Refactor: split code into several django apps (we call them modules).

dav_base/console_scripts/admin.py

@@ -0,0 +1,109 @@
+import argparse
+import os
+import pkg_resources
+import posix
+import sys
+
+from dav_base.config.modules import DJANGO_MAIN_MODULE, ModuleConfig
+
+VERSION = '0.1'
+
+
+class AdminCommand(object):
+    def _setup_argparser(self):
+        kwargs = {
+            'description': 'Tool to manage the DAV django project installation.',
+            'epilog': 'Off Belay.',
+        }
+        parser = argparse.ArgumentParser(**kwargs)
+
+        parser.add_argument('-V', '--version', action='version',
+                            version='%(prog)s ' + VERSION)
+
+        subparsers = parser.add_subparsers(dest='subcmd', metavar='CMD',
+                                           title='subcommands',
+                                           description="Use '%(prog)s CMD -h' to show help for a subcommand")
+        subparser = subparsers.add_parser('setup', help='Setup the installation.')
+        subparser.add_argument('path', metavar='PATH',
+                               help='A directory, where the project files will be installed.')
+
+        return parser
+
+    def _parse_args(self, argv=None):
+        if argv is None:
+            argv = sys.argv[1:]
+        if not argv:
+            argv = ['--help']
+
+        return self._argparser.parse_args(argv)
+
+    def _subcmd_setup(self, cmd_args):
+        django_main_module = DJANGO_MAIN_MODULE
+        django_base_dir = cmd_args.path
+        
+        sys.stdout.write('Setup installation in \'{path}\'...\n'.format(path=django_base_dir))
+
+        if os.path.exists(django_base_dir):
+            if not os.path.isdir(django_base_dir):
+                sys.stderr.write('{path}: Not a directory.\n'.format(path=django_base_dir))
+                return posix.EX_USAGE
+        else:
+            os.makedirs(django_base_dir)
+
+        sys.stdout.write('Creating django project...\n')
+        django_cmd = 'django-admin startproject {name} "{path}"'.format(name=django_main_module,
+                                                                        path=django_base_dir)
+        exitval = os.system(django_cmd)
+        if exitval != posix.EX_OK:
+            return exitval
+
+        sys.stdout.write('Creating directories...\n')
+        dirs = [
+            os.path.join(django_base_dir, 'common', 'templates'),
+            os.path.join(django_base_dir, 'var', 'db'),
+            os.path.join(django_base_dir, 'var', 'log'),
+            os.path.join(django_base_dir, 'var', 'www', 'static'),
+        ]
+
+        for d in dirs:
+            sys.stdout.write('  - %s\n' % d)
+            os.makedirs(d)
+
+        sys.stdout.write('Configure django project...\n')
+
+        config = ModuleConfig(django_base_dir=django_base_dir)
+        config.save()
+
+        input_file = os.path.join('django_project_config', 'additional_settings.py')
+        output_file = os.path.join(django_base_dir, django_main_module, 'settings.py')
+        with open(output_file, 'a') as f:
+            f.write(pkg_resources.resource_string(__package__, input_file))
+
+        input_file = os.path.join('django_project_config', 'urls.py')
+        output_file = os.path.join(django_base_dir, django_main_module, 'urls.py')
+        with open(output_file, 'w') as f:
+            f.write(pkg_resources.resource_string(__package__, input_file))
+
+        input_file = os.path.join('django_project_config', 'settings-dav_base.py')
+        output_file = os.path.join(django_base_dir, django_main_module, 'settings-dav_base.py')
+        with open(output_file, 'w') as f:
+            f.write(pkg_resources.resource_string(__package__, input_file))
+
+        return posix.EX_OK
+
+    def __init__(self):
+        self._argparser = self._setup_argparser()
+
+    def __call__(self, argv=None):
+        cmd_args = self._parse_args(argv)
+        subcmd = cmd_args.subcmd
+        method_name = '_subcmd_{}'.format(subcmd)
+        method = getattr(self, method_name)
+        exitval = method(cmd_args)
+        return exitval
+
+
+def main():
+    cmd = AdminCommand()
+    exitval = cmd()
+    sys.exit(exitval)