From 2b2c70932bf6ffcd77fbe5f6c59a203299f755a5 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <koszko@koszko.org>
Date: Wed, 23 Nov 2022 11:02:36 +0100
Subject: add WSGI script

---
 guix-module-dir/hydrilla-website.scm | 32 ++++++++++++++++++++++++++++++++
 src/hydrilla_website/__init__.py     |  2 +-
 wsgi.py                              | 16 ++++++++++++++++
 3 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 wsgi.py

diff --git a/guix-module-dir/hydrilla-website.scm b/guix-module-dir/hydrilla-website.scm
index af593bf..ce76784 100644
--- a/guix-module-dir/hydrilla-website.scm
+++ b/guix-module-dir/hydrilla-website.scm
@@ -57,6 +57,38 @@
     ;; checkout. We instead build from source tarball generated under ./dist/.
     (local-file (string-append %source-dir "/dist/" source-tarball-name)))
    (build-system python-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'replace-wsgi.py
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             ;; In the wsgi.py file, embed the PYTHONPATH containing both the
+             ;; dependencies and the python modules of this package. This will
+             ;; make them available at runtime.
+             (let ((pythonpath
+                    (string-append (getenv "GUIX_PYTHONPATH")
+                                   ":"
+                                   (site-packages inputs outputs))))
+               (substitute* "wsgi.py"
+                 (("^from .* import .*" import-line)
+                  (string-append
+                   "# Make Guix-installed dependencies visible to Python.\n"
+                   "import sys\n"
+                   "sys.path.extend('" pythonpath "'.split(':'))\n"
+                   "\n"
+                   import-line))
+                 (("^set_secret.*")
+                  (string-append
+                   "from pathlib import Path\n"
+                   "path_to_secret = Path('/etc/hydrilla-website/secret.txt')\n"
+                   "if path_to_secret.exists():\n"
+                   "    set_secret(path_to_secret.read_text().strip())"))))))
+         (add-after 'install 'install-wsgi-script
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (share-dir (string-append out "/share/hydrilla-website")))
+               (mkdir-p share-dir)
+               (copy-file "wsgi.py" (string-append share-dir "/wsgi.py"))))))))
    (propagated-inputs
     (list python-flask))
    (native-inputs
diff --git a/src/hydrilla_website/__init__.py b/src/hydrilla_website/__init__.py
index 3ac4327..f3bd4e7 100644
--- a/src/hydrilla_website/__init__.py
+++ b/src/hydrilla_website/__init__.py
@@ -4,4 +4,4 @@
 #
 # Available under the terms of Creative Commons Zero v1.0 Universal.
 
-from .app import website_app
+from .app import website_app, set_secret
diff --git a/wsgi.py b/wsgi.py
new file mode 100644
index 0000000..d43f8e3
--- /dev/null
+++ b/wsgi.py
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: CC0-1.0
+
+# WSGI script for Hydrilla&Haketilo website.
+#
+# Copyright (C) 2022 Wojtek Kosior
+
+# Uncomment the lines below if you want to use a virtualenv installation of
+# the website package.
+
+#from pathlib import Path
+#path = Path('/path/to/virtualenv/bin/activate_this.py')
+#exec(path.read_text(), {'__file__': str(path)})
+
+from hydrilla_website import website_app as application, set_secret
+
+set_secret('please replace this with something appropriate')
-- 
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