🚦 UniFi Relay | Remap UniFi Network alert events & forward them to Discord

worker.ts

export default {
	fetch: async (request, env) => {
		if (request.method !== 'POST')
			return new Response('Method Not Allowed', { status: 405 });

		const json = await request
			.json<{
				alarm_id: string;
				events: Array<{
					alert_id: string;
					alert_key: string;
					id: string;
					scope: {
						site_id: string;
					};
				}>;
			}>()
			.catch(() => null);
		if (!json || typeof json !== 'object')
			return new Response('Bad Request', { status: 400 });

		const events = Array.isArray(json.events) ? json.events : null;
		if (!events) return new Response('Bad Request', { status: 400 });

		try {
			const discordResponse = await fetch(env.DISCORD_WEBHOOK_URL, {
				body: JSON.stringify({
					embeds: events.map((event) => ({
						title: 'UniFi Network Alert',
						color: 0x4797ff,
						fields: [
							{
								name: 'Alert Key',
								value: event.alert_key,
								inline: false,
							},
							{
								name: 'Alert ID',
								value: event.alert_id,
								inline: false,
							},
							{
								name: 'ID',
								value: event.id,
								inline: false,
							},
						],
						footer: {
							text: 'UniFi',
							icon_url:
								'https://pbs.twimg.com/profile_images/1610157462321254402/tMCv8T-y_400x400.png',
						},
						timestamp: new Date().toISOString(),
					})),
				}),
				headers: {
					'Content-Type': 'application/json',
				},
				method: 'POST',
			});
			if (!discordResponse.ok) throw discordResponse;

			return Response.json(
				{
					data: null,
					error: null,
				},
				{
					status: 200,
				},
			);
		} catch (error) {
			console.error('Error sending to Discord:', error);
			return Response.json(
				{
					data: null,
					error: {
						message: 'Failed to send alert to Discord',
					},
				},
				{
					status: 500,
				},
			);
		}
	},
} satisfies ExportedHandler<Env>;

wrangler.jsonc

{
	"$schema": "node_modules/wrangler/config-schema.json",
	"name": "unifi-relay",
	"main": "src/index.ts",
	"compatibility_date": "2025-10-01",
	"observability": {
		"enabled": true,
		"logs": {
			"enabled": true
		}
	},
	"vars": {
		"DISCORD_WEBHOOK_URL": "YOUR_DISCORD_WEBHOOK_URL"
	}
}