using HandyControl.Controls;
using HandyControl.Data;
using Prism.Commands;
using System.Collections.ObjectModel;
using System.IO;
using System.Net;
using System.Text.Json;
using System.Text.Json.Nodes;
using System.Windows;
using System.Windows.Threading;
using YY.Admin.Core.Entity;
using YY.Admin.Core.Services;
using YY.Admin.Infrastructure.Print;
using YY.Admin.Services.Service;
using YY.Admin.Services.Service.Print;
using YY.Admin.Views.RawMaterialEntry;

namespace YY.Admin.ViewModels.RawMaterialEntry;

/// <summary>
/// 「新增原料入场记录」独立页面：左侧表单逻辑继承编辑 VM，右侧展示当日入场简要列表并支持选中回填模板。
/// </summary>
public class RawMaterialEntryOperationViewModel : RawMaterialEntryEditDialogViewModel
{
    private const int TodayListFetchSize = 5000;
    private const string RawMaterialEntryBizCode = "1900000000000000530";
    private const string RawMaterialEntryTemplateCode = "MES_RAW_MATERIAL_ENTRY";
    private const string RawMaterialCardTemplateCode = "MES_RAW_MATERIAL_CARD";
    private readonly IRawMaterialCardService _rawMaterialCardService;
    private readonly IPrintDotService _printDotService;
    private readonly IPrintBizTemplateBindService _printBizTemplateBindService;
    private readonly IPrintTemplateService _printTemplateService;

    private static readonly JsonSerializerOptions LayoutJsonOpts = new()
    {
        PropertyNameCaseInsensitive = true,
        WriteIndented = true
    };

    private static string LayoutFilePath => Path.Combine(
        Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
        "YY.Admin",
        "raw-material-entry-add-layout.json");

    private bool _suppressTodaySelectionReaction;

    public ObservableCollection<MesXslRawMaterialEntry> TodayEntries { get; } = new();

    public IReadOnlyList<string> DateRangeOptions { get; } =
        ["今日", "过去24小时", "过去48小时", "过去72小时"];

    private string _selectedDateRange = "今日";
    public string SelectedDateRange
    {
        get => _selectedDateRange;
        set
        {
            if (SetProperty(ref _selectedDateRange, value))
                _ = LoadTodayEntriesAsync();
        }
    }

    private MesXslRawMaterialEntry? _selectedTodayEntry;
    public MesXslRawMaterialEntry? SelectedTodayEntry
    {
        get => _selectedTodayEntry;
        set
        {
            if (!SetProperty(ref _selectedTodayEntry, value)) return;
            if (_suppressTodaySelectionReaction || value == null) return;
            _ = ApplyTodayRowToFormAsync(value);
        }
    }

    private bool _isRightPanelExpanded = true;
    public bool IsRightPanelExpanded
    {
        get => _isRightPanelExpanded;
        set
        {
            if (!SetProperty(ref _isRightPanelExpanded, value)) return;
            SaveLayoutState();
        }
    }

    private double _expandedRightPanelWidth = 280;
    /// <summary>右侧面板展开时的目标宽度（像素），由 GridSplitter 拖拽结束时回写。</summary>
    public double ExpandedRightPanelWidth
    {
        get => _expandedRightPanelWidth;
        private set
        {
            var v = Math.Clamp(value, 200, 560);
            if (SetProperty(ref _expandedRightPanelWidth, v))
                SaveLayoutState();
        }
    }

    /// <summary>
    /// 「生成原材料卡片」按钮可用条件：
    /// 入场记录已保存（有 Id）且至少存在一行「未生成卡片 + 份数>0」的明细。
    /// 已打印态下用户「继续拆码」新增了行，按钮自动重新可用；全部行都已生成卡片时不可用。
    /// </summary>
    public bool CanGenerateCards =>
        !string.IsNullOrWhiteSpace(Entry?.Id)
        && SplitCodeDetails.Any(d => !d.HasCard && (d.Portions ?? 0) > 0);

    public DelegateCommand ToggleRightPanelCommand { get; }
    public DelegateCommand RefreshTodayEntriesCommand { get; }
    public DelegateCommand GenerateRawMaterialCardsCommand { get; }
    /// <summary>「重新拆码」：清除已生成的卡片 + 清空明细，仅在编辑态可用。</summary>
    public DelegateCommand ResplitCommand { get; }
    public DelegateCommand SaveAndPrintCommand { get; }
    public DelegateCommand RefreshPrintersCommand { get; }
    public DelegateCommand ZoomOutPrintPreviewCommand { get; }
    public DelegateCommand ZoomInPrintPreviewCommand { get; }
    public DelegateCommand ResetPrintPreviewZoomCommand { get; }

    /// <summary>PrintDot 桥接器返回的打印机列表（与打印模板页一致）。</summary>
    public ObservableCollection<PrintDotPrinter> Printers { get; } = new();

    private bool _suppressPrinterSave;
    private PrintDotPrinter? _selectedPrinter;
    public PrintDotPrinter? SelectedPrinter
    {
        get => _selectedPrinter;
        set
        {
            if (!SetProperty(ref _selectedPrinter, value)) return;
            if (_suppressPrinterSave) return;
            var s = PrintDotSettings.Load();
            s.SelectedPrinter = value?.Name ?? string.Empty;
            s.Save();
        }
    }

    private string _printerStatus = string.Empty;
    public string PrinterStatus
    {
        get => _printerStatus;
        set => SetProperty(ref _printerStatus, value);
    }

    private static readonly JsonSerializerOptions PreviewSnapshotJsonOpts = new()
    {
        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
    };

    private readonly DispatcherTimer _printPreviewTimer;
    private string _lastPreviewSnapshot = string.Empty;
    private int _previewRequestGeneration;
    private bool _printPreviewBusy;
    private bool _previewTemplateLoaded;
    private string _previewTemplateJson = string.Empty;
    private string _previewTemplateName = "原料入场记录";
    private string _previewTemplateCode = RawMaterialEntryTemplateCode;
    private string _previewFieldMappingJson = "[]";
    private bool _rawMaterialCardTemplateLoaded;
    private string _rawMaterialCardTemplateJson = string.Empty;
    private string _rawMaterialCardTemplateName = "原材料卡片";
    private string _rawMaterialCardTemplateCode = RawMaterialCardTemplateCode;
    private string _rawMaterialCardFieldMappingJson = "[]";

    private bool _isPrintPreviewExpanded = true;
    /// <summary>右侧下方「入场标签打印预览」折叠面板是否展开。</summary>
    public bool IsPrintPreviewExpanded
    {
        get => _isPrintPreviewExpanded;
        set
        {
            if (!SetProperty(ref _isPrintPreviewExpanded, value)) return;
            if (value) _lastPreviewSnapshot = string.Empty;
            RaisePropertyChanged(nameof(IsPrintPreviewWebAreaVisible));
        }
    }

