// 예비창업자 자격 + 현재 열린 공고 전체를 CSV 로 내보낸다(신청 추적용).
// 실행: LD_LIBRARY_PATH=$ORACLE_IC_LIB_DIR node scripts/export_eligible_csv.js
import { writeFile, mkdir } from 'node:fs/promises';
import { withConnection, closePool, oracledb } from '../src/db.js';

const SQL = `
  SELECT * FROM (
    SELECT title, category, agency, source_code, detail_url, apply_start, apply_end,
           CASE WHEN apply_end IS NULL THEN 9999 ELSE (apply_end - TRUNC(SYSDATE)) END AS dleft,
           ROW_NUMBER() OVER (PARTITION BY title ORDER BY CASE source_code WHEN 'kstartup' THEN 1 WHEN 'bizinfo' THEN 2 ELSE 3 END) rn
      FROM gov_opportunity
     WHERE (apply_end IS NULL OR apply_end >= TRUNC(SYSDATE))
       AND (
            target LIKE '%' || :k1 || '%' OR target LIKE '%' || :k2 || '%'
         OR DBMS_LOB.INSTR(body_text, :k1) > 0 OR DBMS_LOB.INSTR(body_text, :k2) > 0
       )
  )
  WHERE rn = 1
  ORDER BY dleft ASC, source_code`;

function csvCell(v) {
  if (v == null) return '';
  const s = String(v).replace(/"/g, '""').replace(/\r?\n/g, ' ');
  return `"${s}"`;
}
function ymd(d) {
  return d ? new Date(d).toISOString().slice(0, 10) : '';
}
function region(title) {
  const m = /^\[([^\]]{1,8})\]/.exec(title);
  return m ? m[1] : '';
}

const rows = await withConnection(async (conn) => {
  const r = await conn.execute(
    SQL,
    { k1: '예비창업', k2: '예비 창업' },
    { outFormat: oracledb.OUT_FORMAT_OBJECT }
  );
  return r.rows;
});
await closePool();

const header = ['신청완료', 'D-day', '마감일', '지역', '분야', '주관기관', '소스', '제목', '링크'];
const lines = [header.map(csvCell).join(',')];
for (const x of rows) {
  lines.push(
    [
      '',
      x.DLEFT === 9999 ? '상시' : `D-${x.DLEFT}`,
      x.DLEFT === 9999 ? '상시/예산소진' : ymd(x.APPLY_END),
      region(x.TITLE),
      x.CATEGORY || '',
      x.AGENCY || '',
      x.SOURCE_CODE,
      x.TITLE,
      x.DETAIL_URL || '',
    ]
      .map(csvCell)
      .join(',')
  );
}

await mkdir(new URL('../exports/', import.meta.url), { recursive: true });
const out = new URL('../exports/eligible_opportunities.csv', import.meta.url);
// 엑셀 한글 깨짐 방지 BOM
await writeFile(out, '' + lines.join('\n'), 'utf8');
console.log(`내보냄: ${rows.length}건 → government/exports/eligible_opportunities.csv`);