package ui



import network.TradingDecision
import androidx.compose.foundation.layout.*
import androidx.compose.material.*
import androidx.compose.runtime.*
// 아래 두 import가 'delegate' 에러를 해결합니다.
import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import kotlinx.coroutines.coroutineScope
import kotlinx.coroutines.launch
import model.CandleData
import network.DartCodeManager
import network.KisTradeService
import network.KisWebSocketManager
import java.time.LocalTime
import java.time.format.DateTimeFormatter
import kotlin.collections.isNotEmpty

@Composable
fun StockDetailSection(
    stockCode: String,
    stockName: String,
    holdingQuantity: String,
    isDomestic: Boolean,
    tradeService: KisTradeService,
    wsManager: KisWebSocketManager,
    onOrderSaved: (String) -> Unit,
    completeTradingDecision: TradingDecision?,
    min30 : MutableList<CandleData>,
    daySummary : MutableList<CandleData>,
    weekSummary : MutableList<CandleData>,
    monthSummary : MutableList<CandleData>,
    yearSummary : MutableList<CandleData>
) {

//    var openPrice by remember { mutableStateOf("0") }
    var chartData by remember { mutableStateOf<List<CandleData>>(emptyList()) }
    var isLoading by remember { mutableStateOf(false) }
    var resultMessage by remember { mutableStateOf("") }
    var isSuccess by remember { mutableStateOf(true) }


    val todayOpen = remember(daySummary) {
        daySummary.lastOrNull()?.stck_oprc ?: "0"
    }
    val previousClose = remember(daySummary) {
        if (daySummary.size >= 2) daySummary[daySummary.size - 2].stck_prpr else "0"
    }



    // 이전 종목 코드를 기억하기 위한 상태
    var previousCode by remember { mutableStateOf("") }
    var lastPrice by remember { mutableStateOf("0") }


    // 종목 변경 시 데이터 로드 및 웹소켓 구독 관리
    LaunchedEffect(stockCode) {
        if (stockCode.isEmpty()) return@LaunchedEffect

        isLoading = true

        // 1. 웹소켓 구독 관리: 이전 종목 해제 -> 새 종목 구독
        if (previousCode.isNotEmpty()) {
            wsManager.unsubscribeStock(previousCode)
        }
        wsManager.clearData()
        wsManager.subscribeStock(stockCode)
        previousCode = stockCode


        // 2. 차트 데이터 로드 (KisSession 기반으로 파라미터 간소화)

        coroutineScope {
            launch {
                wsManager.onPriceUpdate = {tradeLog ->


                    if (tradeLog.code.equals(stockCode)) {
                        val code = tradeLog.code
                        val price = tradeLog.price
                        wsManager.tradeLogs.add(tradeLog)
                        if (wsManager.tradeLogs.size > 50) wsManager.tradeLogs.removeLast()
//                        println("code $code ,price $price")
                        val currentPrice = price
                        if (chartData.isNotEmpty() && currentPrice != "0") {
                            val priceDouble = currentPrice.replace(",", "").toDoubleOrNull() ?: 0.0
                            val lastCandle = chartData.last()

                            // 현재 시간(분 단위) 확인
                            val currentMinute = LocalTime.now().format(DateTimeFormatter.ofPattern("HHmm00"))

