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// Glaze Library
// For the license information refer to glaze.hpp
#include <fstream>
#include <iostream>
#include "glaze/glaze.hpp"
#include "glaze/net/http_server.hpp"
#include "ut/ut.hpp"
using namespace ut;
struct User
{
int id{};
std::string name{};
std::string email{};
};
struct ErrorResponse
{
std::string error{};
};
int main()
{
// Create a server
glz::http_server server;
// Mock database
std::unordered_map<int, User> users = {{1, {1, "John Doe", "john@example.com"}},
{2, {2, "Jane Smith", "jane@example.com"}}};
int next_id = 3;
// Set up routes for API
server.get("/api/users", [&](const glz::request& /*req*/, glz::response& res) {
std::vector<User> user_list;
for (const auto& [id, user] : users) {
user_list.push_back(user);
}
res.json(user_list);
});
server.get("/api/users/:id", [&](const glz::request& req, glz::response& res) {
try {
// Get the id from the path parameters
int id = std::stoi(req.params.at("id"));
// Find the user
auto it = users.find(id);
if (it != users.end()) {
res.json(it->second);
}
else {
res.status(404).json(ErrorResponse{"User not found"});
}
}
catch (const std::exception& e) {
res.status(400).json(ErrorResponse{"Invalid user ID"});
}
});
server.post("/api/users", [&](const glz::request& req, glz::response& res) {
// Parse JSON request body
auto result = glz::read_json<User>(req.body);
if (!result) {
res.status(400).json(ErrorResponse{glz::format_error(result, req.body)});
return;
}
User user = result.value();
user.id = next_id++;
// Add to database
users[user.id] = user;
// Return the created user
res.status(201).json(user);
});
// Serve the frontend files
server.get("/", [](const glz::request& /*req*/, glz::response& res) {
// Inline HTML for simplicity (in a real app, you would read from a file)
std::string html = R"(
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Glaze REST API Demo</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
margin: 0;
padding: 20px;
background-color: #f5f5f5;
color: #333;
}
.container {
max-width: 800px;
margin: 0 auto;
background-color: white;
border-radius: 8px;
padding: 20px;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
h1 {
color: #2c3e50;
margin-top: 0;
}
h2 {
color: #3498db;
margin-top: 30px;
}
.card {
border: 1px solid #ddd;
border-radius: 4px;
padding: 15px;
margin-bottom: 15px;
transition: transform 0.2s;
}
.card:hover {
transform: translateY(-2px);
box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
.form-group {
margin-bottom: 15px;
}
label {
display: block;
margin-bottom: 5px;
font-weight: bold;
}
input[type="text"],
input[type="email"] {
width: 100%;
padding: 8px;
border: 1px solid #ddd;
border-radius: 4px;
box-sizing: border-box;
}
button {
background-color: #3498db;
color: white;
border: none;
padding: 10px 15px;
border-radius: 4px;
cursor: pointer;
transition: background-color 0.2s;
}
button:hover {
background-color: #2980b9;
}
.user-id {
font-weight: bold;
color: #7f8c8d;
}
.error {
color: #e74c3c;
margin-top: 10px;
}
.success {
color: #27ae60;
margin-top: 10px;
}
#loading {
text-align: center;
margin: 20px 0;
display: none;
}
.hidden {
display: none;
}
</style>
</head>
<body>
<div class="container">
<h1>Glaze REST API Demo</h1>
<p>A simple demonstration of the Glaze REST API functionality.</p>
<h2>All Users</h2>
<div id="usersList"></div>
<div id="loading">Loading...</div>
<h2>Get User by ID</h2>
<div class="form-group">
<label for="userId">User ID:</label>
<input type="text" id="userId" placeholder="Enter user ID">
</div>
<button id="getUser">Get User</button>
<div id="userResult" class="hidden card"></div>
<div id="userError" class="error hidden"></div>
<h2>Add New User</h2>
<div class="form-group">
<label for="userName">Name:</label>
<input type="text" id="userName" placeholder="Enter name">
</div>
<div class="form-group">
<label for="userEmail">Email:</label>
<input type="email" id="userEmail" placeholder="Enter email">
</div>
<button id="addUser">Add User</button>
<div id="addSuccess" class="success hidden">User added successfully!</div>
<div id="addError" class="error hidden"></div>
</div>
<script>
// Fetch all users
async function fetchUsers() {
document.getElementById('loading').style.display = 'block';
document.getElementById('usersList').innerHTML = '';