    /// <summary>右侧下方预览区是否显示 WebView2 宿主（HandyControl 内嵌弹窗期间因 Airspace 临时隐藏）。</summary>
    public bool IsPrintPreviewWebAreaVisible => !SuspendEmbeddedPrintPreviewAirspace && IsPrintPreviewExpanded;

    protected override void OnSuspendEmbeddedPrintPreviewAirspaceChanged()
    {
        RaisePropertyChanged(nameof(IsPrintPreviewWebAreaVisible));
    }

    private string _printPreviewStatus = string.Empty;
    /// <summary>预览区状态提示（如离线、加载中、错误摘要）。</summary>
    public string PrintPreviewStatus
    {
        get => _printPreviewStatus;
        private set => SetProperty(ref _printPreviewStatus, value);
    }

    private const double PrintPreviewMinZoom = 0.5d;
    private const double PrintPreviewMaxZoom = 2.0d;
    private const double PrintPreviewDefaultZoom = 0.7d;
    private const double PrintPreviewZoomStep = 0.1d;

    private double _printPreviewZoomFactor = PrintPreviewDefaultZoom;
    /// <summary>打印预览缩放倍率（WebView2 ZoomFactor）。</summary>
    public double PrintPreviewZoomFactor
    {
        get => _printPreviewZoomFactor;
        set
        {
            var clamped = Math.Round(Math.Clamp(value, PrintPreviewMinZoom, PrintPreviewMaxZoom), 2);
            if (!SetProperty(ref _printPreviewZoomFactor, clamped)) return;
            RaisePropertyChanged(nameof(PrintPreviewZoomText));
        }
    }

    /// <summary>打印预览缩放显示文本（百分比）。</summary>
    public string PrintPreviewZoomText => $"{Math.Round(PrintPreviewZoomFactor * 100):0}%";

    /// <summary>由 View 订阅，在 UI 线程将 HTML 交给 WebView2。</summary>
    public event EventHandler<string>? PrintPreviewHtmlReady;

    private bool _isActionBusy;
    /// <summary>底部动作按钮（保存/保存并打印/生成卡片）是否处于执行中。</summary>
    public bool IsActionBusy
    {
        get => _isActionBusy;
        private set
        {
            if (SetProperty(ref _isActionBusy, value))
            {
                RaisePropertyChanged(nameof(IsNotActionBusy));
            }
        }
    }

    public bool IsNotActionBusy => !IsActionBusy;

    private string _actionBusyText = "处理中...";
    /// <summary>动作执行中的遮罩提示文案。</summary>
    public string ActionBusyText
    {
        get => _actionBusyText;
        private set => SetProperty(ref _actionBusyText, value);
    }

    public RawMaterialEntryOperationViewModel(
        IRawMaterialEntryService entryService,
        IJeecgDictSyncService dictSyncService,
        IMixerMaterialService mixerMaterialService,
        IMixerMaterialTareStrategyService tareStrategyService,
        ISupplierService supplierService,
        IRawMaterialCardService rawMaterialCardService,
        IPrintDotService printDotService,
        IPrintBizTemplateBindService printBizTemplateBindService,
        IPrintTemplateService printTemplateService,
        IContainerExtension container,
        IRegionManager regionManager)
        : base(entryService, dictSyncService, mixerMaterialService, tareStrategyService, supplierService, container, regionManager)
    {
        _rawMaterialCardService = rawMaterialCardService;
        _printDotService = printDotService;
        _printBizTemplateBindService = printBizTemplateBindService;
        _printTemplateService = printTemplateService;
        LoadLayoutState();
        ToggleRightPanelCommand = new DelegateCommand(() => IsRightPanelExpanded = !IsRightPanelExpanded);
        RefreshTodayEntriesCommand = new DelegateCommand(async () => await LoadTodayEntriesAsync());
        GenerateRawMaterialCardsCommand = new DelegateCommand(async () => await GenerateRawMaterialCardsAsync());
        ResplitCommand = new DelegateCommand(async () => await ResplitAsync(), () => CanResplit)
            .ObservesProperty(() => Entry);
        SaveAndPrintCommand = new DelegateCommand(async () => await SaveAndPrintAsync());
        RefreshPrintersCommand = new DelegateCommand(async () => await RefreshPrintersAsync(verbose: true));
        ZoomOutPrintPreviewCommand = new DelegateCommand(() => PrintPreviewZoomFactor -= PrintPreviewZoomStep);
        ZoomInPrintPreviewCommand = new DelegateCommand(() => PrintPreviewZoomFactor += PrintPreviewZoomStep);
        ResetPrintPreviewZoomCommand = new DelegateCommand(() => PrintPreviewZoomFactor = PrintPreviewDefaultZoom);
        // 集合变化：批量重订阅 item.PropertyChanged 监听 HasCard/Portions，并同步刷新两个 Can*。
        SplitCodeDetails.CollectionChanged += OnSplitCodeDetailsCollectionChangedForCanFlags;
        _ = RefreshPrintersAsync(verbose: false);

        var dispatcher = Application.Current?.Dispatcher ?? Dispatcher.CurrentDispatcher;
        _printPreviewTimer = new DispatcherTimer(
            TimeSpan.FromMilliseconds(480),
            DispatcherPriority.Background,
            (_, _) => _ = OnPrintPreviewTickAsync(),
            dispatcher);
        _printPreviewTimer.Start();
    }

    /// <summary>
    /// 「重新拆码」按钮可用条件：入场记录已保存 + 至少有一行已生成卡片。
    /// 全是新增未生成的行时，用户直接点「删除」即可，无需走「清空卡片」流程。
    /// </summary>
    public bool CanResplit =>
        !string.IsNullOrWhiteSpace(Entry?.Id)
        && SplitCodeDetails.Any(d => d.HasCard);

    /// <summary>
    /// 集合变化时：对新增/移除的 item 维护 PropertyChanged 订阅，并刷新两个 Can* 属性。
    /// HasCard / Portions 变化会让「生成原材料卡片」和「重新拆码」按钮可用性同步刷新。
    /// </summary>
    private void OnSplitCodeDetailsCollectionChangedForCanFlags(
        object? sender,
        System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
    {
        if (e.OldItems != null)
        {
            foreach (RawMaterialSplitDetailItem o in e.OldItems)
                o.PropertyChanged -= OnSplitDetailHasCardChanged;
        }
        if (e.NewItems != null)
        {
            foreach (RawMaterialSplitDetailItem n in e.NewItems)
                n.PropertyChanged += OnSplitDetailHasCardChanged;
        }
        RaisePropertyChanged(nameof(CanGenerateCards));
        RaisePropertyChanged(nameof(CanResplit));
        ResplitCommand.RaiseCanExecuteChanged();
    }

    private void OnSplitDetailHasCardChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e)
    {
        if (e.PropertyName is nameof(RawMaterialSplitDetailItem.HasCard)
            or nameof(RawMaterialSplitDetailItem.Portions))
        {
            RaisePropertyChanged(nameof(CanGenerateCards));
            RaisePropertyChanged(nameof(CanResplit));
            ResplitCommand.RaiseCanExecuteChanged();
        }
    }

    public override void InitializeForAdd()
    {
        _lastPreviewSnapshot = string.Empty;
        _suppressTodaySelectionReaction = true;
        _selectedTodayEntry = null;
        RaisePropertyChanged(nameof(SelectedTodayEntry));
        _suppressTodaySelectionReaction = false;
        base.InitializeForAdd();
        RaisePropertyChanged(nameof(CanGenerateCards));
    }

