class = forms.WorkCreateForm
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title = "Add a new work"
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def form_valid(self, form):
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work = form.save(commit=False)
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work.ensemble_id = self.request.ensemble_id
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work.collection_id = self.kwargs['pk']
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work.save()
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# handle the files
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uploads = self.request.FILES.getlist('uploads')
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docs = []
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for f in uploads:
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docs.append(work.docs.create(upload=f).pk)
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if len(docs) == 1:
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return redirect('document_annotate', docs[0])
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else:
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return redirect('work_detail', pk=work.pk)
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class WorkMixin(object):
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def get_queryset(self):
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if self.request.is_admin:
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return Work.objects.all()
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return Work.objects.filter(collection__allowed_ensembles__ensemble=self.request.ensemble_id)
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class WorkDetailView(CollectionMixin, WorkMixin, DetailView):
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pass
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class WorkUpdateView(CollectionMixin, WorkMixin, UpdateView):
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fields = ['name', 'composer', 'edition', 'code', 'licence', 'max_projects', 'running_time', 'notes']
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template_name = 'interface/default_form.html'
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def get_success_url(self):
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return resolve_url('work_detail', self.kwargs['pk'])
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class WorkAddToProject(ProjectMixin, FormView):
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admin_required = True
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form_class = forms.ProjectSelectForm
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template_name = "interface/default_form.html"
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title = "Select project to add work to"
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def get_object(self):
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return Work.objects.get(pk=self.kwargs['pk'])
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def get_form(self):
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f = super(WorkAddToProject, self).get_form()
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qs = f.fields['project'].queryset
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work = self.get_object()
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qs = qs.filter(ensemble_id=self.request.ensemble_id).exclude(pk__in=work.projects.all())
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f.fields['project'].queryset = qs
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return f
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def form_valid(self, form):
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work = self.get_object()
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project = form.cleaned_data['project']
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work.project_items.create(project=project, approved_by=self.request.user, checkout=now())
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return redirect('item_list', project=project.pk)
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class WorkPartSetView(EnsembleMixin, DetailView):
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template_name = "library/work_partset.html"
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def post(self, request, *args, **kwargs):
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work = self.get_object()
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parts = request.POST.getlist('parts')
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copies = request.POST.getlist('copies')
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sections = []
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for i, tag in enumerate(parts):
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part = work.digital_parts.select_related('doc').get(tag=tag)
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sections.append((part.doc.upload.path, part.instrument, part.start, part.end, int(copies[i])))
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result = extract_and_concat(sections)
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download_name = f'{work.name}.pdf'
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response = FileResponse(result, content_type="application/pdf")
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response['Content-Disposition'] = f'inline; filename="{download_name}"'
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return response
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def get_queryset(self):
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works = Work.objects.all()
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if not self.request.is_admin:
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works = works.filter(collection__allowed_ensembles__ensemble=self.request.ensemble_id)
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return works
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class WorkAddDocumentView(CollectionMixin, CreateView):
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template_name = "interface/default_form.html"
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model = Document
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fields = ['upload']
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def title(self):
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work = Work.objects.get(pk=self.kwargs['pk'])
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return f"Add a document to {work.name}"
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def form_invalid(self, form):
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if self.request.headers['Accept'] == 'application/json':
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return HttpResponse(status=400)
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return super().form_invalid(form)
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def form_valid(self, form):
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doc = form.save(commit=False)
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doc.work_id = self.kwargs['pk']
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doc.save()
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# auto tag the document
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name, _ = os.path.splitext(os.path.basename(doc.upload.name))
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parts = re.split(r'[^A-Za-z]+', name)
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parts.reverse()
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for word in parts:
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try:
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tag = INSTRUMENT_TAGS[word.lower()]
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doc.sections.create(tag=tag)
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break
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except KeyError:
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pass
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if self.request.headers['Accept'] == 'application/json':
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filename = os.path.basename(doc.upload.name)
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return JsonResponse({
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"message": "created",
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"id": doc.pk,
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"entry": render_to_string('library/document_entry.html',
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{'collection': self.collection, 'doc': doc, 'request': self.request}
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)
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}, status=201)
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return redirect('document_annotate', self.collection.pk, doc.pk)
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class DocumentMixin(CollectionMixin):
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model = models.Document
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def get_queryset(self):
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return models.Document.objects.filter(work__collection=self.collection)
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# def get_queryset(self):
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# if self.request.is_admin:
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# return Document.objects.select_related('work')
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# return Document.objects.filter(work__ensemble=self.request.ensemble_id).select_related('work')
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class DocumentDetailView(DocumentMixin, DetailView):
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pass
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class DocumentDownloadView(DocumentMixin, SingleObjectMixin, View):
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def get(self, request, **args):
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self.request = request
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self.args = args
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self.object = self.get_object()
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#response = FileResponse(self.object.upload, content_type="application/pdf")
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#return response
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return redirect(self.object.upload.url)
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class DocumentAnnotateView(DocumentMixin, DetailView):
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template_name = 'library/document_annotate.html'
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def post(self, request, **args):
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self.request = request
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self.args = args
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self.object = self.get_object()
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data = json.loads(request.body)
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with transaction.atomic():
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self.object.sections.all().delete()
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for tag, start, end in data:
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#pages.sort()
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#end = pages[-1] if len(pages) > 1 else None
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o = self.object.sections.create(tag=tag, type=models.Section.TYPE_INSTRUMENT, start=start, end=end)
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return HttpResponse(status=204)
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def get_context_data(self, **kwargs):
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data = super(DocumentAnnotateView, self).get_context_data(**kwargs)
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pages = []
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for part in data['document'].sections.all():
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pages.append((part.tag, part.start, part.end))
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data['json_data'] = {'pageTags': pages, 'instruments': dict(INSTRUMENTS)}
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return data
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class DocumentDeleteView(DocumentMixin, DeleteView):
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#def get_template_names(self):
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# return ["interface/default_form.html"]
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def get_success_url(self):
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return resolve_url('work_detail', self.collection.pk, self.object.work_id)
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class PartDownloadView(CollectionMixin, SingleObjectMixin, View):
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pk_url_kwarg = 'section'
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def get(self, request, **args):
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self.request = request
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self.args = args
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self.object = self.get_object()
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result = extract_pages(self.object.doc.upload.path, self.object.doc.work.name, self.object.start, self.object.end)
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#download_name = f'{self.object.doc.work.name}_{self.object.instrument}.pdf'
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response = FileResponse(result, content_type="application/pdf")
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response['Content-Disposition'] = f'inline; filename="{self.args["filename"]}"'
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return response
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def get_queryset(self):
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if self.request.is_admin:
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parts = Section.objects.all()
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else:
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parts = Section.objects.filter(doc__work__collection__allowed_ensembles__ensemble=self.request.ensemble_id)
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return parts.select_related('doc', 'doc__work') |