Merge nucleic/warm-north-vole-pf37 into dev

2026-08-04 03:10:06 -07:00
parent f5ee895d3f
commit 817eeff081
6 changed files with 473 additions and 16 deletions
@@ -0,0 +1,105 @@
+using System.ComponentModel;
+using System.Text.Json;
+using NucleicApp.Services;
+
+namespace NucleicApp.ViewModels;
+
+/// Presentation state for the first WinUI Home screen. It derives every value from
+/// ``RendererStore`` projections; it never mutates host-owned state.
+public sealed class HomeViewModel : ViewModelBase, IDisposable
+{
+    private readonly RendererStore store;
+    private readonly Func<DateTimeOffset> now;
+
+    public HomeViewModel(RendererStore store, Func<DateTimeOffset>? now = null)
+    {
+        this.store = store;
+        this.now = now ?? (() => DateTimeOffset.Now);
+        store.PropertyChanged += StoreChanged;
+    }
+
+    public string Greeting => now().Hour switch
+    {
+        >= 5 and < 12 => "Good morning",
+        >= 12 and < 17 => "Good afternoon",
+        >= 17 and < 22 => "Good evening",
+        _ => "Hello",
+    };
+
+    public DashboardCounts Counts
+    {
+        get
+        {
+            if (store.Dashboard is not { } dashboard ||
+                !dashboard.TryGetProperty("counts", out var counts)) return new();
+            return new DashboardCounts(
+                Int(counts, "projects"), Int(counts, "activeChats"),
+                Int(counts, "chats"), Int(counts, "messages"), Long(counts, "tokens"));
+        }
+    }
+
+    public string Subtitle => Counts.Chats == 0
+        ? "Start a chat below to get going."
+        : $"{Counts.ActiveChats} active of {Counts.Chats} chats · {Counts.Projects} "
+            + (Counts.Projects == 1 ? "project" : "projects");
+
+    public IReadOnlyList<SessionSummary> LiveSessions => store.Sessions
+        .Where(session => !Bool(session.Raw, "archived"))
+        .OrderByDescending(UpdatedAt)
+        .ToArray();
+
+    public IReadOnlyList<SessionSummary> NeedsAttention => LiveSessions
+        .Where(session => session.PendingApprovalCount > 0 || session.Status == "awaitingApproval" ||
+            (session.Status == "awaitingInput" && String(session.Raw, "disposition") == "awaitingInput"))
+        .ToArray();
+
+    public IReadOnlyList<SessionSummary> InProgress => LiveSessions
+        .Where(session => session.Status is "provisioning" or "running")
+        .ToArray();
+
+    public int OpenTodoCount
+    {
+        get
+        {
+            if (store.Dashboard is not { } dashboard ||
+                !dashboard.TryGetProperty("todos", out var todos) ||
+                todos.ValueKind != JsonValueKind.Array) return 0;
+            return todos.EnumerateArray().Count(todo => String(todo, "status") != "done");
+        }
+    }
+
+    private void StoreChanged(object? sender, PropertyChangedEventArgs args)
+    {
+        if (args.PropertyName == nameof(RendererStore.Sessions))
+        {
+            Raise(nameof(LiveSessions));
+            Raise(nameof(NeedsAttention));
+            Raise(nameof(InProgress));
+        }
+        else if (args.PropertyName == nameof(RendererStore.Dashboard))
+        {
+            Raise(nameof(Counts));
+            Raise(nameof(Subtitle));
+            Raise(nameof(OpenTodoCount));
+        }
+    }
+
+    private static bool Bool(JsonElement root, string name) =>
+        root.TryGetProperty(name, out var value) && value.ValueKind == JsonValueKind.True;
+    private static string? String(JsonElement root, string name) =>
+        root.TryGetProperty(name, out var value) && value.ValueKind == JsonValueKind.String
+            ? value.GetString() : null;
+    private static int Int(JsonElement root, string name) =>
+        root.TryGetProperty(name, out var value) && value.TryGetInt32(out var result) ? result : 0;
+    private static long Long(JsonElement root, string name) =>
+        root.TryGetProperty(name, out var value) && value.TryGetInt64(out var result) ? result : 0;
+    private static double UpdatedAt(SessionSummary session) =>
+        session.Raw.TryGetProperty("updatedAt", out var value) && value.TryGetDouble(out var result)
+            ? result : 0;
+
+    public void Dispose() => store.PropertyChanged -= StoreChanged;
+}
+
+public sealed record DashboardCounts(
+    int Projects = 0, int ActiveChats = 0, int Chats = 0,
+    int Messages = 0, long Tokens = 0);