package ui


import androidx.compose.foundation.background
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.grid.GridCells
import androidx.compose.foundation.lazy.grid.GridItemSpan
import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
import androidx.compose.foundation.lazy.items
import androidx.compose.foundation.text.KeyboardActions
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.material.*
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Search
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.focus.onFocusChanged
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.input.ImeAction
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import model.ConfigIndex
import model.KisSession

@OptIn(ExperimentalMaterialApi::class)
@Composable
fun TradingDecisionLog() {
    var searchQuery by remember { mutableStateOf("") }
    var selectedFilter by remember { mutableStateOf("전체") }
    val filterOptions = listOf("전체", "BUY", "SELL", "HOLD", "SETTING")

    // [핵심] 원본 로그에서 필터 조건에 맞는 리스트만 산출
    val filteredLogs = TradingLogStore.decisionLogs.filter { log ->
        val matchesType = if (selectedFilter == "전체") true else log.decision == selectedFilter
        val matchesQuery = log.stockName.contains(searchQuery, ignoreCase = true) ||
                log.reason.contains(searchQuery, ignoreCase = true)
        matchesType && matchesQuery
    }

    Row(modifier = Modifier.fillMaxSize().background(Color(0xFFF2F2F2))) {
        Column(modifier = Modifier.weight(0.5f).padding(8.dp).fillMaxHeight().background(Color.White)) {
            Text("AI 자동매매 실시간 로그", style = MaterialTheme.typography.h6)

            // [추가] 상단 검색 및 필터 UI
            Column(modifier = Modifier.padding(vertical = 8.dp)) {
                // 1. 검색창
                OutlinedTextField(
                    value = searchQuery,
                    onValueChange = { searchQuery = it },
                    label = { Text("종목명 또는 내용 검색") },
                    modifier = Modifier.fillMaxWidth(),
                    leadingIcon = { Icon(Icons.Default.Search, contentDescription = null) },
                    singleLine = true
                )

                Spacer(modifier = Modifier.height(8.dp))

                // 2. 필터 버튼 그룹 (Chip 형태)
                Row(horizontalArrangement = Arrangement.spacedBy(4.dp)) {
                    filterOptions.forEach { option ->
                        val isSelected = selectedFilter == option
                        FilterChip(
                            selected = isSelected,
                            onClick = { selectedFilter = option },
                            colors = ChipDefaults.filterChipColors(
                                selectedBackgroundColor = Color(0xFF0E62CF),
                                selectedContentColor = Color.White
                            )
                        ) {
                            Text(option, fontSize = 11.sp)
                        }
                    }
                }
            }

            Divider(Modifier.padding(bottom = 8.dp))

            // [수정] filteredLogs를 사용하여 최신 로그가 위로 오게 표시
            LazyColumn(reverseLayout = true) {
                items(filteredLogs) { log ->
                    Card(
                        modifier = Modifier.fillMaxWidth().padding(vertical = 4.dp),
                        elevation = 2.dp
                    ) {
                        Column(modifier = Modifier.padding(12.dp)) {
                            Row(horizontalArrangement = Arrangement.SpaceBetween, modifier = Modifier.fillMaxWidth()) {
                                Text("${log.time} - ${log.stockName}", fontWeight = FontWeight.Bold)
                                Text(
                                    text = log.decision,
                                    color = when (log.decision) {
                                        "BUY" -> Color.Red
                                        "SETTING" -> Color(0xFFFFA500)
                                        "SELL" -> Color(0xFF800080)
                                        "HOLD" -> Color.Gray
                                        else -> Color.Gray
                                    },
                                    fontWeight = FontWeight.ExtraBold
                                )
                            }
                            Text("신뢰도: ${log.confidence}%", fontSize = 11.sp)
                            Text("이유: ${log.reason}", fontSize = 12.sp, color = Color.DarkGray)
                        }
                    }
                }
            }
        }
        Column(modifier = Modifier.weight(0.5f).padding(6.dp).fillMaxHeight().background(Color.White)) {
            LazyVerticalGrid(
                columns = GridCells.Fixed(2), // 2열 병렬 배치
                horizontalArrangement = Arrangement.spacedBy(6.dp),
                verticalArrangement = Arrangement.spacedBy(6.dp),
                modifier = Modifier.fillMaxWidth().fillMaxHeight().background(Color.White)
            ) {
                var firstSet = mutableSetOf<ConfigIndex>()
                item(span = { GridItemSpan(maxLineSpan) }) { // 2열을 모두 차지함
                    Text(
                        "💰 거래 기본 설정",
                        style = MaterialTheme.typography.subtitle2,
                        modifier = Modifier.padding(top = 10.dp, bottom = 8.dp)
                    )
                }
                var defaults = arrayOf(
                    ConfigIndex.TAX_INDEX,
                    ConfigIndex.PROFIT_INDEX,
                    ConfigIndex.BUY_WEIGHT_INDEX,
                    ConfigIndex.MAX_BUDGET_INDEX,
                    ConfigIndex.MAX_PRICE_INDEX,
                    ConfigIndex.MIN_PRICE_INDEX,
                    ConfigIndex.MIN_PURCHASE_SCORE_INDEX,
                    ConfigIndex.SELL_PROFIT,
                    ConfigIndex.MAX_COUNT_INDEX,
                )
                items(defaults.size) { index ->
                    val configKey = defaults.get(index)

