package de.waypointaudio.ui

import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.verticalScroll
import androidx.compose.material3.AlertDialog
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.material3.TextButton
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import de.waypointaudio.R

/**
 * v2.5.9 — Erstmaliger Nutzungsbedingungen-/Lizenzhinweis-Dialog.
 *
 * Versioniert über [de.waypointaudio.data.TermsVersions.CURRENT];
 * Zustimmung wird im [de.waypointaudio.data.TermsStore] persistiert.
 * Ablehnen beendet die Activity — die App lässt sich nicht ohne
 * Zustimmung verwenden.
 */
@Composable
fun TermsDialog(
    onAccept: () -> Unit,
    onDecline: () -> Unit
) {
    AlertDialog(
        onDismissRequest = { /* keine versehentliche Dismiss-Aktion */ },
        title = {
            Text(
                text = stringResource(R.string.terms_dialog_title),
                style = MaterialTheme.typography.headlineSmall
            )
        },
        text = {
            Column(
                modifier = Modifier
                    .fillMaxWidth()
                    .verticalScroll(rememberScrollState())
                    .padding(vertical = 4.dp),
                verticalArrangement = Arrangement.spacedBy(10.dp)
            ) {
                Text(
                    text = stringResource(R.string.terms_dialog_intro),
                    style = MaterialTheme.typography.bodyMedium
                )

                Text(
                    text = stringResource(R.string.terms_dialog_license_heading),
                    style = MaterialTheme.typography.titleSmall,
                    fontWeight = FontWeight.SemiBold
                )
                Text(
                    text = stringResource(R.string.terms_dialog_license_body),
                    style = MaterialTheme.typography.bodySmall
                )

                Text(
                    text = stringResource(R.string.terms_dialog_commercial_heading),
                    style = MaterialTheme.typography.titleSmall,
                    fontWeight = FontWeight.SemiBold
                )
                Text(
                    text = stringResource(R.string.terms_dialog_commercial_body),
                    style = MaterialTheme.typography.bodySmall
                )

                Text(
                    text = stringResource(R.string.terms_dialog_liability_heading),
                    style = MaterialTheme.typography.titleSmall,
                    fontWeight = FontWeight.SemiBold
                )
                Text(
                    text = stringResource(R.string.terms_dialog_liability_body),
                    style = MaterialTheme.typography.bodySmall
                )

                Text(
                    text = stringResource(R.string.terms_dialog_version_label),
                    style = MaterialTheme.typography.labelSmall,
                    color = MaterialTheme.colorScheme.onSurface.copy(alpha = 0.6f)
                )
            }
        },
        confirmButton = {
            TextButton(onClick = onAccept) {
                Text(stringResource(R.string.terms_dialog_accept))
            }
        },
        dismissButton = {
            TextButton(onClick = onDecline) {
                Text(stringResource(R.string.terms_dialog_decline))
            }
        }
    )
}