Add Makefile and refactor package structure

- Replace shell script with Makefile for build/install tasks
- Move main logic into main() function for proper packaging
- Configure package entrypoint in pyproject.toml

Makefile

@@ -0,0 +1,25 @@
+.PHONY: default venv build install clean
+
+default: install
+
+venv:
+	@[ ! -d ./venv ] && python3 -m venv venv && bash -c \
+		"source venv/bin/activate && \
+		pip install --upgrade pip && \
+		pip install -r requirements.txt" || true
+
+build: venv
+	@if [ -n "$$(git status --porcelain)" ]; then \
+		echo "[ERROR]: There are uncommitted changes or untracked files."; \
+		exit 1; \
+	fi
+	@bash -c \
+		"source venv/bin/activate && \
+		pip install build twine && \
+		python -m build"
+
+install: venv
+	@bash -c "source venv/bin/activate && pip install -e ."
+
+clean:
+	rm -rf venv dist tarc.egg-info

pyproject.toml

@@ -1,4 +1,7 @@
 [project]
 name = "tarc"
-version = "0.0.1dev2"
+version = "0.0.1dev3"
 description = "Manage BT archives"
+
+[project.scripts]
+tarc = "tarc:main"

tarc.sh

@@ -1,20 +0,0 @@
-#!/bin/bash
-
-# Create a virtual environment if it does not exist
-if [ ! -d "venv" ]; then
-  # shellcheck disable=SC1091
-  python3 -m venv venv && \
-  source venv/bin/activate && \
-  pip install -r requirements.txt && \
-  deactivate
-fi
-
-# Activate the virtual environment
-# shellcheck disable=SC1091
-source venv/bin/activate
-
-# Run the Python script
-python tarc/main.py "$@"
-
-# Deactivate the virtual environment
-deactivate

tarc/__init__.py

@@ -0,0 +1,5 @@
+"""
+tarc - Manage BT archives
+"""
+
+from .main import main

tarc/main.py

@@ -154,27 +154,32 @@ def list_clients(conn):
     return rows
 
 
-parser = argparse.ArgumentParser(description="Manage BT archives", prog="tarc")
-subparsers = parser.add_subparsers(
+def main():
+    """
+    Entrypoint of the program.
+    """
+
+    parser = argparse.ArgumentParser(description="Manage BT archives", prog="tarc")
+    subparsers = parser.add_subparsers(
         dest="command", required=True, help="Available commands"
-)
+    )
 
-scan_parser = subparsers.add_parser("scan", help="Scan command")
-scan_parser.add_argument("--debug", action="store_true", help="Enable debug mode")
-scan_parser.add_argument(
+    scan_parser = subparsers.add_parser("scan", help="Scan command")
+    scan_parser.add_argument("--debug", action="store_true", help="Enable debug mode")
+    scan_parser.add_argument(
         "--confirm-add", action="store_true", help="Confirm adding a new client"
-)
-scan_parser.add_argument("-n", "--name", help="Name of client")
-scan_parser.add_argument("-d", "--directory", help="Directory to scan")
-scan_parser.add_argument("-t", "--type", help="Scan type")
-scan_parser.add_argument("-e", "--endpoint", help="Endpoint URL")
-scan_parser.add_argument("-u", "--username", help="Username")
-scan_parser.add_argument("-p", "--password", help="Password")
-scan_parser.add_argument("-s", "--storage", help="Path of sqlite3 database")
+    )
+    scan_parser.add_argument("-n", "--name", help="Name of client")
+    scan_parser.add_argument("-d", "--directory", help="Directory to scan")
+    scan_parser.add_argument("-t", "--type", help="Scan type")
+    scan_parser.add_argument("-e", "--endpoint", help="Endpoint URL")
+    scan_parser.add_argument("-u", "--username", help="Username")
+    scan_parser.add_argument("-p", "--password", help="Password")
+    scan_parser.add_argument("-s", "--storage", help="Path of sqlite3 database")
 
-args = parser.parse_args()
+    args = parser.parse_args()
 
-if args.command == "scan":
+    if args.command == "scan":
         if args.storage is None:
             STORAGE = os.path.expanduser("~/.tarch.db")
         else:
@@ -255,8 +260,14 @@ if args.command == "scan":
                             print(f"[DEBUG]: Tracker {repr(elem)}")
                         print("\n", end="")
             else:
-            print(f'[ERROR]: Multiple clients ({len(clients)}) using "{args.endpoint}"')
+                print(
+                    f'[ERROR]: Multiple clients ({len(clients)}) using "{args.endpoint}"'
+                )
                 sys.exit(1)
         else:
             print("[ERROR]: Must specify directory OR client endpoint")
             sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()