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This adds a preview pane which is visible when updating a letter brand. If JavaScript is enabled, the preview pane shows on the set-letter-branding page, and submitting the form saves updates the letter brand for a service immediately. If Javascript is not enabled, there is a separate 'Preview email branding' page which shows a preview of the brand and has a 'Save' button on it.
69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
import requests
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from flask import current_app, json
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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_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 validate_letter(pdf_file):
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return requests.post(
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'{}/precompiled/validate?include_preview=true'.format(current_app.config['TEMPLATE_PREVIEW_API_HOST']),
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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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