    /// <summary>保存后按业务打印绑定拉取模板与 printData，直接发送到 PrintDot 打印机（不弹预览窗）。</summary>
    private async Task SaveAndPrintAsync()
    {
        if (IsActionBusy) return;
        if (Entry == null) return;
        var wasEdit = !IsAddMode;
        var barcode = Entry.Barcode;
        BeginActionBusy("保存并打印中...");
        try
        {
            IsLoading = true;
            if (!await PersistEntryCoreAsync()) return;

            string? entryId = Entry.Id;
            if (string.IsNullOrWhiteSpace(entryId) && !string.IsNullOrWhiteSpace(barcode))
            {
                var page = await EntryService.PageAsync(1, 50, barcode: barcode);
                entryId = page.Records
                    .FirstOrDefault(e => string.Equals(e.Barcode, barcode, StringComparison.OrdinalIgnoreCase))?.Id
                    ?? page.Records
                        .OrderByDescending(e => e.EntryTime ?? e.CreateTime ?? DateTime.MinValue)
                        .FirstOrDefault()?.Id;
            }

            if (string.IsNullOrWhiteSpace(entryId))
            {
                HandyControl.Controls.MessageBox.Warning("保存成功，但未能解析记录主键，无法打印。请从右侧列表选中该条后再试。");
            }
            else
            {
                var (templateJson, printDataJson, err) = await EntryService.PrepareNativePrintAsync(entryId);
                if (!string.IsNullOrWhiteSpace(err))
                {
                    HandyControl.Controls.MessageBox.Error($"保存成功，但打印准备失败：{err}");
                }
                else
                {
                    var selectedPrinterName = SelectedPrinter?.Name?.Trim();
                    if (string.IsNullOrWhiteSpace(selectedPrinterName))
                    {
                        HandyControl.Controls.MessageBox.Warning("保存成功，但未选择打印机。请先选择打印机后再试。");
                    }
                    else
                    {
                        JsonObject? dataObj = JsonNode.Parse(printDataJson) as JsonObject;
                        dataObj ??= new JsonObject();
                        var html = NativePrintRenderService.RenderToHtml(templateJson, dataObj);
                        var tpl = BuildPrintTemplateForEntry(templateJson);
                        var pdfBase64 = await HtmlToPdfRenderer.RenderAsync(
                            html,
                            tpl.PaperWidthMm ?? 210d,
                            tpl.PaperHeightMm ?? 297d);
                        var jobName = string.IsNullOrWhiteSpace(barcode) ? "原料入场记录" : $"原料入场记录-{barcode}";
                        await _printDotService.PrintAsync(selectedPrinterName, pdfBase64, jobName, 1);
                    }
                }
            }

            Growl.Success(new GrowlInfo
            {
                Message = "保存成功",
                ShowDateTime = false,
                WaitTime = 1
            });

            Result = true;
            RaisePropertyChanged(nameof(CanGenerateCards));
            await LoadTodayEntriesAsync();
            InitializeForAdd();
        }
        catch (Exception ex)
        {
            HandyControl.Controls.MessageBox.Error($"保存或打印失败：{ex.Message}");
        }
        finally
        {
            IsLoading = false;
            EndActionBusy();
        }
    }

    /// <summary>通过 PrintDot 桥接器拉取打印机列表（与打印模板页一致）。</summary>
    private async Task RefreshPrintersAsync(bool verbose)
    {
        if (verbose) PrinterStatus = "刷新打印机中...";
        var savedName = PrintDotSettings.Load().SelectedPrinter;
        try
        {
            var list = await _printDotService.GetPrintersAsync();
            Application.Current.Dispatcher.Invoke(() =>
            {
                Printers.Clear();
                foreach (var p in list) Printers.Add(p);
                var match = list.FirstOrDefault(p => p.Name == savedName)
                            ?? list.FirstOrDefault(p => p.IsDefault)
                            ?? (list.Count > 0 ? list[0] : null);
                _suppressPrinterSave = true;
                SelectedPrinter = match;
                _suppressPrinterSave = false;
                PrinterStatus = list.Count > 0 ? $"共 {list.Count} 台打印机" : "未检测到打印机";
            });
        }
        catch (Exception ex)
        {
            Application.Current.Dispatcher.Invoke(() =>
            {
                Printers.Clear();
                _suppressPrinterSave = true;
                SelectedPrinter = null;
                _suppressPrinterSave = false;
                PrinterStatus = verbose
                    ? $"PrintDot 未连接：{ex.Message}"
                    : "PrintDot 未连接";
            });
        }
    }

    private static PrintTemplate BuildPrintTemplateForEntry(string? templateJson)
    {
        try
        {
            if (string.IsNullOrWhiteSpace(templateJson) || templateJson == "{}")
                return new PrintTemplate { TemplateName = "原料入场记录", TemplateCode = "MES_RAW_MATERIAL_ENTRY" };
            var root = JsonDocument.Parse(templateJson).RootElement;
            double w = 210, h = 297;
            if (root.TryGetProperty("page", out var page))
            {
                if (page.TryGetProperty("width", out var wEl)) w = wEl.GetDouble();
                if (page.TryGetProperty("height", out var hEl)) h = hEl.GetDouble();
            }
            return new PrintTemplate
            {
                TemplateName = "原料入场记录",
                TemplateCode = "MES_RAW_MATERIAL_ENTRY",
                PaperWidthMm = w,
                PaperHeightMm = h,
                PaperOrientation = w > h ? "横向" : "纵向",
            };
        }
        catch
        {
            return new PrintTemplate { TemplateName = "原料入场记录", TemplateCode = "MES_RAW_MATERIAL_ENTRY" };
        }
    }

    /// <summary>页面首次加载时拉取「今日」列表（由 View Loaded 调用）。</summary>
    public async Task LoadTodayEntriesOnFirstShowAsync() => await LoadTodayEntriesAsync();

    /// <summary>用户在拖拽结束 GridSplitter 后提交实际列宽。</summary>
    public void CommitRightPanelWidthFromView(double actualWidth)
    {
        if (!IsRightPanelExpanded || actualWidth < 1) return;
        ExpandedRightPanelWidth = actualWidth;
    }

    private async Task LoadTodayEntriesAsync()
    {
        try
        {
            IsLoading = true;
            var result = await EntryService.PageAsync(1, TodayListFetchSize);
            DateTime? threshold = _selectedDateRange switch
            {
                "过去24小时" => DateTime.Now.AddHours(-24),
                "过去48小时" => DateTime.Now.AddHours(-48),
                "过去72小时" => DateTime.Now.AddHours(-72),
                _            => null   // "今日"：按自然日过滤
            };
            var rows = result.Records
                .Where(e => IsInRange(e, threshold))
                .OrderByDescending(e => e.EntryTime ?? e.CreateTime ?? DateTime.MinValue)
                .ToList();
            TodayEntries.Clear();
            foreach (var r in rows)
                TodayEntries.Add(r);
        }
        catch
        {
            // 列表失败不阻断左侧新增（与物料加载策略一致）
        }
        finally
        {
            IsLoading = false;
        }
    }

    private static bool IsInRange(MesXslRawMaterialEntry e, DateTime? threshold)
    {
        if (threshold == null)
        {
            var today = DateTime.Today;
            return (e.EntryTime?.Date == today) || (e.CreateTime?.Date == today);
        }
        return (e.EntryTime >= threshold) || (e.CreateTime >= threshold);
    }

    /// <summary>
    /// 点击右侧今日记录：直接以「编辑模式」加载源记录到左侧表单（保留 Id/条码/批次号），
    /// 不再走「新增模板」逻辑，避免重新生成条码、覆盖原数据。
    /// </summary>
    private async Task ApplyTodayRowToFormAsync(MesXslRawMaterialEntry src)
    {
        // 复用基类 InitializeForEdit：保留 Id/Barcode/BatchNo/状态等所有字段，标题自动切到「编辑原料入场记录」
        base.InitializeForEdit(src);
        RaisePropertyChanged(nameof(CanGenerateCards));

