Phase 11A PlotDirector Character Age and Story Date Management feature.

PlotLine/Services/CharacterAgeDisplayService.cs

@@ -0,0 +1,109 @@
+using PlotLine.Models;
+
+namespace PlotLine.Services;
+
+public sealed class CharacterAgeDisplayResult
+{
+    public bool HasExactAge { get; init; }
+    public string? Label { get; init; }
+    public string? DisplayText { get; init; }
+}
+
+public static class CharacterAgeDisplayService
+{
+    public static CharacterAgeDisplayResult GetAgeForScene(SceneCharacter character, string? sceneTimeModeName, DateTime? sceneStartDateTime)
+    {
+        var effectiveDate = ResolveEffectiveSceneDate(sceneTimeModeName, sceneStartDateTime);
+        if (character.BirthDate.HasValue && effectiveDate.HasValue)
+        {
+            return new CharacterAgeDisplayResult
+            {
+                HasExactAge = true,
+                Label = "Age in scene",
+                DisplayText = FormatExactAge(character.BirthDate.Value.Date, effectiveDate.Value.Date)
+            };
+        }
+
+        if (character.AgeAtSeriesStart.HasValue)
+        {
+            return new CharacterAgeDisplayResult
+            {
+                Label = "Approximate age",
+                DisplayText = $"About {character.AgeAtSeriesStart.Value}"
+            };
+        }
+
+        return new CharacterAgeDisplayResult();
+    }
+
+    public static CharacterAgeDisplayResult GetAgeForScene(Character character, string? sceneTimeModeName, DateTime? sceneStartDateTime)
+    {
+        var effectiveDate = ResolveEffectiveSceneDate(sceneTimeModeName, sceneStartDateTime);
+        if (character.BirthDate.HasValue && effectiveDate.HasValue)
+        {
+            return new CharacterAgeDisplayResult
+            {
+                HasExactAge = true,
+                Label = "Age in scene",
+                DisplayText = FormatExactAge(character.BirthDate.Value.Date, effectiveDate.Value.Date)
+            };
+        }
+
+        if (character.AgeAtSeriesStart.HasValue)
+        {
+            return new CharacterAgeDisplayResult
+            {
+                Label = "Approximate age",
+                DisplayText = $"About {character.AgeAtSeriesStart.Value}"
+            };
+        }
+
+        return new CharacterAgeDisplayResult();
+    }
+
+    public static DateTime? ResolveEffectiveSceneDate(string? timeModeName, DateTime? startDateTime)
+    {
+        if (!startDateTime.HasValue)
+        {
+            return null;
+        }
+
+        return string.Equals(timeModeName, "Exact Date", StringComparison.OrdinalIgnoreCase)
+            || string.Equals(timeModeName, "Exact DateTime", StringComparison.OrdinalIgnoreCase)
+            || string.Equals(timeModeName, "Exact Date and Time", StringComparison.OrdinalIgnoreCase)
+                ? startDateTime.Value.Date
+                : null;
+    }
+
+    public static string FormatExactAge(DateTime birthDate, DateTime sceneDate)
+    {
+        var years = sceneDate.Year - birthDate.Year;
+        if (sceneDate < birthDate.AddYears(years))
+        {
+            years--;
+        }
+
+        if (years < 0)
+        {
+            years = 0;
+        }
+
+        var lastBirthday = birthDate.AddYears(years);
+        var months = ((sceneDate.Year - lastBirthday.Year) * 12) + sceneDate.Month - lastBirthday.Month;
+        if (sceneDate.Day < lastBirthday.Day)
+        {
+            months--;
+        }
+
+        if (months < 0)
+        {
+            months = 0;
+        }
+
+        return months == 0
+            ? $"{years} year{Pluralise(years)}"
+            : $"{years} year{Pluralise(years)}, {months} month{Pluralise(months)}";
+    }
+
+    private static string Pluralise(int value) => value == 1 ? string.Empty : "s";
+}

