import { test } from 'node:test';
import assert from 'node:assert/strict';
import { createTenderICS, tenderDeadline, deadlineInfo, calendarMonthDays, istanbulDateKey } from '../src/services/tenderCalendar.js';
const t = {ikn:'2026/1582991',baslik:'Mikroskop',kurum:'Giresun',tarih:'10.09.2026',saat:'',aciklama:'Tarih ve Saati : 10.09.2026 - 10:00'};
test('Giresun date is September 10 at 10:00 Turkey, not hard-coded August', () => {
  assert.equal(tenderDeadline(t).toISOString(),'2026-09-10T07:00:00.000Z');
  assert.match(createTenderICS(t), /DTSTART:20260910T070000Z/);
});
test('all five tender deadlines and year rollover', () => {
  for (const [date,time,expected] of [
    ['09.09.2026','10:00','2026-09-09T07:00'],['11.09.2026','10:00','2026-09-11T07:00'],
    ['22.09.2026','10:30','2026-09-22T07:30'],['22.09.2026','11:00','2026-09-22T08:00'],
    ['01.01.2027','01:00','2026-12-31T22:00'],['29.02.2028','10:00','2028-02-29T07:00']])
    assert.ok(tenderDeadline({...t,tarih:date,saat:time}).toISOString().startsWith(expected));
});
test('missing time, impossible date, invalid time are rejected', () => {
  for (const patch of [{saat:'',aciklama:''},{tarih:'31.02.2026',saat:'10:00'},{saat:'25:00'}])
    assert.throws(() => tenderDeadline({...t,...patch}));
});
test('ICS escapes text, folds UTF-8 lines, keeps stable UID', () => {
  const ics = createTenderICS({...t,baslik:'Ş'.repeat(100)+'\nEND:VEVENT;,'});
  assert.ok(ics.split('\r\n').every(l => Buffer.byteLength(l) <= 75));
  assert.equal(ics.split('UID:')[1].split('\r\n')[0],'2026%2F1582991@ihaleist.com');
  assert.ok(ics.includes('\\nEND:VEVENT\\;\\,'));
});

test('all countdowns use Istanbul calendar days and exact expiry', () => {
  const now = new Date('2026-09-06T08:00:00Z');
  assert.equal(deadlineInfo(t,now).days,4);
  assert.equal(deadlineInfo(t,now).label,'4 gün');
  assert.equal(deadlineInfo(t,new Date('2026-09-10T06:59:00Z')).expired,false);
  assert.equal(deadlineInfo(t,new Date('2026-09-10T07:00:00Z')).expired,true);
  assert.equal(istanbulDateKey(new Date('2026-12-31T22:00:00Z')),'2027-01-01');
});
test('missing time stays unknown today, impossible date is not counted', () => {
  const now=new Date('2026-09-10T10:00:00Z');
  const info=deadlineInfo({tarih:'10.09.2026'},now);
  assert.equal(info.expired,null);assert.equal(info.deadline,null);
  assert.match(info.label,/saat doğrulanmalı/);
  assert.equal(deadlineInfo({tarih:'31.02.2026'},now).days,null);
  assert.equal(deadlineInfo({tarih:'09.09.2026'},now).expired,true);
});
test('month view includes late-month tenders and leap days', () => {
  assert.equal(calendarMonthDays('2026-09').length,30);
  assert.ok(calendarMonthDays('2026-09').some(d=>d.date==='22.09.2026'));
  assert.equal(calendarMonthDays('2028-02').length,29);
  assert.equal(calendarMonthDays('2027-02').length,28);
  assert.deepEqual(calendarMonthDays('2026-13'),[]);
});