const Database = require("better-sqlite3");
const path = require("node:path");

const dbPath = path.resolve("data", "leistungsbilanz.db");
const db = new Database(dbPath, { readonly: true });

const requiredTables = [
  "circuit_sections",
  "circuits",
  "circuit_device_rows",
  "legacy_consumer_circuit_migrations",
  "legacy_consumer_migration_reports",
];

const rows = db
  .prepare("SELECT name FROM sqlite_master WHERE type='table' AND name IN (?, ?, ?, ?, ?)")
  .all(...requiredTables);

const existing = new Set(rows.map((row) => row.name));
const missing = requiredTables.filter((name) => !existing.has(name));
const requiredProjectDeviceColumns = [
  "phase_type",
  "connection_kind",
  "cost_group",
  "power_per_unit",
  "simultaneity_factor",
  "cos_phi",
  "remark",
];
const projectDeviceColumns = new Set(
  db.prepare("PRAGMA table_info(project_devices)").all().map((column) => column.name)
);
const missingProjectDeviceColumns = requiredProjectDeviceColumns.filter(
  (name) => !projectDeviceColumns.has(name)
);

console.log("Database:", dbPath);
console.log("Required tables:", requiredTables.join(", "));
console.log("Existing tables:", [...existing].join(", ") || "(none)");
console.log("Required project-device columns:", requiredProjectDeviceColumns.join(", "));

if (missing.length > 0) {
  console.error("Missing tables:", missing.join(", "));
  process.exit(1);
}

if (missingProjectDeviceColumns.length > 0) {
  console.error("Missing project-device columns:", missingProjectDeviceColumns.join(", "));
  process.exit(1);
}

console.log("Circuit-first schema verification passed.");