<?php

namespace MintyPHP\Module\Helpdesk\Service;

use MintyPHP\Http\SessionStoreInterface;

final class DebitorCacheControl
{
    public const TTL_STANDARD_SECONDS = 300;
    public const TTL_ESCALATION_DEFINITIONS_SECONDS = 1800;

    private const REFRESH_TRUE_VALUES = ['1', 'true', 'yes'];

    private function __construct()
    {
    }

    /**
     * @param mixed $value
     */
    public static function parseRefreshFlag(mixed $value): bool
    {
        if (is_bool($value)) {
            return $value;
        }

        $normalized = strtolower(trim((string) ($value ?? '')));
        if ($normalized === '') {
            return false;
        }

        return in_array($normalized, self::REFRESH_TRUE_VALUES, true);
    }

    /**
     * @param array<string, mixed> $session
     */
    public static function resolveTenantScope(array $session): string
    {
        $tenantId = (int) (($session['current_tenant']['id'] ?? 0));

        return $tenantId > 0 ? (string) $tenantId : 'global';
    }

    public static function ticketsKey(string $tenantScope, string $customerNo): string
    {
        return 'module.helpdesk.debitor.v2.tickets.' . $tenantScope . '.' . trim($customerNo);
    }

    public static function contactsKey(string $tenantScope, string $customerNo): string
    {
        return 'module.helpdesk.debitor.v2.contacts.' . $tenantScope . '.' . trim($customerNo);
    }

    public static function communicationKey(string $tenantScope, string $customerNo): string
    {
        return 'module.helpdesk.debitor.v2.communication.' . $tenantScope . '.' . trim($customerNo);
    }

    public static function escalationKey(string $tenantScope, string $customerNo): string
    {
        return 'module.helpdesk.debitor.v2.escalation.' . $tenantScope . '.' . trim($customerNo);
    }

    public static function contractsKey(string $tenantScope, string $customerNo): string
    {
        return 'module.helpdesk.debitor.v2.contracts.' . $tenantScope . '.' . trim($customerNo);
    }

    public static function contractLinesKey(string $tenantScope, string $customerNo): string
    {
        return 'module.helpdesk.debitor.v2.contract-lines.' . $tenantScope . '.' . trim($customerNo);
    }

    public static function controllingTicketsKey(string $tenantScope, string $customerNo): string
    {
        return 'module.helpdesk.debitor.v2.controlling-tickets.' . $tenantScope . '.' . trim($customerNo);
    }

    public static function escalationDefinitionsKey(string $tenantScope): string
    {
        return 'module.helpdesk.debitor.v1.escalation-definitions.' . $tenantScope;
    }

    /**
     * @return array<int, string>
     */
    public static function allDebitorCacheKeys(string $tenantScope, string $customerNo): array
    {
        return [
            self::ticketsKey($tenantScope, $customerNo),
            self::contactsKey($tenantScope, $customerNo),
            self::communicationKey($tenantScope, $customerNo),
            self::escalationKey($tenantScope, $customerNo),
            self::contractsKey($tenantScope, $customerNo),
            self::contractLinesKey($tenantScope, $customerNo),
            self::controllingTicketsKey($tenantScope, $customerNo),
            // Legacy keys kept for hard refresh compatibility
            'module.helpdesk.tickets_cache.' . $tenantScope . '.' . trim($customerNo),
            'module.helpdesk.contacts_cache.v1.' . $tenantScope . '.' . trim($customerNo),
            'module.helpdesk.debitor_comm_cache.v3.' . $tenantScope . '.' . trim($customerNo),
            'module.helpdesk.escalation_cache.v1.' . $tenantScope . '.' . trim($customerNo),
            'module.helpdesk.contracts_cache.v2.' . $tenantScope . '.' . trim($customerNo),
        ];
    }

    public static function invalidateDebitorCaches(
        SessionStoreInterface $sessionStore,
        string $tenantScope,
        string $customerNo,
        bool $includeTenantShared = true
    ): void {
        foreach (self::allDebitorCacheKeys($tenantScope, $customerNo) as $key) {
            $sessionStore->remove($key);
        }

        if ($includeTenantShared) {
            $sessionStore->remove(self::escalationDefinitionsKey($tenantScope));
        }
    }
}