package soy.iko.opencode.ui.settings

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.selection.selectable
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.automirrored.filled.ArrowBack
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.HorizontalDivider
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.RadioButton
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.material3.TopAppBar
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import androidx.lifecycle.compose.collectAsStateWithLifecycle
import kotlinx.coroutines.launch
import soy.iko.opencode.data.repo.ThemeMode
import soy.iko.opencode.di.AppContainer

@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun SettingsScreen(container: AppContainer, onBack: () -> Unit) {
    val scope = rememberCoroutineScope()
    val themeMode by container.settingsStore.themeMode.collectAsStateWithLifecycle(initialValue = ThemeMode.SYSTEM)
    val activeProfile = container.activeConnection.collectAsStateWithLifecycle().value?.profile

    Scaffold(
        topBar = {
            TopAppBar(
                title = { Text("Settings") },
                navigationIcon = {
                    IconButton(onClick = onBack) {
                        Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = "Back")
                    }
                },
            )
        },
    ) { padding ->
        Column(modifier = Modifier.padding(padding).padding(16.dp)) {
            Text("Appearance", style = MaterialTheme.typography.titleSmall, color = MaterialTheme.colorScheme.primary)
            ThemeMode.entries.forEach { mode ->
                Row(
                    mode = mode,
                    selected = themeMode == mode,
                    onSelect = { scope.launch { container.settingsStore.setThemeMode(mode) } },
                )
            }

            HorizontalDivider(modifier = Modifier.padding(vertical = 16.dp))

            Text("Connection", style = MaterialTheme.typography.titleSmall, color = MaterialTheme.colorScheme.primary)
            if (activeProfile != null) {
                Text(activeProfile.displayLabel, modifier = Modifier.padding(top = 8.dp))
                Text(
                    activeProfile.baseUrl + if (activeProfile.hasAuth) "  •  Basic auth" else "",
                    style = MaterialTheme.typography.bodySmall,
                    color = MaterialTheme.colorScheme.onSurfaceVariant,
                )
            } else {
                Text(
                    "Not connected.",
                    modifier = Modifier.padding(top = 8.dp),
                    color = MaterialTheme.colorScheme.onSurfaceVariant,
                )
            }
        }
    }
}

@Composable
private fun Row(mode: ThemeMode, selected: Boolean, onSelect: () -> Unit) {
    androidx.compose.foundation.layout.Row(
        modifier = Modifier
            .fillMaxWidth()
            .selectable(selected = selected, onClick = onSelect)
            .padding(vertical = 8.dp),
        horizontalArrangement = Arrangement.spacedBy(8.dp),
        verticalAlignment = Alignment.CenterVertically,
    ) {
        RadioButton(selected = selected, onClick = onSelect)
        Text(
            mode.name.lowercase().replaceFirstChar { it.uppercase() },
            style = MaterialTheme.typography.bodyLarge,
        )
    }
}