first commit

app/api/team/formation/route.ts

@@ -0,0 +1,29 @@
+import { NextRequest, NextResponse } from "next/server";
+import { db } from "@/lib/db";
+import { getServerSession } from "next-auth";
+import { authOptions } from "@/lib/auth";
+import { getFormationChangeIssues, FORMATIONS } from "@/lib/teamValidation";
+
+export async function PUT(req: NextRequest) {
+  const session = await getServerSession(authOptions);
+  if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+
+  const { formation } = await req.json();
+  if (!FORMATIONS[formation]) return NextResponse.json({ error: "ترکیب نامعتبر" }, { status: 400 });
+
+  const team = await db.team.findUnique({
+    where: { userId: (session.user as any).id },
+    include: { players: { include: { player: true } } },
+  });
+  if (!team) return NextResponse.json({ error: "تیم پیدا نشد" }, { status: 404 });
+
+  const playerList = team.players.map((tp) => ({ position: tp.player.position, isBench: tp.isBench }));
+  const issues = getFormationChangeIssues(playerList, team.formation, formation);
+
+  if (issues.length > 0) {
+    return NextResponse.json({ error: issues.join(" | "), issues }, { status: 400 });
+  }
+
+  const updated = await db.team.update({ where: { id: team.id }, data: { formation } });
+  return NextResponse.json(updated);
+}