        // 若物料列表此前未加载导致选中项未回填，则补一次拉取（与编辑弹窗逻辑一致）
        if (_pendingMaterialId != null)
            await LoadMaterialOptionsAsync();
        _lastPreviewSnapshot = string.Empty;
    }

    /// <summary>
    /// 保存成功后：无论新增还是编辑，都立即刷新右侧「今日入场」列表。
    /// 编辑成功额外把表单切回「新增态」，避免用户连续误改同一条；新增成功后由基类负责清空表单。
    /// </summary>
    protected override async Task SaveAsync()
    {
        if (IsActionBusy) return;
        BeginActionBusy("保存中...");
        var wasEdit = !IsAddMode;
        try
        {
            await base.SaveAsync();
            RaisePropertyChanged(nameof(CanGenerateCards));

            if (!Result || CloseAction != null)
            {
                return;
            }

            await LoadTodayEntriesAsync();

            if (wasEdit)
            {
                Growl.Success(new GrowlInfo
                {
                    Message = "保存成功",
                    ShowDateTime = false,
                    WaitTime = 1
                });
                InitializeForAdd();
            }
        }
        finally
        {
            EndActionBusy();
        }
    }

    /// <summary>
    /// 「重新拆码」：弹窗预提示「将清除 N 张原材料卡片」→ 确认 → 后端按 splitDetailId IN 批删
    /// → 清空 SplitCodeDetails → Entry.PrintFlag=0 → EditAsync(Entry) 持久化新状态 → 刷新今日列表。
    /// 流程对应「清空卡片重新生成」的业务诉求；用户可立即重新维护明细并再次「生成原材料卡片」。
    /// </summary>
    private async Task ResplitAsync()
    {
        if (Entry == null || string.IsNullOrWhiteSpace(Entry.Id))
        {
            HandyControl.Controls.MessageBox.Warning("请先选中一条已保存的入场记录后再「重新拆码」。");
            return;
        }
        var detailIds = SplitCodeDetails
            .Select(d => d.Id)
            .Where(id => !string.IsNullOrWhiteSpace(id))
            .Distinct()
            .ToList();

        try
        {
            IsLoading = true;

            // dryRun 预查：统计当前明细行已生成的卡片数量
            var cardCount = detailIds.Count > 0
                ? await _rawMaterialCardService.DeleteBySplitDetailIdsAsync(detailIds, dryRun: true)
                : 0;
            if (cardCount < 0)
            {
                HandyControl.Controls.MessageBox.Error("无法连接服务器，重新拆码已取消。");
                return;
            }

            var confirm = HandyControl.Controls.MessageBox.Show(
                $"当前入场记录已生成 {cardCount} 条原材料卡片，是否清空卡片重新生成？",
                "重新拆码",
                System.Windows.MessageBoxButton.OKCancel,
                System.Windows.MessageBoxImage.Question);
            if (confirm != System.Windows.MessageBoxResult.OK)
            {
                return;
            }

            // 真正执行批删（即使 cardCount=0 也调用一次，结果幂等）
            if (cardCount > 0)
            {
                var deleted = await _rawMaterialCardService.DeleteBySplitDetailIdsAsync(detailIds, dryRun: false);
                if (deleted < 0)
                {
                    HandyControl.Controls.MessageBox.Error("清除已生成的原材料卡片失败，重新拆码已中止。");
                    return;
                }
            }

            // 清空明细 + 重置打印标记，并把变更持久化到后端入场记录
            SplitCodeDetails.Clear();
            Entry.PrintFlag = "0";
            ApplySplitDetailsToEntry(); // 同步把 PortionDetailIds 等清空到 Entry 上
            var ok = await EntryService.EditAsync(Entry);
            if (!ok)
            {
                HandyControl.Controls.MessageBox.Error("保存重新拆码后的入场记录失败，请刷新后重试。");
                return;
            }

            RaisePropertyChanged(nameof(Entry));
            RaisePropertyChanged(nameof(IsPrinted));
            RaisePropertyChanged(nameof(IsTotalWeightEditable));
            AddSplitDetailCommand.RaiseCanExecuteChanged();
            RaisePropertyChanged(nameof(CanGenerateCards));
            RaisePropertyChanged(nameof(CanResplit));
            HandyControl.Controls.MessageBox.Success($"已清除 {cardCount} 条原材料卡片，请重新维护拆码明细。");
            await LoadTodayEntriesAsync();
        }
        catch (Exception ex)
        {
            HandyControl.Controls.MessageBox.Error($"重新拆码失败：{ex.Message}");
        }
        finally
        {
            IsLoading = false;
        }
    }

    /// <summary>
    /// 「生成原材料卡片」：仅处理 HasCard==false 的明细行（「继续拆码」流程的核心）。
    /// 条码续号 = 已有卡片总数（Σ HasCard==true 行的 Portions）+ 1，避免与已生成卡片的条码冲突。
    /// 成功生成的行置 HasCard=true，Entry.PrintFlag=1（整票级标记）。
    /// </summary>
    private async Task GenerateRawMaterialCardsAsync()
    {
        if (IsActionBusy) return;
        if (Entry == null || string.IsNullOrWhiteSpace(Entry.Id))
        {
            HandyControl.Controls.MessageBox.Warning("请先保存入场记录再生成原材料卡片！");
            return;
        }

        // 只处理未生成卡片的行 + 份数>0；已生成行直接跳过，避免重复加卡和条码冲突
        var pendingRows = SplitCodeDetails
            .Where(d => !d.HasCard && (d.Portions ?? 0) > 0)
            .ToList();
        if (pendingRows.Count == 0)
        {
            HandyControl.Controls.MessageBox.Warning("当前没有待生成卡片的拆码明细（已生成的行不会重复处理）。请先「新增明细」再生成。");
            return;
        }

        if (!await EnsureEntryBarcodeAndBatchNoAsync())
        {
            return;
        }

        // 库位必填仅校验本批待生成行；行号取在原集合的真实索引，避免编号偏移误导
        foreach (var row in pendingRows)
        {
            if (string.IsNullOrWhiteSpace(row.WarehouseLocation))
            {
                var realIndex = SplitCodeDetails.IndexOf(row);
                HandyControl.Controls.MessageBox.Warning($"拆码明细第 {realIndex + 1} 行的「库位」未填写，请点击该行库位选择库区后再生成原材料卡片。");
                return;
            }
        }

        // 总重核对：拆码明细合计 vs 基础资料总重
        {
            var splitTotal = SplitCodeDetails.Sum(d => (d.PortionWeight ?? 0d) * (d.Portions ?? 0));
            var basicTotal = Entry.TotalWeight ?? 0d;
            if (Math.Abs(splitTotal - basicTotal) > 0.01d)
            {
                string hint;
                if (splitTotal > basicTotal)
                    hint = $"本次打印拆码总重 {splitTotal:0.##}，超出基础资料总重 {basicTotal:0.##}，超出部分是否需要核对？";
                else
                    hint = $"本次打印拆码总重 {splitTotal:0.##}，少于基础资料总重 {basicTotal:0.##}，剩余部分将无法继续拆码，是否继续？";
                var confirm = System.Windows.MessageBox.Show(
                    hint,
                    "总重核对",
                    System.Windows.MessageBoxButton.OKCancel,
                    System.Windows.MessageBoxImage.Warning);
                if (confirm != System.Windows.MessageBoxResult.OK) return;
            }
        }

