Add import functionality from .qsp, Quelea archive

backend/forms.py

@@ -1,5 +1,5 @@
 """Forms for backend app"""
-from django.forms import ModelForm, ModelMultipleChoiceField, CheckboxSelectMultiple
+from django.forms import ModelForm, ModelMultipleChoiceField, CheckboxSelectMultiple, Form, FileField
 
 from backend.models import Song
 from category.models import Category
@@ -13,3 +13,7 @@ class Meta:
         model = Song
         # pylint: disable=modelform-uses-exclude
         exclude = ["prerendered_web", "prerendered_pdf"]
+
+class UploadFileForm(Form):
+    categories = ModelMultipleChoiceField(widget=CheckboxSelectMultiple, queryset=Category.objects.all())
+    file = FileField(required=True, allow_empty_file=False)

backend/menus.py

@@ -9,6 +9,8 @@
              reverse("category:list")),
     MenuItem(_("Add a song"),
              reverse("backend:add")),
+    MenuItem(_("Import Quelue archive"),
+             reverse("backend:import")),
     MenuItem(_("Add Songbook"),
              reverse("category:add")),
     MenuItem(_("Analytics"),

backend/templates/songs/import.html

@@ -0,0 +1,5 @@
+{% extends "base/form.html" %}
+{% load i18n %}
+
+{% block title %} {% trans "Song Editor" %} {% endblock %}
+{% block header %} {% trans "Song Editor" %} {% endblock %}

backend/urls.py

@@ -2,12 +2,13 @@
 from django.urls import path
 
 from backend.views import SongCreateView, SongUpdateView, SongDeleteView, SongsDatatableView, \
-    IndexSongListView
+    IndexSongListView, UploadView
 
 urlpatterns = [
     path('', IndexSongListView.as_view(), name="index"),
     path('add', SongCreateView.as_view(), name="add"),
     path('edit/<int:pk>', SongUpdateView.as_view(), name="edit"),
     path('delete/<int:pk>', SongDeleteView.as_view(), name="delete"),
     path('api/songs', SongsDatatableView.as_view(), name="songs"),
+    path('import', UploadView.as_view(), name="import"),
 ]

backend/views.py

@@ -1,6 +1,8 @@
 """Views for backend app"""
 import json
 from typing import Dict
+import zipfile
+import xml.etree.ElementTree as ET
 
 from django.conf import settings
 from django.contrib import messages
@@ -11,11 +13,12 @@
 from django.urls import reverse_lazy, reverse
 from django.utils.decorators import method_decorator
 from django.utils.translation import gettext_lazy as _, gettext_noop
-from django.views.generic import ListView, CreateView, UpdateView, DeleteView
+from django.views.generic import ListView, CreateView, UpdateView, DeleteView, FormView
 from django_datatables_view.base_datatable_view import BaseDatatableView
+from django.http import HttpResponseRedirect
 
 from analytics.views import AnalyticsMixin
-from backend.forms import SongForm
+from backend.forms import SongForm, UploadFileForm
 from backend.models import Song
 from backend.utils import regenerate_pdf, regenerate_prerender
 from category.models import Category
@@ -120,3 +123,64 @@ class SongsDatatableView(BaseDatatableView):
     model = Song
     max_display_length = 500
     columns = ["name", "author", "capo"]
+
+def SongsQueleaImport(uploaded_file, cleaned_data):
+
+    def read_quelea_file(filename):
+        with zipfile.ZipFile(filename) as f:
+            return {name: f.read(name) for name in f.namelist()}
+
+
+    def get_lyrics(mapp):
+        ret = []
+        for name in mapp.keys():
+            song = ET.fromstring(mapp[name])
+            lyrics_lines = []
+            for child in song.findall('.//lyrics'):
+                if child.text is not None:
+                    lyrics_lines.append(child.text)
+
+            ret.append((name, '\n\n'.join(lyrics_lines)))
+        return ret
+
+
+    songs = read_quelea_file(cleaned_data['file'])
+    lyric = get_lyrics(songs)
+
+    songs = 0
+    for (name, l) in lyric:
+        clean_name = name.rstrip('.xml')
+
+        song_obj = Song(name=clean_name, text=l)
+        song_obj.save()
+
+        list_ids = [f.pk for f in cleaned_data['categories']]
+
+        song_obj.categories.set(list_ids)
+        songs += 1
+
+    return songs
+
+
+@method_decorator(login_required, name='dispatch')
+class UploadView(FormView):
+    form_class = UploadFileForm
+    template_name = 'songs/import.html'
+
+    success_url = reverse_lazy('backend:index')
+
+    def get_success_url(self):
+        #regenerate_pdf(self.object)
+        #regenerate_prerender(self.object)
+        return super().get_success_url()
+
+    def post(self, request, *args, **kwargs):
+        """A POST request. Validate the form and then handle the upload
+        based ont the POSTed data. Does not handle extra parameters yet.
+        """
+        form = UploadFileForm(request.POST, request.FILES)
+        if form.is_valid():
+            SongsQueleaImport(request.FILES['file'], form.cleaned_data)
+        else:
+            print(form.errors)
+        return HttpResponseRedirect(self.get_success_url())

chords/settings/base.py

@@ -101,7 +101,7 @@
 STATICFILES_FINDERS = [
     'django.contrib.staticfiles.finders.FileSystemFinder',
     'django.contrib.staticfiles.finders.AppDirectoriesFinder',
-    'sass_processor.finders.CssFinder'
+    'sass_processor.finders.CssFinder',
 ]
 
 COMPRESS_ENABLED = True

frontend/templates/base/form.html

@@ -3,12 +3,16 @@
 {% load bootstrap4 %}
 
 {% block framed_body %}
-  <form method="post">
+  {% if form.is_multipart %}
+    <form enctype="multipart/form-data" method="post">
+  {% else %}
+    <form method="post">
+  {% endif %}
     {% csrf_token %}
     {% bootstrap_form form %}
     {% buttons %}
         <button type="submit" class="btn btn-primary">{% trans "Submit" %}</button>
     {% endbuttons %}
   </form>
   {{ form.media }}
-{% endblock %}
+{% endblock %}