adds docx pdf conversion

indigo_api/serializers.py

@@ -123,12 +123,13 @@ class AttachmentSerializer(serializers.ModelSerializer):
     url = serializers.SerializerMethodField()
     download_url = serializers.SerializerMethodField()
     view_url = serializers.SerializerMethodField()
+    pdf_url = serializers.SerializerMethodField()
 
     class Meta:
         model = Attachment
         fields = (
             'id',
-            'url', 'download_url', 'view_url',
+            'url', 'download_url', 'view_url', 'pdf_url',
             'file',
             'filename',
             'mime_type',
@@ -162,6 +163,14 @@ def get_view_url(self, instance):
             'pk': instance.pk,
         })
 
+    def get_pdf_url(self, instance):
+        if not instance.pk:
+            return None
+        return reverse('document-attachments-as-pdf', request=self.context['request'], kwargs={
+            'document_id': instance.document_id,
+            'pk': instance.pk,
+        })
+
     def create(self, validated_data):
         file = validated_data.get('file', None)
         if not file:

indigo_api/views/attachments.py

@@ -1,4 +1,4 @@
-from django.http import HttpResponse
+from django.http import HttpResponse, Http404
 from django.shortcuts import get_list_or_404
 
 from rest_framework import viewsets
@@ -11,6 +11,13 @@
 from ..authz import ModelPermissions, RelatedDocumentPermissions
 from .documents import DocumentResourceView
 from .misc import DEFAULT_PERMS
+from docpipe.soffice import soffice_convert
+import os
+
+DOCX_MIME_TYPES = [
+    'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+    'application/msword',
+]
 
 
 def view_attachment(attachment):
@@ -30,6 +37,16 @@ def view_attachment_by_filename(doc_id, filename):
     return view_attachment(attachment)
 
 
+def view_attachment_as_pdf(attachment):
+    suffix = os.path.splitext(attachment.filename)[1].lstrip('.')
+    pdf = soffice_convert(attachment.file, suffix, 'pdf')[0]
+    file_bytes = pdf.read()
+    response = HttpResponse(file_bytes, content_type="application/pdf")
+    response['Content-Disposition'] = 'inline; filename=%s' % attachment.filename
+    response['Content-Length'] = str(len(file_bytes))
+    return response
+
+
 def download_attachment(attachment):
     response = view_attachment(attachment)
     response['Content-Disposition'] = 'attachment; filename=%s' % attachment.filename
@@ -51,6 +68,13 @@ def view(self, request, *args, **kwargs):
         attachment = self.get_object()
         return view_attachment(attachment)
 
+    @action(detail=True, methods=['GET'])
+    def as_pdf(self, request, *args, **kwargs):
+        attachment = self.get_object()
+        if attachment.mime_type in DOCX_MIME_TYPES:
+            return view_attachment_as_pdf(attachment)
+        raise Http404()
+
     def filter_queryset(self, queryset):
         return queryset.filter(document=self.document).all()
 

indigo_app/static/javascript/indigo/views/document_source_att.js

@@ -23,7 +23,16 @@
         this.$dropdown = this.$('.source-attachment-list');
         this.$toggle = this.$('.source-attachment-toggle');
         this.iframe = document.getElementById('source-attachment-iframe');
-        this.mime_types = {'application/pdf': true, 'text/html': true};
+        this.docx_mimetypes = {
+          'application/vnd.openxmlformats-officedocument.wordprocessingml.document': true,
+          'application/msword': true,
+        }
+        this.pdf_mimetypes = {
+          'application/pdf': true,
+          'text/html': true,
+        };
+        // combine docx and pdf mimetypes
+        this.mime_types = {...this.pdf_mimetypes, ...this.docx_mimetypes};
         this.chosen = null;
 
         // work publication document
@@ -61,11 +70,18 @@
         choices = this.attachments.filter(function(att) {
           return self.mime_types[att.get('mime_type')];
         }).map(function(att) {
+          let url = att.get('view_url');
+          let default_choice;
+           if (Object.keys(self.docx_mimetypes).includes(att.get('mime_type'))) {
+            url = att.get('pdf_url');
+            default_choice = true;
+          }
           return {
             'title': att.get('filename'),
-            'url': att.get('view_url'),
             'id': att.get('id'),
             'group': 'Attachments',
+            url,
+            default_choice,
           };
         });
         if (this.pubdoc) choices.unshift(this.pubdoc);
@@ -108,7 +124,8 @@
         var show = !$(e.target).hasClass('active');
 
         if (show) {
-          this.choose(this.chosen || this.choices[0]);
+          const default_choice = this.choices.find(choice => choice.default_choice) || this.choices[0];
+          this.choose(this.chosen || default_choice);
         } else {
           this.$view.addClass('d-none');
           this.$('.source-attachment-toggle').removeClass('active');