        // 续号起点：已有卡片数 = Σ HasCard==true 行的 Portions；新增卡片从其后续编
        var alreadyGenerated = SplitCodeDetails
            .Where(d => d.HasCard)
            .Sum(d => d.Portions ?? 0);
        var plannedCards = BuildPlannedRawMaterialCards(Entry, pendingRows, alreadyGenerated + 1);
        if (plannedCards.Count == 0)
        {
            HandyControl.Controls.MessageBox.Warning("未生成有效的原材料卡片预览数据，请检查拆码明细后重试。");
            return;
        }

        if (!await EnsureRawMaterialCardTemplateLoadedAsync())
        {
            HandyControl.Controls.MessageBox.Warning("未找到原材料卡片打印模板，请先同步“业务打印绑定/打印模板”后再试。");
            return;
        }

        var confirmWindow = new RawMaterialCardGenerateConfirmWindow(
            plannedCards,
            _rawMaterialCardTemplateName,
            _rawMaterialCardTemplateCode,
            _printDotService,
            row =>
            {
                var matched = plannedCards.FirstOrDefault(p =>
                    string.Equals(p.DetailId, row.DetailId, StringComparison.OrdinalIgnoreCase)
                    && string.Equals(p.Card.Barcode, row.Card.Barcode, StringComparison.OrdinalIgnoreCase));
                var target = matched ?? plannedCards[Math.Clamp(row.Index - 1, 0, plannedCards.Count - 1)];
                return BuildRawMaterialCardPreviewHtml(target);
            })
        {
            Owner = Application.Current.MainWindow,
            WindowStartupLocation = WindowStartupLocation.CenterOwner
        };
        // WebView2 Airspace：模态子窗体仍可能与本窗体内 HWND 叠层异常，弹窗期间收起嵌入预览
        var confirmed = await SuspendEmbeddedPrintPreviewAirspaceWhileAsync(() =>
            Task.FromResult(confirmWindow.ShowDialog() == true));
        if (!confirmed) return;
        var selectedPrinterName = confirmWindow.SelectedPrinterName;
        if (string.IsNullOrWhiteSpace(selectedPrinterName))
        {
            HandyControl.Controls.MessageBox.Warning("未选择打印机，已取消打印。");
            return;
        }

        BeginActionBusy("生成中...");
        try
        {
            IsLoading = true;
            var globalIndex = alreadyGenerated + 1;
            var baseBarcode = Entry.Barcode ?? "";
            var failCount = 0;
            var newCardCount = 0;
            var generatedCards = new List<MesXslRawMaterialCard>();
            // 按行收集成功标记：只要该行所有份都加卡成功，行 HasCard=true；
            // 中途任一份失败则保留 HasCard=false，下次再点「生成」时会重试该行
            var rowSuccessMap = new Dictionary<RawMaterialSplitDetailItem, bool>();

            foreach (var detail in pendingRows)
            {
                var portions = detail.Portions ?? 0;
                var rowAllOk = true;
                for (var i = 0; i < portions; i++)
                {
                    var card = new MesXslRawMaterialCard
                    {
                        // 关联到当前拆码明细行 — 便于「重新拆码」按此 ID 批删
                        SplitDetailId = detail.Id,
                        Barcode = baseBarcode + globalIndex.ToString("D3"),
                        BatchNo = Entry.BatchNo,
                        EntryDate = Entry.EntryTime?.Date ?? DateTime.Today,
                        MaterialId = Entry.MaterialId,
                        MaterialName = Entry.MaterialName,
                        SupplierId = Entry.SupplierId,
                        SupplierName = Entry.SupplierName,
                        ManufacturerMaterialName = Entry.ManufacturerMaterialName,
                        ShelfLife = Entry.ShelfLife,
                        TotalWeight = detail.PortionWeight.HasValue ? (decimal?)detail.PortionWeight.Value : null,
                        PackagingTare = detail.PackagingTare.HasValue ? (decimal?)detail.PackagingTare.Value : null,
                        PalletWeight = detail.PalletWeight.HasValue ? (decimal?)detail.PalletWeight.Value : null,
                        RemainingWeight = detail.PortionWeight.HasValue ? (decimal?)detail.PortionWeight.Value : null,
                        RemainingQuantity = detail.PortionPackages,
                        WarehouseArea = detail.WarehouseLocation,
                        UnloadOperator = Entry.UnloadOperator,
                        Status = "1",
                        TestResult = "0",
                        PriorityPickup = "0",
                        TenantId = Entry.TenantId
                    };
                    var ok = await _rawMaterialCardService.AddAsync(card);
                    if (ok)
                    {
                        newCardCount++;
                        generatedCards.Add(card);
                    }
                    else { failCount++; rowAllOk = false; }
                    globalIndex++;
                }
                rowSuccessMap[detail] = rowAllOk;
            }

            // 把整行加卡都成功的标记 HasCard=true（触发该行 UI 自动锁定 + 删除按钮隐藏 + 打印列显示「已打印」）
            foreach (var kv in rowSuccessMap)
            {
                if (kv.Value) kv.Key.HasCard = true;
            }

            // 整票级 PrintFlag：只要本批至少有一张卡片成功即置 1（与原行为兼容）。
            // 关键：必须先 ApplySplitDetailsToEntry()，把刚被设为 true 的 HasCard 序列化到 PortionCardFlags，
            // 否则下次重新打开时该行会回退为 false（PortionCardFlags 旧值未更新），从而被「继续拆码」流程误纳入待生成。
            if (newCardCount > 0)
            {
                Entry.PrintFlag = "1";
                ApplySplitDetailsToEntry();
                await EntryService.EditAsync(Entry);
                RaisePropertyChanged(nameof(Entry));
                RaisePropertyChanged(nameof(IsPrinted));
                RaisePropertyChanged(nameof(IsTotalWeightEditable));
                AddSplitDetailCommand.RaiseCanExecuteChanged();
            }
            RaisePropertyChanged(nameof(CanGenerateCards));
            RaisePropertyChanged(nameof(CanResplit));

            string? printError = null;
            if (newCardCount > 0 && generatedCards.Count > 0)
            {
                printError = await PrintGeneratedRawMaterialCardsAsync(selectedPrinterName, generatedCards);
                if (!string.IsNullOrWhiteSpace(printError))
                {
                    HandyControl.Controls.MessageBox.Warning($"卡片已生成 {newCardCount} 张，但打印存在异常：{printError}");
                }
            }

            if (failCount == 0)
            {
                if (string.IsNullOrWhiteSpace(printError))
                    HandyControl.Controls.MessageBox.Success($"已生成并打印 {newCardCount} 张原材料卡片（累计 {alreadyGenerated + newCardCount} 张），打印状态已更新为「已打印」！");
                else
                    HandyControl.Controls.MessageBox.Success($"已生成 {newCardCount} 张原材料卡片（累计 {alreadyGenerated + newCardCount} 张），打印状态已更新；请检查打印机后补打标签。");
            }
            else
                HandyControl.Controls.MessageBox.Warning($"本次共尝试生成 {newCardCount + failCount} 张，成功 {newCardCount} 张，失败 {failCount} 张。失败的行未标记为「已打印」，可检查网络后再次点击「生成原材料卡片」重试。");
        }
        catch (Exception ex)
        {
            HandyControl.Controls.MessageBox.Error($"生成原材料卡片失败：{ex.Message}");
        }
        finally
        {
            IsLoading = false;
            EndActionBusy();
        }
    }