try {
const response = await fetch('/api/users');
const users = await response.json();
document.getElementById('loading').style.display = 'none';
if (users.length === 0) {
document.getElementById('usersList').innerHTML = '<p>No users found</p>';
return;
}
users.forEach(user => {
const userCard = document.createElement('div');
userCard.className = 'card';
userCard.innerHTML = `
<p><span class="user-id">ID: ${user.id}</span></p>
<p><strong>Name:</strong> ${user.name}</p>
<p><strong>Email:</strong> ${user.email}</p>
`;
document.getElementById('usersList').appendChild(userCard);
});
} catch (error) {
document.getElementById('loading').style.display = 'none';
document.getElementById('usersList').innerHTML = `<p class="error">Error loading users: ${error.message}</p>`;
}
}
// Get user by ID
document.getElementById('getUser').addEventListener('click', async () => {
const userId = document.getElementById('userId').value;
if (!userId) {
document.getElementById('userError').textContent = 'Please enter a user ID';
document.getElementById('userError').classList.remove('hidden');
document.getElementById('userResult').classList.add('hidden');
return;
}
try {
const response = await fetch(`/api/users/${userId}`);
const data = await response.json();
if (response.status === 404) {
document.getElementById('userError').textContent = data.error || 'User not found';
document.getElementById('userError').classList.remove('hidden');
document.getElementById('userResult').classList.add('hidden');
return;
}
if (response.status === 400) {
document.getElementById('userError').textContent = data.error || 'Invalid request';
document.getElementById('userError').classList.remove('hidden');
document.getElementById('userResult').classList.add('hidden');
return;
}
document.getElementById('userError').classList.add('hidden');
document.getElementById('userResult').classList.remove('hidden');
document.getElementById('userResult').innerHTML = `
<p><span class="user-id">ID: ${data.id}</span></p>
<p><strong>Name:</strong> ${data.name}</p>
<p><strong>Email:</strong> ${data.email}</p>
`;
} catch (error) {
document.getElementById('userError').textContent = `Error: ${error.message}`;
document.getElementById('userError').classList.remove('hidden');
document.getElementById('userResult').classList.add('hidden');
}
});
// Add new user
document.getElementById('addUser').addEventListener('click', async () => {
const name = document.getElementById('userName').value;
const email = document.getElementById('userEmail').value;
if (!name || !email) {
document.getElementById('addError').textContent = 'Please fill in all fields';
document.getElementById('addError').classList.remove('hidden');
document.getElementById('addSuccess').classList.add('hidden');
return;
}
try {
const response = await fetch('/api/users', {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({ name, email })
});
const data = await response.json();
if (response.status !== 201) {
document.getElementById('addError').textContent = data.error || 'Failed to add user';
document.getElementById('addError').classList.remove('hidden');
document.getElementById('addSuccess').classList.add('hidden');
return;
}
document.getElementById('addError').classList.add('hidden');
document.getElementById('addSuccess').classList.remove('hidden');
document.getElementById('userName').value = '';
document.getElementById('userEmail').value = '';
// Refresh the users list
fetchUsers();
} catch (error) {
document.getElementById('addError').textContent = `Error: ${error.message}`;
document.getElementById('addError').classList.remove('hidden');
document.getElementById('addSuccess').classList.add('hidden');
}
});
// Initialize
document.addEventListener('DOMContentLoaded', () => {
fetchUsers();
});
</script>
</body>
</html>
)";
res.content_type("text/html").body(html);
});
// Start the server
server.bind("127.0.0.1", 8080).with_signals(); // Enable built-in signal handling
std::cout << "Server listening on http://127.0.0.1:8080" << std::endl;
std::cout << "Press Ctrl+C to gracefully shut down the server" << std::endl;
server.start();
// Wait for shutdown signal (blocks until server stops)
server.wait_for_signal();
std::cout << "Server shut down successfully" << std::endl;
return 0;
}
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