import type { APIRoute } from "astro";
import { db } from "../../../../db";
import { invoices, members } from "../../../../db/schema";
import { eq, and } from "drizzle-orm";

export const POST: APIRoute = async ({
  request,
  redirect,
  locals,
  params,
}) => {
  const user = locals.user;
  if (!user) {
    return redirect("/login");
  }

  const { id: invoiceId } = params;
  if (!invoiceId) {
    return new Response("Invoice ID required", { status: 400 });
  }

  const formData = await request.formData();
  const status = formData.get("status") as string;

  const validStatuses = [
    "draft",
    "sent",
    "paid",
    "void",
    "accepted",
    "declined",
  ];

  if (!status || !validStatuses.includes(status)) {
    return new Response("Invalid status", { status: 400 });
  }

  const invoice = await db
    .select()
    .from(invoices)
    .where(eq(invoices.id, invoiceId))
    .get();

  if (!invoice) {
    return new Response("Invoice not found", { status: 404 });
  }

  const membership = await db
    .select()
    .from(members)
    .where(
      and(
        eq(members.userId, user.id),
        eq(members.organizationId, invoice.organizationId)
      )
    )
    .get();

  if (!membership) {
    return new Response("Unauthorized", { status: 401 });
  }

  // Destructive status changes require owner/admin
  const destructiveStatuses = ["void"];
  const isAdminOrOwner = membership.role === "owner" || membership.role === "admin";
  if (destructiveStatuses.includes(status) && !isAdminOrOwner) {
    return new Response("Only owners and admins can void invoices", { status: 403 });
  }

  try {
    await db
      .update(invoices)
      .set({ status: status as any })
      .where(eq(invoices.id, invoiceId));

    return redirect(`/dashboard/invoices/${invoiceId}`);
  } catch (error) {
    console.error("Error updating invoice status:", error);
    return new Response("Internal Server Error", { status: 500 });
  }
};