    /// <summary>
    /// 生成原材料卡片前确保入场记录已有条码/批次号。
    /// 规则：条码优先沿用现有值；为空时调用入场服务生成（在线优先，离线本地兜底）；
    /// 批次号为空则回填为条码。
    /// </summary>
    private async Task<bool> EnsureEntryBarcodeAndBatchNoAsync()
    {
        if (Entry == null) return false;

        if (string.IsNullOrWhiteSpace(Entry.Barcode))
        {
            if (string.IsNullOrWhiteSpace(Entry.MaterialCode))
            {
                HandyControl.Controls.MessageBox.Warning("当前记录缺少物料编码，无法生成原材料卡片条码。");
                return false;
            }

            var code = await EntryService.GenerateBarcodeAsync(Entry.MaterialCode);
            if (string.IsNullOrWhiteSpace(code))
            {
                HandyControl.Controls.MessageBox.Warning("未能生成入场条码，请检查网络或稍后重试。");
                return false;
            }

            Entry.Barcode = code.Trim();
        }

        if (string.IsNullOrWhiteSpace(Entry.BatchNo))
        {
            Entry.BatchNo = Entry.Barcode;
        }

        RaisePropertyChanged(nameof(Entry));
        return true;
    }

    private List<RawMaterialCardGeneratePlanItem> BuildPlannedRawMaterialCards(
        MesXslRawMaterialEntry entry,
        IReadOnlyList<RawMaterialSplitDetailItem> pendingRows,
        int startIndex)
    {
        var list = new List<RawMaterialCardGeneratePlanItem>();
        var cursor = startIndex;
        var baseBarcode = entry.Barcode ?? string.Empty;
        foreach (var detail in pendingRows)
        {
            var portions = detail.Portions ?? 0;
            for (var i = 0; i < portions; i++)
            {
                var card = BuildRawMaterialCardFromDetail(entry, detail, baseBarcode + cursor.ToString("D3"));
                list.Add(new RawMaterialCardGeneratePlanItem
                {
                    Card = card,
                    DetailId = detail.Id,
                    SourceRowNo = SplitCodeDetails.IndexOf(detail) + 1
                });
                cursor++;
            }
        }
        return list;
    }

    private static MesXslRawMaterialCard BuildRawMaterialCardFromDetail(
        MesXslRawMaterialEntry entry,
        RawMaterialSplitDetailItem detail,
        string barcode)
    {
        return new MesXslRawMaterialCard
        {
            SplitDetailId = detail.Id,
            Barcode = barcode,
            BatchNo = entry.BatchNo,
            EntryDate = entry.EntryTime?.Date ?? DateTime.Today,
            MaterialId = entry.MaterialId,
            MaterialName = entry.MaterialName,
            SupplierId = entry.SupplierId,
            SupplierName = entry.SupplierName,
            ManufacturerMaterialName = entry.ManufacturerMaterialName,
            ShelfLife = entry.ShelfLife,
            TotalWeight = detail.PortionWeight.HasValue ? (decimal?)detail.PortionWeight.Value : null,
            PackagingTare = detail.PackagingTare.HasValue ? (decimal?)detail.PackagingTare.Value : null,
            PalletWeight = detail.PalletWeight.HasValue ? (decimal?)detail.PalletWeight.Value : null,
            RemainingWeight = detail.PortionWeight.HasValue ? (decimal?)detail.PortionWeight.Value : null,
            RemainingQuantity = detail.PortionPackages,
            WarehouseArea = detail.WarehouseLocation,
            UnloadOperator = entry.UnloadOperator,
            Status = "1",
            TestResult = "0",
            PriorityPickup = "0",
            TenantId = entry.TenantId
        };
    }

    private async Task<bool> EnsureRawMaterialCardTemplateLoadedAsync()
    {
        if (_rawMaterialCardTemplateLoaded && !string.IsNullOrWhiteSpace(_rawMaterialCardTemplateJson))
        {
            return true;
        }

        var bindList = _printBizTemplateBindService.GetCached();
        if (bindList.Count == 0)
        {
            try { bindList = await _printBizTemplateBindService.ListAsync().ConfigureAwait(false); } catch { /* 忽略 */ }
        }
        var bind = bindList.FirstOrDefault(x => string.Equals(x.TemplateCode, RawMaterialCardTemplateCode, StringComparison.OrdinalIgnoreCase))
                   ?? bindList.FirstOrDefault(x => (x.BizName ?? string.Empty).Contains("原材料卡片", StringComparison.OrdinalIgnoreCase));
        if (bind == null) return false;

        _rawMaterialCardFieldMappingJson = string.IsNullOrWhiteSpace(bind.FieldMappingJson) ? "[]" : bind.FieldMappingJson!;
        _rawMaterialCardTemplateCode = string.IsNullOrWhiteSpace(bind.TemplateCode) ? RawMaterialCardTemplateCode : bind.TemplateCode!;

        var templates = _printTemplateService.GetCached();
        if (templates.Count == 0)
        {
            try { templates = await _printTemplateService.ListAsync().ConfigureAwait(false); } catch { /* 忽略 */ }
        }
        var tpl = templates.FirstOrDefault(t => !string.IsNullOrWhiteSpace(bind.TemplateId) && string.Equals(t.Id, bind.TemplateId, StringComparison.OrdinalIgnoreCase))
                  ?? templates.FirstOrDefault(t => string.Equals(t.TemplateCode, _rawMaterialCardTemplateCode, StringComparison.OrdinalIgnoreCase));
        if (tpl == null || string.IsNullOrWhiteSpace(tpl.TemplateJson)) return false;

        _rawMaterialCardTemplateJson = tpl.TemplateJson!;
        _rawMaterialCardTemplateName = string.IsNullOrWhiteSpace(tpl.TemplateName) ? "原材料卡片" : tpl.TemplateName!;
        _rawMaterialCardTemplateLoaded = true;
        return true;
    }

    private string BuildRawMaterialCardPreviewHtml(RawMaterialCardGeneratePlanItem planItem)
    {
        try
        {
            var data = BuildRawMaterialCardPrintData(planItem.Card);
            return NativePrintRenderService.RenderToHtml(_rawMaterialCardTemplateJson, data, enableScreenAutoFit: false);
        }
        catch (Exception ex)
        {
            return BuildPrintPreviewErrorHtml($"模板预览失败：{ex.Message}");
        }
    }

    private JsonObject BuildRawMaterialCardPrintData(MesXslRawMaterialCard card)
    {
        JsonObject printData = new();
        JsonNode? bizRoot = JsonSerializer.SerializeToNode(card, PreviewSnapshotJsonOpts);
        try
        {
            var mappingNode = JsonNode.Parse(string.IsNullOrWhiteSpace(_rawMaterialCardFieldMappingJson) ? "[]" : _rawMaterialCardFieldMappingJson) as JsonArray;
            if (mappingNode != null)
            {
                foreach (var rule in mappingNode)
                {
                    if (rule is not JsonObject obj) continue;
                    var templateField = obj["templateField"]?.GetValue<string>()?.Trim();
                    if (string.IsNullOrWhiteSpace(templateField)) continue;
                    var bizField = obj["bizField"]?.GetValue<string>()?.Trim();
                    JsonNode? val = string.IsNullOrWhiteSpace(bizField)
                        ? JsonValue.Create(string.Empty)
                        : ResolvePath(bizRoot, bizField!);
                    var normalized = NormalizePreviewNodeValue(val);
                    SetPath(printData, templateField!, normalized);
                }
            }
        }
        catch
        {
            // 映射失败时降级为模板字段补空，不中断后续流程
        }

