/*
 * Copyright (c) 2026 QPQ IaaS AG <info@qpq.swiss>. All rights reserved.
 * Project: Gajumaru Core Java Libraries <gajumaru.io>
 *
 * This program is dual-licensed:
 * 1) Under the GNU Affero General Public License as published by the Free
 *    Software Foundation, either version 3 of the License, or (at your option)
 *    any later version (AGPL-3.0-or-later).
 *
 * 2) Under a commercial/proprietary license available directly from QPQ IaaS AG.
 *    If you wish to use this software outside the strict constraints of the
 *    AGPLv3 (e.g. within a closed-source or proprietary product), you must
 *    purchase a commercial license from QPQ IaaS AG.
 *
 * Authors:
 *   - Craig Everett <craigeverett@qpq.swiss>
 *
 * SPDX-License-Identifier: AGPL-3.0-or-later OR LicenseRef-QPQ-Commercial
 */

package swiss.qpq.gajumobile.security

import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.asStateFlow

object SecurityManager {
    private val _isLocked = MutableStateFlow(true)
    val isLocked = _isLocked.asStateFlow()

    private var lastBackgroundTime: Long = 0
    private const val LOCK_TIMEOUT_MS = 2 * 60 * 1000L // 2 minutes

    fun lock() {
        _isLocked.value = true
    }

    fun unlock() {
        _isLocked.value = false
    }

    fun onAppBackgrounded() {
        lastBackgroundTime = System.currentTimeMillis()
    }

    fun onAppForegrounded() {
        if (lastBackgroundTime != 0L && System.currentTimeMillis() - lastBackgroundTime > LOCK_TIMEOUT_MS) {
            lock()
        }
        // Reset background time after checking
        lastBackgroundTime = 0
    }
}