import { z } from 'zod';

/** HTML type=number binds number; API/store may return number — normalize to string for validation. */
function retentionMinutesInput(val: unknown): string {
	if (val === undefined || val === null) return '';
	if (typeof val === 'number') {
		if (!Number.isFinite(val)) return '';
		return String(Math.trunc(val));
	}
	return String(val);
}

const revisionRetentionMinutes = z.preprocess(
	retentionMinutesInput,
	z.string().refine(
		(v) => {
			const s = v.trim();
			if (s === '') return true;
			const ttl = Number(s);
			return /^\d+$/.test(s) && Number.isInteger(ttl) && ttl >= 15 && ttl <= 43200;
		},
		{ message: 'TTL ревизий должен быть целым числом от 15 до 43200 минут' }
	)
);

export const revisionSettingsSchema = z.object({
	revision_retention_minutes: revisionRetentionMinutes
});

export type RevisionSettingsForm = z.infer<typeof revisionSettingsSchema>;

export const emptyRevisionSettingsForm = (): RevisionSettingsForm => ({
	revision_retention_minutes: ''
});