private void Mutate(Individual child)
{
var rnd = new Random();
var mutation = rnd.Next(0, child.Genes.Length);
using (var db = new DietDbContext())
{
var totalDataSet = db.FoodItems.Count();
//todo: enhance per category e.g. breakfast, snack, lunch, supper
var id = rnd.Next(1, totalDataSet);
var recipe = db.FoodItems.Find(id);
if (recipe == null)
{
Console.WriteLine("Recipe null");
}
// if we haven't used this variation already, add it to the set
if (!child.Genes.Any(g => string.Equals(g.Name, recipe.Name, StringComparison.OrdinalIgnoreCase)))
{
child.Genes[mutation].Name = recipe.Name;
child.Genes[mutation].Fitness = recipe.CalcTotalFitness();
//Console.WriteLine("Mutation Occurred. Individual added to population");
return;
}
// we have used it, try another variation
Mutate(child);
}
}
public static Population GetRecipes()
{
var rnd = new Random();
var mealPop = new Population();
using (var db = new DietDbContext())
{
var totalDataSet = db.FoodItems.Count();
for (var j = 1; j < 11; j++)
{
var mealIndividual = new Individual();
var i = 0;
while (i < mealIndividual.Genes.Length)
{
//todo: add categorisation for breakfast, snack, lunch, supper
int id = rnd.Next(1, totalDataSet);
var recipe = db.FoodItems.Find(id);
if (recipe == null)
{
Console.WriteLine("Recipe null");
}
if (mealIndividual.Genes.Any(g => string.Equals(g.Name, recipe.Name, StringComparison.OrdinalIgnoreCase)))
{
continue;
}
mealIndividual.Genes[i].Name = recipe.Name;
mealIndividual.Genes[i].Fitness = recipe.CalcTotalFitness();
i++;
}
//todo: enhance meal set per category e.g. breakfast, snack, lunch, supper
mealPop.AddIndividual(mealIndividual);
Console.WriteLine("Meal set {0} added", j);
}
};
Console.WriteLine("Population has been filled.");
return(mealPop);
}
static async Task AddRecipes(string search)
{
var yummlyService = new YummlyService();
var recipes = await yummlyService.SearchRecipes(search);
using (var db = new DietDbContext())
{
foreach (var item in recipes.Matches)
{
// check if in database
if (db.FoodItems.Any(x => x.RecipeId == item.Id))
{
continue;
}
var recipe = await yummlyService.GetRecipe(item.Id);
var foodItem = new FoodItem
{
Name = item.RecipeName,
RecipeId = recipe.Id,
RawData = JsonConvert.SerializeObject(recipe),
Ingredients = JsonConvert.SerializeObject(item.Ingredients)
};
// save required nutrient values
var fatKCal = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("FAT_KCAL", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (fatKCal != null)
{
foodItem.FAT_KCAL = fatKCal.Value;
}
var enerKCal = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("ENERC_KCAL", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (enerKCal != null)
{
foodItem.ENERC_KCAL = enerKCal.Value;
}
var prot = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("PROCNT", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (prot != null)
{
foodItem.PROCNT = prot.Value;
}
var chol = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("CHOLE", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (chol != null)
{
foodItem.CHOLE = chol.Value;
}
var tCarb = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("CHOCDF", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (tCarb != null)
{
foodItem.CHOCDF = tCarb.Value;
}
var sugar = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("SUGAR", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (sugar != null)
{
foodItem.SUGAR = sugar.Value;
}
var fibre = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("FIBTG", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (fibre != null)
{
foodItem.FIBTG = fibre.Value;
}
var tFat = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("FAT", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (fatKCal != null)
{
foodItem.FAT = tFat.Value;
}
var satFat = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("FASAT", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (satFat != null)
{
foodItem.FASAT = satFat.Value;
}
var traFat = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("FATRN", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (traFat != null)
{
foodItem.FATRN = traFat.Value;
}
var water = recipe.NutritionEstimates
.FirstOrDefault(x => string.Equals("WATER", x.Attribute, StringComparison.OrdinalIgnoreCase));
if (water != null)
{
foodItem.WATER = water.Value;
}
await db.AddAsync(foodItem);
Console.WriteLine(item.RecipeName);
}
await db.SaveChangesAsync();
}
Console.WriteLine("Done");
Console.ReadKey();
}