feat(core): full database soft-delete, live sidebar counts and robust subtask undo/restore across all modes

src/app/api/tasks/route.ts

@@ -12,19 +12,52 @@ export async function GET(req: NextRequest) {
     const listId = searchParams.get("listId");
     const showCompleted = searchParams.get("showCompleted") === "true";
     const tagName = searchParams.get("tag");
+    const isTrash = searchParams.get("isTrash") === "true";
+    const countTrash = searchParams.get("countTrash") === "true";
+
+    if (countTrash) {
+      const trashCount = await prisma.task.count({
+        where: { userId: session.user.id, isDeleted: true } as any,
+      });
+      return NextResponse.json({ count: trashCount });
+    }
+
+    if (isTrash) {
+      // Return all deleted tasks (top-level or subtasks)
+      const trashTasks = await prisma.task.findMany({
+        where: { userId: session.user.id, isDeleted: true } as any,
+        orderBy: [{ deletedAt: "desc" } as any, { createdAt: "desc" }],
+        include: {
+          children: {
+            orderBy: [{ sortOrder: "asc" }],
+            include: { tags: { include: { tag: true } } },
+          },
+          tags: { include: { tag: true } },
+        },
+      });
+      return NextResponse.json(trashTasks);
+    }
 
     const where: Record<string, unknown> = {
       userId: session.user.id,
+      isDeleted: false,
       ...(listId ? { listId, parentId: null } : tagName ? {} : { parentId: null }),
       ...(showCompleted ? {} : { completed: false }),
       ...(tagName ? { tags: { some: { tag: { name: tagName } } } } : {}),
     };
 
     const tasks = await prisma.task.findMany({
-      where,
+      where: where as any,
       orderBy: [{ sortOrder: "asc" }, { createdAt: "asc" }],
       include: {
-        children: { orderBy: [{ sortOrder: "asc" }] },
+        children: {
+          where: { isDeleted: false } as any,
+          orderBy: [{ sortOrder: "asc" }],
+          include: {
+            children: { where: { isDeleted: false } as any, orderBy: [{ sortOrder: "asc" }] },
+            tags: { include: { tag: true } },
+          },
+        },
         tags: { include: { tag: true } },
       },
     });
@@ -35,6 +68,29 @@ export async function GET(req: NextRequest) {
   }
 }
 
+export async function DELETE(req: NextRequest) {
+  try {
+    const session = await getServerSession(authOptions);
+    if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+
+    const { searchParams } = new URL(req.url);
+    const trash = searchParams.get("trash") === "true";
+
+    if (trash) {
+      // Empty all trash permanently
+      await prisma.task.deleteMany({
+        where: { userId: session.user.id, isDeleted: true } as any,
+      });
+      return NextResponse.json({ ok: true });
+    }
+
+    return NextResponse.json({ error: "Invalid delete request" }, { status: 400 });
+  } catch (err) {
+    console.error("[tasks:DELETE_BATCH]", err);
+    return NextResponse.json({ error: "Failed to empty trash" }, { status: 500 });
+  }
+}
+
 export async function POST(req: NextRequest) {
   try {
     const session = await getServerSession(authOptions);