import { loadSync } from "$std/dotenv/mod.ts";
loadSync({ allowEmptyValues: true, export: true });
import { Pool } from "pg";

const pool = new Pool({
  connectionString: Deno.env.get("POSTGRES_OPTIONS")?.replace(
    "postgresql://",
    "postgres://",
  ),
});

async function verifySchema() {
  const client = await pool.connect();

  try {
    console.log("Testing database connection...");

    // Test connection with a simple query
    const result = await client.query(`
      SELECT table_name
      FROM information_schema.tables
      WHERE table_schema = 'public'
      ORDER BY table_name
    `);

    console.log("✅ Database connection established");

    // Expected tables
    const expectedTables = [
      "users",
      "roles",
      "user_roles",
      "state_keys",
      "user_tokens",
      "web_tokens",
      "obligations",
      "incomes",
      "financial_balances",
      "properties",
      "rent_schedules",
      "leases",
      "payment_methods",
      "property_media",
      "lease_documents",
      "tenant_applications",
      "tenant_invites",
      "payment_transactions",
      "reminders",
      "messages",
      "maintenance_requests",
      "user_pins",
      "session_configs",
    ];

    const existingTables = result.rows.map((row) => String(row["table_name"]));

    console.log("\n📋 Existing tables:", existingTables);
    console.log("📋 Total tables:", existingTables.length);

    const missingTables = expectedTables.filter(
      (table) => !existingTables.includes(table),
    );

    if (missingTables.length > 0) {
      console.error("\n❌ Missing tables:", missingTables);
      Deno.exit(1);
    } else {
      console.log("\n✅ All expected tables exist in database!");
    }

    // Verify key columns on critical tables
    console.log("\n🔍 Verifying key columns...");

    const usersColumns = await client.query(`
      SELECT column_name
      FROM information_schema.columns
      WHERE table_name = 'users' AND table_schema = 'public'
      ORDER BY column_name
    `);
    console.log(
      "✅ users table columns:",
      usersColumns.rows.map((r) => r["column_name"]),
    );

    const propertiesColumns = await client.query(`
      SELECT column_name
      FROM information_schema.columns
      WHERE table_name = 'properties' AND table_schema = 'public'
      ORDER BY column_name
    `);
    console.log(
      "✅ properties table columns:",
      propertiesColumns.rows.map((r) => r["column_name"]),
    );

    const leasesColumns = await client.query(`
      SELECT column_name
      FROM information_schema.columns
      WHERE table_name = 'leases' AND table_schema = 'public'
      ORDER BY column_name
    `);
    console.log(
      "✅ leases table columns:",
      leasesColumns.rows.map((r) => r["column_name"]),
    );

    console.log("\n✅ Database schema verification complete!");
    client.release();
    await pool.end();
    Deno.exit(0);
  } catch (error) {
    console.error("❌ Database schema verification failed:", error);
    client.release();
    await pool.end();
    Deno.exit(1);
  }
}

verifySchema();