private static double GetCalorieTotalForPeriod(IEnumerable <FoodItem> foods, DateTime dateStart, DateTime dateEnd, MealTypeOption mealType = MealTypeOption.All)
{
double total = 0;
IEnumerable <FoodItem> results;
switch (mealType)
{
case MealTypeOption.Breakfast:
results = foods.Where(
food =>
food.MealType == mealType &&
food.DateCreated >= dateStart &&
food.DateCreated < dateEnd);
break;
case MealTypeOption.Lunch:
results = foods.Where(
food =>
food.MealType == MealTypeOption.Lunch &&
food.DateCreated >= dateStart &&
food.DateCreated < dateEnd);
break;
case MealTypeOption.Dinner:
results = foods.Where(
food =>
food.MealType == MealTypeOption.Dinner &&
food.DateCreated >= dateStart &&
food.DateCreated < dateEnd);
break;
default:
results = foods.Where(
food =>
food.DateCreated >= dateStart &&
food.DateCreated < dateEnd);
break;
}
foreach (var foodItem in results)
{
total += foodItem.Calories;
}
return(total);
}
public async Task <IEnumerable <DietChartModel> > GetWeeklyCaloriesDataPointsAsync(IEnumerable <FoodItem> foods, int numberOfDays = 7,
MealTypeOption mealOption = MealTypeOption.All)
{
var weeklyCaloriesDataPoints = new List <DietChartModel>();
var now = DateTime.Now;
// TODO: Change Hard Coded Sample Today's Date from 6 * 7 (six weeks * 7 DaysPer Week) to its Default
// The data is calculated backwords it will get 6 weeks worth of data upto current week.
var today = DateTime.SpecifyKind(new DateTime(now.Year, now.Month, now.Day, 0, 0, 0), DateTimeKind.Utc);
// Debug.WriteLine("Todays Date : {0}", today.ToString("ddd MMM dd"));
// Debug.WriteLine("Number of Days to go back = {0}", numberOfDays);
int delta = CultureInfo.CurrentCulture.DateTimeFormat.FirstDayOfWeek - today.DayOfWeek;
if (delta > 0)
{
delta -= 7;
}
var past = today.AddDays(-1.0 * numberOfDays);
// Debug.WriteLine("Past: {0}", past.ToString("ddd dd MMM"));
var enumerableFoods = foods as IList <FoodItem> ?? foods.ToList();
Debug.WriteLine("Food Count: {0}", enumerableFoods.Count);
double dayTotal = 0;
for (DateTime date = past; date <= today; date = date.AddDays(1.0))
{
dayTotal = GetCalorieTotalForDay(enumerableFoods, date);
Debug.WriteLine("Date: {0} Total = {1}", date.ToString("ddd dd MMM"), dayTotal);
weeklyCaloriesDataPoints.Add(new DietChartModel()
{
Name = date.ToString("ddd"),
Value = dayTotal,
Size = dayTotal > 0 ? 1800 : 0
});
}
foreach (var item in weeklyCaloriesDataPoints)
{
Debug.WriteLine("Weekly Datapoint: {0} : {1}", item.Name, item.Value);
}
// weekTotal = GetCalorieTotalForDay(enumerableFoods, today);
// Debug.WriteLine("Total = {0}", weekTotal);
return(weeklyCaloriesDataPoints);
}
public Task <IEnumerable <IGrouping <string, CategoryFoodDataPoint> > > GetCategoryFoodDataPointsAsync(IEnumerable <FoodItem> foods, int numberOfWeeks = 6,
MealTypeOption mealOption = MealTypeOption.All)
{
throw new NotImplementedException();
}
