import { readFileSync } from 'node:fs';
import { fileURLToPath } from 'node:url';
import * as XLSX from 'xlsx';
import { parseWorkbook } from '../src/core/parseWorkbook';
import type { PierInput } from '../src/core/types';

const P1_PATH = fileURLToPath(new URL('../public/samples/P1.xlsx', import.meta.url));

export function loadWorkbook(path: string = P1_PATH): XLSX.WorkBook {
  return XLSX.read(readFileSync(path), { type: 'buffer' });
}

export function loadP1(): PierInput {
  const { piers, issues } = parseWorkbook(loadWorkbook());
  if (issues.length) throw new Error(`P1 parse issues: ${JSON.stringify(issues)}`);
  const p1 = piers.find((p) => p.name === 'P1');
  if (!p1) throw new Error('P1 not found');
  return p1;
}