@siva-sub/mcp-public-transport
Version:
A Model Context Protocol server for Singapore transport data with real-time information and routing
180 lines (179 loc) • 7.28 kB
JavaScript
import { logger } from '../utils/logger.js';
export class SingaporeTimeService {
timezone = 'Asia/Singapore';
businessHours = {
weekdays: { start: 9, end: 18 },
saturday: { start: 9, end: 13 },
sunday: { closed: true }
};
rushHours = {
morning: { start: 7, end: 9 },
evening: { start: 17, end: 19 },
weekendsOnly: false
};
getCurrentTime() {
try {
const now = new Date();
// Create a proper Singapore time Date object
const singaporeTime = new Date(now.toLocaleString("en-US", { timeZone: this.timezone }));
return {
timezone: this.timezone,
datetime: now.toISOString(), // Keep original UTC ISO string
timestamp: now.getTime(),
formatted: {
date: now.toLocaleDateString('en-SG', { timeZone: this.timezone }),
time: now.toLocaleTimeString('en-SG', { timeZone: this.timezone }),
full: now.toLocaleString('en-SG', { timeZone: this.timezone }),
},
businessContext: {
isBusinessHours: this.isBusinessHours(singaporeTime),
isRushHour: this.isRushHour(singaporeTime),
isWeekend: this.isWeekend(singaporeTime),
isPublicHoliday: false, // TODO: Implement holiday detection
}
};
}
catch (error) {
logger.error('Failed to get Singapore time', error);
throw new Error('Failed to get Singapore time');
}
}
formatForOneMap(date) {
try {
const singaporeDate = new Date(date.toLocaleString("en-US", { timeZone: this.timezone }));
return {
date: this.formatDateForOneMap(singaporeDate),
time: this.formatTimeForOneMap(singaporeDate),
};
}
catch (error) {
logger.error('Failed to format time for OneMap', error);
throw new Error('Failed to format time for OneMap');
}
}
formatDateForOneMap(date) {
// OneMap expects MM-DD-YYYY format
const month = String(date.getMonth() + 1).padStart(2, '0');
const day = String(date.getDate()).padStart(2, '0');
const year = date.getFullYear();
return `${month}-${day}-${year}`;
}
formatTimeForOneMap(date) {
// OneMap expects HH:MM:SS format
const hours = String(date.getHours()).padStart(2, '0');
const minutes = String(date.getMinutes()).padStart(2, '0');
const seconds = String(date.getSeconds()).padStart(2, '0');
return `${hours}:${minutes}:${seconds}`;
}
isBusinessHours(date) {
const hour = date.getHours();
const day = date.getDay(); // 0 = Sunday, 1 = Monday, etc.
if (day === 0) { // Sunday
return !this.businessHours.sunday.closed;
}
else if (day === 6) { // Saturday
return hour >= this.businessHours.saturday.start && hour < this.businessHours.saturday.end;
}
else { // Weekdays (Monday to Friday)
return hour >= this.businessHours.weekdays.start && hour < this.businessHours.weekdays.end;
}
}
isRushHour(date) {
const hour = date.getHours();
const day = date.getDay();
if (this.rushHours.weekendsOnly && (day === 0 || day === 6)) {
return false; // No rush hour on weekends
}
return (hour >= this.rushHours.morning.start && hour < this.rushHours.morning.end) ||
(hour >= this.rushHours.evening.start && hour < this.rushHours.evening.end);
}
isWeekend(date) {
const day = date.getDay();
return day === 0 || day === 6; // Sunday or Saturday
}
getRushHourInfo(date) {
const targetDate = date || new Date();
const singaporeTime = new Date(targetDate.toLocaleString("en-US", { timeZone: this.timezone }));
const hour = singaporeTime.getHours();
const day = singaporeTime.getDay();
const current = this.isRushHour(singaporeTime);
let type;
if (current) {
if (hour >= this.rushHours.morning.start && hour < this.rushHours.morning.end) {
type = 'morning';
}
else if (hour >= this.rushHours.evening.start && hour < this.rushHours.evening.end) {
type = 'evening';
}
}
let nextRushHour;
if (!current && day >= 1 && day <= 5) { // Weekdays only
if (hour < this.rushHours.morning.start) {
// Next rush hour is morning rush today
nextRushHour = {
start: `${this.rushHours.morning.start}:00`,
end: `${this.rushHours.morning.end}:00`
};
}
else if (hour < this.rushHours.evening.start) {
// Next rush hour is evening rush today
nextRushHour = {
start: `${this.rushHours.evening.start}:00`,
end: `${this.rushHours.evening.end}:00`
};
}
else {
// Next rush hour is tomorrow morning (if it's a weekday)
const tomorrow = new Date(singaporeTime);
tomorrow.setDate(tomorrow.getDate() + 1);
if (tomorrow.getDay() >= 1 && tomorrow.getDay() <= 5) {
nextRushHour = {
start: `${this.rushHours.morning.start}:00 (tomorrow)`,
end: `${this.rushHours.morning.end}:00 (tomorrow)`
};
}
}
}
return {
current,
nextRushHour,
type
};
}
getNextBusinessHours(date) {
const targetDate = date || new Date();
const singaporeTime = new Date(targetDate.toLocaleString("en-US", { timeZone: this.timezone }));
const hour = singaporeTime.getHours();
const day = singaporeTime.getDay();
if (this.isBusinessHours(singaporeTime)) {
return 'Currently business hours';
}
if (day >= 1 && day <= 5) { // Weekdays
if (hour < this.businessHours.weekdays.start) {
return `${this.businessHours.weekdays.start}:00 today`;
}
else {
return `${this.businessHours.weekdays.start}:00 tomorrow`;
}
}
else if (day === 6) { // Saturday
if (hour < this.businessHours.saturday.start) {
return `${this.businessHours.saturday.start}:00 today`;
}
else {
return `${this.businessHours.weekdays.start}:00 Monday`;
}
}
else { // Sunday
return `${this.businessHours.weekdays.start}:00 Monday`;
}
}
// Utility method to create a Singapore time from UTC
fromUTC(utcDate) {
return new Date(utcDate.toLocaleString("en-US", { timeZone: this.timezone }));
}
// Utility method to get Singapore offset from UTC
getSingaporeOffset() {
return '+08:00'; // Singapore is always UTC+8
}
}