/// <summary>
/// Method to search for more recipes asynchronously
/// </summary>
private async void SearchForMoreRecipesAsync()
{
// Show refreshing symbol
RecipeListView.IsRefreshing = true;
// Get the data
var result = await App.MasterController.EdamamApiHelper.QueryAsync(RecipeFilterText.Trim(), edamamResponse.From + 10, edamamResponse.To + 10);
edamamResponse = result;
// Populate the list view
RecipeListView.IsRefreshing = false;
result.Hits.ForEach(hit => Recipes.Add(hit.Recipe));
}
/// <summary>
/// Method to search for recipes asynchronously
/// </summary>
private async void SearchForRecipeAsync()
{
// Clear the list view and display refreshing symbol
Recipes.Clear();
RecipeListView.IsRefreshing = true;
// Get the data
var result = await App.MasterController.EdamamApiHelper.QueryAsync(RecipeFilterText.Trim());
edamamResponse = result;
// Populate the list view
RecipeListView.IsRefreshing = false;
result.Hits.ForEach(hit => Recipes.Add(hit.Recipe));
}
/// <summary>
/// Method to query the api using the given url
/// </summary>
/// <param name="url"></param>
/// <returns></returns>
private async Task <EdamamResponse> QueryUrlAsync(string url)
{
try
{
// Get the json
var queryResponse = await GetStringResponse(url);
// Parse the json string to an object
var content = EdamamResponse.FromJson(queryResponse);
SanitiseEdamamResponse(content);
// Return the response object
return(content);
}
catch (Exception e)
{
App.Log.Error("EdamamQueryUrlAsync", "Could not query url " + url + "\n" + e.StackTrace + "\n" + e.Message);
return(null);
}
}
/// <summary>
/// Method to parse ingredients in the EdamamResponse given pulling the quantity, measurement and food items out of the concatenated text part.
/// </summary>
/// <param name="response"></param>
private void SanitiseEdamamResponse(EdamamResponse response)
{
try
{
foreach (var hit in response.Hits)
{
foreach (var ing in hit.Recipe.Ingredients)
{
// Attempt to populate the data fields from the text if they have not been populated by the API
// Skip this iteration if they have been populated
if (ing.Food != null || ing.Measure != null || ing.Quantity != 0.0)
{
continue;
}
// First we want to remove any text within brackets
var text = ing.Text;
if (text.Any(c => c == '(') && text.Any(c => c == ')'))
{
// Find start bracket
var start = text.IndexOf('(');
var end = text.LastIndexOf(')');
// Remove any text between the brackets
text.Remove(start, end - start);
}
// Split into constituent parts
var split = text.Split(' ');
string food;
if (double.TryParse(split.First(), out var quantity))
{
var measure = split[1];
food = string.Empty;
if (split.Length == 2)
{
measure = "<unit>";
food = split[1];
}
else
{
for (var i = 2; i < split.Length; i++)
{
food += split[i] + " ";
}
}
ing.Food = food;
ing.Measure = measure;
ing.Quantity = quantity;
}
else
{
// Check for fractional first value, otherwise assume the entire string is the item text
var first = split.First().Split('/');
if (double.TryParse(first.First(), out var firstNum) &&
double.TryParse(first.Last(), out var secondNum))
{
food = "";
for (var i = 2; i < split.Length; i++)
{
food += split[i] + " ";
}
ing.Food = food;
ing.Quantity = firstNum / secondNum;
ing.Measure = split[1];
}
else
{
ing.Food = text;
ing.Measure = "grams";
ing.Quantity = Math.Round(ing.Weight, 0);
ing.Quantity = ing.Weight;
}
}
}
}
}
catch (Exception ex)
{
App.Log.Error("SanitiseEdamamResponse", ex.Message + "\n" + ex.StackTrace);
}
}