backend: initi backend

backend/.gitignore

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+**/*.env

backend/Dockerfile

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+FROM python:3.13-slim-bookworm
+
+ENV PYTHONPATH=/usr/local/lib
+
+COPY . /app
+WORKDIR /app
+
+RUN pip3 install -r requirements.txt
+
+CMD ["/bin/sh", "entrypoint.sh"]

backend/entrypoint.sh

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+#! /bin/sh
+
+python3 -m flask \
+--app /app/src/server.py \
+run --host=0.0.0.0

backend/requirements.txt

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+flask==3.0.2
+mysql-connector-python==9.4.0
+python_dotenv==1.1.1

backend/run.sh

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+#!/bin/bash
+
+# Generate a random name for the container using uuidgen
+container_name=$(uuidgen)
+
+# Build the Docker image with your project code and unit tests
+docker build -t nyi-backend -f Dockerfile .
+
+# Run the Docker container with the unit tests and attach the output
+docker run --tty --rm --name "$container_name" -p 2027:5000 nyi-backend
+
+# Exit the script with the exit code of the container
+exit $?

backend/src/db_client.py

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+
+#!/usr/bin/env python
+# encoding: utf-8
+
+'''
+db_client.py is the module for managing teh Dungeon's database services.
+'''
+
+import mysql.connector
+import os
+
+class DBClient:
+    def __init__(self):
+        self.db_server = os.environ.get('DB_SERVER')
+        self.db_port = os.environ.get('DB_PORT')
+        self.user = 'root'
+        self.password = os.environ.get('ROOT_PWD')
+        self.database = os.environ.get('DB_NAME')
+
+        if not self.db_server:
+            raise ValueError("Environment variable 'DB_SERVER' is not set.")
+        if not self.db_port:
+            raise ValueError("Environment variable 'DB_PORT' is not set.")
+        if not self.password:
+            raise ValueError("Environment variable 'ROOT_PWD' is not set.")
+        if not self.database:
+            raise ValueError("Environment variable 'DB_NAME' is not set.")
+
+        self.connection = mysql.connector.connect(
+            host=self.db_server,
+            port=self.db_port,
+            user=self.user,
+            password=self.password,
+            database=self.database
+        )
+
+        self.cursor = self.connection.cursor()
+        self.initialize_database()
+
+    def create_database(self, db_name):
+        query = f"CREATE DATABASE IF NOT EXISTS `{db_name}`;"
+        self.cursor.execute(query)
+
+    def switch_database(self, db_name):
+        self.connection.database = db_name
+
+    def initialize_database(self):
+        self.create_database(self.database)
+        self.switch_database(self.database)
+        self.query("""CREATE TABLE IF NOT EXISTS users (
+            Name varchar(255),
+            Attendance bool,
+            HasCar bool
+        );""")
+
+    def query(self, query_str, quiet=False):
+        self.cursor.execute(query_str)
+        if quiet:
+            return []
+        return self.cursor.fetchall()
+
+    def close(self):
+        self.cursor.close()
+        self.connection.close()
+

backend/src/server.py

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+#!/usr/bin/env python
+# encoding: utf-8
+
+'''
+server.py is the main source file for the Dungeon's backend service.
+'''
+
+from flask import Flask, request, jsonify
+from dotenv import load_dotenv
+from db_client import DBClient
+
+load_dotenv()
+app = Flask(__name__)
+database = DBClient()
+
+@app.route('/login', methods=['POST'])
+def login():
+    if request.is_json:
+        return request.json, 200
+    else:
+        return jsonify({'error': 'Request must contain JSON data'}), 400
+
+if __name__ == "__main__":
+    app.run(debug=True)