baceb88347
- NAS storage for created invoices (PDF via puppeteer), received invoices, and offers with auto-save on create/edit - Deterministic file paths derived from DB fields (no file_path column needed) - Separate NAS mount points: NAS_FINANCIALS_PATH, NAS_OFFERS_PATH - Invoice language field (cs/en) stored per invoice, replaces lang modal - Invoices list filtered by month/year matching KPI card selection - Centralized date helpers (src/utils/date.ts) replacing all .toISOString() calls that returned UTC instead of local time - Attendance project switching uses exact time (not rounded) - Comment cleanup: removed ~100 unnecessary/Czech comments - Removed as-any casts in orders and attendance - Prisma migrations: add invoice language, drop received_invoices BLOB columns Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
102 lines
3.2 KiB
TypeScript
102 lines
3.2 KiB
TypeScript
/**
|
||
* Czech public holidays & work fund calculator.
|
||
* Port of PHP CzechHolidays class.
|
||
*/
|
||
|
||
import { localDateStr } from "./date";
|
||
|
||
const holidayCache = new Map<number, string[]>();
|
||
|
||
/** Easter Sunday using the Anonymous Gregorian algorithm */
|
||
function getEasterSunday(year: number): string {
|
||
const a = year % 19;
|
||
const b = Math.floor(year / 100);
|
||
const c = year % 100;
|
||
const d = Math.floor(b / 4);
|
||
const e = b % 4;
|
||
const f = Math.floor((b + 8) / 25);
|
||
const g = Math.floor((b - f + 1) / 3);
|
||
const h = (19 * a + b - d - g + 15) % 30;
|
||
const i = Math.floor(c / 4);
|
||
const k = c % 4;
|
||
const l = (32 + 2 * e + 2 * i - h - k) % 7;
|
||
const m = Math.floor((a + 11 * h + 22 * l) / 451);
|
||
const month = Math.floor((h + l - 7 * m + 114) / 31);
|
||
const day = ((h + l - 7 * m + 114) % 31) + 1;
|
||
return `${year}-${String(month).padStart(2, "0")}-${String(day).padStart(2, "0")}`;
|
||
}
|
||
|
||
/** All Czech public holidays for a year (11 fixed + 2 Easter-based) */
|
||
export function getHolidays(year: number): string[] {
|
||
if (holidayCache.has(year)) return holidayCache.get(year)!;
|
||
|
||
const y = String(year);
|
||
const holidays = [
|
||
`${y}-01-01`, // New Year's / Restoration of Czech Independence
|
||
`${y}-05-01`, // Labour Day
|
||
`${y}-05-08`, // Victory Day
|
||
`${y}-07-05`, // Saints Cyril and Methodius Day
|
||
`${y}-07-06`, // Jan Hus Day
|
||
`${y}-09-28`, // Czech Statehood Day
|
||
`${y}-10-28`, // Czechoslovak Independence Day
|
||
`${y}-11-17`, // Freedom and Democracy Day
|
||
`${y}-12-24`, // Christmas Eve
|
||
`${y}-12-25`, // Christmas Day
|
||
`${y}-12-26`, // St. Stephen's Day
|
||
];
|
||
|
||
// Easter-based
|
||
const easterSunday = getEasterSunday(year);
|
||
const easterDate = new Date(easterSunday);
|
||
const goodFriday = new Date(easterDate);
|
||
goodFriday.setDate(goodFriday.getDate() - 2);
|
||
const easterMonday = new Date(easterDate);
|
||
easterMonday.setDate(easterMonday.getDate() + 1);
|
||
|
||
holidays.push(localDateStr(goodFriday)); // Good Friday
|
||
holidays.push(localDateStr(easterMonday)); // Easter Monday
|
||
|
||
holidays.sort();
|
||
holidayCache.set(year, holidays);
|
||
return holidays;
|
||
}
|
||
|
||
/** Check if a date string (YYYY-MM-DD) is a Czech public holiday */
|
||
export function isHoliday(dateStr: string): boolean {
|
||
const year = parseInt(dateStr.substring(0, 4), 10);
|
||
return getHolidays(year).includes(dateStr);
|
||
}
|
||
|
||
/** Business days in a month (Mon-Fri excluding public holidays) */
|
||
export function getBusinessDaysInMonth(
|
||
year: number,
|
||
month: number,
|
||
upToDay?: number,
|
||
): number {
|
||
const holidays = getHolidays(year);
|
||
let count = 0;
|
||
const daysInMonth = new Date(year, month + 1, 0).getDate();
|
||
const maxDay = upToDay ? Math.min(upToDay, daysInMonth) : daysInMonth;
|
||
|
||
for (let day = 1; day <= maxDay; day++) {
|
||
const date = new Date(year, month, day);
|
||
const dow = date.getDay();
|
||
if (dow !== 0 && dow !== 6) {
|
||
const dateStr = `${year}-${String(month + 1).padStart(2, "0")}-${String(day).padStart(2, "0")}`;
|
||
if (!holidays.includes(dateStr)) {
|
||
count++;
|
||
}
|
||
}
|
||
}
|
||
return count;
|
||
}
|
||
|
||
/** Monthly work fund in hours (business days × 8) */
|
||
export function getMonthlyWorkFund(
|
||
year: number,
|
||
month: number,
|
||
upToDay?: number,
|
||
): number {
|
||
return getBusinessDaysInMonth(year, month, upToDay) * 8;
|
||
}
|