// ─────────────────────────────────────────────
// Type guards de primitivos
// ─────────────────────────────────────────────

import type {CurrencyValue, MediaRef, MetadataField, MetadataFieldType} from "@/mtas/lib/types.ts";

export function isCurrencyValue(v: unknown): v is CurrencyValue {
    if (typeof v !== 'object' || v === null) return false;
    const c = v as Record<string, unknown>;
    return typeof c['amount'] === 'number' && typeof c['currency'] === 'string' && c['currency'].length > 0;
}

export function isMediaRef(v: unknown): v is MediaRef {
    if (typeof v !== 'object' || v === null) return false;
    const m = v as Record<string, unknown>;
    return typeof m['url'] === 'string' && m['url'].length > 0;
}



export function isValidUrl(value: string): boolean {
    try { new URL(value); return true; } catch { return false; }
}

const KNOWN_TYPES: MetadataFieldType[] = [
    'string','number','boolean','ling','date','datetime',
    'url','currency','image','video','audio','pdf','file','group',
];



export function isMetadataField(v: unknown): v is MetadataField {
    if (typeof v !== 'object' || v === null) return false;
    const f = v as Record<string, unknown>;
    return KNOWN_TYPES.includes(f['type'] as MetadataFieldType);
}