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* EventCommandHandler - Handles all event-related Discord commands
*
* Manages the community event system including creation, deletion, listing, and bulk operations.
* Integrates with the EventManager for business logic and provides user-friendly Discord interfaces.
*
* Design rationale:
* - Unified interface: Both members and moderators can use most event commands to encourage participation
* - Permission layers: Destructive operations (remove, clear) require moderator privileges
* - Rich formatting: Event listings and responses use Discord embeds and formatting for better UX
* - Input validation: All user inputs are validated before processing to prevent errors and abuse
* - Notification integration: Events automatically notify relevant regional/location channels
*/
class EventCommandHandler {
constructor(bot) {
this.bot = bot;
}
async handleModeratorCommand(message, member, content) {
if (content.startsWith('!addevent ')) {
await this.handleAddEvent(message, content.substring(10));
} else if (content.startsWith('!quietaddevent ')) {
await this.handleAddEvent(message, content.substring(15), true);
} else if (content.startsWith('!removeevent ')) {
await this.handleRemoveEvent(message, content.substring(13));
} else Iif (content === '!events') {
await this.handleListEvents(message);
} else Iif (content.startsWith('!events ')) {
await this.handleListEventsByLocation(message, content.substring(8));
} else Iif (content === '!clearevents') {
await this.handleClearEvents(message);
}
}
async handleMemberCommand(message, member, content) {
if (content.startsWith('!addevent ')) {
await this.handleAddEvent(message, content.substring(10));
} else if (content.startsWith('!removeevent ')) {
await this.handleRemoveEvent(message, content.substring(13));
} else if (content === '!events') {
await this.handleListEvents(message);
} else if (content.startsWith('!events ')) {
await this.handleListEventsByLocation(message, content.substring(8));
} else if (content === '!clearevents') {
await this.handleClearEvents(message);
}
}
async handleAddEvent(message, eventArgs, quiet = false) {
try {
// Parse command arguments: !addevent @RegionRole @LocationRole <name> | <date> | <link>
// Format: !addevent @London @CentralLondon "Community Meeting" | 2024-08-25 18:00 | https://example.com/event
if (!eventArgs.trim()) {
await message.reply('❌ **Event command format:**\n`!addevent @RegionRole @LocationRole "Event Name" | YYYY-MM-DD HH:MM | <link>`\n\n**Examples:**\n`!addevent @London @CentralLondon "Community Meeting" | 2024-08-25 18:00 | https://facebook.com/events/123`\n`!addevent @Wales @Cardiff "Rally" | 2024-08-30 14:00 | https://eventbrite.com/tickets/456`\n\n**Notes:**\n- Use @LocationRole for town/city, or omit if region-wide\n- Link is optional but recommended\n- Roles must exist in the server');
return;
}
// Split by pipes to get main parts
const parts = eventArgs.split('|').map(part => part.trim());
if (parts.length < 2) {
await message.reply('❌ **Invalid format.** Use: `!addevent @RegionRole @LocationRole "Event Name" | YYYY-MM-DD HH:MM | <link>`');
return;
}
const eventDetailsStr = parts[0];
const dateStr = parts[1];
const eventLink = parts[2] || '';
// Parse role mentions and event name
const roleMentions = eventDetailsStr.match(/<@&(\d+)>/g) || [];
if (roleMentions.length === 0) {
await message.reply('❌ **Missing role mentions.** You must mention at least one region role.\n\n**Format:** `@RegionRole @LocationRole "Event Name"`\n**Example:** `@London @CentralLondon "Community Meeting"`');
return;
}
// Extract event name (everything after the last role mention)
const nameMatch = eventDetailsStr.match(/.*>[\s]*(.+)$/);
