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https://github.com/GSA/notifications-admin.git
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63f704c64f
We were showing the previous page link when we meant to show the next page link because the variables were swapped round in the code.
285 lines
9.2 KiB
Python
285 lines
9.2 KiB
Python
import base64
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import json
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import urllib
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import uuid
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from io import BytesIO
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from flask import (
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abort,
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current_app,
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redirect,
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render_template,
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request,
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url_for,
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)
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from notifications_utils.pdf import pdf_page_count
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from PyPDF2.utils import PdfReadError
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from requests import RequestException
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from app import current_service, notification_api_client, service_api_client
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from app.extensions import antivirus_client
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from app.main import main
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from app.main.forms import LetterUploadPostageForm, PDFUploadForm
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from app.s3_client.s3_letter_upload_client import (
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get_letter_metadata,
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get_letter_pdf_and_metadata,
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get_transient_letter_file_location,
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upload_letter_to_s3,
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)
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from app.template_previews import TemplatePreview, sanitise_letter
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from app.utils import (
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generate_next_dict,
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generate_previous_dict,
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get_letter_validation_error,
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get_template,
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user_has_permissions,
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)
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MAX_FILE_UPLOAD_SIZE = 2 * 1024 * 1024 # 2MB
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@main.route("/services/<uuid:service_id>/uploads")
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@user_has_permissions()
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def uploads(service_id):
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# No tests have been written, this has been quickly prepared for user research.
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# It's also very like that a new view will be created to show uploads.
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uploads = current_service.get_page_of_uploads(page=request.args.get('page'))
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prev_page = None
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if uploads.prev_page:
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prev_page = generate_previous_dict('main.uploads', service_id, uploads.current_page)
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next_page = None
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if uploads.next_page:
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next_page = generate_next_dict('main.uploads', service_id, uploads.current_page)
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if uploads.current_page == 1:
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listed_uploads = current_service.scheduled_jobs + uploads
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else:
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listed_uploads = uploads
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return render_template(
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'views/jobs/jobs.html',
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jobs=listed_uploads,
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prev_page=prev_page,
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next_page=next_page,
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)
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@main.route("/services/<uuid:service_id>/upload-letter", methods=['GET', 'POST'])
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@user_has_permissions('send_messages')
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def upload_letter(service_id):
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form = PDFUploadForm()
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error = {}
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if form.validate_on_submit():
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pdf_file_bytes = form.file.data.read()
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original_filename = form.file.data.filename
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if current_app.config['ANTIVIRUS_ENABLED']:
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virus_free = antivirus_client.scan(BytesIO(pdf_file_bytes))
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if not virus_free:
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return invalid_upload_error('Your file contains a virus')
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if len(pdf_file_bytes) > MAX_FILE_UPLOAD_SIZE:
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return invalid_upload_error('Your file is too big', 'Files must be smaller than 2MB.')
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try:
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# TODO: get page count from the sanitise response once template preview handles malformed files nicely
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page_count = pdf_page_count(BytesIO(pdf_file_bytes))
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except PdfReadError:
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current_app.logger.info('Invalid PDF uploaded for service_id: {}'.format(service_id))
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return invalid_upload_error(
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"There’s a problem with your file",
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'Notify cannot read this PDF.<br>Save a new copy of your file and try again.'