                            if (lastCandle.stck_bsop_date != currentMinute) {
                                // [개선] 시간이 바뀌었으면 새로운 캔들 추가 (차트가 밀려나는 효과)
                                val newCandle = CandleData(
                                    stck_bsop_date = currentMinute,
                                    stck_oprc = currentPrice,
                                    stck_hgpr = currentPrice,
                                    stck_lwpr = currentPrice,
                                    stck_prpr = currentPrice,
                                    stck_cntg_hour = currentMinute,
                                    cntg_vol = "1",
                                    acml_tr_pbmn = "1",
                                )
                                // 최대 100개까지만 유지하여 성능 최적화
                                chartData = (chartData + newCandle).takeLast(100)
                            } else {
                                // 같은 분 내에서는 기존 마지막 캔들만 업데이트
                                val updatedCandle = lastCandle.copy(
                                    stck_prpr = currentPrice,
                                    stck_hgpr = if (priceDouble > (lastCandle.stck_hgpr.toDoubleOrNull() ?: 0.0)) currentPrice else lastCandle.stck_hgpr,
                                    stck_lwpr = if (priceDouble < (lastCandle.stck_lwpr.toDoubleOrNull() ?: Double.MAX_VALUE)) currentPrice else lastCandle.stck_lwpr
                                )
                                chartData = chartData.dropLast(1) + updatedCandle
                            }
                        }
                        lastPrice = currentPrice
                    }

                }
            }
            launch {tradeService.fetchChartData(stockCode, isDomestic)
                .onSuccess { data ->
//                    println("✅ 차트 데이터 로드 성공: ${data.size}개") // ${} 사용하여 정확히 출력
                    chartData = data
                    min30.clear()
                    min30.addAll(chartData)
                }
                .onFailure { error ->
//                    println("❌ 차트 데이터 로드 실패: ${error.localizedMessage}")
                    chartData = emptyList()
                }
            }
            launch { tradeService.fetchPeriodChartData(stockCode, "D").onSuccess {
                daySummary.clear()
                daySummary.addAll(it)
            }
            } // 최근 7일
            launch { tradeService.fetchPeriodChartData(stockCode, "W").onSuccess {
                weekSummary.clear()
                weekSummary.addAll(it.takeLast(4))
//                println("weekSummary ${weekSummary.size} total: ${it.size} ${it.firstOrNull()?.toString()}")
            }
            } // 최근 4주
            launch { tradeService.fetchPeriodChartData(stockCode, "M").onSuccess {
                monthSummary.clear()
                monthSummary.addAll(it.takeLast(6))
                yearSummary.clear()
                yearSummary.addAll(it.takeLast(36))
            }
            }
            launch {
                DartCodeManager.getCorpCode(stockCode)?.let {
                    it.stockName = stockName
//                    NewsService.fetchAndIngestNews(it)
                }
            }
        }
        isLoading = false
    }



//    LaunchedEffect(latestPrice) {
//        println("latestPrice >>> $latestPrice")
//        if (chartData.isNotEmpty() && latestPrice != "0") {
//            val latestPrice = latestPrice ?: "0"
//            val priceDouble = latestPrice?.replace(",", "")?.toDoubleOrNull() ?: return@LaunchedEffect
//            val lastCandle = chartData.last()
//
//            // 현재 시간(분 단위) 확인
//            val currentMinute = LocalTime.now().format(DateTimeFormatter.ofPattern("HHmm00"))
//
//            if (lastCandle.stck_bsop_date != currentMinute) {
//                // [개선] 시간이 바뀌었으면 새로운 캔들 추가 (차트가 밀려나는 효과)
//                val newCandle = CandleData(
//                    stck_bsop_date = currentMinute,
//                    stck_oprc = latestPrice,
//                    stck_hgpr = latestPrice,
//                    stck_lwpr = latestPrice,
//                    stck_prpr = latestPrice,
//                    stck_cntg_hour = currentMinute,
//                    cntg_vol = "1",
//                    acml_tr_pbmn = "1",
//                )
//                // 최대 100개까지만 유지하여 성능 최적화
//                chartData = (chartData + newCandle).takeLast(100)
//            } else {
//                // 같은 분 내에서는 기존 마지막 캔들만 업데이트
//                val updatedCandle = lastCandle.copy(
//                    stck_prpr = latestPrice,
//                    stck_hgpr = if (priceDouble > (lastCandle.stck_hgpr.toDoubleOrNull() ?: 0.0)) latestPrice else lastCandle.stck_hgpr,
//                    stck_lwpr = if (priceDouble < (lastCandle.stck_lwpr.toDoubleOrNull() ?: Double.MAX_VALUE)) latestPrice else lastCandle.stck_lwpr
//                )
//                chartData = chartData.dropLast(1) + updatedCandle
//            }
//        }
//    }

