add hoster basics

src/c3nav/editor/__init__.py

@@ -0,0 +1 @@
+default_app_config = 'c3nav.editor.apps.EditorConfig'

src/c3nav/editor/apps.py

@@ -0,0 +1,9 @@
+from django.apps import AppConfig
+
+
+class EditorConfig(AppConfig):
+    name = 'c3nav.editor'
+
+    def ready(self):
+        from .hosters import init_hosters
+        init_hosters()

src/c3nav/editor/hosters/__init__.py

@@ -0,0 +1,29 @@
+from django.conf import settings
+from .github import GithubHoster  # noqa
+from .gitlab import GitlabHoster  # noqa
+
+from collections import OrderedDict
+
+
+hosters = {}
+
+
+def init_hosters():
+    global hosters
+    hosters = OrderedDict((name, create_hoster(name=name, **data)) for name, data in settings.EDITOR_HOSTERS.items())
+
+
+def create_hoster(api, **kwargs):
+    if api == 'github':
+        return GithubHoster(**kwargs)
+    elif api == 'gitlab':
+        return GitlabHoster(**kwargs)
+    else:
+        raise ValueError('Unknown hoster API: %s' % api)
+
+
+def get_hoster_for_package(package):
+    for name, hoster in hosters.items():
+        if package.home_repo.startswith(hoster.base_url):
+            return hoster
+    return None

src/c3nav/editor/hosters/base.py

@@ -0,0 +1,16 @@
+from ...mapdata.models import Package
+
+
+class Hoster:
+    def __init__(self, name, base_url):
+        self.name = name
+        self.base_url = base_url
+
+    def get_packages(self):
+        return Package.objects.filter(home_repo__startswith=self.base_url)
+
+    def _get_session_data(self, request):
+        return request.session.setdefault('hosters', {}).setdefault(self.name, {})
+
+    def is_access_granted(self, request):
+        return self._get_session_data(request).get('access_granted', False)

src/c3nav/editor/hosters/github.py

@@ -0,0 +1,8 @@
+from .base import Hoster
+
+
+class GithubHoster(Hoster):
+    def __init__(self, app_id, app_secret, **kwargs):
+        super().__init__(**kwargs)
+        self._app_id = app_id
+        self._app_secret = app_secret

src/c3nav/editor/hosters/gitlab.py

@@ -0,0 +1,8 @@
+from .base import Hoster
+
+
+class GitlabHoster(Hoster):
+    def __init__(self, app_id, app_secret, **kwargs):
+        super().__init__(**kwargs)
+        self._app_id = app_id
+        self._app_secret = app_secret