import * as z from 'zod';

// Shared types and validation for /start (the owner's dashboard / new-tab page).

export const linkInput = z.object({
	title: z.string().trim().min(1, 'Give the link a title').max(80, 'Title is too long'),
	url: z
		.string()
		.trim()
		.transform((u) => (/^[a-z][a-z0-9+.-]*:/i.test(u) ? u : `https://${u}`))
		.pipe(
			z
				.string()
				.max(2000)
				.regex(/^https?:\/\/[^\s]+$/i, 'Use an http(s) URL')
		),
	section: z
		.string()
		.trim()
		.max(40)
		.transform((s) => s.toLowerCase() || 'links')
		.default('links')
});

export type Container = {
	name: string;
	image: string;
	state: string | null;
	health: string | null;
	restarts: number;
	exitCode: number | null;
	startedAt: string | null;
	cpu: string | null;
	mem: string | null;
};
export type TimerState = {
	label: string;
	unit: string;
	scope: 'user' | 'system';
	last: number | null;
	next: number | null;
	running: boolean;
	result: string | null;
	exitStatus: number;
};
export type ServiceCheck = {
	name: string;
	url: string;
	ok: boolean | null;
	code: number | null;
	ms: number | null;
};
export type HostSnapshot = {
	hostname: string;
	cpus: number;
	cpuPct: number;
	load: number[];
	uptimeS: number;
	mem: { total: number; used: number; available: number };
	swap: { total: number; used: number };
	disks: { mount: string; total: number; used: number; free: number; pct: number }[];
	containers: Container[];
	services: ServiceCheck[];
	timers: TimerState[];
	b2: Record<string, unknown> | null;
};
export type NtfyMessage = {
	id: string;
	topic: string;
	time: number;
	title: string;
	message: string;
	priority: number;
	tags: string[];
	click: string | null;
};
export type NtfySnapshot = { messages: NtfyMessage[]; topics: string[]; errors: string[] };

/** A timer's health: failed if the last run failed, late if it should have run by now. */
export function timerStatus(t: TimerState, nowS: number): 'ok' | 'fail' | 'late' | 'running' {
	if (t.running) return 'running';
	if (t.result && t.result !== 'success') return 'fail';
	if (t.next && nowS - t.next > 15 * 60) return 'late';
	return 'ok';
}

export function bytes(n: number): string {
	const u = ['B', 'KB', 'MB', 'GB', 'TB'];
	let i = 0;
	while (n >= 1024 && i < u.length - 1) {
		n /= 1024;
		i++;
	}
	return `${n >= 100 || i === 0 ? Math.round(n) : n.toFixed(1)} ${u[i]}`;
}

/** Compact relative time: "now", "5m", "3h", "2d" (past) or "in 5m" (future). */
export function ago(ms: number, now: number): string {
	const d = Math.round((now - ms) / 1000);
	const a = Math.abs(d);
	const s =
		a < 45
			? 'now'
			: a < 3600
				? `${Math.round(a / 60)}m`
				: a < 86400 * 2
					? `${Math.round(a / 3600)}h`
					: `${Math.round(a / 86400)}d`;
	if (s === 'now') return s;
	return d < 0 ? `in ${s}` : `${s} ago`;
}

export function duration(seconds: number): string {
	const d = Math.floor(seconds / 86400);
	const h = Math.floor((seconds % 86400) / 3600);
	return d ? `${d}d ${h}h` : `${h}h ${Math.floor((seconds % 3600) / 60)}m`;
}