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* EventValidator - Handles validation logic for events
*
* Ensures event data meets quality standards before storage and prevents system abuse.
* Validates formats, timezones, and business rules to maintain data consistency.
*
* Validation design rationale:
* - Input validation prevents malformed events from corrupting the system
* - Timezone handling ensures accurate scheduling across regions
* - Future date requirements prevent confusion from past events
* - Role validation ensures notification targeting works correctly
*/
class EventValidator {
constructor(bot) {
this.bot = bot;
}
/**
* Validate event data including region, location, and date
*/
validateEventData(eventData) {
// Validate required fields
if (!eventData.name || eventData.name.trim().length === 0) {
return { valid: false, error: 'Event name is required' };
}
if (!eventData.region || eventData.region.trim().length === 0) {
return { valid: false, error: 'Region is required' };
}
if (!eventData.eventDate) {
return { valid: false, error: 'Event date is required' };
}
// Validate event name length
if (eventData.name.length > 100) {
return { valid: false, error: 'Event name must be 100 characters or less' };
}
// Validate and normalize date
const dateValidation = this.validateEventDate(eventData.eventDate);
if (!dateValidation.valid) {
return dateValidation;
}
return { valid: true };
}
/**
* Validate event date format and ensure it's in the future
*/
validateEventDate(eventDateStr) {
try {
// Parse the date string and validate format
const dateRegex = /^\d{4}-\d{2}-\d{2}\s+\d{1,2}:\d{2}$/;
if (!dateRegex.test(eventDateStr.trim())) {
return {
valid: false,
error: 'Invalid date format. Use YYYY-MM-DD HH:MM (e.g., 2024-08-25 18:00)'
};
}
// Parse user input as UK local time and convert to UTC for storage
// User enters time in UK timezone, we store as UTC for Discord/databases
const [datePart, timePart] = eventDateStr.trim().split(' ');
const [year, month, day] = datePart.split('-').map(Number);
const [hour, minute] = timePart.split(':').map(Number);
// Create a Date object treating the input as UK time
// Use a helper method to get proper UK timezone offset
const eventDate = this.parseUKTimeToUTC(year, month - 1, day, hour, minute);
// Check if date is valid
if (isNaN(eventDate.getTime())) {
return {
valid: false,
error: 'Invalid date. Please check the date and time are correct.'
};
}
// Check if date is in the future (at least 5 minutes from now)
// Compare UTC times since eventDate is now in UTC
const nowUTC = new Date();
const minFutureTime = new Date(nowUTC.getTime() + (5 * 60 * 1000)); // 5 minutes from now
if (eventDate <= minFutureTime) {
return {
valid: false,
error: 'Event date must be at least 5 minutes in the future'
};
}
// Check if date is not too far in the future (1 year)
const maxFutureTime = new Date(nowUTC.getTime() + (365 * 24 * 60 * 60 * 1000)); // 1 year from now
if (eventDate > maxFutureTime) {
return {
valid: false,
error: 'Event date cannot be more than 1 year in the future'
};
}
return {
valid: true,
date: eventDate.toISOString()
};
} catch (error) {
return {
valid: false,
error: 'Invalid date format. Use YYYY-MM-DD HH:MM (e.g., 2024-08-25 18:00)'
};
}
}
/**
* Validate role exists and has permissions
*/
validateRole(guild, roleName, roleType = 'role') {
if (!roleName) {
return { valid: false, error: `${roleType} is required` };
}
const role = this.findRoleByName(guild, roleName);
if (!role) {
return {
valid: false,
error: `${roleType} role "${roleName}" not found in server. Please check the role name and ensure it exists.`
};
}
return { valid: true, role };
}
/**
* Find role by name (case-insensitive)
*/
findRoleByName(guild, roleName) {
if (!guild || !roleName) return null;
return guild.roles.cache.find(role =>
role.name.toLowerCase() === roleName.toLowerCase()
);
}
/**
* Validate event link if provided
*/
validateEventLink(link) {
if (!link) return { valid: true }; // Link is optional
try {
const url = new URL(link);
if (url.protocol !== 'http:' && url.protocol !== 'https:') {
return {
valid: false,
error: 'Event link must be a valid HTTP or HTTPS URL'
};
}
return { valid: true };
} catch (error) {
return {
valid: false,
error: 'Invalid URL format for event link'
};
}
}
/**
* Parse UK local time to UTC for consistent storage
*
* Converts user-entered UK local time to UTC for database storage and Discord timestamps.
* This ensures events are scheduled correctly regardless of server timezone or DST changes.
* The conversion handles BST/GMT transitions automatically using JavaScript's timezone support.
*/
parseUKTimeToUTC(year, month, day, hour, minute) {
// Create a date string in ISO format but specify it as UK timezone
const dateStr = `${year}-${(month + 1).toString().padStart(2, '0')}-${day.toString().padStart(2, '0')}T${hour.toString().padStart(2, '0')}:${minute.toString().padStart(2, '0')}:00`;
// Create date assuming the input is UTC first
const tempDate = new Date(dateStr + 'Z');
// Get UK timezone offset for this specific date (handles BST/GMT automatically)
const ukDate = new Date(tempDate.toLocaleString('en-US', { timeZone: 'Europe/London' }));
const utcDate = new Date(tempDate.toLocaleString('en-US', { timeZone: 'UTC' }));
const offset = ukDate.getTime() - utcDate.getTime();
// Subtract the offset to get the correct UTC time
return new Date(tempDate.getTime() - offset);
}
/**
* Validate event removal criteria
*/
validateRemovalCriteria(criteria) {
if (!criteria.name) {
return { valid: false, error: 'Event name is required for removal' };
}
if (!criteria.region) {
return { valid: false, error: 'Region is required for removal' };
}
if (!criteria.eventDate) {
return { valid: false, error: 'Event date is required for removal' };
}
return { valid: true };
}
}
module.exports = EventValidator; |