diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..7133ca7
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,3 @@
+include README.md
+include LICENCE.md
+include requirements.txt
diff --git a/main.py b/main.py
deleted file mode 100644
index e39d82b..0000000
--- a/main.py
+++ /dev/null
@@ -1,152 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-
-import argparse
-import os
-import subprocess
-import sys
-
-import requests
-from ruamel.yaml import YAML, scalarstring
-
-
-class BlacklistImporter:
-	def __init__(self, args):
-		self.outfile = args.outfile
-		self.dryrun = args.dryrun
-		self.path = os.path.dirname(__file__)
-		self.url = "https://raw.githubusercontent.com/JabberSPAM/blacklist/master/blacklist.txt"
-		self.blacklist = ""
-		self.change = False
-
-	def request(self):
-		"""
-		determine if the download is required
-		"""
-		etag_path = "/".join([self.path, ".etag"])
-		blacklist_path = "/".join([self.path, "blacklist.txt"])
-
-		# check if etag header is present if not set local_etag to ""
-		if os.path.isfile(etag_path):
-			# catch special case were etag file is present and blacklist.txt is not
-			if not os.path.isfile(blacklist_path):
-				local_etag = ""
-			else:
-				# if both files are present continue normally
-				with open(etag_path, "r") as local_file:
-					local_etag = local_file.read()
-		else:
-			local_etag = ""
-
-		with requests.Session() as s:
-			# head request to check etag
-			head = s.head(self.url)
-			etag = head.headers['etag']
-
-			# if etags match up or if the connection is not possible fall back to local cache
-			if local_etag == etag or head.status_code != 200:
-				# if local cache is present overwrite blacklist var
-				if os.path.isfile(blacklist_path):
-					with open(blacklist_path, "r", encoding="utf-8") as local_file:
-						self.blacklist = local_file.read()
-
-			# in any other case request a new file
-			else:
-				r = s.get(self.url)
-				r.encoding = 'utf-8'
-				local_etag = head.headers['etag']
-				self.blacklist = r.content.decode()
-
-				with open(blacklist_path, "w") as local_file:
-					local_file.write(self.blacklist)
-
-				with open(etag_path, 'w') as local_file:
-					local_file.write(local_etag)
-
-	def main(self):
-		# first check if blacklist is updated
-		self.request()
-
-		# only output the selected outfile
-		if self.dryrun:
-			print("outfile selected: %s" % self.outfile)
-
-		# blacklist processing
-		self.process()
-
-		# reload config if changes have been applied
-		if self.change:
-			# catch ejabberdctl missing
-			if os.path.isfile('/usr/sbin/ejabberdctl'):
-				subprocess.call(['/usr/sbin/ejabberdctl', 'reload_config'], shell=False)
-
-			# report missing ejabberdctl reload_config
-			else:
-				print('/usr/sbin/ejabberdctl was not found', file=sys.stderr)
-				print('blacklist changes have been applied\nejabberd config was not reloaded', file=sys.stderr)
-				sys.exit(1)
-
-	def process(self):
-		"""
-		function to build and compare the local yaml file to the remote file
-		if the remote file is different, the local file gets overwritten
-		"""
-		# init new YAML variable
-		local_file = YAML(typ="safe")
-
-		# None catch
-		if self.outfile is not None:
-			# prevent FileNotFoundError on first run or file missing
-			if os.path.isfile(self.outfile):
-				local_file = local_file.load(open(self.outfile, "r", encoding="utf-8"))
-
-		# blacklist frame
-		remote_file = {
-			"acl": {
-				"spamblacklist": {
-					"server": []
-				}
-			}
-		}
-
-		# build the blacklist with the given frame to compare to local blacklist
-		for entry in self.blacklist.split():
-			entry = scalarstring.DoubleQuotedScalarString(entry)
-			remote_file["acl"]["spamblacklist"]["server"].append(entry)
-
-		yml = YAML()
-		yml.indent(offset=2)
-		yml.default_flow_style = False
-
-		# if dry-run true print expected content
-		if self.dryrun:
-			yml.dump(remote_file, sys.stdout)
-
-		# only if the local_file and remote_file are unequal write new file
-		elif local_file != remote_file:
-
-			# prevent FileNotFoundError if self.outfile is not assigned
-			if self.outfile is None:
-				print("no outfile assigned", file=sys.stderr)
-				print(parser.format_help(), file=sys.stderr)
-				sys.exit(2)
-
-			# proceed to update the defined outfile
-			elif self.outfile is not None:
