import { NextRequest, NextResponse } from 'next/server';
import {
  upsertAccount, deleteAccount,
  upsertPipeline, deletePipeline,
  addActivity, deleteActivity,
  upsertTarget, deleteTarget,
  getDbStats, getDashboardData,
} from '@/lib/db';

export async function GET() {
  return NextResponse.json({ stats: getDbStats() });
}

export async function POST(req: NextRequest) {
  try {
    const { action, table, record } = await req.json();

    if (action === 'delete') {
      switch (table) {
        case 'accounts': deleteAccount(record.Account_Name); break;
        case 'pipeline': deletePipeline(record.Opportunity_ID); break;
        case 'activities': deleteActivity(record.id); break;
        case 'targets': deleteTarget(record.Account_Name); break;
      }
      return NextResponse.json({ success: true, stats: getDbStats() });
    }

    if (action === 'upsert') {
      switch (table) {
        case 'accounts': upsertAccount(record); break;
        case 'pipeline': upsertPipeline(record); break;
        case 'activities': addActivity(record); break;
        case 'targets': upsertTarget(record); break;
      }
      return NextResponse.json({ success: true, stats: getDbStats() });
    }

    if (action === 'list') {
      const data = getDashboardData();
      const tableData = {
        accounts: data.accounts,
        pipeline: data.pipeline,
        activities: data.activities,
        targets: data.targets,
      }[table];
      return NextResponse.json({ data: tableData || [] });
    }

    return NextResponse.json({ error: 'Unknown action' }, { status: 400 });
  } catch (error) {
    console.error('[Admin API]', error);
    return NextResponse.json({ error: String(error) }, { status: 500 });
  }
}