/*
 * 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.ui.screens

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.safeDrawingPadding
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import swiss.qpq.gajumobile.ui.components.GajuButton
import swiss.qpq.gajumobile.ui.components.GajuHeader
import swiss.qpq.gajumobile.ui.components.MnemonicReveal

@Composable
fun ViewMnemonicScreen(
    label: String,
    phrase: Array<ByteArray>,
    onBack: () -> Unit
) {
    val mnemonicString = remember(phrase) {
        phrase.joinToString(" ") { String(it, Charsets.UTF_8) }
    }

    Column(
        modifier = Modifier.fillMaxSize().padding(24.dp).safeDrawingPadding(),
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
        GajuHeader()
        Text(
            text = "BACKUP ACCOUNT",
            style = MaterialTheme.typography.headlineMedium,
            color = MaterialTheme.colorScheme.onBackground
        )
        Spacer(modifier = Modifier.height(8.dp))
        Text(
            text = label.uppercase(),
            style = MaterialTheme.typography.labelLarge,
            color = MaterialTheme.colorScheme.primary
        )
        
        Spacer(modifier = Modifier.height(32.dp))
        
        MnemonicReveal(mnemonic = mnemonicString)
        
        Spacer(modifier = Modifier.height(24.dp))
        
        Text(
            text = "Write these words down in order and store them in a secure, offline location. This is the only way to recover your funds if you lose your phone.",
            style = MaterialTheme.typography.bodySmall,
            color = MaterialTheme.colorScheme.onSurfaceVariant
        )
        
        Spacer(modifier = Modifier.weight(1f))
        
        GajuButton(
            text = "DONE",
            onClick = onBack
        )
    }
}