-				self.change = True
-				yml.dump(remote_file, open(self.outfile, "w"))
-
-			# if that's impossible break and display help message
-			else:
-				print(parser.format_help(), file=sys.stderr)
-				sys.exit(1)
-
-
-if __name__ == "__main__":
-	parser = argparse.ArgumentParser()
-	parser.add_argument('-o', '--outfile', help='set path to output file', dest='outfile', default=None)
-	parser.add_argument('-dr', '--dry-run', help='perform a dry run', action='store_true', dest='dryrun', default=False)
-	args = parser.parse_args()
-
-	# run
-	BlacklistImporter(args).main()
diff --git a/requirements.txt b/requirements.txt
index ac76703..0ee9f3a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
+appdirs==1.4.4
 requests==2.25.1
-ruamel.yaml==0.16.13
+ruamel.yaml==0.17.2
 ruamel.yaml.clib==0.2.2
-urllib3==1.26.3
+urllib3==1.26.4
diff --git a/setup.cfg b/setup.cfg
new file mode 100644
index 0000000..920adaf
--- /dev/null
+++ b/setup.cfg
@@ -0,0 +1,39 @@
+[metadata]
+name = blimp
+version = attr: blimp.__version__
+url = https://github.com/mightyBroccoli/blacklist_importer
+licence = GPLv3
+author = Nico Wellpott
+author_email = nico@magicbroccoli.de
+description = simple tool to download and update the JabberSpam blacklist list.
+long_description = file: README.md
+long_description_content_type = text/markdown
+classifiers =
+    Development Status :: 4 - Beta
+    Intended Audience :: System Administrators
+    Licence :: OSI Approved :: GNU General Public License v3 (GPLv3)
+    Operating System :: Unix
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: Implementation :: CPython
+    Topic :: Internet :: WWW/HTTP :: Dynamic Content
+
+[options]
+packages = find:
+package_dir = = src
+include_package_data = true
+python_requires = >= 3.7
+
+[options.packages.find]
+where = src
+
+[options.entry_points]
+console_scripts =
+    blimp = blimp.cli:cli
+
+[tool:pytest]
+testpaths = tests
+filterwarnings =
+    error
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..36e690b
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,13 @@
+# -*- coding: utf-8 -*-
+from setuptools import setup
+
+setup(
+    name="Blimp",
+    install_requires=[
+        "appdirs>=1.4",
+        "requests>=2.25",
+        "ruamel.yaml>=0.17",
+        "ruamel.yaml.clib>=0.2",
+        "urllib3>=1.26"
+    ]
+)
diff --git a/src/blimp/__init__.py b/src/blimp/__init__.py
new file mode 100644
index 0000000..19c2b68
--- /dev/null
+++ b/src/blimp/__init__.py
@@ -0,0 +1,5 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+# version
+__version__ = "0.1"
diff --git a/src/blimp/bl_process.py b/src/blimp/bl_process.py
new file mode 100644
index 0000000..06c9c0f
--- /dev/null
+++ b/src/blimp/bl_process.py
@@ -0,0 +1,56 @@
+# -*- coding: utf-8 -*-
+import sys
+
+from ruamel.yaml import YAML, scalarstring
+
+from .misc import local_file_present
+
+
+class ProcessBlocklist:
+    def __init__(self):
+        pass
+
+    @classmethod
+    def process(self, blacklist, outfile, dryrun: bool):
+        """
+        function to build and compare the local yaml file to the remote file
+        if the remote file is different, the local file gets overwritten
+        """
+        # cheeky none catch
+        try:
+            # load local blacklist outfile
+            if local_file_present(outfile):
+                with open(outfile, "r", encoding="utf-8") as local_file:
+                    local_blacklist = local_file.read()
+
+        except TypeError:
+            # no local copy use empty one instead
+            local_blacklist = YAML(typ="safe")
+
+        # blacklist frame
+        remote_file = {"acl": {"spamblacklist": {"server": []}}}
+
+        # build the blacklist with the given frame to compare to local blacklist
+        for entry in blacklist.split():
+            entry = scalarstring.DoubleQuotedScalarString(entry)
+            remote_file["acl"]["spamblacklist"]["server"].append(entry)
+
+        yml = YAML()
+        yml.indent(offset=2)
+        yml.default_flow_style = False
+
+        # if dry-run true print expected content
+        if dryrun:
+            yml.dump(remote_file, sys.stdout)
+            return
+
+        if local_blacklist == remote_file:
+            return
+
+        if outfile is None:
+            print("no outfile assigned", file=sys.stderr)
+            sys.exit(2)
+
+        # proceed to update the defined outfile
+        with open(outfile, "w", encoding="utf-8") as new_local_file:
+            yml.dump(remote_file, new_local_file)
diff --git a/src/blimp/cli.py b/src/blimp/cli.py
new file mode 100644
index 0000000..12bd1dc
--- /dev/null
+++ b/src/blimp/cli.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import argparse
+
+from .main import Blimp
+
+
+def cli():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-out", "--outfile", help="set path to output file", action="store", default=None)
+    parser.add_argument("-dr", "--dry-run", help="perform a dry run", action="store_true", default=False)
+    args = parser.parse_args()
+
+    # run
+    Blimp(args).main()
diff --git a/src/blimp/main.py b/src/blimp/main.py
new file mode 100644
index 0000000..93fdc29
--- /dev/null
+++ b/src/blimp/main.py
@@ -0,0 +1,96 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from pathlib import Path
+
+import requests
+from appdirs import user_cache_dir
+
+from .bl_process import ProcessBlocklist
+from .misc import local_file_present
+
+
+class Blimp:
+    def __init__(self, args):
+        self.outfile = args.outfile
+        self.dryrun = args.dry_run
+        self.path = Path(user_cache_dir("blimp"))
+        self.url = "https://raw.githubusercontent.com/JabberSPAM/blacklist/master/blacklist.txt"
+        self.blacklist = ""
+        self.apply_changes = False
+
+        self.etag_path = self.path.joinpath(".etag")
+        self.blacklist_path = self.path.joinpath("blacklist.txt")
+
+    def cache_dir_check(self):
+        if not self.path.is_dir():
+            Path(self.path).mkdir(parents=True, exist_ok=True)
+
+    def download_required(self, etag) -> bool:
+        """
+        method to determine if a new download should be initiated
+        :param etag: requests etag object
+        :return: true if download is required
+        """
+        # always trigger download if any local cache file is missing
+        if not local_file_present(self.blacklist_path):
+            return True
+
+        if not local_file_present(self.etag_path):
+            return True
+
+        with open(self.etag_path, "r") as local_file:
+            local_etag = local_file.read()
+
+        # etag file is present but outdated
+        if local_etag != etag:
+            return True
+
+        return False
+
+    def start_request(self):
+        """
+        determine if the download is required
+        """
+        with requests.Session() as s:
+            # head request to check etag
+            head = s.head(self.url)
+            etag = head.headers["etag"]
+
+            if head.status_code != requests.codes.ok:
+                return
+
+            if not self.download_required(etag):
+                with open(self.blacklist_path, "r", encoding="utf-8") as local_file:
+                    self.blacklist = local_file.read()
+
+            else:
+                r = s.get(self.url)
+                r.encoding = "utf-8"
+                local_etag = head.headers["etag"]
+                self.blacklist = r.content.decode()
+
+                with open(self.blacklist_path, "w", encoding="utf-8") as local_file:
+                    local_file.write(self.blacklist)
+
+                with open(self.etag_path, "w", encoding="utf-8") as local_file:
+                    local_file.write(local_etag)
+
+    def main(self):
+        # check the cache dir first
+        self.cache_dir_check()
+
+        # only output the selected outfile
+        if self.dryrun:
+            print("outfile selected: %s" % self.outfile)
+
+        # go
+        self.start_request()
+
+        # blacklist processing
+        ProcessBlocklist.process(self.blacklist, self.outfile, self.dryrun)
+
+
+if __name__ == "__main__":
+    from .cli import cli
+    cli()
diff --git a/src/blimp/misc.py b/src/blimp/misc.py
new file mode 100644
index 0000000..7242e3f
--- /dev/null
+++ b/src/blimp/misc.py
@@ -0,0 +1,13 @@
+# -*- coding: utf-8 -*-
+from pathlib import Path
+
+
+def local_file_present(somepath) -> bool:
+    """
+    check if a given local filepath exists
+    :return: true if present
+    """
+    if not Path(somepath).is_file():
+        return False
+
+    return True