                    // 1. 키보드 입력을 실시간으로 보여줄 로컬 상태 (String)
                    var localText by remember(configKey) {
                        mutableStateOf(KisSession.config.getValues(configKey)?.toString() ?: "")
                    }

                    // 저장 로직을 공통 함수로 분리
                    val saveAction = {
                        var newValue = localText.toDoubleOrNull() ?: 0.0
                        var oldValue = KisSession.config.getValues(configKey)
                        if (configKey.label.contains("PROFIT")) {
                            newValue =  newValue /  KisSession.config.getValues(ConfigIndex.PROFIT_INDEX)
                        }
                        if (firstSet.contains(configKey)) {
                            TradingLogStore.addSettingLog(configKey.label,oldValue.toString(),newValue.toString(),"💾 저장됨: ${configKey.label} = $newValue")
                        } else {
                            firstSet.add(configKey)
                        }

                        KisSession.config.setValues(configKey, newValue)
                        DatabaseFactory.saveConfig(KisSession.config)
                        println("💾 저장됨: ${configKey.label} = $newValue")
                    }

                    var text = if (configKey.label.contains("PROFIT")) {
                        "${(localText.toDoubleOrNull() ?: 1.0) * KisSession.config.getValues(ConfigIndex.PROFIT_INDEX)}"
                    } else {
                        localText
                    }

                    OutlinedTextField(
                        value = text,
                        onValueChange = { localText = it }, // 화면에는 즉시 반영
                        label = { Text(configKey.label) },
                        modifier = Modifier
                            .fillMaxWidth()
                            .onFocusChanged { focusState ->
                                // 2. 포커스를 잃었을 때 저장
                                if (!focusState.isFocused) {
                                    saveAction()
                                }
                            },
                        keyboardOptions = KeyboardOptions(
                            imeAction = ImeAction.Done,
                            keyboardType = KeyboardType.Decimal
                        ),
                        keyboardActions = KeyboardActions(
                            // 3. 엔터(Done) 키를 눌렀을 때 저장
                            onDone = {
                                saveAction()
                            }
                        ),
                        singleLine = true
                    )
                }
                item(span = { GridItemSpan(maxLineSpan) }) { // 2열을 모두 차지함
                    Text(
                        "💰매수 정책 및 기대 수익률",
                        style = MaterialTheme.typography.subtitle2,
                        modifier = Modifier.padding(top = 10.dp, bottom = 8.dp)
                    )
                }
                var defaults2 = arrayOf(
                    arrayOf(ConfigIndex.GRADE_5_BUY,
                        ConfigIndex.GRADE_5_PROFIT,),
                    arrayOf(ConfigIndex.GRADE_4_BUY,
                        ConfigIndex.GRADE_4_PROFIT,),
                    arrayOf(ConfigIndex.GRADE_3_BUY,
                        ConfigIndex.GRADE_3_PROFIT,),
                    arrayOf(ConfigIndex.GRADE_2_BUY,
                        ConfigIndex.GRADE_2_PROFIT,),
                    arrayOf(ConfigIndex.GRADE_1_BUY,
                        ConfigIndex.GRADE_1_PROFIT,),
                )
                for (items in defaults2) {
                    val common = findLongestCommonSubstring(items.first().label,items.last().label)
                    item(span = { GridItemSpan(maxLineSpan) }) { // 2열을 모두 차지함
                        Text(
                            common,
                            style = MaterialTheme.typography.body1,
                            modifier = Modifier.padding(top = 10.dp, bottom = 8.dp)
                        )
                    }

