import { auth } from "@/app/(auth)/auth";
import { getChatById, getPendingVideoMessagesByChatId } from "@/lib/db/queries";

export const dynamic = "force-dynamic";
export const revalidate = 0;

export async function GET(request: Request) {
  try {
    const session = await auth();
    if (!session?.user?.id) {
      return new Response(JSON.stringify({ error: "Unauthorized" }), {
        status: 401,
        headers: { "Content-Type": "application/json" },
      });
    }

    const { searchParams } = new URL(request.url);
    const chatId = searchParams.get("chatId");
    if (!chatId) {
      return new Response(JSON.stringify({ error: "Missing chatId" }), {
        status: 400,
        headers: { "Content-Type": "application/json" },
      });
    }

    const selectedChat = await getChatById({ id: chatId });
    if (!selectedChat || selectedChat.userId !== session.user.id) {
      return new Response(JSON.stringify({ error: "Forbidden" }), {
        status: 403,
        headers: { "Content-Type": "application/json" },
      });
    }

    const pendingMessages = await getPendingVideoMessagesByChatId({ chatId });
    const tasks = pendingMessages.map((msg) => {
      const metadata = (msg.videoMetadata as Record<string, any>) || {};
      return {
        messageId: msg.id,
        taskId: typeof metadata.taskId === "string" ? metadata.taskId : null,
        provider:
          typeof metadata.provider === "string" ? metadata.provider : null,
        model: typeof metadata.model === "string" ? metadata.model : null,
        mode: typeof metadata.mode === "string" ? metadata.mode : null,
        status:
          typeof metadata.status === "string" ? metadata.status : "queued",
        startedAt: metadata.startedAt ?? null,
        updatedAt: metadata.updatedAt ?? null,
      };
    });

    return new Response(
      JSON.stringify({
        chatId,
        count: tasks.length,
        tasks,
      }),
      {
        status: 200,
        headers: {
          "Content-Type": "application/json",
          "Cache-Control": "no-store, max-age=0",
        },
      }
    );
  } catch (error) {
    console.error("[Video Tasks API] GET error:", error);
    return new Response(JSON.stringify({ error: "Internal server error" }), {
      status: 500,
      headers: { "Content-Type": "application/json" },
    });
  }
}