/// <summary>
/// Finds a random recipe in the available recipe pool
/// </summary>
/// <returns></returns>
RecipeNode Fish()
{
RecipeNode recipeNode;
if (pantryIngredients == null) //No pantry, fish through Recipe index
{
int rnd;
var tag = (AllowedTags == null) ? random.Next(RecipeTag.NUM_TAGS) : AllowedTags[random.Next(AllowedTags.Length)].Value;
var recipesByTag = db.FindRecipesByTag(tag);
if (recipesByTag == null || recipesByTag.Length == 0) //Nothing in that tag
{
return(Fish());
}
rnd = random.Next(recipesByTag.Length);
recipeNode = recipesByTag[rnd];
}
else //Fish through random pantry ingredient
{
var rndIng = random.Next(pantryIngredients.Length);
var ingNode = pantryIngredients[rndIng];
RecipeNode[] recipes;
if (AllowedTags != null && AllowedTags.Length > 0)
{
if ((AllowedTags & ingNode.AvailableTags) == 0) //Does this ingredient have any allowed tags?
{
return(Fish()); //No - Find something else
}
//Pick random tag from allowed tags (since this set is smaller, better to guess an available tag)
while (true)
{
var t = random.Next(AllowedTags.Length); //NOTE: Next will NEVER return MaxValue, so we don't subtract 1 from Length!
var rndTag = AllowedTags[t];
recipes = ingNode.RecipesByTag[rndTag.Value] as RecipeNode[];
if (recipes != null)
{
break;
}
}
}
else //Just pick a random available tag
{
var rndTag = random.Next(ingNode.AvailableTags.Length);
var tag = ingNode.AvailableTags[rndTag];
recipes = ingNode.RecipesByTag[tag.Value] as RecipeNode[];
}
var rndRecipe = random.Next(recipes.Length);
recipeNode = recipes[rndRecipe];
}
//If there's a blacklist, make sure no ingredients are blacklisted otherwise try again
if (this.ingBlacklist != null)
{
var ingredients = (IngredientUsage[])recipeNode.Ingredients;
for (var i = 0; i < ingredients.Length; i++)
{
if (this.ingBlacklist.Contains(ingredients[i].Ingredient))
{
return(Fish());
}
}
}
//Discard if this recipe is to be avoided
if (profile.AvoidRecipe.HasValue && profile.AvoidRecipe.Value.Equals(recipeNode.RecipeId))
{
return(Fish());
}
return(recipeNode);
}
