feat!: pip-installable package

Resolves #8

BREAKING CHANGE: Database initialization is no longer handled by init_db.py in the project root; instead, install the package and use the console script invenflask-init-db.
BREAKING CHANGE: A development server can no longer be started by the invocation "flask app.py"; instead, install the package and use the invocation "flask --app invenflask.app run".

MANIFEST.in

@@ -0,0 +1,2 @@
+include src/invenflask/schema.sql
+include src/invenflask/templates/*.html

README.md

@@ -1,22 +1,35 @@
 # Invenflask
 [![Release](https://github.com/drahamim/invenflask/actions/workflows/release.yml/badge.svg)](https://github.com/drahamim/invenflask/actions/workflows/release.yml)
 
-Dependancies:
-sqlite3 3.32.3
-Python 3.10.9
-Flask 2.2.2
-Werkzeug 2.2.2
-
+A small inventory ledger, based on Flask.
 
 
 ## Setup
-Initialize the database\
-``` python3 init_db.py```
-
-start flask\
-```flask app.py```
-
 
+Proper Python distributions are currently a work in progress. Until then, install from a git clone or a source code snapshot from [releases](https://github.com/drahamim/invenflask/releases).
+
+Within the unpacked directory:
+1. Set up virtual environment:
+   ```
+   python3 -m venv venv
+   ```
+2. Install invenflask:
+   ```
+   venv/bin/pip install .
+   ```
+3. Initialize database:
+   ```
+   venv/bin/invenflask-init-db
+   ```
+   This will create or overwrite a sqlite3 database named `database.db` in the current directory, which is the only setup the application currently understands.
+
+   Note that this is a destructive operation. If `database.db` already exists, all tables that  
+4. Start a development server:
+   ```
+   venv/bin/flask --app invenflask.app run
+   ```
+
+For development, perform an _editable install_ instead at step 2 above, with `pip install -e .`
 
 ## import staff
 This will require a CSV formatted file 
@@ -32,4 +45,4 @@ sqlite> .mode csv
 sqlite> .import ./test_data/<your staff file>.csv staffs
 # verify it worked
 sqlite> SELECT * from staffs;
-```
+```

pyproject.toml

@@ -0,0 +1,23 @@
+[project]
+name = "invenflask"
+version = "2.0.0"
+authors = [
+    { name = "Daniel Rahamim" }
+]
+description = "A Flask-based asset checkin/checkout system"
+readme = "README.md"
+requires-python = ">=3.10"
+
+dependencies = [
+    "flask >=2.2.2, <3"
+]
+
+[project.scripts]
+invenflask-init-db = "invenflask.init_db:main"
+
+[project.urls]
+"Bug Tracker" = "https://github.com/drahamim/invenflask/issues"
+
+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"

src/invenflask/init_db.py

@@ -0,0 +1,24 @@
+import argparse
+from importlib.resources import files
+import sqlite3
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        prog="invenflask-init-db",
+        description="Initialize the database for an invenflask instance"
+    )
+    parser.add_argument(
+        '--database',
+        default="database.db",
+        help="Database file to (re)initialize"
+    )
+    args = parser.parse_args()
+
+    schema_sql = files("invenflask").joinpath("schema.sql").read_text()
+    connection = sqlite3.connect(args.database)
+    try:
+        connection.executescript(schema_sql)
+        connection.commit()
+    finally:
+        connection.close()