From e641703adb337d045213b06a832fca17b8c9c2b2 Mon Sep 17 00:00:00 2001
From: EsGeh <SamuelGfroerer@googlemail.com>
Date: Fri, 29 Nov 2019 15:21:25 +0100
Subject: [PATCH] init script won' overwrite existing `.env` file

---
 README.md                 |  2 +-
 scripts/utils/settings.py | 43 ++++++++++++++++++++++-----------------
 2 files changed, 25 insertions(+), 20 deletions(-)

diff --git a/README.md b/README.md
index 5f99257..9501ebf 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ Dependencies to other git repositories are handled using [git_deps_py](https://g
 - Environment variables: see file `.env`
 
 	These variables are available inside the `docker-compose.yaml` file and are also loaded into the python scripts.
-	The file is created/overwritten with default settings by the `init.py` script.
+	(The `.env` file is initially created with default settings by the `init.py` script)
 
 - Django settings: see `src/eoa/settings.py`
 
diff --git a/scripts/utils/settings.py b/scripts/utils/settings.py
index c3e0f63..3e58f19 100644
--- a/scripts/utils/settings.py
+++ b/scripts/utils/settings.py
@@ -31,26 +31,31 @@ def load_config(
         config = { "PATH": path, ** config }
     return config
 
-def create_docker_env_file():
-    import subprocess
-    user = subprocess.check_output(
-            shlex.split("id -u"),
-            universal_newlines=True
-        ).rstrip("\n")
-    group = subprocess.check_output(
-            shlex.split("id -g"),
-            universal_newlines=True
-        ).rstrip("\n")
+def create_docker_env_file(
+    overwrite = False
+):
+    if overwrite or not(env_file.exists()):
+        import subprocess
+        user = subprocess.check_output(
+                shlex.split("id -u"),
+                universal_newlines=True
+            ).rstrip("\n")
+        group = subprocess.check_output(
+                shlex.split("id -g"),
+                universal_newlines=True
+            ).rstrip("\n")
 
-    print( "user id: {}, group id: {}".format( user, group) )
-    print( "writing docker .env file to {}, appended user and group".format( env_file ) )
-    config = __load_orig_config( orig_config_file )
-    config['config']['USER'] = user
-    config['config']['GROUP'] = group
-    __write_as_env(
-        config,
-        env_file 
-    )
+        print( "user id: {}, group id: {}".format( user, group) )
+        print( "writing docker .env file to {}, appended user and group".format( env_file ) )
+        config = __load_orig_config( orig_config_file )
+        config['config']['USER'] = user
+        config['config']['GROUP'] = group
+        __write_as_env(
+            config,
+            env_file 
+        )
+    else:
+        print( f"INFO: '{env_file}' already exists" )
 
 def __load_orig_config( filename ):
     config = ConfigParser(