subtracks/app/src/main/kotlin/com/subtracks/ui/settings/AddSourceScreen.kt

package com.subtracks.ui.settings

import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ExperimentalLayoutApi
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.imePadding
import androidx.compose.foundation.layout.navigationBarsPadding
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.foundation.verticalScroll
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.automirrored.rounded.ArrowBack
import androidx.compose.material3.Button
import androidx.compose.material3.CircularProgressIndicator
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.OutlinedButton
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Switch
import androidx.compose.material3.SwitchDefaults
import androidx.compose.material3.Text
import androidx.compose.material3.TopAppBar
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.text.input.PasswordVisualTransformation
import androidx.compose.ui.unit.dp
import androidx.lifecycle.compose.collectAsStateWithLifecycle
import org.koin.compose.viewmodel.koinViewModel

@Composable
fun AddSourceRoute(
    onSaved: () -> Unit,
    onBack: (() -> Unit)?,
    viewModel: AddSourceViewModel = koinViewModel(),
) {
    val state by viewModel.state.collectAsStateWithLifecycle()
    AddSourceScreen(
        state = state,
        onNameChange = viewModel::setName,
        onAddressChange = viewModel::setAddress,
        onUsernameChange = viewModel::setUsername,
        onPasswordChange = viewModel::setPassword,
        onTokenAuthChange = viewModel::setTokenAuth,
        onTest = viewModel::testConnection,
        onSave = { viewModel.save(onSaved) },
        onBack = onBack,
    )
}

@OptIn(ExperimentalMaterial3Api::class, ExperimentalLayoutApi::class)
@Composable
fun AddSourceScreen(
    state: AddSourceState,
    onNameChange: (String) -> Unit,
    onAddressChange: (String) -> Unit,
    onUsernameChange: (String) -> Unit,
    onPasswordChange: (String) -> Unit,
    onTokenAuthChange: (Boolean) -> Unit,
    onTest: () -> Unit,
    onSave: () -> Unit,
    onBack: (() -> Unit)?,
    modifier: Modifier = Modifier,
) {
    Scaffold(
        modifier = modifier,
        topBar = {
            TopAppBar(
                title = { Text("Add server") },
                navigationIcon = {
                    if (onBack != null) {
                        IconButton(onClick = onBack) {
                            Icon(Icons.AutoMirrored.Rounded.ArrowBack, contentDescription = "Back")
                        }
                    }
                },
            )
        },
        bottomBar = {
            Row(
                modifier =
                    Modifier
                        .fillMaxWidth()
                        .imePadding()
                        .navigationBarsPadding()
                        .padding(16.dp),
                horizontalArrangement = Arrangement.spacedBy(12.dp, Alignment.End),
                verticalAlignment = Alignment.CenterVertically,
            ) {
                if (state.busy) {
                    CircularProgressIndicator(modifier = Modifier.size(20.dp), strokeWidth = 2.dp)
                }
                OutlinedButton(onClick = onTest, enabled = !state.busy) {
                    Text("Test connection")
                }
                Button(onClick = onSave, enabled = !state.busy) {
                    Text("Save and sync")
                }
            }
        },
    ) { padding ->
        Column(
            modifier =
                Modifier
                    .padding(padding)
                    .fillMaxSize()
                    .verticalScroll(rememberScrollState())
                    .padding(16.dp),
            verticalArrangement = Arrangement.spacedBy(12.dp),
        ) {
            Text(
                "Connect a Subsonic-compatible server such as Navidrome, gonic or Airsonic.",
                style = MaterialTheme.typography.bodyMedium,
                color = MaterialTheme.colorScheme.onSurfaceVariant,
            )
            OutlinedTextField(
                value = state.name,
                onValueChange = onNameChange,
                label = { Text("Name") },
                singleLine = true,
                modifier = Modifier.fillMaxWidth(),
            )
            OutlinedTextField(
                value = state.address,
                onValueChange = onAddressChange,
                label = { Text("Server address") },
                placeholder = { Text("https://music.example.com") },
                singleLine = true,
                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Uri),
                modifier = Modifier.fillMaxWidth(),
            )
            OutlinedTextField(
                value = state.username,
                onValueChange = onUsernameChange,
                label = { Text("Username") },
                singleLine = true,
                modifier = Modifier.fillMaxWidth(),
            )
            OutlinedTextField(
                value = state.password,
                onValueChange = onPasswordChange,
                label = { Text("Password") },
                singleLine = true,
                visualTransformation = PasswordVisualTransformation(),
                modifier = Modifier.fillMaxWidth(),
            )
            Row(
                modifier = Modifier.fillMaxWidth().padding(vertical = 12.dp),
                verticalAlignment = Alignment.CenterVertically,
                horizontalArrangement = Arrangement.spacedBy(16.dp),
            ) {
                Column(Modifier.weight(1f)) {
                    Text("Token authentication")
                    Text(
                        "Recommended. Disable only for servers that reject the salted token scheme.",
                        style = MaterialTheme.typography.bodySmall,
                        color = MaterialTheme.colorScheme.onSurfaceVariant,
                    )
                }
                Switch(
                    checked = state.useTokenAuth,
                    onCheckedChange = onTokenAuthChange,
                    colors =
                        SwitchDefaults.colors(
                            uncheckedThumbColor = MaterialTheme.colorScheme.onSurfaceVariant,
                            uncheckedTrackColor = MaterialTheme.colorScheme.surfaceVariant,
                            uncheckedBorderColor = MaterialTheme.colorScheme.outline,
                        ),
                )
            }
            if (state.message != null) {
                Text(
                    text = state.message,
                    style = MaterialTheme.typography.bodyMedium,
                    color = if (state.isError) MaterialTheme.colorScheme.error else MaterialTheme.colorScheme.primary,
                )
            }
        }
    }
}