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1f33924ceb
This means we can include the anonymous ID for the file in the log we have about Type3 fonts [1]. Currently, we have no way of tracing manually uploaded files with this potential defect. [1]: https://github.com/alphagov/notifications-template-preview/pull/557
107 lines
3.7 KiB
Python
107 lines
3.7 KiB
Python
import base64
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from io import BytesIO
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import requests
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from flask import current_app, json
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from notifications_utils.pdf import extract_page_from_pdf
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from app import current_service
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class TemplatePreview:
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@classmethod
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def from_database_object(cls, template, filetype, values=None, page=None):
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data = {
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'letter_contact_block': template.get('reply_to_text', ''),
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'template': template,
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'values': values,
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'filename': current_service.letter_branding and current_service.letter_branding['filename']
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}
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resp = requests.post(
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'{}/preview.{}{}'.format(
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current_app.config['TEMPLATE_PREVIEW_API_HOST'],
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filetype,
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'?page={}'.format(page) if page else '',
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),
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json=data,
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headers={'Authorization': 'Token {}'.format(current_app.config['TEMPLATE_PREVIEW_API_KEY'])}
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)
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return (resp.content, resp.status_code, resp.headers.items())
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@classmethod
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def from_valid_pdf_file(cls, pdf_file, page):
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pdf_page = extract_page_from_pdf(BytesIO(pdf_file), int(page) - 1)
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response = requests.post(
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'{}/precompiled-preview.png{}'.format(
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current_app.config['TEMPLATE_PREVIEW_API_HOST'],
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'?hide_notify=true' if page == '1' else ''
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),
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data=base64.b64encode(pdf_page).decode('utf-8'),
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headers={'Authorization': 'Token {}'.format(current_app.config['TEMPLATE_PREVIEW_API_KEY'])}
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)
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return (response.content, response.status_code, response.headers.items())
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@classmethod
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def from_invalid_pdf_file(cls, pdf_file, page):
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pdf_page = extract_page_from_pdf(BytesIO(pdf_file), int(page) - 1)
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response = requests.post(
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'{}/precompiled/overlay.png{}'.format(
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current_app.config['TEMPLATE_PREVIEW_API_HOST'],
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'?page_number={}'.format(page)
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),
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data=pdf_page,
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headers={'Authorization': 'Token {}'.format(current_app.config['TEMPLATE_PREVIEW_API_KEY'])}
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)
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return (response.content, response.status_code, response.headers.items())
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@classmethod
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def from_example_template(cls, template, filename):
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data = {
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'letter_contact_block': template.get('reply_to_text'),
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'template': template,
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'values': None,
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'filename': filename
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}
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resp = requests.post(
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'{}/preview.png'.format(current_app.config['TEMPLATE_PREVIEW_API_HOST']),
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json=data,
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headers={'Authorization': 'Token {}'.format(current_app.config['TEMPLATE_PREVIEW_API_KEY'])}
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)
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return (resp.content, resp.status_code, resp.headers.items())
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@classmethod
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def from_utils_template(cls, template, filetype, page=None):
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return cls.from_database_object(
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template._template,
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filetype,
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template.values,
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page=page,
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)
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def get_page_count_for_letter(template, values=None):
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if template['template_type'] != 'letter':
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return None
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page_count, _, _ = TemplatePreview.from_database_object(template, 'json', values)
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page_count = json.loads(page_count.decode('utf-8'))['count']
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return page_count
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def sanitise_letter(pdf_file, *, upload_id, allow_international_letters):
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return requests.post(
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'{}/precompiled/sanitise?allow_international_letters={}&upload_id={}'.format(
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current_app.config['TEMPLATE_PREVIEW_API_HOST'],
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'true' if allow_international_letters else 'false',
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upload_id,
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),
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data=pdf_file,
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headers={'Authorization': 'Token {}'.format(current_app.config['TEMPLATE_PREVIEW_API_KEY'])}
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)
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