123 lines
3.8 KiB
JavaScript
123 lines
3.8 KiB
JavaScript
'use strict';
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const PERSIAN_WEEKDAYS = ['یکشنبه', 'دوشنبه', 'سهشنبه', 'چهارشنبه', 'پنجشنبه', 'جمعه', 'شنبه'];
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const IRAN_WEEK_ORDER = [6, 0, 1, 2, 3, 4, 5];
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const toDate = (value) => {
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if (!value) return null;
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const date = value instanceof Date ? value : new Date(value);
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return Number.isNaN(date.getTime()) ? null : date;
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};
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const formatClockPart = (time) => {
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const raw = String(time || '').trim();
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if (!raw) return '';
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const [hoursRaw, minutesRaw] = raw.split(':');
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const hours = String(parseInt(hoursRaw, 10));
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if (hours === 'NaN') return '';
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if (!minutesRaw || minutesRaw === '00') return hours;
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return `${hours}:${minutesRaw}`;
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};
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const formatCourseTime = (startTime, endTime) => {
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const start = formatClockPart(startTime);
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const end = formatClockPart(endTime);
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if (!start) return '';
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if (!end) return start;
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return `از ساعت ${start} تا ${end}`;
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};
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const weekdayIndex = (value) => {
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const date = toDate(value);
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return date ? date.getDay() : null;
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};
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const joinFaList = (items) => {
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if (!items.length) return '';
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if (items.length === 1) return items[0];
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if (items.length === 2) return `${items[0]} و ${items[1]}`;
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return `${items.slice(0, -1).join('، ')} و ${items[items.length - 1]}`;
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};
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const normalizeWeekdays = (days) => {
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if (!Array.isArray(days)) return [];
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const unique = [];
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const seen = new Set();
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for (const value of days) {
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const index = Number(value);
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if (!Number.isInteger(index) || index < 0 || index > 6 || seen.has(index)) continue;
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seen.add(index);
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unique.push(index);
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}
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unique.sort((a, b) => IRAN_WEEK_ORDER.indexOf(a) - IRAN_WEEK_ORDER.indexOf(b));
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return unique;
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};
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const normalizeClockTime = (value) => {
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if (value == null) return '';
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const raw = String(value).trim();
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if (!raw) return '';
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const match = raw.match(/^(\d{1,2})(?::(\d{1,2}))?$/);
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if (!match) return '';
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const hours = Number(match[1]);
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const minutes = Number(match[2] || 0);
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if (hours > 23 || minutes > 59) return '';
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return `${String(hours).padStart(2, '0')}:${String(minutes).padStart(2, '0')}`;
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};
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const formatClassDaysFromIndexes = (days = []) => {
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const indexes = normalizeWeekdays(days);
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return joinFaList(indexes.map((index) => PERSIAN_WEEKDAYS[index]).filter(Boolean));
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};
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const formatClassDays = (sessions = []) => {
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const indexes = [];
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const seen = new Set();
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for (const session of sessions) {
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const dayIndex = weekdayIndex(session?.day);
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if (dayIndex == null || seen.has(dayIndex)) continue;
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seen.add(dayIndex);
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indexes.push(dayIndex);
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}
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return formatClassDaysFromIndexes(indexes);
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};
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const formatClassStartDate = (value) => {
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const date = toDate(value);
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if (!date) return '';
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try {
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return date.toLocaleDateString('fa-IR');
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} catch {
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return date.toISOString().slice(0, 10);
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}
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};
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const buildClassScheduleContext = (classDoc, sessions = [], currentSession = null) => {
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const sortedSessions = [...sessions].sort((a, b) => {
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const left = toDate(a?.day)?.getTime() || 0;
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const right = toDate(b?.day)?.getTime() || 0;
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return left - right;
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});
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const sessionForTime = currentSession || sortedSessions[0] || null;
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const storedDays = formatClassDaysFromIndexes(classDoc?.days);
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const storedTime = formatCourseTime(classDoc?.startTime, classDoc?.endTime);
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return {
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classStartDate: formatClassStartDate(classDoc?.startDate || sortedSessions[0]?.day),
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classDays: storedDays || formatClassDays(sortedSessions),
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courseTime: storedTime || formatCourseTime(sessionForTime?.startTime, sessionForTime?.endTime)
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};
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};
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module.exports = {
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IRAN_WEEK_ORDER,
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PERSIAN_WEEKDAYS,
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formatCourseTime,
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formatClassDays,
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formatClassDaysFromIndexes,
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formatClassStartDate,
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normalizeWeekdays,
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normalizeClockTime,
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buildClassScheduleContext
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};
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