test/public/app.js

const form = document.getElementById('recipe-form');
const recipesEl = document.getElementById('recipes');
const statusEl = document.getElementById('status');

async function loadRecipes() {
  statusEl.textContent = 'Loading recipes...';
  const res = await fetch('/api/recipes');
  const recipes = await res.json();

  if (!Array.isArray(recipes) || recipes.length === 0) {
    recipesEl.innerHTML = '';
    statusEl.textContent = 'No recipes yet. Add your first recipe above.';
    return;
  }

  statusEl.textContent = `${recipes.length} recipe(s)`;
  recipesEl.innerHTML = recipes
    .map(
      (recipe) => `
      <article class="recipe-card">
        <h3>${escapeHtml(recipe.name)}</h3>
        <strong>Ingredients:</strong>
        <ul>${recipe.ingredients.map((i) => `<li>${escapeHtml(i)}</li>`).join('')}</ul>
        <strong>Instructions:</strong>
        <p>${escapeHtml(recipe.instructions)}</p>
      </article>
    `
    )
    .join('');
}

form.addEventListener('submit', async (event) => {
  event.preventDefault();

  const name = document.getElementById('name').value.trim();
  const ingredients = document
    .getElementById('ingredients')
    .value.split('\n')
    .map((x) => x.trim())
    .filter(Boolean);
  const instructions = document.getElementById('instructions').value.trim();

  const res = await fetch('/api/recipes', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ name, ingredients, instructions })
  });

  if (!res.ok) {
    statusEl.textContent = 'Failed to save recipe. Please check your input.';
    return;
  }

  form.reset();
  await loadRecipes();
});

function escapeHtml(value) {
  return String(value)
    .replace(/&/g, '&amp;')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
    .replace(/\"/g, '&quot;')
    .replace(/'/g, '&#39;');
}

loadRecipes();