Nutrition App

The application is used to search for products and their ingredients and to create a diet.

Used API

• Recipe API
• Food Datebase API

Usage API

Object-oriented representation of Recipe Api

const RecipeAPI = {
   _connectionLinks: [
       "https://api.edamam.com/search?app_id=<app_id>&app_key=<app_key>",
       "https://api.edamam.com/search?app_id=<app_id>&app_key=<app_key>",
       "https://api.edamam.com/search?app_id=<app_id>&app_key=<app_key>",
       "https://api.edamam.com/search?app_id=<app_id>&app_key=<app_key>"
   ],
   _lastConnectionLink: 0,

   getConnectionLinkFromInput: function(input={}) {
       if(++this._lastConnectionLink >= this._connectionLinks.length) 
           this._lastConnectionLink = 0 ;

       return this._connectionLinks[this._lastConnectionLink] + 
           (input.q == undefined ? '&q=' : '&q=' + input.q) +
           (input.from === undefined ? '' : '&from=' + input.from) +
           (input.to === undefined ? '' : '&to=' + input.to) +
           (input.ingr === undefined ? '' : '&ingr=' + input.ingr) +
           (input.diet === undefined ? '' : '&diet=' + input.diet) +
           (input.health === undefined ? '' : '&health=' + input.health) +
           (input.cuisineType === undefined ? '' : '&cuisineType=' + input.cuisineType) +
           (input.mealType === undefined ? '' : '&mealType=' + input.mealType) +
           (input.dishType === undefined ? '' : '&dishType=' + input.dishType) +
           (input.calories === undefined ? '' : '&calories=' + input.calories) +
           (input.time === undefined ? '' : '&time=' + input.time) +
           (input.excluded === undefined ? '' : '&excluded=' + input.excluded);
   },
   fetchRecipes: async function(input) {
       let conn = this.getConnectionLinkFromInput(input)
       let recipes = await fetch(conn)
           .then(response => response.json())
           .then(data => data.hits.map( d => d.recipe))
           .catch(err => console.log(err));
       return recipes;
   }
}

This object allows to get recipes matched to input.

Calorie Calculator

Nutrition App is ideal for people starting a healthy lifestyle. The application has a calorie calculator that can calculate the optimal number of calories that we should eat during the day. The calculator requires the following parameters:

• Weight
• Height
• Age
• Gender
• Activity Level
  • Sedentary: little or no exercise
  • Light: exercise 1-3 times/week
  • Moderate: exercise 4-5 times/week
  • Active: daily exercise or intense exercise 3-4 times/week
  • Very Active: intense exercise 6-7 times/week
  • Extra Active: very intense exercise daily, or physical job
  • Basal Metabolic Rate (BMR)
• Gender
• Body fat

Implementation

Implementation of calorie calculator is based on Revised Harris-Benedict Equation :

For men: BMR = 13.397W + 4.799H - 5.677A + 88.362

For women: BMR = 9.247W + 3.098H - 4.330A + 447.593

Where :

• W is body weight in kg
• H is body height in cm
• A is age
• F is body fat in percentage

calculator: function(weight, height, age, gender, activityLevel = 0, bodyFat = 0){
     let bmr;
     if(bodyFat == 0) {
         bmr = gender === 'female' ? 
         9.247 * weight + 3.098 * height - 4.330 * age + 447.593 : 
         13.397 * weight + 4.799 * height - 5.677 * age + 88.362;
     } else {
         bmr = 370 + 21.6 * (1 - bodyFat) * weight;
     }
     
     switch (parseInt(activityLevel)) {
         case 1: // Sedentary: little or no exercise
             return this.Calories = Math.floor(bmr * 1.2);
         case 2: // Light: exercise 1-3 times/week
             return this.Calories = Math.floor(bmr * 1.375);
         case 3: // Moderate: exercise 4-5 times/week
             return this.Calories = Math.floor(bmr * 1.465);
         case 4: // Active: daily exercise or intense exercise 3-4 times/week
             return this.Calories = Math.floor(bmr * 1.55);
         case 5: // Very Active: intense exercise 6-7 times/week
             return this.Calories = Math.floor(bmr * 1.725);
         case 6: // Extra Active: very intense exercise daily, or physical job
             return this.Calories = Math.floor(bmr * 1.9);
         default: // case 0 - Basal Metabolic Rate (BMR)
             return this.Calories = Math.floor(bmr);
         /*
         Exercise: 15-30 minutes of elevated heart rate activity.
         Intense exercise: 45-120 minutes of elevated heart rate activity.
         Very intense exercise: 2+ hours of elevated heart rate activity.
         +- 500 cal ~= +- 0.5 kg per week
         max 1 kg per week
         src: https://www.calculator.net/calorie-calculator.html
         */
     }

Example of use

Fill in the blanks

Choose the right product

Look at the total calories

Credits

Authors :
• Miłosz Stolarczyk
• Julia Nasiadka
• Patrycja Czerniakiewicz
• Maciej Szymczyk
• Filip Wanat
• Wojciech Boman