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)
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upload_id = uuid.uuid4()
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file_location = get_transient_letter_file_location(service_id, upload_id)
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try:
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response = sanitise_letter(BytesIO(pdf_file_bytes))
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response.raise_for_status()
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except RequestException as ex:
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if ex.response is not None and ex.response.status_code == 400:
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validation_failed_message = response.json().get('message')
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invalid_pages = response.json().get('invalid_pages')
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status = 'invalid'
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upload_letter_to_s3(
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pdf_file_bytes,
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file_location=file_location,
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status=status,
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page_count=page_count,
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filename=original_filename,
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message=validation_failed_message,
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invalid_pages=invalid_pages)
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else:
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raise ex
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else:
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response = response.json()
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recipient = response['recipient_address']
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status = 'valid'
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file_contents = base64.b64decode(response['file'].encode())
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upload_letter_to_s3(
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file_contents,
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file_location=file_location,
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status=status,
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page_count=page_count,
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filename=original_filename,
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recipient=recipient)
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return redirect(
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url_for(
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'main.uploaded_letter_preview',
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service_id=current_service.id,
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file_id=upload_id,
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)
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)
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if form.file.errors:
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error = _get_error_from_upload_form(form.file.errors[0])
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return render_template(
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'views/uploads/choose-file.html',
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error=error,
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form=form
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)
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def invalid_upload_error(error_title, error_detail=None):
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return render_template(
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'views/uploads/choose-file.html',
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error={'title': error_title, 'detail': error_detail},
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form=PDFUploadForm()
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), 400
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def _get_error_from_upload_form(form_errors):
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error = {}
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if 'PDF' in form_errors:
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error['title'] = 'Wrong file type'
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error['detail'] = form_errors
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else: # No file was uploaded error
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error['title'] = form_errors
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return error
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def format_recipient(address):
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'''
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To format the recipient we need to:
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- decode, address is url encoded
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- remove new line characters
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- remove whitespace around the lines
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- join the address lines, separated by a comma
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'''
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if not address:
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return address
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address = urllib.parse.unquote(address)
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stripped_address_lines_no_trailing_commas = [
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line.lstrip().rstrip(' ,')
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for line in address.splitlines() if line
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]
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one_line_address = ', '.join(stripped_address_lines_no_trailing_commas)
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return one_line_address
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@main.route("/services/<uuid:service_id>/preview-letter/<uuid:file_id>")
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@user_has_permissions('send_messages')
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def uploaded_letter_preview(service_id, file_id):
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re_upload_form = PDFUploadForm()
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metadata = get_letter_metadata(service_id, file_id)
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original_filename = metadata.get('filename')
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page_count = metadata.get('page_count')
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status = metadata.get('status')
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error_shortcode = metadata.get('message')
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invalid_pages = metadata.get('invalid_pages')
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recipient = format_recipient(metadata.get('recipient', ''))
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if invalid_pages:
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invalid_pages = json.loads(invalid_pages)
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error_message = get_letter_validation_error(error_shortcode, invalid_pages, page_count)
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template_dict = service_api_client.get_precompiled_template(service_id)
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# Override pre compiled letter template postage to none as it has not yet been picked even though
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# the pre compiled letter template has its postage set as second class as the DB currently requires
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# a non null value of postage for letter templates
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template_dict['postage'] = None
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form = LetterUploadPostageForm()
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template = get_template(
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template_dict,
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service_id,
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letter_preview_url=url_for(
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'.view_letter_upload_as_preview',
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service_id=service_id,
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file_id=file_id
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),
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page_count=page_count
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)
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return render_template(
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'views/uploads/preview.html',
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original_filename=original_filename,
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template=template,
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status=status,
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file_id=file_id,
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message=error_message,
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error_code=error_shortcode,
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form=form,
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recipient=recipient,
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re_upload_form=re_upload_form
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)
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@main.route("/services/<uuid:service_id>/preview-letter-image/<uuid:file_id>")
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@user_has_permissions('send_messages')
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def view_letter_upload_as_preview(service_id, file_id):
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try:
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page = int(request.args.get('page'))
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except ValueError:
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abort(400)
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pdf_file, metadata = get_letter_pdf_and_metadata(service_id, file_id)
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invalid_pages = json.loads(metadata.get('invalid_pages', '[]'))
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if (
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metadata.get('message') == 'content-outside-printable-area' and
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page in invalid_pages
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):
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return TemplatePreview.from_invalid_pdf_file(pdf_file, page)
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else:
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return TemplatePreview.from_valid_pdf_file(pdf_file, page)
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@main.route("/services/<uuid:service_id>/upload-letter/send", methods=['POST'])
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@user_has_permissions('send_messages', restrict_admin_usage=True)
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def send_uploaded_letter(service_id):
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if not (current_service.has_permission('letter') and current_service.has_permission('upload_letters')):
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abort(403)
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form = LetterUploadPostageForm()
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file_id = form.file_id.data
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if not form.validate_on_submit():
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return uploaded_letter_preview(service_id, file_id)
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postage = form.postage.data
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metadata = get_letter_metadata(service_id, file_id)
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filename = metadata.get('filename')
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recipient_address = metadata.get('recipient')
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if metadata.get('status') != 'valid':
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abort(403)
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notification_api_client.send_precompiled_letter(service_id, filename, file_id, postage, recipient_address)
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return redirect(url_for(
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'.view_notification',
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service_id=service_id,
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notification_id=file_id,
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))
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