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graphic_templates.py
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graphic_templates.py
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from mimetypes import guess_type
import os
import subprocess
from flask import Blueprint, abort, make_response, render_template
from jinja2 import Environment, FileSystemLoader
import app_config
import copytext
import oauth
from render_utils import load_graphic_config, make_context, render_with_context, smarty_filter
graphic_templates = Blueprint('graphic_templates', __name__)
@graphic_templates.route('/<slug>/')
@oauth.oauth_required
def _templates_detail(slug):
"""
Renders a parent.html index with child.html embedded as iframe.
"""
from flask import request
template_path = '%s/%s' % (app_config.TEMPLATES_PATH, slug)
base_template_path = '%s/%s' % (app_config.TEMPLATES_PATH, '_base')
# NOTE: Parent must load pym.js from same source as child to prevent
# version conflicts!
context = make_context(asset_depth=2, root_path=template_path)
context['slug'] = slug
context['type'] = 'templates'
try:
graphic_config = load_graphic_config(
template_path, [base_template_path])
context.update(graphic_config.__dict__)
if hasattr(graphic_config, 'COPY_GOOGLE_DOC_KEY') and graphic_config.COPY_GOOGLE_DOC_KEY:
copy_path = '%s/%s.xlsx' % (template_path, slug)
if request.args.get('refresh'):
oauth.get_document(graphic_config.COPY_GOOGLE_DOC_KEY, copy_path)
context['COPY'] = copytext.Copy(filename=copy_path)
except IOError:
pass
# Save for uploading to S3.
html = render_template('parent.html', **context)
with open('%s/index.html' % template_path, "w") as filename:
filename.write(html)
return make_response(html)
@graphic_templates.route('/<slug>/child.html')
@oauth.oauth_required
def _templates_child(slug):
"""
Renders a child.html for embedding.
"""
template_path = '%s/%s' % (app_config.TEMPLATES_PATH, slug)
base_template_path = '%s/%s' % (app_config.TEMPLATES_PATH, '_base')
# Fallback for legacy projects w/o child templates
if not os.path.exists('%s/child_template.html' % template_path):
with open('%s/child.html' % template_path) as f:
contents = f.read()
return contents
context = make_context(asset_depth=2, root_path=template_path)
context['slug'] = slug
env = Environment(loader=FileSystemLoader([
template_path,
'%s/_base' % app_config.TEMPLATES_PATH])
)
try:
graphic_config = load_graphic_config(
template_path, [base_template_path])
context.update(graphic_config.__dict__)
if hasattr(graphic_config, 'JINJA_FILTER_FUNCTIONS'):
for func in graphic_config.JINJA_FILTER_FUNCTIONS:
env.filters[func.__name__] = func
if hasattr(graphic_config, 'COPY_GOOGLE_DOC_KEY') and graphic_config.COPY_GOOGLE_DOC_KEY:
copy_path = '%s/%s.xlsx' % (template_path, slug)
context['COPY'] = copytext.Copy(filename=copy_path)
except IOError:
pass
env.globals.update(render=render_with_context)
env.filters['smarty'] = smarty_filter
template = env.get_template('child_template.html')
# Save for uploading to S3.
html = template.render(**context)
with open('%s/child.html' % template_path, "w") as filename:
html = html.replace('.less', '.css')
filename.write(html)
return make_response(template.render(**context))
# Render graphic LESS files on-demand
@graphic_templates.route('/<slug>/css/<filename>.less')
def _templates_less(slug, filename):
"""
Compiles LESS for a graphic.
"""
template_path = '%s/%s' % (app_config.TEMPLATES_PATH, slug)
less_path = '%s/css/%s.less' % (template_path, filename)
base_less_path = '%s/_base/css/base.less' % app_config.TEMPLATES_PATH
temp_base_less_path = '%s/css/base.less' % template_path
if not os.path.exists(less_path):
less_path = '%s/_base/css/%s.less' % (
app_config.TEMPLATES_PATH, filename)
if not os.path.exists(less_path):
abort(404)
if os.path.exists(temp_base_less_path):
os.remove(temp_base_less_path)
# Temp symlink base.less so it can be included by less compiler
os.symlink(base_less_path, temp_base_less_path)
r = subprocess.check_output(['node_modules/less/bin/lessc', less_path])
# Remove temporary symlink
os.remove(temp_base_less_path)
# Save .css for template
with open('%s/css/graphic.css' % template_path, "w") as filename:
filename.write(r)
return make_response(r, 200, {'Content-Type': 'text/css'})
# Serve arbitrary static files from either graphic or base graphic paths
@graphic_templates.route('/<slug>/<path:path>')
def _static(slug, path):
template_path = '%s/%s' % (app_config.TEMPLATES_PATH, slug)
real_path = '%s/%s' % (template_path, path)
if not os.path.exists(real_path):
real_path = '%s/_base/%s' % (app_config.TEMPLATES_PATH, path)
if not os.path.exists(real_path):
abort(404)
with open('%s' % real_path) as f:
return f.read(), 200, {'Content-Type': guess_type(real_path)[0]}