                    items(items.size) { index ->
                        val configKey = items.get(index)

                        // 1. 키보드 입력을 실시간으로 보여줄 로컬 상태 (String)
                        var localText by remember(configKey) {
                            mutableStateOf(KisSession.config.getValues(configKey)?.toString() ?: "")
                        }

                        var labelText by  remember(configKey) {
                            mutableStateOf(KisSession.config.getValues(configKey)?.toString() ?: "")
                        }

                        val saveAction = {
                            var oldValue = KisSession.config.getValues(configKey)
                            var newValue = localText.toDoubleOrNull() ?: 0.0
//
                            KisSession.config.setValues(configKey, newValue)
                            DatabaseFactory.saveConfig(KisSession.config)
                            if (firstSet.contains(configKey)) {
                                TradingLogStore.addSettingLog(configKey.label,oldValue.toString(),newValue.toString(),"💾 저장됨: ${configKey.label} = $newValue")
                            } else {
                                firstSet.add(configKey)
                            }
                            labelText = if (configKey.name.contains("PROFIT")) {
                                getRemaining(configKey.label,common) + ": 기준율(${KisSession.config.getValues(ConfigIndex.PROFIT_INDEX)}) * 성향별 비율(${KisSession.config.getValues(configKey)}) + 세금제비용(${KisSession.config.getValues(
                                    ConfigIndex.TAX_INDEX)}) = ${(localText.toDouble() * KisSession.config.getValues(ConfigIndex.PROFIT_INDEX)) + KisSession.config.getValues(
                                    ConfigIndex.TAX_INDEX)}"
                            } else {
                                getRemaining(configKey.label,common) + ": -${localText} 호가 매수}"
                            }
                        }

                        labelText = if (configKey.name.contains("PROFIT")) {
                            getRemaining(configKey.label,common) + ": 기준율(${KisSession.config.getValues(ConfigIndex.PROFIT_INDEX)}) * 성향별 비율(${KisSession.config.getValues(configKey)}) + 세금제비용(${KisSession.config.getValues(
                                ConfigIndex.TAX_INDEX)}) = ${(localText.toDouble() * KisSession.config.getValues(ConfigIndex.PROFIT_INDEX)) + KisSession.config.getValues(
                                ConfigIndex.TAX_INDEX)} "
                        } else {
                            getRemaining(configKey.label,common) + ": -${localText} 호가 매수}"
                        }

                        OutlinedTextField(
                            value = localText,
                            onValueChange = { localText = it }, // 화면에는 즉시 반영
                            label = { Text(labelText) },
                            modifier = Modifier
                                .fillMaxWidth()
                                .onFocusChanged { focusState ->
                                    // 2. 포커스를 잃었을 때 저장
                                    if (!focusState.isFocused) {
                                        saveAction()
                                    }
                                },
                            keyboardOptions = KeyboardOptions(
                                imeAction = ImeAction.Done,
                                keyboardType = KeyboardType.Decimal
                            ),
                            keyboardActions = KeyboardActions(
                                // 3. 엔터(Done) 키를 눌렀을 때 저장
                                onDone = {
                                    saveAction()
                                }
                            ),
                            singleLine = true
                        )
                    }
                }
            }
        }
    }
}