        try
        {
            var root = JsonNode.Parse(_rawMaterialCardTemplateJson);
            var fields = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
            CollectTemplateBindFields(root, fields);
            foreach (var key in fields)
            {
                if (!HasPath(printData, key))
                {
                    SetPath(printData, key, JsonValue.Create(string.Empty));
                }
            }
        }
        catch
        {
            // 忽略模板结构异常
        }
        return printData;
    }

    private async Task<string?> PrintGeneratedRawMaterialCardsAsync(string printerName, IReadOnlyList<MesXslRawMaterialCard> cards)
    {
        if (cards.Count == 0) return null;
        if (string.IsNullOrWhiteSpace(printerName)) return "未选择打印机";
        if (!await EnsureRawMaterialCardTemplateLoadedAsync()) return "未找到原材料卡片打印模板";

        var tpl = BuildPrintTemplateForRawMaterialCard(_rawMaterialCardTemplateJson);
        try
        {
            var idx = 0;
            foreach (var card in cards)
            {
                idx++;
                BeginActionBusy($"打印中（{idx}/{cards.Count}）...");
                var data = BuildRawMaterialCardPrintData(card);
                var html = NativePrintRenderService.RenderToHtml(_rawMaterialCardTemplateJson, data);
                var pdfBase64 = await HtmlToPdfRenderer.RenderAsync(
                    html,
                    tpl.PaperWidthMm ?? 210d,
                    tpl.PaperHeightMm ?? 297d);
                var jobName = string.IsNullOrWhiteSpace(card.Barcode) ? "原材料卡片" : $"原材料卡片-{card.Barcode}";
                await _printDotService.PrintAsync(printerName, pdfBase64, jobName, 1);
            }
            return null;
        }
        catch (Exception ex)
        {
            return ex.Message;
        }
    }

    private static PrintTemplate BuildPrintTemplateForRawMaterialCard(string? templateJson)
    {
        try
        {
            if (string.IsNullOrWhiteSpace(templateJson) || templateJson == "{}")
                return new PrintTemplate { TemplateName = "原材料卡片", TemplateCode = RawMaterialCardTemplateCode };
            var root = JsonDocument.Parse(templateJson).RootElement;
            double w = 210, h = 297;
            if (root.TryGetProperty("page", out var page))
            {
                if (page.TryGetProperty("width", out var wEl)) w = wEl.GetDouble();
                if (page.TryGetProperty("height", out var hEl)) h = hEl.GetDouble();
            }
            return new PrintTemplate
            {
                TemplateName = "原材料卡片",
                TemplateCode = RawMaterialCardTemplateCode,
                PaperWidthMm = w,
                PaperHeightMm = h,
                PaperOrientation = w > h ? "横向" : "纵向",
            };
        }
        catch
        {
            return new PrintTemplate { TemplateName = "原材料卡片", TemplateCode = RawMaterialCardTemplateCode };
        }
    }

    private void BeginActionBusy(string text)
    {
        ActionBusyText = string.IsNullOrWhiteSpace(text) ? "处理中..." : text;
        IsActionBusy = true;
    }

    private void EndActionBusy()
    {
        IsActionBusy = false;
        ActionBusyText = "处理中...";
    }

    /// <summary>页面卸载时停止轮询，避免后台仍请求已释放的 WebView。</summary>
    public void StopPrintPreviewTimer() => _printPreviewTimer.Stop();

    /// <summary>视图重新附加时恢复轮询（与 <see cref="StopPrintPreviewTimer"/> 配对）。</summary>
    public void StartPrintPreviewTimer()
    {
        if (!_printPreviewTimer.IsEnabled) _printPreviewTimer.Start();
    }

    private async Task OnPrintPreviewTickAsync()
    {
        if (!IsPrintPreviewExpanded || Entry == null || _printPreviewBusy) return;
        try
        {
            ApplySplitDetailsToEntry();
            var snap = JsonSerializer.Serialize(Entry, PreviewSnapshotJsonOpts);
            if (string.Equals(snap, _lastPreviewSnapshot, StringComparison.Ordinal)) return;
            _lastPreviewSnapshot = snap;
            _printPreviewBusy = true;
            PrintPreviewStatus = "更新预览中…";
            var myGen = ++_previewRequestGeneration;
            if (!await EnsureLocalPreviewTemplateLoadedAsync().ConfigureAwait(false))
            {
                PostPrintPreviewHtml(BuildPrintPreviewPlaceholderHtml("未找到本地打印模板缓存，请先联网完成一次“业务打印绑定/打印模板”同步。"));
                PrintPreviewStatus = "未找到本地模板缓存";
                return;
            }
            if (string.IsNullOrWhiteSpace(_previewTemplateJson) || _previewTemplateJson == "{}")
            {
                PostPrintPreviewHtml(BuildPrintPreviewPlaceholderHtml("尚未配置业务打印绑定或模板内容为空"));
                PrintPreviewStatus = "未配置模板";
                return;
            }
            var dataObj = BuildLocalPreviewData(Entry);
            if (myGen != _previewRequestGeneration) return;
            string html;
            try
            {
                // 实时预览关闭模板内部 fitPage 自适应，避免与 WebView2 外层缩放叠加后出现“越放大越小”。
                html = NativePrintRenderService.RenderToHtml(_previewTemplateJson, dataObj, enableScreenAutoFit: false);
            }
            catch (Exception ex)
            {
                html = BuildPrintPreviewErrorHtml(ex.Message);
                PrintPreviewStatus = "渲染失败";
                PostPrintPreviewHtml(html);
                return;
            }
            PostPrintPreviewHtml(html);
            PrintPreviewStatus = string.Empty;
        }
        catch (Exception ex)
        {
            PostPrintPreviewHtml(BuildPrintPreviewErrorHtml(ex.Message));
            PrintPreviewStatus = "预览异常";
        }
        finally
        {
            _printPreviewBusy = false;
        }
    }

    private void PostPrintPreviewHtml(string html)
    {
        var app = Application.Current;
        if (app?.Dispatcher == null)
        {
            PrintPreviewHtmlReady?.Invoke(this, html);
            return;
        }
        if (app.Dispatcher.CheckAccess()) PrintPreviewHtmlReady?.Invoke(this, html);
        else app.Dispatcher.Invoke(() => PrintPreviewHtmlReady?.Invoke(this, html));
    }

    private static string BuildPrintPreviewErrorHtml(string message)
    {
        var esc = WebUtility.HtmlEncode(message ?? string.Empty);
        return "<html><head><meta charset=\"utf-8\"/><style>"
             + "body{margin:0;background:#525659;display:flex;align-items:center;"
             + "justify-content:center;height:100vh;font-family:'Microsoft YaHei',Arial,sans-serif;}"
             + ".card{background:#fff;border-radius:8px;padding:28px 40px;text-align:center;"
             + "box-shadow:0 6px 24px rgba(0,0,0,.4);max-width:520px;}"
             + "</style></head><body><div class=\"card\">"
             + "<div style=\"font-size:36px;margin-bottom:10px\">⚠️</div>"
             + "<div style=\"font-size:13px;color:#e74c3c;word-break:break-all;\">预览：" + esc + "</div>"
             + "</div></body></html>";
    }

    private static string BuildPrintPreviewPlaceholderHtml(string tip)
    {
        var esc = WebUtility.HtmlEncode(tip ?? string.Empty);
        return "<html><head><meta charset=\"utf-8\"/><style>"
             + "body{margin:0;background:#525659;display:flex;align-items:center;justify-content:center;"
             + "height:100vh;font-family:'Microsoft YaHei',Arial,sans-serif;}"
             + ".card{background:#fff;border-radius:8px;padding:32px 48px;text-align:center;}"
             + "</style></head><body><div class=\"card\">"
             + "<div style=\"font-size:14px;color:#888;\">" + esc + "</div></div></body></html>";
    }

