import { createPostgresPool } from './src/lib/postgres.mjs';

async function main() {
  const pool = createPostgresPool({ connectionString: process.env.POSTGRES_URL });
  const inventoryRows = await pool.query(`
    SELECT event_id as inventory_id, observed_at, payload
    FROM intent_inventory_snapshots
    ORDER BY COALESCE(observed_at, ingested_at) DESC
    LIMIT 2000
  `);
  const snapshots = inventoryRows.rows.map(r => ({
    inventory_id: r.inventory_id,
    observed_at: r.observed_at,
    spendable: r.payload?.spendable || {},
  })).sort((a,b) => new Date(a.observed_at) - new Date(b.observed_at));

  const activeAssetIds = Object.keys(snapshots[0].spendable);
  const deltas = [];
  for (let i = 1; i < snapshots.length; i++) {
    const prev = snapshots[i-1].spendable;
    const curr = snapshots[i].spendable;
    const delta = {};
    for (const a of activeAssetIds) {
      const p = BigInt(prev[a] || 0);
      const c = BigInt(curr[a] || 0);
      if (c - p !== 0n) delta[a] = (c - p).toString();
    }
    if (Object.keys(delta).length > 0) {
      deltas.push({ observed_at: snapshots[i].observed_at, delta });
    }
  }
  console.log("Total deltas:", deltas.length);
  for (let i = 0; i < Math.min(5, deltas.length); i++) {
    console.log(deltas[i].observed_at, Object.entries(deltas[i].delta).filter(x => x[1] !== '0'));
  }
  process.exit(0);
}
main().catch(console.error);