Course Introduction

// app.js
const express = require('express');

const app = express();
app.use(express.json());

// In-memory database
const memoryDb = [];

// Routes
app.get('/items', (req, res) => {
  res.json(memoryDb);
});

app.post('/items', (req, res) => {
  const item = req.body;
  memoryDb.push(item);
  res.status(201).json(item);
});

const PORT = process.env.PORT || 3000;
app.listen(PORT, () => console.log(`Server listening on port ${PORT}`));

// Program.cs (snippet)
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseAntiforgery();

app.MapRazorComponents<App>()
   .AddInteractiveWebAssemblyRenderMode()
   .AddAdditionalAssemblies(typeof(KodeKloudDemo.Client._Imports).Assembly);

app.Run();

# traffic_light_helpers.py
LIGHT_COLORS = {'green': (0, 255, 0), 'yellow': (255, 255, 0), 'red': (255, 0, 0)}
CENTER_X, CENTER_Y = 400, 300
STOP_LINE = {'north': 100, 'south': 500, 'east': 700, 'west': 100}
LIGHT_OFFSET = 30
LIGHT_RADIUS = 10

def get_light_state(direction, cycle_timer):
    """
    Determine a simple light state based on a cycle timer.
    Returns 'green', 'yellow', or 'red'.
    """
    t = cycle_timer % 6
    if t < 3:
        return 'green'
    elif t == 3:
        return 'yellow'
    else:
        return 'red'

def draw_traffic_light(surface, direction, state):
    """
    Draw a circular traffic light for a given direction at a fixed offset
    from the intersection on the provided Pygame surface.
    """
    if direction == 'north':
        pos = (CENTER_X, STOP_LINE['north'] - LIGHT_OFFSET)
    elif direction == 'south':
        pos = (CENTER_X, STOP_LINE['south'] + LIGHT_OFFSET)
    elif direction == 'east':
        pos = (STOP_LINE['east'] - LIGHT_OFFSET, CENTER_Y)
    elif direction == 'west':
        pos = (STOP_LINE['west'] + LIGHT_OFFSET, CENTER_Y)
    else:
        pos = (CENTER_X, CENTER_Y)

    color = LIGHT_COLORS.get(state, (128, 128, 128))
    import pygame
    pygame.draw.circle(surface, color, pos, LIGHT_RADIUS)

# Device-code authentication
First copy your one-time code: 48F0-1714
Press Enter to open https://github.com/login/device in your browser...
✓ Authentication complete.

# Configure git protocol
$ gh config set -h github.com git_protocol https
✓ Configured git protocol

# Confirm login
Logged in as JeremyMorgan

# Install the Copilot extension
$ gh extension install github/gh-copilot

# db_utils.py
import sqlite3
from contextlib import contextmanager

DB_PATH = "data/database.sqlite"

@contextmanager
def get_db_connection():
    """
    Create and manage an SQLite connection for use within a context.

    This function sets the row factory to sqlite3.Row for dictionary-like
    access to rows, and ensures the connection is properly closed after use.

    Yields:
        sqlite3.Connection: An active connection to the SQLite database.

    Raises:
        sqlite3.Error: If there's an error connecting to or interacting with the database.
    """
    conn = sqlite3.connect(DB_PATH)
    conn.row_factory = sqlite3.Row
    try:
        yield conn
    finally:
        conn.close()

INFO:     Started server process [23262]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://0.0.0.0:8000 (Press CTRL+C to quit)
INFO:     127.0.0.1:49774 - "POST /api/v1/getfakedata HTTP/1.1" 200 OK
INFO:     127.0.0.1:49774 - "POST /api/v1/getfakedata HTTP/1.1" 200 OK