feat: Initializes Matrix Redactor Bot project

Introduces a basic framework for Matrix Redactor Bot, including
.gitignore for environment files and compiled Python files.

Adds LICENSE with MIT license terms and a README for project
overview. Configures a sample YAML file for bot setup.

Sets up a Python package with pyproject.toml, specifying
dependencies and entry points. Implements basic redactor bot
function to redact media and links sent by low-privileged users
in Matrix rooms.

.gitignore

@@ -0,0 +1,4 @@
+venv/
+*.pyc
+__pycache__/
+config.yaml

LICENSE

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+Copyright (c) 2024 Private.coffee Team <support@private.coffee>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Matrix Redactor Bot

config.dist.yaml

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+homeserver: https://matrix.example.com
+user_id: "@example:example.com"
+access_token: syt_1234567890

pyproject.toml

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+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "matrix_redactorbot"
+version = "0.1.5"
+authors = [{ name = "Private.coffee Team", email = "support@private.coffee" }]
+description = "A simple bot to redact media and links sent by unprivileged users in Matrix rooms."
+readme = "README.md"
+license = { file = "LICENSE" }
+requires-python = ">=3.10"
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+]
+dependencies = ["matrix-nio", "pyyaml"]
+
+[project.scripts]
+redactorbot = "matrix_redactorbot.main:main"
+
+[project.urls]
+"Homepage" = "https://git.private.coffee/privatecoffee/matrix-redactorbot"
+"Bug Tracker" = "https://git.private.coffee/privatecoffee/matrix-redactorbot/issues"
+"Source Code" = "https://git.private.coffee/privatecoffee/matrix-redactorbot"

src/matrix_redactorbot/main.py

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+import re
+import yaml
+import nio
+from nio import AsyncClient, MatrixRoom, RoomMessage, RoomMessageText
+
+# Regular expression to identify URLs in the text
+url_regex = re.compile(r"(https?://\S+)|(www\.\S+)")
+
+
+class RedactorBot:
+    def __init__(self, homeserver, user_id, access_token, sync_timeout):
+        self.client = AsyncClient(homeserver, user_id)
+        self.client.access_token = access_token
+        self.sync_timeout = sync_timeout
+        self.client.add_event_callback(self.message_callback, RoomMessage)
+
+    async def message_callback(self, room: MatrixRoom, event: RoomMessage):
+        if isinstance(event, RoomMessageText):
+            power_levels_event = room.power_levels
+            user_power_level = power_levels_event.users.get(event.sender, 0)
+
+            # Check whether the sender is a power level 0 user
+            if user_power_level == 0:
+                # Check for media content or links
+                if "url" in event.source["content"] or url_regex.search(event.body):
+                    response = await self.client.room_redact(
+                        room_id=room.room_id,
+                        event_id=event.event_id,
+                        reason="Message redacted due to insufficient power level",
+                    )
+                    if isinstance(response, nio.RedactResponse):
+                        print(
+                            f"Redacted message from {event.sender} in {room.display_name}"
+                        )
+                    else:
+                        print(f"Failed to redact message: {response}")
+
+    async def run(self):
+        await self.client.sync_forever(timeout=self.sync_timeout)
+
+
+def load_config(file_path="config.yaml"):
+    with open(file_path, "r") as config_file:
+        return yaml.safe_load(config_file)
+
+
+# Load the configuration
+config = load_config()
+
+bot = RedactorBot(
+    homeserver=config["homeserver"],
+    user_id=config["user_id"],
+    access_token=config["access_token"],
+    sync_timeout=config.get("sync_timeout", 30000),
+)
+
+
+def main():
+    try:
+        import asyncio
+
+        asyncio.get_event_loop().run_until_complete(bot.run())
+    except KeyboardInterrupt:
+        print("Bot stopped by user")
+
+
+if __name__ == "__main__":
+    main()