if (!nameMatch) {
await message.reply('❌ **Missing event name.** Add the event name after the role mentions.\n\n**Example:** `@London @CentralLondon "Community Meeting"`');
return;
}
const eventName = nameMatch[1].replace(/^["']|["']$/g, '').trim();
if (!eventName) {
await message.reply('❌ **Event name cannot be empty.**');
return;
}
// Validate and resolve roles
const guild = message.guild;
const mentionedRoles = roleMentions.map(mention => {
const roleId = mention.match(/<@&(\d+)>/)[1];
return guild.roles.cache.get(roleId);
}).filter(role => role !== undefined);
if (mentionedRoles.length !== roleMentions.length) {
await message.reply('❌ **Some mentioned roles do not exist in this server.** Please use valid role mentions.');
return;
}
// Determine region and location from roles
// First role is treated as region, second (if exists) as location
const regionRole = mentionedRoles[0];
const locationRole = mentionedRoles.length > 1 ? mentionedRoles[1] : null;
// Validate date format
const dateRegex = /^\d{4}-\d{2}-\d{2}\s+\d{1,2}:\d{2}$/;
if (!dateRegex.test(dateStr)) {
await message.reply('❌ **Invalid date format.** Use: `YYYY-MM-DD HH:MM`\n\n**Example:** `2024-08-25 18:00`');
return;
}
// Validate link if provided
if (eventLink && !this.isValidUrl(eventLink)) {
await message.reply('❌ **Invalid link format.** Please provide a valid URL starting with http:// or https://\n\n**Example:** `https://facebook.com/events/123456`');
return;
}
// Create event object
const eventData = {
name: eventName,
region: regionRole.name,
location: locationRole ? locationRole.name : null,
eventDate: dateStr.trim(),
link: eventLink || null
};
// Create event using EventManager with role objects
const eventManager = this.bot.getEventManager();
const event = await eventManager.createEvent(message.guild.id, eventData, message.author, regionRole, locationRole, quiet);
const notificationText = quiet
? `🤫 Event created quietly - no notifications sent.`
: `🎉 Notifications have been sent to the appropriate channels!`;
await message.reply(`✅ **Event created successfully!**\n\n**${event.name}**\n📅 **Date:** ${dateStr}\n📍 **Region:** ${regionRole} ${locationRole ? `\n🏘️ **Location:** ${locationRole}` : ''}${event.link ? `\n🔗 **Link:** <${event.link}>` : ''}\n\n${notificationText}\n\n💡 **To remove this event later:** \`!removeevent ${regionRole} ${locationRole ? `${locationRole} ` : ''}"${event.name}" | ${dateStr}\``);
} catch (error) {
console.error('Error handling add event command:', error);
// Provide specific error messages for common issues
if (error.message.includes('Region role')) {
await message.reply(`❌ **Region validation error:** ${error.message}`);
} else if (error.message.includes('Location role')) {
await message.reply(`❌ **Location validation error:** ${error.message}`);
} else if (error.message.includes('date')) {
await message.reply('❌ **Date error.** Make sure the date is in the future and uses format `YYYY-MM-DD HH:MM`');
} else {
await message.reply('❌ An error occurred while creating the event. Please check the command format and try again.');
}
}
}
async handleRemoveEvent(message, eventArgs) {
try {
if (!eventArgs.trim()) {
await message.reply('❌ **Event remove command format:**\n`!removeevent @RegionRole @LocationRole "Event Name" | YYYY-MM-DD HH:MM`\n\n**Examples:**\n`!removeevent @London @CentralLondon "Community Meeting" | 2024-08-25 18:00`\n`!removeevent @Wales @Cardiff "Rally" | 2024-08-30 14:00`\n\n**Notes:**\n- Use same format as when you created the event\n- @LocationRole is optional if event is region-wide\n- Must match exactly (including date and time)');
return;
}
// Parse arguments using same logic as handleAddEvent
