Make this elsable

Fixes #263

.gitignore

@@ -32,3 +32,7 @@ pip-log.txt
 /cache/
 .cache
 .pytest_cache/
+
+# Elsa
+_build/
+/talks-archive/

.travis.yml

@@ -6,15 +6,20 @@ install:
     - "pip install .[tests]"
 script:
     - "pytest"
+    - "test $TRAVIS_PULL_REQUEST == false || export DISABLE_GITHUB_ISSUES_FETCH=true"
+    - "python runserver.py freeze"
 after_success:
     - "coveralls"
 deploy:
-    provider: "script"
-    script: "deployment/deploy.sh"
+    provider: script
+    skip_cleanup: true
+    script: 'python runserver.py deploy --no-freeze --push'
     on:
-        branch: "master"
-        python: "3.4"
-        repo: "pyvec/python.cz"
+        branch: master
+        repo: pyvec/python.cz
 notifications:
     slack:
         secure: "s/PCU4+geUozmw3AJguPYpv/YFNZVYmQ30A3DZpbSOE/9HDEgqbaF/hONY1VhHriRBG1EJ2uSezbxjOveyJPV+UMGJFMPU4c4Mw4AHxyROSnJe/MpOKPd8QRgbtYWYwy5UI47bzxotGoN49Mk0EjqhaFk9DFb14et9YPwMDbrVY="
+env:
+    global:
+        secure: R1+KSJV1oOikNBvyil0m/FMace5Y4lVC8WTlIpspZZ30BDkJCQ0eTnXy7gFvuEa4wBmVSqRKnRm+LKf44wXRjyKy/KRwUIzuy9AmzzQMe/PuvWSQDz7zf1dvG7GlR0kTJlgJ7s0+Vh4uqEpjIQnvtn+xkLguYVs3QXmTUvxLMnA=

README.md

@@ -20,22 +20,17 @@ The site uses GitHub API. For certian pages to work correctly, you need to set t
 
 ```sh
 $ export GITHUB_TOKEN=...
-$ python runserver.py
+$ python runserver.py --help
 ```
 
 ### Deployment
 
-The site gets automatically deployed after any push to the `master` branch. See [documentation in the `deployment` directory](deployment/README.md).
-
--   **Hosting:** [Rosti.cz](https://rosti.cz/)<br>
-    Access: [Pyvec](http://pyvec.org/)
+The site gets automatically deployed after any push to the `master` branch.
+It is frozen by [Elsa](https://github.com/pyvec/elsa). A cron job redeploys
+it daily, so any content of dynamic nature isn't outdated.
 
 -   **Domain:** bestowed by [KRAXNET](http://www.kraxnet.cz/)<br>
     Access: e-mail request to [KRAXNET](http://www.kraxnet.cz/)
-
--   **Monitoring:** [UptimeRobot](https://uptimerobot.com/)<br>
-    Access: [@honzajavorek](http://github.com/honzajavorek)
-
 -   **Analytics:** [Google Analytics](http://www.google.com/analytics/)<br>
     Access: [@honzajavorek](http://github.com/honzajavorek), [@encukou](http://github.com/encukou), [@martinbilek](http://github.com/martinbilek), [@benabraham](http://github.com/benabraham)
 

pythoncz/__init__.py

@@ -1,6 +1,7 @@
 import os
 
 from flask import Flask
+from flask_frozen import Freezer
 
 
 ROOT_DIR = os.path.join(os.path.dirname(__file__), '..')
@@ -27,6 +28,9 @@
 
 
 app = Flask('pythoncz')
+
+freezer = Freezer(app)
+
 app.config.from_object(__name__)
 
 

pythoncz/templates/_base.html

@@ -112,7 +112,6 @@
                     href="mailto:info&#64;pyvec.org">info&#64;<!---->pyvec.org</a>, tweetujte na <a href="https://twitter.com/pyvec">@pyvec</a>.
                     <br>
                     Ilustrace kreslí <a href="http://honzajavorek.cz">Honza Javorek</a>.
-                    Stránky hostujeme zdarma u <a href="https://rosti.cz">Roští.cz</a>.
                     Doménu python.cz zapůjčil <a href="http://xnet.cz/">KRAXNET</a>.
                     Děkujeme!
                 </p>

pythoncz/templates/meta_redirect.html

@@ -0,0 +1,19 @@
+{% extends '_base.html' %}
+{% block head %}
+    <!-- Apologies for using deprecated HTML technology -->
+    <meta http-equiv="refresh" content="0; {{ url }}">
+    <link rel="canonical" href="{{ url }}">
+    <meta name="robots" content="noindex, follow">
+{% endblock %}
+
+{% block content %}
+    <h1>Přesměrování</h1>
+    <div class="row">
+        <div class="col-md-8 col-md-offset-2 thumbnail">
+            <p>
+                Obsah této stránky byl přesunut na novou adresu:
+                <a href="{{ url }}">{{ url }}</a>.
+            </p>
+        </div>
+    </div>
+{% endblock %}

pythoncz/views.py

@@ -1,9 +1,12 @@
+import os
+import subprocess
+from fnmatch import fnmatch
 from urllib.parse import quote_plus as url_quote_plus
 
 from flask import (render_template as _render_template, url_for,
-                   redirect, request, make_response)
+                   request, make_response, send_from_directory)
 
