package dev.lonami.talaria.ui

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.material.Card
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.lifecycle.viewmodel.compose.viewModel
import dev.lonami.talaria.model.Message
import dev.lonami.talaria.ui.theme.TalariaTheme

@Composable
fun MessageCard(message: Message) {
    Card(
        elevation = 4.dp,
        modifier = Modifier
            .fillMaxWidth()
            .padding(8.dp)
    ) {
        Column(
            modifier = Modifier
                .fillMaxWidth()
                .padding(8.dp)
        ) {
            Text(message.sender, fontWeight = FontWeight.Bold)
            Text(message.text)
        }
    }
}

@Composable
fun MessageList(messages: List<Message>) {
    LazyColumn {
        items(messages.size) { MessageCard(messages[it]) }
    }
}

@Composable
fun ChatScreen(chatViewModel: ChatViewModel = viewModel()) {
    val chatUiState by chatViewModel.uiState.collectAsState()
    MessageList(chatUiState.messages)
}

@Preview
@Composable
fun ChatPreview() {
    TalariaTheme {
        ChatScreen()
    }
}