92 lines
3.4 KiB
C#
92 lines
3.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text.Json.Nodes;
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namespace Elwig.Helpers.Billing {
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public class PaymentBillingData : BillingData {
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protected readonly Dictionary<int, Curve> Curves;
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protected readonly Dictionary<string, Curve> PaymentData;
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protected readonly Dictionary<string, Curve> QualityData;
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protected readonly IEnumerable<string> AttributeVariants;
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public PaymentBillingData(JsonObject data, IEnumerable<string> attributeVariants) :
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base(data) {
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if (attributeVariants.Any(e => e.Any(c => c < 'A' || c > 'Z')))
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throw new ArgumentException("Invalid attributeVariants");
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AttributeVariants = attributeVariants;
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Curves = GetCurves();
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PaymentData = GetPaymentData();
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QualityData = GetQualityData();
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}
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public static PaymentBillingData FromJson(string json, IEnumerable<string> attributeVariants) {
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return new(ParseJson(json), attributeVariants);
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}
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private Dictionary<string, Curve> GetData(JsonNode data) {
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return GetSelection(data, AttributeVariants).ToDictionary(e => e.Key, e => LookupCurve(e.Value));
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}
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protected Dictionary<string, Curve> GetPaymentData() {
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return GetData(GetPaymentEntry());
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}
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protected Dictionary<string, Curve> GetQualityData() {
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Dictionary<string, Curve> dict = [];
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var q = GetQualityEntry();
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if (q == null) return dict;
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foreach (var (qualid, data) in q) {
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foreach (var (idx, d) in GetData(data ?? throw new InvalidOperationException())) {
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dict[$"{qualid}/{idx}"] = d;
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}
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}
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return dict;
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}
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public decimal CalculatePrice(string sortid, string? attrid, string qualid, bool gebunden, double oe, double kmw) {
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var curve = GetQualityCurve(qualid, sortid, attrid) ?? GetCurve(sortid, attrid);
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var d = (gebunden ? curve.Gebunden : null) ?? curve.Normal;
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if (d.Count == 1) return d.First().Value;
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var r = curve.Mode == CurveMode.Oe ? oe : kmw;
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var lt = d.Keys.Where(v => v <= r);
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var gt = d.Keys.Where(v => v >= r);
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if (!lt.Any()) {
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return d[gt.Min()];
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} else if (!gt.Any()) {
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return d[lt.Max()];
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}
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var max = lt.Max();
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var min = gt.Min();
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if (max == min) return d[r];
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var p1 = ((decimal)r - (decimal)min) / ((decimal)max - (decimal)min);
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var p2 = 1 - p1;
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return d[min] * p2 + d[max] * p1;
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}
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private Curve LookupCurve(JsonValue val) {
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if (val.TryGetValue(out string? curve)) {
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var curveId = int.Parse(curve.Split(":")[1]);
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return Curves[curveId];
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} else if (val.TryGetValue(out decimal value)) {
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return new(CurveMode.Oe, new() { { 73, value } }, null);
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}
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throw new InvalidOperationException();
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}
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protected Curve GetCurve(string sortid, string? attrid) {
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return PaymentData[$"{sortid}{attrid ?? ""}"];
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}
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protected Curve? GetQualityCurve(string qualid, string sortid, string? attrid) {
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return QualityData.TryGetValue($"{qualid}/{sortid}{attrid ?? ""}", out var curve) ? curve : null;
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}
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}
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}
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