const parts = eventArgs.split('|').map(part => part.trim());
if (parts.length < 2) {
await message.reply('❌ **Invalid format.** Use pipe `|` to separate event details from date.\n\n**Format:** `@RegionRole @LocationRole "Event Name" | YYYY-MM-DD HH:MM`');
return;
}
const eventDetailsStr = parts[0];
const dateStr = parts[1];
// Parse role mentions and event name
const roleMentions = eventDetailsStr.match(/<@&(\d+)>/g) || [];
if (roleMentions.length === 0) {
await message.reply('❌ **Missing role mentions.** You must mention at least one region role.\n\n**Format:** `@RegionRole @LocationRole "Event Name"`');
return;
}
const nameMatch = eventDetailsStr.match(/.*>[\s]*(.+)$/);
if (!nameMatch) {
await message.reply('❌ **Missing event name.** Add the event name after the role mentions.');
return;
}
const eventName = nameMatch[1].replace(/^["']|["']$/g, '').trim();
if (!eventName) {
await message.reply('❌ **Event name cannot be empty.**');
return;
}
// Validate and resolve roles
const guild = message.guild;
const mentionedRoles = roleMentions.map(mention => {
const roleId = mention.match(/<@&(\d+)>/)[1];
return guild.roles.cache.get(roleId);
}).filter(role => role !== undefined);
if (mentionedRoles.length !== roleMentions.length) {
await message.reply('❌ **Some mentioned roles do not exist in this server.** Please use valid role mentions.');
return;
}
const regionRole = mentionedRoles[0];
const locationRole = mentionedRoles.length > 1 ? mentionedRoles[1] : null;
// Validate date format
const dateRegex = /^\d{4}-\d{2}-\d{2}\s+\d{1,2}:\d{2}$/;
if (!dateRegex.test(dateStr)) {
await message.reply('❌ **Invalid date format.** Use: `YYYY-MM-DD HH:MM`');
return;
}
// Create event search criteria
const eventCriteria = {
name: eventName,
region: regionRole.name,
location: locationRole ? locationRole.name : null,
eventDate: dateStr.trim()
};
// Remove event using EventManager
const eventManager = this.bot.getEventManager();
const result = await eventManager.removeEvent(message.guild.id, eventCriteria, message.author);
if (result.success) {
await message.reply(`✅ **Event removed successfully!**\n\n**${eventName}**\n📅 **Date:** ${dateStr}\n📍 **Region:** ${regionRole.name}${locationRole ? `\n🏘️ **Location:** ${locationRole.name}` : ''}\n\n🗑️ Event notifications have been sent to notify affected users.`);
} else {
await message.reply(`❌ **Could not find event to remove.**\n\n**Searched for:**\n- **Name:** ${eventName}\n- **Region:** ${regionRole.name}${locationRole ? `\n- **Location:** ${locationRole.name}` : ''}\n- **Date:** ${dateStr}\n\n💡 **Tip:** Make sure the details match exactly as when the event was created. Use \`!events\` to see existing events.`);
}
} catch (error) {
console.error('Error handling remove event command:', error);
await message.reply('❌ An error occurred while removing the event. Please try again.');
}
}
async handleListEvents(message) {
try {
const eventManager = this.bot.getEventManager();
const events = await eventManager.getAllUpcomingEvents(message.guild.id);
if (!events || events.length === 0) {
await message.reply('📅 **No upcoming events scheduled.**\n\n💡 Use `!addevent` to create new events!');
return;
}
let eventsDisplay = `📅 **Upcoming Events** (${events.length}):\n\n`;
events.forEach((event, index) => {
const eventDate = new Date(event.event_date);
const formattedDate = eventDate.toLocaleString('en-GB', {
weekday: 'long',
year: 'numeric',
month: 'long',
day: 'numeric',
hour: '2-digit',
minute: '2-digit',
timeZone: 'Europe/London'
});
eventsDisplay += `**${index + 1}.** 🎪 **${event.name}**\n`;
eventsDisplay += ` 📅 ${formattedDate}\n`;
eventsDisplay += ` 📍 ${event.region}${event.location ? ` - ${event.location}` : ''}\n`;
