package com.ea.ironmonkey

import androidx.compose.animation.AnimatedVisibility
import androidx.compose.material3.AlertDialog
import androidx.compose.material3.FloatingActionButton
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Text
import androidx.compose.material3.TextButton
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import nfs.mod.mpcore.GameEventListener
import nfs.mod.mpcore.GameEvents

// See DEBUG_MENU.md for the full design. Local-only Compose state for now -
// Apply doesn't touch any game memory, no real balance getter/setter has
// been located yet (see DEBUG_MENU.md §3). Exists purely so the debug panel
// has something to edit while that RE work is pending.
object DebugMoneyState {
    var amount by mutableStateOf(0L)
        private set

    fun apply(newAmount: Long) {
        amount = newAmount
    }
}

// Same GameEventListener-as-Compose-state adapter shape as CarSelectionState
// (CarSelectionOverlay.kt) - tracks whether the map has loaded at least once
// this session, which is when the debug button should appear.
object DebugMenuVisibility : GameEventListener {
    var mapLoaded by mutableStateOf(false)
        private set

    override fun onMapLoaded() {
        mapLoaded = true
    }
}

// Call once, e.g. from GameActivityMain.onCreate, to start receiving
// onMapLoaded into DebugMenuVisibility.
fun registerDebugMenuListener() {
    GameEvents.register(DebugMenuVisibility)
}

@Composable
fun DebugMenuButton(visible: Boolean, modifier: Modifier = Modifier) {
    var dialogOpen by remember { mutableStateOf(false) }
    AnimatedVisibility(visible = visible, modifier = modifier) {
        FloatingActionButton(onClick = { dialogOpen = true }) {
            Text("DBG")
        }
    }
    if (dialogOpen) {
        DebugMoneyDialog(onDismiss = { dialogOpen = false })
    }
}

@Composable
private fun DebugMoneyDialog(onDismiss: () -> Unit) {
    var text by remember { mutableStateOf(DebugMoneyState.amount.toString()) }
    AlertDialog(
        onDismissRequest = onDismiss,
        title = { Text("Debug: Money") },
        text = {
            OutlinedTextField(
                value = text,
                onValueChange = { input -> text = input.filter(Char::isDigit) },
                label = { Text("Amount") },
                singleLine = true,
            )
        },
        confirmButton = {
            TextButton(onClick = {
                DebugMoneyState.apply(text.toLongOrNull() ?: DebugMoneyState.amount)
                onDismiss()
            }) { Text("Apply") }
        },
        dismissButton = {
            TextButton(onClick = onDismiss) { Text("Cancel") }
        },
    )
}