diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 0000000..67934ab
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,186 @@
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+
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+
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+
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+
+[[package]]
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+category = "dev"
+optional = false
+python-versions = ">=3.7"
+
+[package.extras]
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+
+[[package]]
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+category = "dev"
+optional = false
+python-versions = ">=3.7"
+
+[[package]]
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+version = "4.2.0"
+description = "Backported and Experimental Type Hints for Python 3.7+"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
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+]
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..7286920
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,21 @@
+[tool.poetry]
+name = "changelog"
+version = "0.1.0"
+description = "A tool for managing SUSE release notes changelogs"
+authors = ["Lukáš Kucharczyk <lukas.kucharczyk@suse.com>"]
+license = "GPL"
+
+[tool.poetry.scripts]
+changelog = 'changelog:changelog.cli'
+
+[tool.poetry.dependencies]
+python = "^3.10"
+click = "^8.1.3"
+
+[tool.poetry.dev-dependencies]
+black = "^22.3.0"
+mypy = "^0.950"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"
diff --git a/src/__init__.py b/src/changelog/__init__.py
similarity index 100%
rename from src/__init__.py
rename to src/changelog/__init__.py
diff --git a/src/changelog/changelog.py b/src/changelog/changelog.py
new file mode 100644
index 0000000..174fb48
--- /dev/null
+++ b/src/changelog/changelog.py
@@ -0,0 +1,76 @@
+import re
+from typing import IO
+import click
+import logging
+
+
+logging.basicConfig(level=logging.ERROR)
+text: list[str]
+jira_url: str = "https://jira.suse.com/browse/"
+bugzilla_url: str = "https://bugzilla.suse.com/show_bug.cgi?id="
+gitlab_url: str = "https://gitlab.suse.de/documentation/release-notes-sles/-/commit/"
+search_pattern: str = r"((?:jsc#SLE-|bsc#)[0-9]+)"
+
+
+def format_section_id(id_string: str) -> str:
+    newstring: str = ""
+    newstring = id_string.replace("#", "-")
+    return newstring
+
+
+def make_adoc_url(url: str, title: str) -> str:
+    return "{}[{}]".format(url, title)
+
+
+def make_jira_url(issue_number: int) -> str:
+    return make_adoc_url(jira_url + str(issue_number), "Jira")
+
+
+def make_bugzilla_url(issue_number: int) -> str:
+    return make_adoc_url(bugzilla_url + str(issue_number), "Bugzilla")
+
+
+def make_entry(section_id: str, parentheses_text: str) -> str:
+    return "Added <<{}>> ({})".format(section_id, parentheses_text)
+
+
+@click.group()
+def cli():
+    pass
+
+
+def parse_text(input_text: str = ""):
+    """Parses text for Jira or Bugzilla issue numbers and creates entries from them"""
+    if input_text == "":
+        click.echo("No text provided for parsing.")
+    for line in input_text:
+        line = line.strip()
+        if results := re.findall(search_pattern, line, re.IGNORECASE):
+            logging.debug(f"Found matches: {results}")
+            if len(results) != 1:
+                logging.debug("More than 1 match found.")
+            else:
+                logging.debug("Only 1 match found.")
+            parentheses_items: list = []
+            # FIXME: add links to other mentioned sections, for now just link the first one
+            section_id = format_section_id(results[0])
+            for match in results:
+                issue_number = match.split("#").pop()
+                if "jsc" in match:
+                    parentheses_items.append(make_jira_url(issue_number))
+                if "bsc" in match:
+                    parentheses_items.append(make_bugzilla_url(issue_number))
+            parentheses_text = ", ".join(parentheses_items)
+            click.echo(make_entry(section_id, parentheses_text))
+        else:
+            logging.debug(f"Nothing found in line '{line}'. Ignoring.")
+
+
+@cli.command()
+@click.argument("filename", type=click.File())
+def parse(filename: IO):
+    parse_text(filename.readlines())
+
+
+if __name__ == "__main__":
+    cli()
diff --git a/tests/main.py b/tests/main.py
deleted file mode 100644
index 8d1c8b6..0000000
--- a/tests/main.py
+++ /dev/null
@@ -1 +0,0 @@
-