PlotLine/Services/CoreServices.cs

@@ -1001,6 +1001,7 @@ public sealed class SceneService(
             SceneNumber = existing.Count + 1,
             RevisionStatusID = ChapterService.DefaultRevisionStatusId(lookupData),
             TimeModeID = lookupData.TimeModes.FirstOrDefault(x => x.TimeModeName == "Unknown")?.TimeModeID ?? lookupData.TimeModes.First().TimeModeID,
+            TimeModeName = lookupData.TimeModes.FirstOrDefault(x => x.TimeModeName == "Unknown")?.TimeModeName ?? lookupData.TimeModes.First().TimeModeName,
             TimeConfidenceID = lookupData.TimeConfidences.FirstOrDefault(x => x.TimeConfidenceName == "Unknown")?.TimeConfidenceID ?? lookupData.TimeConfidences.First().TimeConfidenceID,
             Chapter = context.Value.Chapter,
             Book = context.Value.Book,
@@ -1031,6 +1032,7 @@ public sealed class SceneService(
             SceneTitle = scene.SceneTitle,
             Summary = scene.Summary,
             TimeModeID = scene.TimeModeID,
+            TimeModeName = scene.TimeModeName,
             StartDateTime = scene.StartDateTime,
             EndDateTime = scene.EndDateTime,
             DurationAmount = scene.DurationAmount,
@@ -5614,20 +5616,9 @@ public sealed class CharacterService(
 
     public string DisplayAge(Character character, DateTime? sceneStartDateTime = null)
     {
-        if (character.BirthDate.HasValue && sceneStartDateTime.HasValue)
+        var age = CharacterAgeDisplayService.GetAgeForScene(character, sceneStartDateTime.HasValue ? "Exact DateTime" : null, sceneStartDateTime);
-        {
-            var age = sceneStartDateTime.Value.Year - character.BirthDate.Value.Year;
-            if (sceneStartDateTime.Value.Date < character.BirthDate.Value.Date.AddYears(age))
-            {
-                age--;
-            }
 
-            return age.ToString();
+        return age.DisplayText ?? "Unknown";
-        }
-
-        return character.AgeAtSeriesStart.HasValue
-            ? $"About {character.AgeAtSeriesStart.Value}"
-            : "Unknown";
     }
 
     private static IReadOnlyList<SelectListItem> ToRelationshipTypeSelectList(IEnumerable<RelationshipType> relationshipTypes)

PlotLine/ViewModels/CoreViewModels.cs

@@ -126,6 +126,8 @@ public sealed class SceneEditViewModel
     [Display(Name = "Time mode")]
     public int TimeModeID { get; set; }
 
+    public string TimeModeName { get; set; } = string.Empty;
+
     [Display(Name = "Start date/time")]
     public DateTime? StartDateTime { get; set; }
 

PlotLine/Views/Scenes/_SceneInspector.cshtml

@@ -354,10 +354,15 @@
                 @foreach (var character in Model.SceneCharacters)
                 {
                     var editId = $"scene-character-edit-{character.SceneCharacterID}";
+                    var ageDisplay = CharacterAgeDisplayService.GetAgeForScene(character, Model.TimeModeName, Model.StartDateTime);
                     <article class="character-appearance-card">
                         <div class="character-appearance-summary">
                             <div>
                                 <strong>@character.CharacterName</strong>
+                                @if (!string.IsNullOrWhiteSpace(ageDisplay.DisplayText))
+                                {
+                                    <span class="muted">@ageDisplay.Label: @ageDisplay.DisplayText</span>
+                                }
                                 <span class="muted">@((character.RoleInSceneTypeName ?? "Role not set")) • @((character.PresenceTypeName ?? "Presence not set"))</span>
                                 <span class="muted" title="@character.LocationPath">Location: @(character.LocationName ?? "Not set")</span>
                                 <span class="muted">Entry: @(character.EntryLocationName ?? "Not set")</span>

PlotLine/Views/_ViewImports.cshtml

@@ -1,5 +1,6 @@
 @using PlotLine
 @using PlotLine.Models
+@using PlotLine.Services
 @using PlotLine.ViewModels
 @addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
 @addTagHelper *, PlotLine