add discord integration

src/lib/server/discord/client.ts

@@ -0,0 +1,92 @@
+import { env } from '$env/dynamic/private';
+import { Client, GatewayIntentBits, EmbedBuilder, type TextChannel } from 'discord.js';
+
+let client: Client | null = null;
+let ready: Promise<void> | null = null;
+
+function getDiscordClient(): Promise<Client> {
+	if (!env.DISCORD_BOT_TOKEN) {
+		throw new Error('DISCORD_BOT_TOKEN is not set');
+	}
+
+	if (client && ready) {
+		return ready.then(() => client!);
+	}
+
+	client = new Client({ intents: [GatewayIntentBits.Guilds] });
+
+	ready = new Promise<void>((resolve, reject) => {
+		client!.once('ready', () => resolve());
+		client!.once('error', reject);
+		client!.login(env.DISCORD_BOT_TOKEN).catch(reject);
+	});
+
+	return ready.then(() => client!);
+}
+
+async function getChannel(channelId: string): Promise<TextChannel> {
+	const discord = await getDiscordClient();
+	const channel = await discord.channels.fetch(channelId);
+	if (!channel || !channel.isTextBased()) {
+		throw new Error(`Discord channel ${channelId} not found or is not a text channel`);
+	}
+	return channel as TextChannel;
+}
+
+export async function notifyMatchCreated(match: {
+	id: string;
+	name: string | null;
+	participants: { team: { name: string } }[];
+	config: any;
+}) {
+	if (!env.DISCORD_BOT_TOKEN || !env.DISCORD_MATCH_CHANNEL_ID) return;
+
+	try {
+		const channel = await getChannel(env.DISCORD_MATCH_CHANNEL_ID);
+		const teams = match.participants.map((p) => p.team.name).join(' vs ');
+		const config = match.config as { bestOf?: number };
+
+		const embed = new EmbedBuilder()
+			.setTitle('Match Created')
+			.setColor(0x5865f2)
+			.addFields(
+				{ name: 'Match', value: match.name ?? match.id, inline: true },
+				{ name: 'Teams', value: teams || 'TBD', inline: true },
+				{ name: 'Format', value: config.bestOf ? `BO${config.bestOf}` : 'Unknown', inline: true }
+			)
+			.setTimestamp();
+
+		await channel.send({ embeds: [embed] });
+	} catch (err: any) {
+		console.error('[Discord] Failed to send match created notification:', err.message);
+	}
+}
+
+export async function notifyMatchFinished(match: {
+	id: string;
+	name: string | null;
+	participants: { team: { name: string }; score: number; teamId: string }[];
+	winnerId: string | null;
+}) {
+	if (!env.DISCORD_BOT_TOKEN || !env.DISCORD_MATCH_CHANNEL_ID) return;
+
+	try {
+		const channel = await getChannel(env.DISCORD_MATCH_CHANNEL_ID);
+		const winner = match.participants.find((p) => p.teamId === match.winnerId);
+		const scoreStr = match.participants.map((p) => `${p.team.name}: ${p.score}`).join(' — ');
+
+		const embed = new EmbedBuilder()
+			.setTitle('Match Finished')
+			.setColor(0x57f287)
+			.addFields(
+				{ name: 'Match', value: match.name ?? match.id, inline: true },
+				{ name: 'Winner', value: winner?.team.name ?? 'Unknown', inline: true },
+				{ name: 'Score', value: scoreStr, inline: false }
+			)
+			.setTimestamp();
+
+		await channel.send({ embeds: [embed] });
+	} catch (err: any) {
+		console.error('[Discord] Failed to send match finished notification:', err.message);
+	}
+}