package soy.iko.opencode.ui.chat

import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.heightIn
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.items
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.automirrored.filled.PlaylistPlay
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.Icon
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.ModalBottomSheet
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.style.TextOverflow
import androidx.compose.ui.unit.dp
import soy.iko.opencode.data.model.Command

/** Bottom sheet that lists slash-commands; selecting one invokes it. */
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun CommandPickerSheet(
    commands: List<Command>,
    onSelect: (Command) -> Unit,
    onDismiss: () -> Unit,
) {
    ModalBottomSheet(onDismissRequest = onDismiss) {
        Text(
            "Commands",
            style = MaterialTheme.typography.titleMedium,
            modifier = Modifier.padding(start = 24.dp, end = 24.dp, bottom = 8.dp),
        )
        if (commands.isEmpty()) {
            Text(
                "No commands reported by the server.",
                style = MaterialTheme.typography.bodyMedium,
                color = MaterialTheme.colorScheme.onSurfaceVariant,
                modifier = Modifier.padding(horizontal = 24.dp, vertical = 16.dp),
            )
        } else {
            LazyColumn(modifier = Modifier.fillMaxWidth().heightIn(max = 420.dp)) {
                items(commands, key = { it.name }) { cmd ->
                    Column(
                        modifier = Modifier
                            .fillMaxWidth()
                            .clickable { onSelect(cmd); onDismiss() }
                            .padding(horizontal = 24.dp, vertical = 12.dp),
                    ) {
                        androidx.compose.foundation.layout.Row(
                            verticalAlignment = androidx.compose.ui.Alignment.CenterVertically,
                        ) {
                            Icon(Icons.AutoMirrored.Filled.PlaylistPlay, contentDescription = null)
                            Text(
                                "  /${cmd.name}",
                                style = MaterialTheme.typography.bodyLarge,
                            )
                        }
                        Text(
                            cmd.displayDescription,
                            style = MaterialTheme.typography.bodySmall,
                            color = MaterialTheme.colorScheme.onSurfaceVariant,
                            maxLines = 2,
                            overflow = TextOverflow.Ellipsis,
                            modifier = Modifier.padding(start = 28.dp, top = 2.dp),
                        )
                    }
                }
            }
        }
    }
}