<?php

namespace App\Support;

class SupportApiRegistry
{
    /**
     * @return array<string, array<string, mixed>>
     */
    public static function resources(): array
    {
        return config('support-api.resources', []);
    }

    /**
     * @return array<string, mixed>|null
     */
    public static function get(string $resource): ?array
    {
        $resources = self::resources();

        return $resources[$resource] ?? null;
    }

    public static function validationClass(string $resource, string $action): ?string
    {
        $config = self::get($resource);

        if (! $config) {
            return null;
        }

        $validation = $config['validation'][$action] ?? null;

        return is_string($validation) ? $validation : null;
    }

    /**
     * @return array<int, string>
     */
    public static function resourceKeys(): array
    {
        return array_keys(self::resources());
    }

    public static function resourcePattern(): string
    {
        $keys = self::resourceKeys();

        if ($keys === []) {
            return '.*';
        }

        $escaped = array_map(static fn (string $key): string => preg_quote($key, '/'), $keys);

        return implode('|', $escaped);
    }

    /**
     * @return array<int, string>
     */
    public static function abilitiesFor(string $resource, string $action): array
    {
        $config = self::get($resource);

        if (! $config) {
            return [];
        }

        $abilities = $config['abilities'][$action] ?? null;

        if (is_array($abilities) && $abilities !== []) {
            return $abilities;
        }

        return match ($action) {
            'read' => ['support:read'],
            'write' => ['support:write'],
            'actions' => ['support:actions'],
            default => [],
        };
    }

    public static function isReadOnly(string $resource): bool
    {
        $config = self::get($resource);

        return (bool) ($config['read_only'] ?? false);
    }

    public static function auditAction(string $resource, string $operation): string
    {
        $config = self::get($resource);

        $action = null;

        if ($config && is_array($config['audit'] ?? null)) {
            $action = $config['audit'][$operation] ?? null;
        }

        if (is_string($action) && $action !== '') {
            return $action;
        }

        return $resource.'.'.$operation;
    }

    public static function allowsMutation(string $resource, string $action): bool
    {
        if (self::isReadOnly($resource)) {
            return false;
        }

        $config = self::get($resource);

        $mutations = $config['mutations'] ?? null;

        if (! is_array($mutations)) {
            return true;
        }

        return (bool) ($mutations[$action] ?? false);
    }

    /**
     * @return array<int, string>
     */
    public static function searchFields(string $resource): array
    {
        $config = self::get($resource);

        $fields = $config['search'] ?? [];

        return is_array($fields) ? $fields : [];
    }

    /**
     * @return array<int, string>
     */
    public static function withRelations(string $resource): array
    {
        $config = self::get($resource);

        $relations = $config['with'] ?? [];

        return is_array($relations) ? $relations : [];
    }
}