import test,{after} from 'node:test';
import assert from 'node:assert/strict';
import {mkdtempSync,rmSync} from 'node:fs';
import {join} from 'node:path';
import {tmpdir} from 'node:os';
const root=mkdtempSync(join(tmpdir(),'ihaleist-history-'));
process.env.IHALEIST_SHARED_DATA_DIR=root;
const {observeTenders,tenderHistory}=await import('../server/tender-history.mjs');
after(()=>rmSync(root,{recursive:true,force:true}));
test('source observations persist changes, ignore identical reloads, and retain reversions',()=>{
 const t={id:'ilan-1',ikn:'2026/100',kurum:'A',tarih:'10.09.2026',saat:'10:00',aciklama:'Tam ilan metni'};
 observeTenders([t]);observeTenders([{...t,notes:['private'],aciklama:undefined}]);
 assert.equal(tenderHistory(t).records.length,1);
 observeTenders([{...t,saat:'11:00'}]);observeTenders([t]);
 const history=tenderHistory(t,{limit:2});
 assert.equal(history.records.length,2);assert.ok(history.nextCursor);
 assert.deepEqual(history.records[0].changes,[{field:'saat',before:'11:00',after:'10:00'}]);
 assert.equal(tenderHistory(t,{before:history.nextCursor}).records.length,1);
});
test('different sources and institutional DT identifiers cannot overwrite one another',()=>{
 const a={id:'dt-1',ikn:'26DT123',kurum:'A',durum:'Açık'};
 const b={...a,kurum:'B',durum:'İptal'};
 observeTenders([a,b]);assert.equal(tenderHistory(a).records.length,1);
 assert.equal(tenderHistory(b).records.length,1);
 const c={id:'ilan-2',ikn:'2026/200',kurum:'A',durum:'Açık'};
 observeTenders([c,{...c,id:'history-2',durum:'Sonuçlandı'},c]);
 assert.equal(tenderHistory(c).records.length,2);
 assert.ok(tenderHistory(c).records.every(r=>r.changes.length===0));
});