<?php

namespace App\Utilities\Polices;

use App\Documents\PolicyDocument;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Http\Response;

class BasePolicy
{
    use PolicyConditions;

    public function __construct(PolicyDocument|null $policy = null, Model|null $model = null)
    {
        $this->policy = $policy;
        $this->model = $model;
    }

    public static function allow(PolicyDocument $policy, Model|null $model = null)
    {
        (new static($policy, $model))->applyCheck();
    }

    public static function when(PolicyDocument $policy, Model|null $model = null): bool
    {
        return (new static($policy, $model))->applyCheck(false);
    }

    public function applyCheck($throwException = true): bool
    {
        $pass = false;

        foreach ($this->policy?->needs ?? [] as $condition) {
            $pass = $this->checkCondition($condition);
            if ($pass) break;
        }

        if (!$pass && $throwException) {
            abort(Response::HTTP_FORBIDDEN, 'this action is forbidden.');
        }
        return $pass;
    }

    public function checkCondition($conditions): bool
    {
        $conditionsMatch = true;
        foreach ($conditions as $condition) {
            [$function, $param] = str_contains($condition, ":") ? explode(':', $condition) : [$condition, null];

            $conditionsMatch = $conditionsMatch &&
                call_user_func_array([static::class, $function], (empty($param) ? [] : [$param]));

            if (!$conditionsMatch) break;
        }

        return $conditionsMatch;
    }
}