'use server';

import { auth } from "@/auth";
import { prisma } from "@/lib/prisma";
import { revalidatePath } from "next/cache";

export async function syncOneDrive() {
  const session = await auth();
  
  if (!session?.user?.id) throw new Error("Unauthorized");

  // 1. Get the OAuth token from your PostgreSQL 'Account' table
  const account = await prisma.account.findFirst({
    where: { userId: session.user.id },
  });

  if (!account?.access_token) throw new Error("Microsoft account not linked properly");

  // 2. Fetch the files from Microsoft Graph
  const response = await fetch("https://graph.microsoft.com/v1.0/me/drive/root/children", {
    headers: { Authorization: `Bearer ${account.access_token}` },
  });
  
  const data = await response.json();

  // 3. The "Sync Loop": Map OneDrive items to your Postgres FileNode table
  for (const item of data.value) {
    const extension = item.name.split('.').pop()?.toUpperCase() || (item.folder ? 'FOLDER' : 'UNKNOWN');

    await prisma.fileNode.upsert({
      where: { oneDriveId: item.id },
      update: {
        name: item.name,
        size: item.size,
        metadata: { type: extension }, // Store the "Type" in your JSONB field
      },
      create: {
        oneDriveId: item.id,
        name: item.name,
        size: item.size,
        isFolder: !!item.folder,
        path: item.parentReference.path + '/' + item.name,
        ownerId: session.user.id,
        metadata: { type: extension },
      }
    });
  }
  
  // Refresh the dashboard UI to show new data
  revalidatePath('/dashboard');
  return { success: true, count: data.value.length };
}