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path: root/frontend/src/routes/+page.ts
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import type { Service, Heartbeat } from '$lib/types';

export interface EnhancedService extends Service {
	heartbeats: Heartbeat[];
}

export interface InitialLogEntry {
	kind: 'check' | 'created' | 'deleted' | 'transition';
	serviceName: string;
	serviceUrl: string;
	timestamp: Date;
	hb?: Heartbeat;
	wasUp?: boolean;
}

export async function load({ fetch }) {
	let services: EnhancedService[] = [];
	let error = '';
	let initialLog: InitialLogEntry[] = [];

	try {
		const res = await fetch('/api/services');
		if (!res.ok) throw new Error(`HTTP ${res.status}`);
		const list: Service[] = await res.json();

		services = await Promise.all(
			list.map(async (svc) => {
				try {
					const hres = await fetch(`/api/services/${svc.id}/history`);
					if (!hres.ok) throw new Error(`HTTP ${hres.status}`);
					const json = await hres.json();
					const heartbeats: Heartbeat[] = Array.isArray(json) ? json : (json.data ?? []);
					return { ...svc, heartbeats };
				} catch {
					return { ...svc, heartbeats: [] };
				}
			})
		);

		initialLog = [];
		for (const svc of services) {
			const hbs = svc.heartbeats;
			if (hbs.length === 0) continue;
			const last = hbs[hbs.length - 1];
			initialLog.push({
				kind: 'check',
				serviceName: svc.name,
				serviceUrl: svc.url,
				timestamp: new Date(last.tested_at),
				hb: last
			});
			if (hbs.length >= 2) {
				const prev = hbs[hbs.length - 2];
				if (prev.is_up !== last.is_up) {
					initialLog.push({
						kind: 'transition',
						serviceName: svc.name,
						serviceUrl: svc.url,
						timestamp: new Date(last.tested_at),
						hb: last,
						wasUp: prev.is_up
					});
				}
			}
		}
		initialLog.sort((a, b) => b.timestamp.getTime() - a.timestamp.getTime());
		initialLog = initialLog.slice(0, 50);
	} catch (e) {
		error = 'Não foi possível conectar ao servidor';
	}

	return { services, error, initialLog };
}