public DateTime CalculateLowerCutoffTime(Goal goal, decimal oldCurrentLevel, DateTime previousDoneItTime)
{
var hourdecr = GoalProcessor.GetHourlyDecreaseRate(goal);
var lowerCutoff = goal.GetLowerCutoff();
var hours = (oldCurrentLevel - lowerCutoff) / hourdecr;
return previousDoneItTime.AddHours(Math.Abs(Convert.ToDouble(hours)));
}
public GoalViewModel ProcessGoal(Goal goal)
{
var vm = new GoalViewModel();
vm.Status = GoalStatus.NotStarted;
vm.Goal = goal;
vm.Graph = new GraphViewModel();// gp.ProcessGraph(goal);
//var timeFirstPoint = GraphProcessor.GetDateOfLastOrFirstGraphPoint(true, goal, _now);
decimal currentLevel = 0;
DateTime? previousDoneItTime = null;
decimal perHour = GetHourlyDecreaseRate(goal);
var cutoffLevel = goal.GetLowerCutoff();
if (goal.DoneIts.Count > 0)
{
decimal oldCurrentLevel=0;
foreach (var done in goal.DoneIts.OrderBy(d => d.Date))
{
oldCurrentLevel = currentLevel;
if (previousDoneItTime == null)
{
// First doneit starts counting
currentLevel = done.Amount;
vm.Graph.AddPoint(done, oldCurrentLevel, currentLevel);
}
else
{
// Calculate current level
var dif = (done.Date - (DateTime)previousDoneItTime).TotalHours;
oldCurrentLevel = currentLevel - (perHour * Convert.ToDecimal(dif));
if (oldCurrentLevel < cutoffLevel)
{
// Add extra point at lower threshold
var cutoffTime = CalculateLowerCutoffTime(goal, currentLevel, previousDoneItTime.Value);
vm.Graph.Points.Add(new GraphPoint { Time = cutoffTime, Amount = 0, y = cutoffLevel });
oldCurrentLevel = cutoffLevel;
}
currentLevel = oldCurrentLevel + done.Amount;
vm.Graph.AddPoint(done, oldCurrentLevel, currentLevel);
}
previousDoneItTime = done.Date;
}
// Calculate current level
var diff = (_now - (DateTime)previousDoneItTime).TotalHours;
currentLevel -= (perHour * Convert.ToDecimal(diff));
// Check for cutoff
if (currentLevel < cutoffLevel)
{
// Add extra point at lower threshold
var cutoffTime = CalculateLowerCutoffTime(goal, oldCurrentLevel, previousDoneItTime.Value);
vm.Graph.Points.Add(new GraphPoint { Time = cutoffTime, Amount = 0, y = cutoffLevel });
currentLevel = cutoffLevel;
vm.Cutoff = CutoffStatus.Active;
}
// Add current level
vm.Graph.Points.Add(new GraphPoint { Time = _now, Amount = 0, y = currentLevel });
vm.Status = currentLevel < 0 ? GoalStatus.Behind : GoalStatus.OnTrack;
vm.AtZero = TimeSpan.FromHours(Convert.ToDouble(currentLevel / perHour));
vm.CurrentLevel = currentLevel;
}
else
{
vm.Graph = GraphProcessor.CreateEmptyGraph(goal, _now);
}
var graph = vm.Graph;
var first = graph.Points.OrderBy(x => x.Time).First().Time;
var last = graph.Points.OrderBy(x => x.Time).Last().Time;
var totalSecs = ((last - first).TotalSeconds);
if (totalSecs > 0)
{
foreach (var point in graph.Points)
{
point.x = Convert.ToDecimal((point.Time - first).TotalSeconds / totalSecs);
}
}
//GraphProcessor.CalculateXPositions(out vm);
return vm;
}