From 6cc921139012969c3ec6c69fe29d802c76f212fe Mon Sep 17 00:00:00 2001
From: Holger Frey <socials@holgerfrey.de>
Date: Tue, 12 Dec 2017 15:31:37 +0100
Subject: [PATCH] added pre_gen hook with additional checks

---
 cookiecutter.json        |  2 +-
 hooks/pre_gen_project.py | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 hooks/pre_gen_project.py

diff --git a/cookiecutter.json b/cookiecutter.json
index fe8f086..7787efd 100644
--- a/cookiecutter.json
+++ b/cookiecutter.json
@@ -1,6 +1,6 @@
 {
     "new_wiki": "",
-    "wiki_name": "{{ cookiecutter.new_wiki|title|replace(' ', '')|replace('Wiki', '') }}",
+    "wiki_name": "{{ cookiecutter.new_wiki|title|replace(' ', '') }}",
     "directory_name": "{{ cookiecutter.wiki_name|lower }}",
     "url": "https://{{cookiecutter.directory_name}}.cpi.imtek.uni-freiburg.de/"
 }
diff --git a/hooks/pre_gen_project.py b/hooks/pre_gen_project.py
new file mode 100644
index 0000000..d398a9f
--- /dev/null
+++ b/hooks/pre_gen_project.py
@@ -0,0 +1,25 @@
+import re
+import sys
+from pathlib import Path
+
+MOIN_PATH = '/var/www/moin/wikis'
+MODULE_REGEX = r'^[_a-zA-Z][_a-zA-Z0-9]+$'
+
+module_name = '{{ cookiecutter.directory_name }}'
+
+if not re.match(MODULE_REGEX, module_name):
+    print('ERROR: %s is not a valid Python module name!' % module_name)
+    sys.exit(1)
+
+try:
+    import {{ cookiecutter.directory_name }}
+    print('ERROR: %s is an existing Python module!' % module_name)
+    sys.exit(2)
+except ModuleNotFoundError:
+    pass
+
+
+wiki_path = Path(MOIN_PATH) / module_name
+if wiki_path.exists():
+    print('ERROR: wiki %s already exists!' % module_name)
+    sys.exit(1)