if (event.link) {
eventsDisplay += ` 🔗 <${event.link}>\n`;
}
eventsDisplay += ` 👤 Created by: <@${event.created_by}>\n\n`;
});
eventsDisplay += `💡 **Use \`!events @LocationRole\` to see events for a specific location**`;
await message.reply(eventsDisplay);
} catch (error) {
console.error('Error listing events:', error);
await message.reply('❌ An error occurred while retrieving events.');
}
}
async handleListEventsByLocation(message, locationArgs) {
try {
const locationArgs_clean = locationArgs.trim();
// Parse role mention from location argument
const roleMatch = locationArgs_clean.match(/<@&(\d+)>/);
if (!roleMatch) {
await message.reply('❌ **Please mention a location role.** \n\n**Format:** `!events @LocationRole`\n**Example:** `!events @London`');
return;
}
const roleId = roleMatch[1];
const guild = message.guild;
const locationRole = guild.roles.cache.get(roleId);
if (!locationRole) {
await message.reply('❌ **Location role not found.** Please use a valid role mention.');
return;
}
const eventManager = this.bot.getEventManager();
const events = await eventManager.getUpcomingEventsByLocation(message.guild.id, locationRole.name);
if (!events || events.length === 0) {
await message.reply(`📅 **No upcoming events found for ${locationRole.name}.**\n\n💡 Use \`!addevent\` to create new events!`);
return;
}
let eventsDisplay = `📅 **Upcoming Events in ${locationRole.name}** (${events.length}):\n\n`;
events.forEach((event, index) => {
const eventDate = new Date(event.event_date);
const formattedDate = eventDate.toLocaleString('en-GB', {
weekday: 'long',
year: 'numeric',
month: 'long',
day: 'numeric',
hour: '2-digit',
minute: '2-digit',
timeZone: 'Europe/London'
});
eventsDisplay += `**${index + 1}.** 🎪 **${event.name}**\n`;
eventsDisplay += ` 📅 ${formattedDate}\n`;
eventsDisplay += ` 📍 ${event.region}${event.location ? ` - ${event.location}` : ''}\n`;
Eif (event.link) {
eventsDisplay += ` 🔗 <${event.link}>\n`;
}
eventsDisplay += ` 👤 Created by: <@${event.created_by}>\n\n`;
});
eventsDisplay += `💡 **Use \`!events\` to see all upcoming events**`;
await message.reply(eventsDisplay);
} catch (error) {
console.error('Error listing events by location:', error);
await message.reply('❌ An error occurred while retrieving events for the specified location.');
}
}
async handleClearEvents(message) {
try {
const eventManager = this.bot.getEventManager();
const events = await eventManager.getAllUpcomingEvents(message.guild.id);
if (!events || events.length === 0) {
await message.reply('📅 **No upcoming events to clear.**');
return;
}
// Only moderators can clear events
const member = message.guild.members.cache.get(message.author.id);
const isModerator = this.bot.getUserValidator().canUseModerator(member, this.bot.getModeratorRoleId());
if (!isModerator) {
await message.reply('❌ **Only moderators can clear all events.** Use `!removeevent` to remove specific events.');
return;
}
const clearedCount = await eventManager.clearAllEvents(message.guild.id, message.author);
if (clearedCount > 0) {
await message.reply(`✅ **Successfully cleared ${clearedCount} upcoming event${clearedCount !== 1 ? 's' : ''}.**\n\n🗑️ All affected users have been notified of the cancellations.`);
} else {
await message.reply('📅 **No events were cleared.** There may have been an error or the events were already removed.');
}
} catch (error) {
console.error('Error clearing events:', error);
await message.reply('❌ An error occurred while clearing events.');
}
}
// Utility methods
isValidUrl(string) {
try {
const url = new URL(string);
return url.protocol === 'http:' || url.protocol === 'https:';
} catch (_) {
return false;
}
}
}
module.exports = EventCommandHandler; |