    Column(modifier = Modifier.fillMaxSize().padding(16.dp)) {
        // [상단] 종목명 및 상태 메시지
        Row(
            modifier = Modifier.fillMaxWidth(),
            horizontalArrangement = Arrangement.SpaceBetween,
            verticalAlignment = Alignment.CenterVertically
        ) {
            StockHeader(
                name = stockName,
                code = stockCode,
                isDomestic = isDomestic,
                previousClose = previousClose,
                openPrice = lastPrice,
                resultMessage = resultMessage,
                resultMessageClear = {resultMessage = ""},
                isSuccess = isSuccess
            )

            // 실시간 가격 표시 (WebSocket 데이터)
            Column(horizontalAlignment = Alignment.End) {
                Text(
                    text = "${lastPrice} 원",
                    style = MaterialTheme.typography.h4,
                    fontWeight = FontWeight.Bold,
                    color = if (lastPrice?.contains("-") ?: false) Color.Blue else Color.Red
                )
                Text("실시간 체결가", style = MaterialTheme.typography.caption, color = Color.Gray)
            }
        }
        // 통합된 트렌드 카드 배치
        Row(modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.spacedBy(8.dp)) {
            PeriodTrendCard("7일", daySummary, Modifier.weight(1f))
            PeriodTrendCard("4주", weekSummary, Modifier.weight(1f))
            PeriodTrendCard("6개월", monthSummary, Modifier.weight(1f))
            PeriodTrendCard("3년", yearSummary, Modifier.weight(1f))
        }

        Spacer(modifier = Modifier.height(4.dp))
        // [중앙] 캔들 차트 (Card 내부)
        Card(
            modifier = Modifier.fillMaxWidth().height(320.dp),
            backgroundColor = Color(0xFF121212)
        ) {
            if (isLoading) {
                Box(contentAlignment = Alignment.Center) { CircularProgressIndicator(color = Color.White) }
            } else {
                CandleChart(data = chartData, modifier = Modifier.padding(16.dp))
            }
        }

        Spacer(modifier = Modifier.height(4.dp))



        // [하단] 실시간 체결 내역 및 주문 섹션
        Row(modifier = Modifier.weight(1f)) {
            // 실시간 체결 리스트
            Column(modifier = Modifier.weight(1f)) {
                Text("실시간 체결", style = MaterialTheme.typography.subtitle2, fontWeight = FontWeight.Bold)
                RealTimeTradeList(wsManager.tradeLogs)
            }

            Spacer(modifier = Modifier.width(12.dp))

            // 주문 섹션 (인자 간소화)
            Column(modifier = Modifier.weight(0.6f)) {
                IntegratedOrderSection(
                    stockCode = stockCode,
                    stockName = stockName,
                    isDomestic = isDomestic,
                    currentPrice = lastPrice,
                    holdingQuantity = holdingQuantity,
                    tradeService = tradeService,
                    onOrderSaved = onOrderSaved,
                    onOrderResult = { msg, success ->
                        resultMessage = msg
                        isSuccess = success
                    },
                    completeTradingDecision
                )
            }
        }
    }
}

@Composable
fun PeriodSummaryCard(label: String, avgPrice: String, modifier: Modifier = Modifier) {
    Card(modifier = modifier, elevation = 2.dp, backgroundColor = Color.White) {
        Column(modifier = Modifier.padding(8.dp), horizontalAlignment = Alignment.CenterHorizontally) {
            Text(label, fontSize = 10.sp, color = Color.Gray)
            Text(text = "${avgPrice}원", fontSize = 13.sp, fontWeight = FontWeight.Bold, color = Color.Black)
        }
    }
}