import { get } from "svelte/store";
import { permission as currentPermissions } from "$lib/core/stores/permissions";



const splitPermCache = new Map<string, string[]>();
function splitPerm(p: string): string[]{
    if(!splitPermCache.has(p)){
        splitPermCache.set(p, p.split("."));
    }
    return splitPermCache.get(p)!;
}

/// Check if current user has exacted permissions
export function requirePermission(...permissions: string[]): boolean {
    // let perms = get(currentPermissions);
    // let countOk = 0;
    // for(let perm of perms){
    //     if(permissions.includes(perm)){
    //         countOk += 1;
    //     }
    // }
    // return countOk > 0 && countOk == perms.length;
    const userPerms = get(currentPermissions);
    return permissions.every(req => {
        return userPerms.includes(req);
    });
}


/// Check permission of user by
export function needPermission(...permissions: string[]): boolean {
    const userPerms = get(currentPermissions).map(p => splitPerm(p));
    return permissions.every(req => {
        const reqParts = splitPerm(req);
        return userPerms.some(userParts => {
            if(userParts.length !== reqParts.length) return false;
            return reqParts.every((part, i) => part === "*" || part === userParts[i]);
        });
    });
}