aggiungi il supporto ai redirect

uitwww/__init__.py

@@ -25,7 +25,7 @@ from . import db
 from . import download
 from . import navbar
 from . import pages
-from . import utils
+from . import redirects
 from . import utils
 
 
@@ -57,6 +57,7 @@ def create_app(data_path):
 
     app.download = download.Downloads(data_path)
 
+    app.register_blueprint(redirects.prepare_blueprint(app))
     app.register_blueprint(app.download.prepare_blueprint(app), url_prefix="/download")
     app.register_blueprint(actions.prepare_blueprint(app), url_prefix="/+actions")
     app.register_blueprint(auth.prepare_blueprint(app), url_prefix="/+auth")

uitwww/__main__.py

@@ -53,6 +53,8 @@ def run(data, gunicorn_config, port, public, workers, debug):
         extra_files = [
             os.path.join(src_directory, "data/navbar.yml"),
             os.path.join(src_directory, "data/permissions.yml"),
+            os.path.join(src_directory, "data/redirects.yml"),
+            os.path.join(src_directory, "data/downloads.toml"),
         ]
 
         app.run(debug=True, port=port, host=host, extra_files=extra_files)

uitwww/data/redirects.yml

+# La sezione "internal" contiene i redirect che puntano ad altre pagine sempre
+# all'interno del sito di Ubuntu-it. La chiave è l'indirizzo originale, mentre
+# il valore deve contenere l'endpoint, ed opzionalmente gli argomenti
+# dell'endpoint dentro alla chiave args. Per esempio:
+#
+# "/old-download/desktop":
+#   endpoint: download.landing
+#   args:
+#     distro: desktop
+
+internal:
+  "/download/derivate":
+    endpoint: download.index
+  "/comunita/orientamento":
+    endpoint: pages.contribuire_index
+
+
+# La sezione "external" contiene i redirect che puntano a pagine esterne al
+# sito di Ubuntu-it. La chiave è l'indirizzo interno, il valore è l'URL a cui
+# gli utenti devono essere reindirizzati
+
+external:
+  "/scopri-ubuntu/richiedi-cd": "https://wiki.ubuntu-it.org/GruppoPromozione/ProgettoCDUbuntu"

uitwww/redirects.py

+# Source code of the Ubuntu-it website
+# Copyright (C) 2018 Pietro Albini <pietroalbini@ubuntu.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; witout even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import flask
+import pkg_resources
+import yaml
+import hashlib
+
+
+def prepare_blueprint(app):
+    """Prepare a blueprint containing all the redirects"""
+    raw = pkg_resources.resource_string("uitwww", "data/redirects.yml")
+    config = yaml.load(raw.decode("utf-8"))
+
+    bp = flask.Blueprint("redirects", __name__)
+
+    for origin, dest in config["external"].items():
+        endpoint = "ext_" + hashlib.sha1(origin.encode("utf-8")).hexdigest()[:10]
+
+        @bp.route(origin, endpoint=endpoint)
+        def _(_dest=dest):
+            return flask.redirect(_dest)
+
+    for origin, dest in config["internal"].items():
+        endpoint = "int_" + hashlib.sha1(origin.encode("utf-8")).hexdigest()[:10]
+
+        @bp.route(origin, endpoint=endpoint)
+        def _(_dest=dest):
+            _dest.setdefault("args", {})
+            return flask.redirect(
+                flask.url_for(_dest["endpoint"], **_dest["args"])
+            )
+
+    return bp