import { mkdirSync, readFileSync, rmSync } from 'node:fs';
import { dirname, join } from 'node:path';
import { Database } from 'bun:sqlite';

const MIGRATION_FILES = [
  '0000_cold_silver_centurion.sql',
  '0001_glossy_statement_snapshots.sql',
  '0002_workflow_task_projection_metadata.sql',
  '0003_task_stage_event_timeline.sql',
  '0004_watchlist_company_taxonomy.sql',
  '0005_financial_taxonomy_v3.sql',
  '0006_coverage_journal_tracking.sql',
  '0007_company_financial_bundles.sql',
  '0008_research_workspace.sql'
] as const;

export const E2E_DATABASE_PATH = join(process.cwd(), 'data', 'e2e.sqlite');
export const E2E_WORKFLOW_DATA_DIR = join(process.cwd(), '.workflow-data', 'e2e');

function removeFileIfPresent(path: string) {
  rmSync(path, { force: true });
}

function applyMigrations(database: Database) {
  for (const file of MIGRATION_FILES) {
    const sql = readFileSync(join(process.cwd(), 'drizzle', file), 'utf8');
    database.exec(sql);
  }
}

export function prepareE2eDatabase() {
  mkdirSync(dirname(E2E_DATABASE_PATH), { recursive: true });

  removeFileIfPresent(E2E_DATABASE_PATH);
  removeFileIfPresent(`${E2E_DATABASE_PATH}-shm`);
  removeFileIfPresent(`${E2E_DATABASE_PATH}-wal`);
  rmSync(E2E_WORKFLOW_DATA_DIR, { force: true, recursive: true });

  const database = new Database(E2E_DATABASE_PATH, { create: true });

  try {
    database.exec('PRAGMA foreign_keys = ON;');
    applyMigrations(database);
  } finally {
    database.close();
  }
}

if (import.meta.main) {
  prepareE2eDatabase();
  console.info(`[e2e] prepared SQLite database at ${E2E_DATABASE_PATH}`);
}