-from pythoncz import app
+from pythoncz import app, freezer
 from pythoncz.models import jobs, photos, beginners, github
 
 
@@ -65,26 +68,31 @@ def jobs_en():
 
 @app.route('/zapojse/')
 def get_involved_cs():
+    disabled = os.getenv('DISABLE_GITHUB_ISSUES_FETCH', False)
     try:
+        if disabled:
+            raise Exception('DISABLE_GITHUB_ISSUES_FETCH is set')
         issues = github.get_issues(app.config['GITHUB_ORGANIZATIONS'])
         return render_template('get_involved_cs.html', issues=issues)
     except Exception as e:
         template = render_template('get_involved_cs.html', issues=[], error=e)
-        return make_response(template, 500)
+        code = 200 if disabled else 500
+        return make_response(template, code)
 
 
-# Subdomain redirect
-
-@app.route('/', subdomain='www')
-def subdomain_redirect():
-    return redirect(url_for('index_cs'))
+# Redirects of legacy stuff
 
+def redirect(url, code=None):
+    """Return a response with a Meta redirect, code is unused"""
 
-# Redirects of legacy stuff
+    # With static pages, we can't use HTTP redirects.
+    # Return a page wit <meta refresh> instead.
+    #
+    # When Frozen-Flask gets support for redirects
+    # (https://github.com/Frozen-Flask/Frozen-Flask/issues/81),
+    # this should be revisited.
 
-@app.route('/index.html')
-def index_legacy():
-    return redirect(url_for('index_cs'), code=301)
+    return render_template('meta_redirect.html', url=url)
 
 
 @app.route('/english.html')
@@ -97,12 +105,69 @@ def pyladies(target):
     return redirect('http://pyladies.cz/v1/' + target, code=301)
 
 
+@freezer.register_generator
+def pyladies():
+    # This is hardcoded because it doesn't change & it's easier to hardcode it
+    targets = (
+        's001-install/',
+        's002-hello-world/',
+        's003-looping/',
+        's004-strings/',
+        's005-modules/',
+        's006-lists/',
+        's007-cards/',
+        's008-cards2/',
+        's009-git/',
+        's010-data/',
+        's011-dicts/',
+        's012-pyglet/',
+        's014-class/',
+        's015-asteroids/',
+        's016-micropython/',
+    )
+    yield from ({'target': t} for t in targets)
+
+
 @app.route('/pyladies/')
 def pyladies_index():
-    return redirect('http://pyladies.cz', code=301)
+    return redirect('http://pyladies.cz/', code=301)
+
+
+# Talks, this used to redirect, but that's not possible with *.pdf HTML files
+talks_dir = 'talks-archive'
+
+
+@app.before_first_request
+def clone_talks():
+    try:
+        os.chdir(talks_dir)
+    except FileNotFoundError:
+        subprocess.run(('git', 'clone',
+                         'https://github.com/pyvec/talks-archive',
+                         '--depth', '1'))
+        os.chdir(talks_dir)
+    else:
+        subprocess.run(('git', 'fetch', 'origin'), check=True)
+        subprocess.run(('git', 'reset', '--hard', 'origin/master'), check=True)
+    finally:
+        os.chdir('..')
 
 
 @app.route('/talks/<path:target>')
 def talks(target):
-    base_url = 'https://github.com/pyvec/talks-archive/raw/master/'
-    return redirect(base_url + target, code=301)
+    # sends from pythoncz directory, hence ../
+    return send_from_directory(f'../{talks_dir}', target)
+
+
+@freezer.register_generator
+def talks():
+    ignore = ['.travis.yml', '.gitignore']
+    for name, dirs, files in os.walk(talks_dir):
+        if '.git' in dirs:
+            dirs.remove('.git')
+        for file in files:
+            if file == '.git':
+                continue
+            if not any(fnmatch(file, ig) for ig in ignore):
+                path = os.path.relpath(os.path.join(name, file), talks_dir)
+                yield {'target': path}