basic task order pdf downloads

atst/routes/requests/approval.py

@@ -1,7 +1,9 @@
-from flask import render_template, g
+from flask import render_template, g, Response
+from flask import current_app as app
 
 from . import requests_bp
 from atst.domain.requests import Requests
+from atst.domain.exceptions import NotFoundError
 
 
 def task_order_dictionary(task_order):
@@ -19,4 +21,15 @@ def approval(request_id):
     if request.task_order:
         data["task_order"] = task_order_dictionary(request.task_order)
 
-    return render_template("requests/approval.html", data=data, financial_review=True)
+    return render_template("requests/approval.html", data=data, request_id=request.id, financial_review=True)
+
+
+@requests_bp.route("/requests/task_order_download/<string:request_id>", methods=["GET"])
+def task_order_pdf_download(request_id):
+    request = Requests.get(g.current_user, request_id)
+    if request.task_order and request.task_order.pdf:
+        object_name = request.task_order.pdf.object_name
+        generator = app.uploader.download_stream(object_name)
+        return Response(generator, mimetype="application/pdf")
+    else:
+        raise NotFoundError("task_order pdf")

atst/uploader.py

@@ -37,8 +37,9 @@ class Uploader:
             )
         return (fyle.filename, object_name)
 
-    def download(self, path):
-        pass
+    def download_stream(self, object_name):
+        obj = self.container.get_object(object_name=object_name)
+        return obj.as_stream()
 
     def _get_container(self, provider, container, key, secret):
         if provider == "LOCAL":

templates/requests/_review.html

@@ -153,6 +153,14 @@
     {{ DefinitionReviewField("<dl><dt>CLIN 2003</dt> - <dd>Unclassified Cloud Support Package <br> OPTION PERIOD 2</dd></dl>", "task_order", "clin_2003", filter="dollars") }}
 
     <!-- {{ DefinitionReviewField("Task Order PDF", "task_order", "attachment") }} -->
+    <div>
+      <dt>Task Order PDF</dt>
+      <dd>
+        <a href="{{ url_for("requests.task_order_pdf_download", request_id=request_id)}}" download>
+          Download the Task Order PDF
+        </a>
+      </dd>
+    </div>
 
     {{ DefinitionReviewField("Unique Item Identifier (UII)s related to your application(s) if you already have them", "financial_verification", "uii_ids", filter="renderList") }}
 

templates/requests/approval.html

@@ -18,7 +18,7 @@
 
         <p>Ongoing maintainence for Death Star (a moon-sized Imperial military battlestation armed with a planet-destroying superlaser). Its definitely hasn't been sabotaged from the start.</p>
 
-        {% with data=data, service_branches=service_branches %}
+        {% with data=data, request_id=request_id %}
           {% include "requests/_review.html" %}
         {% endwith %}
 

tests/routes/test_request_approval.py

@@ -0,0 +1,38 @@
+import os
+from flask import url_for
+
+from atst.models.attachment import Attachment
+from tests.factories import RequestFactory, TaskOrderFactory, UserFactory
+
+
+def test_approval():
+    pass
+
+
+def test_task_order_download(app, client, user_session, pdf_upload):
+    user = UserFactory.create()
+    user_session(user)
+
+    attachment = Attachment.attach(pdf_upload)
+    task_order = TaskOrderFactory.create(number="abc123", pdf=attachment)
+    request = RequestFactory.create(task_order=task_order, creator=user)
+
+    # ensure that real data for pdf upload has been flushed to disk
+    pdf_upload.seek(0)
+    pdf_content = pdf_upload.read()
+    pdf_upload.close()
+    full_path = os.path.join(app.config.get("STORAGE_CONTAINER"), attachment.object_name)
+    with open(full_path, "wb") as output_file:
+        output_file.write(pdf_content)
+        output_file.flush()
+
+    response = client.get(url_for("requests.task_order_pdf_download", request_id=request.id))
+    assert response.data == pdf_content
+
+
+def test_task_order_download_does_not_exist(client, user_session):
+    user = UserFactory.create()
+    user_session(user)
+    request = RequestFactory.create(creator=user)
+    response = client.get(url_for("requests.task_order_pdf_download", request_id=request.id))
+    assert response.status_code == 404

tests/test_uploader.py

@@ -31,3 +31,19 @@ def test_upload_fails_for_non_pdfs(uploader):
         fs = FileStorage(fp, content_type="text/plain")
         with pytest.raises(UploadError):
             uploader.upload(fs)
+
+
+def test_download_stream(upload_dir, uploader, pdf_upload):
+    # write pdf content to upload file storage and make sure it is flushed to
+    # disk
+    pdf_upload.seek(0)
+    pdf_content = pdf_upload.read()
+    pdf_upload.close()
+    full_path = os.path.join(upload_dir, "abc")
+    with open(full_path, "wb") as output_file:
+        output_file.write(pdf_content)
+        output_file.flush()
+
+    stream = uploader.download_stream("abc")
+    stream_content = b"".join([b for b in stream])
+    assert pdf_content == stream_content