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London 9 - Baz Murphy - SQL - Week 2#210

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Binary file added2-exercises/entity-relation-diagram.png
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411 changes: 407 additions & 4 deletions 2-exercises/task.md
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2 changes: 2 additions & 0 deletions 3-projects/cyf-ecommerce-api/.gitignore
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node_modules
package-lock.json
20 changes: 20 additions & 0 deletions 3-projects/cyf-ecommerce-api/package.json
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{
"name": "cyf-ecommerce-api",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "node server.js",
"dev": "nodemon server.js"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"express": "^4.18.2",
"pg": "^8.10.0"
},
"devDependencies": {
"nodemon": "^2.0.22"
}
}
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Binary file added3-projects/cyf-ecommerce-api/public/elephant.png
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25 changes: 25 additions & 0 deletions 3-projects/cyf-ecommerce-api/public/index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="style.css" />
<title>PostgreSQL API - Ecommerce</title>
</head>
<body>
<header>
<img src="elephant.png" alt="" />
<h1>PostgreSQL API - Ecommerce</h1>
</header>
<div>
<h2>Links to API Routes :</h2>
<nav id="nav-links"></nav>
</div>
<div>
<h2>Buttons to Formatted Output :</h2>
<nav id="nav-buttons"></nav>
</div>
<div id="output-container"></div>
<script src="script.js"></script>
</body>
</html>
33 changes: 33 additions & 0 deletions 3-projects/cyf-ecommerce-api/public/script.js
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const paths = ["customers", "suppliers", "products"];

paths.forEach((path) => {
const navLinks = document.getElementById("nav-links");
const link = document.createElement("a");
link.href = `/${path}`;
link.innerText = `/${path}`;
navLinks.appendChild(link);

const navButtons = document.getElementById("nav-buttons");
const button = document.createElement("button");
button.id = `${path}`;
button.innerText = `/${path}`;
button.addEventListener("click", (event) => fetchAndFormat(event.target.id));
navButtons.appendChild(button);
});

async function fetchAndFormat(path) {
try {
const response = await fetch(`/${path}`);
const data = await response.json();
const outputContainer = document.getElementById("output-container");
outputContainer.innerText = "";
const pre = document.createElement("pre");
const code = document.createElement("code");
code.id = "output-json";
code.innerText = JSON.stringify(data, null, 2);
pre.appendChild(code);
outputContainer.appendChild(pre);
} catch (error) {
console.log(error);
}
}
70 changes: 70 additions & 0 deletions 3-projects/cyf-ecommerce-api/public/style.css
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* {
box-sizing: border-box;
font-family: system-ui, sans-serif;
color: black;
font-size: 16px;
font-weight: 400;
}

body {
display: grid;
background-color: hsl(0, 0%, 92%);
max-width: 500px;
margin: 0 auto;
row-gap: 10px;
}

header {
display: flex;
align-items: center;
gap: 20px;
border-bottom: 1px solid hsl(207, 47%, 39%);
padding: 5px;
}

header > img {
max-width: 40px;
max-height: 40px;
}

header > h1 {
margin: 0;
font-size: 24px;
font-weight: 600;
}

h2 {
margin: 0;
font-size: 18px;
font-weight: 600;
}

nav {
display: flex;
flex-wrap: wrap;
gap: 10px;
padding: 5px;
}

button {
background-color: hsl(207, 47%, 39%);
color: hsl(0, 0%, 90%);
border: none;
border-radius: 2px;
padding: 5px 8px;
cursor: pointer;
}

button:hover {
background-color: hsl(207, 47%, 49%);
}

#output-container {
background-color: hsl(0, 0%, 95%);
border: 1px solid darkgray;
padding: 0 10px;
}

#output-json {
font-family: monospace;
}
28 changes: 28 additions & 0 deletions 3-projects/cyf-ecommerce-api/readme.md
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# PostgreSQL Ecommerce API

## Screenshot:

![](project-screenshot.png)

## Instructions:

1. clone this repo
2. install [postgresql](https://www.postgresql.org/)
3. inside the root of the repository, open a terminal:
4. move into the `2-exercises` folder:
`cd 2-exercises`
5. create the database
`createdb cyf_ecommerce`
6. populate the database
`createdb -d cyf_ecommerce -f cyf-cyf_ecommerce.sql`
7. move to the api directory:
`cd ../3-projects/cyf-ecommerce-api`
8. install the project dependencies:
`npm install`
9. start the server in develoment mode:
`npm run dev`
10. visit http://localhost:3000

**Note: this project assumes you are connecting to the database with:**
`username: postgres`
`password: password`
63 changes: 63 additions & 0 deletions 3-projects/cyf-ecommerce-api/server.js
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const express = require("express");
const app = express();

app.use(express.static("public"));

const { Pool } = require("pg");

const db = new Pool({
user: "postgres",
host: "localhost",
database: "cyf_ecommerce",
password: "password",
port: 5432,
});

app.get("/customers", (req, res) => {
db.query("SELECT * FROM customers")
.then((result) => {
res.json(result.rows);
})
.catch((error) => {
console.log(error);
});
});

app.get("/suppliers", (req, res) => {
db.query("SELECT * FROM suppliers")
.then((result) => {
res.json(result.rows);
})
.catch((error) => {
console.log(error);
});
});

app.get("/products", (req, res) => {
db.query(
`SELECT
p.product_name,
pa.unit_price,
s.supplier_name
FROM product_availability pa
INNER JOIN products p
ON (pa.prod_id = p.id)
INNER JOIN suppliers s
ON (pa.supp_id = s.id)
ORDER BY p.product_name, pa.unit_price;`
)
.then((result) => {
res.json(result.rows);
})
.catch((error) => {
console.log(error);
});
});

app.get("/", (req, res) => {
res.sendFile(__dirname + "./public/index.html");
});

app.listen(3000, () => {
console.log("The server is running on port 3000");
});