10 - "What Should I Eat?" Random Recipe Generator

Description

Develop a web application that helps users answer the age-old question: "What should I eat?". By considering user preferences and available ingredients, the application should:

• Recommend a random recipe out of a large, curated recipe database.

• Display the recipe name, a mouthwatering image, and a brief description.

• Allow users to filter recipes by ingredients, dietary restrictions, cuisine, and cooking time.

• Provide a link to access the full recipe details and instructions.

Algorithm

1. Data Structure:

   • Maintain a large database of diverse recipes containing:

     • Name

     • Image URL

     • Description

     • Ingredients list

     • Dietary restrictions (optional)

     • Cuisine type (optional)

     • Cooking time

   • Store user preferences for ingredients, dietary restrictions, and cuisine (optional).

2. Recipe Randomization:

   • Implement a function to:

     • Filter recipes based on user preferences (if selected).

     • Randomly select a recipe from the filtered or entire database.

3. User Interface:

   • Display a prominent button labeled "What should I eat?".

   • Provide input fields for users to specify preferences.

   • After clicking the button, show the recommended recipe information with an image and link to the full recipe.

4. Bonus Features:

   • Allow users to save their favorite recipes for later reference.

   • Integrate with grocery delivery services for convenient ingredient purchase.

   • Use voice recognition for hands-free preference input.

Code

import React, { useState } from 'react';

const recipes = [
  // ... recipe objects with required and optional properties
];

function WhatShouldIEatApp() {
  const [selectedIngredients, setSelectedIngredients] = useState([]);
  const [selectedCuisine, setSelectedCuisine] = useState('');
  const [recommendedRecipe, setRecommendedRecipe] = useState(null);

  const handleGetRecipe = () => {
    // Filter recipes based on user preferences
    let filteredRecipes = recipes;
    if (selectedIngredients.length > 0) {
      filteredRecipes = filteredRecipes.filter((recipe) =>
        recipe.ingredients.some((ingredient) => selectedIngredients.includes(ingredient))
      );
    }
    if (selectedCuisine) {
      filteredRecipes = filteredRecipes.filter((recipe) => recipe.cuisine === selectedCuisine);
    }

    // Randomly select a recipe from filtered or entire database
    const randomIndex = Math.floor(Math.random() * filteredRecipes.length);
    setRecommendedRecipe(filteredRecipes[randomIndex]);
  };

  return (
    <div className="what-should-i-eat-app">
      <h1>What should I eat?</h1>
      <div className="preferences">
        {/* Input fields for ingredients and cuisine */}
      </div>
      <button onClick={handleGetRecipe}>Get a Recipe!</button>
      {recommendedRecipe && (
        <div className="recommended-recipe">
          <img src={recommendedRecipe.imageUrl} alt={recommendedRecipe.name} />
          <h2>{recommendedRecipe.name}</h2>
          <p>{recommendedRecipe.description}</p>
          <a href={recommendedRecipe.recipeUrl}>Get the full recipe!</a>
        </div>
      )}
    </div>
  );
}

export default WhatShouldIEatApp;

Explanation

1. Data Structure:

• recipes array: Stores recipe objects with properties like name, image URL, description, ingredients, cuisine, and cooking time.

• selectedIngredients and selectedCuisine state variables: Hold user preferences for filtering recipes.

• recommendedRecipe state variable: Stores the randomly selected recipe to display.

2. Recipe Randomization Function:

• handleGetRecipe: Filters recipes based on user preferences (if provided).

• Uses the filter method to create a new array of matching recipes.

• Selects a random recipe from the filtered or entire database using Math.random().

• Updates the recommendedRecipe state to trigger a re-render.

3. User Interface:

• Displays the "What should I eat?" question and input fields for ingredients and cuisine.

• Renders a "Get a Recipe!" button that calls handleGetRecipe on click.

• Conditionally displays a recommended recipe with its image, name, description, and a link to the full recipe if recommendedRecipe is not null.

Additional Notes:

• Consider using an API to access a vast recipe database instead of a static array.

• Implement efficient filtering algorithms for large datasets.

• Prioritize mobile responsiveness for user convenience.

• Add functionalities like recipe ratings and reviews for community engagement.