Adding

2026-04-07 14:21:04 -05:00
parent e37826fe30
commit 75ea216a17
264 changed files with 15920 additions and 0 deletions
@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace LCU.Library.Internal.LoanRateModels.Responses.Validation.RateSheetValidations;
+public static class RateSheetValidation
+{
+    public static RateSheetValidationItem IsWithinTrendRange(decimal oldValue, decimal newValue, List<decimal> history)
+    {
+        var validation = new RateSheetValidationItem
+        {
+            Label = "Within Trend Range",
+            Description = "If there is a history of change, is the current trend within the trend history's max and min values.",
+            RateSheetValidationType = RateSheetValidationTypes.IsWithinTrendRange
+        };
+        
+        if (newValue == 0 || oldValue == 0)
+        {
+            validation.Pass = false;
+            validation.Message = $"Values cannot be zero. OldValue: {oldValue} | NewValue: {newValue}";
+            return validation;
+        }
+
+        var currentTrend = oldValue / newValue;
+        var trends = history.Zip(history.Skip(1), (x, y) => y / x).ToList();
+
+        var currentTrendString = Math.Round(currentTrend * 100, 2).ToString("0.##");
+        var minTrendString = Math.Round(trends.Min() * 100, 2).ToString("0.##");
+        var maxTrendString = Math.Round(trends.Max() * 100, 2).ToString("0.##");
+
+        validation.Value = currentTrendString;
+        validation.Formula = trends.Count == 0
+                                ? "No history found"
+                                : $"{currentTrendString} >= {minTrendString} && {currentTrendString} <= {maxTrendString}";
+        validation.Criteria = trends.Count == 0
+                                ? "No history found"
+                                : $"{minTrendString}% - {maxTrendString}%";
+        validation.Pass = trends.Count == 0 || currentTrend >= trends.Min() && currentTrend <= trends.Max();
+        return validation;
+    }
+
+    public static RateSheetValidationItem IsWithinRange(decimal value, decimal min, decimal max)
+        => new()
+        {
+            Label = "Within Range",
+            Description = "Value is within the min and max values.",
+            Value = value.ToString("0.##"),
+            Formula = $"{value:0.##} >= {min:0.##} && {value:0.##} <= {max:0.##}",
+            Criteria = $"{min:0.##} - {max:0.##}",
+            Pass = value >= min && value <= max,
+            RateSheetValidationType = RateSheetValidationTypes.IsWithinRange
+        };
+}
@@ -0,0 +1,5 @@
+namespace LCU.Library.Internal.LoanRateModels.Responses.Validation.RateSheetValidations;
+public class RateSheetValidationItem : ValidationItem
+{
+    public RateSheetValidationTypes RateSheetValidationType { get; set; }
+}
@@ -0,0 +1,8 @@
+using System.Collections.Generic;
+using LCU.Library.Internal.LoanRateModels.Entities;
+
+namespace LCU.Library.Internal.LoanRateModels.Responses.Validation.RateSheetValidations;
+public class RateSheetValidationResult : ValidationResult<Rate, RateSheetValidationItem>
+{
+    public override List<RateSheetValidationItem> Validations { get; set; }
+}
@@ -0,0 +1,6 @@
+namespace LCU.Library.Internal.LoanRateModels.Responses.Validation.RateSheetValidations;
+public enum RateSheetValidationTypes
+{
+    IsWithinTrendRange,
+    IsWithinRange
+}
@@ -0,0 +1,11 @@
+namespace LCU.Library.Internal.LoanRateModels.Responses.Validation;
+public class ValidationItem
+{
+    public string Label { get; set; } = string.Empty;
+    public string Value { get; set; } = string.Empty;
+    public string Description { get; set; } = string.Empty;
+    public string Criteria { get; set; } = string.Empty;
+    public string Formula { get; set; } = string.Empty;
+    public string Message { get; set; } = string.Empty;
+    public bool Pass { get; set; }
+}
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace LCU.Library.Internal.LoanRateModels.Responses.Validation;
+public class ValidationResult<TEntity, TValidationItem> where TValidationItem : ValidationItem
+{
+    public TEntity NewItem { get; set; }
+    public TEntity? OriginalItem { get; set; }
+    public virtual List<TValidationItem> Validations { get; set; }
+    public string Message { get; set; } = string.Empty;
+    public bool Pass { get; set; } = true;
+    
+    public List<string> ValidationMessages => Validations.Where(x => !string.IsNullOrWhiteSpace(x.Message))
+                                                         .Select(x => x.Message).ToList();
+    public List<TValidationItem> PassedValidations => Validations.Where(x => x.Pass).ToList();
+    public List<TValidationItem> FailedValidations => Validations.Where(x => !x.Pass).ToList();
+    public double Percentage => Math.Round(((double)PassedValidations.Count / Validations.Count) * 100, 2);
+
+    public bool CheckValidation()
+    {
+        Pass = Validations.Count == 0 || Validations.All(x => x.Pass);
+        return Pass;
+    }
+}