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BillingData: Add GetCurveValueAt(), extracted from PaymentBillingData

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This commit is contained in:
Lorenz Stechauner
2024-01-20 02:33:05 +01:00
parent bf90543ad8
commit ecbc9c2d82
2 changed files with 27 additions and 21 deletions
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28
Elwig/Helpers/Billing/BillingData.cs
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@ -124,6 +124,7 @@ namespace Elwig.Helpers.Billing {
var obj = c?.AsObject() ?? throw new InvalidOperationException();
var id = obj["id"]?.GetValue<int>() ?? throw new InvalidOperationException();
var cMode = (obj["mode"]?.GetValue<string>() == "kmw") ? CurveMode.Kmw : CurveMode.Oe;
double quw = cMode == CurveMode.Oe ? 73 : 15;
Dictionary<double, decimal> c1;
Dictionary<double, decimal>? c2 = null;
@ -131,7 +132,7 @@ namespace Elwig.Helpers.Billing {
if (norm is JsonObject) {
c1 = GetCurveData(norm.AsObject(), cMode);
} else if (norm?.AsValue().TryGetValue(out decimal v) == true) {
c1 = new() { { cMode == CurveMode.Oe ? 73 : 15, v } };
c1 = new() { { quw, v } };
} else {
throw new InvalidOperationException();
}
@ -139,7 +140,10 @@ namespace Elwig.Helpers.Billing {
if (geb is JsonObject) {
c2 = GetCurveData(geb.AsObject(), cMode);
} else if (geb?.AsValue().TryGetValue(out decimal v) == true) {
c2 = c1.ToDictionary(e => e.Key, e => e.Value + v);
var splitVal = GetCurveValueAt(c1, quw);
c2 = c1.ToDictionary(e => e.Key, e => e.Value + (e.Key >= quw ? v : 0));
c2[quw] = splitVal + v;
c2[Math.BitDecrement(quw)] = splitVal;
}
dict.Add(id, new(cMode, c1, c2));
}
@ -181,5 +185,25 @@ namespace Elwig.Helpers.Billing {
return dict;
}
public static decimal GetCurveValueAt(Dictionary<double, decimal> curve, double key) {
if (curve.Count == 1) return curve.First().Value;
var lt = curve.Keys.Where(v => v <= key);
var gt = curve.Keys.Where(v => v >= key);
if (!lt.Any()) {
return curve[gt.Min()];
} else if (!gt.Any()) {
return curve[lt.Max()];
}
var max = lt.Max();
var min = gt.Min();
if (max == min) return curve[key];
var p1 = ((decimal)key - (decimal)min) / ((decimal)max - (decimal)min);
var p2 = 1 - p1;
return curve[min] * p2 + curve[max] * p1;
}
}
}

20
Elwig/Helpers/Billing/PaymentBillingData.cs
View File

@ -49,25 +49,7 @@ namespace Elwig.Helpers.Billing {
public decimal CalculatePrice(string sortid, string? attrid, string qualid, bool gebunden, double oe, double kmw) {
var curve = GetQualityCurve(qualid, sortid, attrid) ?? GetCurve(sortid, attrid);
var d = (gebunden ? curve.Gebunden : null) ?? curve.Normal;
if (d.Count == 1) return d.First().Value;
var r = curve.Mode == CurveMode.Oe ? oe : kmw;
var lt = d.Keys.Where(v => v <= r);
var gt = d.Keys.Where(v => v >= r);
if (!lt.Any()) {
return d[gt.Min()];
} else if (!gt.Any()) {
return d[lt.Max()];
}
var max = lt.Max();
var min = gt.Min();
if (max == min) return d[r];
var p1 = ((decimal)r - (decimal)min) / ((decimal)max - (decimal)min);
var p2 = 1 - p1;
return d[min] * p2 + d[max] * p1;
return GetCurveValueAt((gebunden ? curve.Gebunden : null) ?? curve.Normal, curve.Mode == CurveMode.Oe ? oe : kmw);
}
private Curve LookupCurve(JsonValue val) {