add install script and unit file

reformat sources

4 files changed, 58 insertions, 2 deletions

diff --git a/.gitignore b/.gitignore
index 33161e4..fca7333 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ user_sessions
 *.mo
 src/jwebmail/static/css/
 dist/
+jwebmail.prod.toml
diff --git a/script/install.py b/script/install.py
new file mode 100644
index 0000000..e08f8c5
--- /dev/null
+++ b/script/install.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+
+import re
+import sys
+from pathlib import Path
+
+
+def install_service_unit(prefix):
+    project_path = Path(__file__).parents[1]
+
+    if prefix == "usr":
+        install_path = Path("/etc/systemd/system")
+    elif prefix == "usr/local":
+        install_path = Path("/usr/local/lib/systemd/system")
+    else:
+        raise Exception("first arg <prefix> must be one of `usr` or `usr/local`")
+
+    def substitute(match):
+        if match[1] == "PROJECT_PATH":
+            return str(project_path)
+        else:
+            raise KeyError(match[1])
+
+    service_text_in = open(
+        project_path / "script" / "jwebmail.service.in", mode="r"
+    ).read()
+    service_text = re.sub("@(\w+)@", substitute, service_text_in, flags=re.ASCII)
+
+    install_path.mkdir(0o755, True, True)
+
+    open(install_path / "jwebmail.service", mode="w").write(service_text)
+
+
+if __name__ == "__main__":
+    install_service_unit(sys.argv[1] if len(sys.argv) == 2 else '')
diff --git a/script/jwebmail.service.in b/script/jwebmail.service.in
new file mode 100644
index 0000000..2be6e5d
--- /dev/null
+++ b/script/jwebmail.service.in
@@ -0,0 +1,16 @@
+[Unit]
+Description=JWebmail managed by gunicorn
+After=network.target
+Requires=redis.service
+
+[Service]
+Type=exec
+User=jmhoffmann
+Environment=JWEBMAIL_CONFIG="/@PREFIX@/jwebmail.toml"
+ExecStart=@PROJECT_PATH@/.venv/bin/gunicorn -b :5000 -w 4 --pythonpath "@PROJECT_PATH@/src/" -n jwebmail 'jwebmail:create_app()'
+ExecReload=/bin/kill -s HUP $MAINPID
+KillMode=mixed
+TimeoutStopSec=5
+
+[Install]
+WantedBy=multi-user.target
diff --git a/src/jwebmail/__init__.py b/src/jwebmail/__init__.py
index 26d6ffc..e1afe82 100644
--- a/src/jwebmail/__init__.py
+++ b/src/jwebmail/__init__.py
@@ -3,11 +3,11 @@ import pwd
 import sys
 from os import environ
 
-from werkzeug.middleware.proxy_fix import ProxyFix
 from flask import Flask, g
 from flask_babel import Babel, get_locale
 from flask_login import LoginManager, login_required
 from jinja2 import ChainableUndefined
+from werkzeug.middleware.proxy_fix import ProxyFix
 
 from .css import compile_css_command
 from .read_mails import load_user
@@ -82,7 +82,11 @@ def create_app():
 
     @app.context_processor
     def inject_version():
-        return {"version": __version__, "get_locale": get_locale, "format_mail": format_mail}
+        return {
+            "version": __version__,
+            "get_locale": get_locale,
+            "format_mail": format_mail,
+        }
 
     @app.url_defaults
     def add_language_code(endpoint, values):