    private async Task<bool> EnsureLocalPreviewTemplateLoadedAsync()
    {
        if (_previewTemplateLoaded && !string.IsNullOrWhiteSpace(_previewTemplateJson))
        {
            return true;
        }
        // 离线优先用本地缓存；若当前在线再尝试刷新缓存
        var bindList = _printBizTemplateBindService.GetCached();
        if (bindList.Count == 0)
        {
            try { bindList = await _printBizTemplateBindService.ListAsync().ConfigureAwait(false); } catch { /* 忽略 */ }
        }
        var bind = bindList.FirstOrDefault(x => string.Equals(x.BizCode, RawMaterialEntryBizCode, StringComparison.OrdinalIgnoreCase))
                   ?? bindList.FirstOrDefault(x => string.Equals(x.TemplateCode, RawMaterialEntryTemplateCode, StringComparison.OrdinalIgnoreCase))
                   ?? bindList.FirstOrDefault(x =>
                       (x.BizName ?? string.Empty).Contains("原料入场记录", StringComparison.OrdinalIgnoreCase)
                       || (x.BizName ?? string.Empty).Contains("原材料流转卡片", StringComparison.OrdinalIgnoreCase));
        if (bind == null) return false;

        _previewFieldMappingJson = string.IsNullOrWhiteSpace(bind.FieldMappingJson) ? "[]" : bind.FieldMappingJson!;
        _previewTemplateCode = string.IsNullOrWhiteSpace(bind.TemplateCode) ? RawMaterialEntryTemplateCode : bind.TemplateCode!;

        var templates = _printTemplateService.GetCached();
        if (templates.Count == 0)
        {
            try { templates = await _printTemplateService.ListAsync().ConfigureAwait(false); } catch { /* 忽略 */ }
        }
        var tpl = templates.FirstOrDefault(t => !string.IsNullOrWhiteSpace(bind.TemplateId) && string.Equals(t.Id, bind.TemplateId, StringComparison.OrdinalIgnoreCase))
                  ?? templates.FirstOrDefault(t => string.Equals(t.TemplateCode, _previewTemplateCode, StringComparison.OrdinalIgnoreCase));
        if (tpl == null || string.IsNullOrWhiteSpace(tpl.TemplateJson)) return false;

        _previewTemplateJson = tpl.TemplateJson!;
        _previewTemplateName = string.IsNullOrWhiteSpace(tpl.TemplateName) ? "原料入场记录" : tpl.TemplateName!;
        _previewTemplateLoaded = true;
        return true;
    }

    private JsonObject BuildLocalPreviewData(MesXslRawMaterialEntry entry)
    {
        JsonObject printData = new();
        JsonNode? bizRoot = JsonSerializer.SerializeToNode(entry, PreviewSnapshotJsonOpts);
        try
        {
            var mappingNode = JsonNode.Parse(string.IsNullOrWhiteSpace(_previewFieldMappingJson) ? "[]" : _previewFieldMappingJson) as JsonArray;
            if (mappingNode != null)
            {
                foreach (var rule in mappingNode)
                {
                    try
                    {
                        if (rule is not JsonObject obj) continue;
                        var templateField = obj["templateField"]?.GetValue<string>()?.Trim();
                        if (string.IsNullOrWhiteSpace(templateField)) continue;
                        var bizField = obj["bizField"]?.GetValue<string>()?.Trim();
                        JsonNode? val = string.IsNullOrWhiteSpace(bizField)
                            ? JsonValue.Create(string.Empty)
                            : ResolvePath(bizRoot, bizField!);
                        // JsonNode 不能同时挂在两个父节点，必须深拷贝后再写入 printData
                        var normalized = NormalizePreviewNodeValue(val);
                        SetPath(printData, templateField!, normalized);
                    }
                    catch
                    {
                        // 单条映射异常不应影响其余字段，继续后续规则
                    }
                }
            }
        }
        catch
        {
            // 忽略 mapping JSON 异常，继续尝试按模板字段补空
        }

        try
        {
            var root = JsonNode.Parse(_previewTemplateJson);
            var fields = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
            CollectTemplateBindFields(root, fields);
            foreach (var key in fields)
            {
                if (!HasPath(printData, key))
                {
                    SetPath(printData, key, JsonValue.Create(string.Empty));
                }
            }
        }
        catch
        {
            // 模板异常时忽略补齐
        }

        return printData;
    }

    private static void CollectTemplateBindFields(JsonNode? node, HashSet<string> fields)
    {
        if (node == null) return;
        if (node is JsonObject obj)
        {
            if (obj["dataBinding"] is JsonObject db && db["params"] is JsonArray paramsArr)
            {
                foreach (var p in paramsArr)
                {
                    var key = p?["key"]?.GetValue<string>()?.Trim();
                    if (!string.IsNullOrWhiteSpace(key)) fields.Add(key!);
                }
            }
            var bindField = obj["bindField"]?.GetValue<string>()?.Trim();
            if (!string.IsNullOrWhiteSpace(bindField)) fields.Add(bindField!);
            if (obj["columns"] is JsonArray cols)
            {
                foreach (var c in cols)
                {
                    var cBind = c?["bindField"]?.GetValue<string>()?.Trim();
                    var cField = c?["field"]?.GetValue<string>()?.Trim();
                    if (!string.IsNullOrWhiteSpace(cBind)) fields.Add(cBind!);
                    else if (!string.IsNullOrWhiteSpace(cField)) fields.Add(cField!);
                }
            }
            foreach (var kv in obj) CollectTemplateBindFields(kv.Value, fields);
            return;
        }
        if (node is JsonArray arr)
        {
            foreach (var item in arr) CollectTemplateBindFields(item, fields);
        }
    }

    private static bool HasPath(JsonObject root, string path)
    {
        var parts = path.Split('.', StringSplitOptions.RemoveEmptyEntries);
        JsonNode? cur = root;
        for (int i = 0; i < parts.Length; i++)
        {
            if (cur is not JsonObject obj) return false;
            if (!obj.TryGetPropertyValue(parts[i], out cur)) return false;
            if (i == parts.Length - 1) return true;
        }
        return false;
    }

    private static JsonNode? ResolvePath(JsonNode? root, string path)
    {
        if (root == null || string.IsNullOrWhiteSpace(path)) return null;
        var parts = path.Split('.', StringSplitOptions.RemoveEmptyEntries);
        JsonNode? cur = root;
        foreach (var p in parts)
        {
            if (cur == null) return null;
            if (cur is JsonArray arr)
            {
                if (int.TryParse(p, out var idx))
                {
                    cur = idx >= 0 && idx < arr.Count ? arr[idx] : null;
                }
                else
                {
                    cur = arr.Count > 0 ? arr[0]?[p] : null;
                }
            }
            else
            {
                cur = cur[p];
            }
        }
        return cur;
    }

    /// <summary>
    /// 本地实时预览与后端保持一致：DateTime/DateTimeOffset 统一输出 yyyy-MM-dd HH:mm:ss（不带时区后缀）。
    /// </summary>
    private static JsonNode NormalizePreviewNodeValue(JsonNode? node)
    {
        if (node == null) return JsonValue.Create(string.Empty)!;

        if (node is JsonValue v)
        {
            if (v.TryGetValue<DateTime>(out var dt))
            {
                return JsonValue.Create(dt.ToString("yyyy-MM-dd HH:mm:ss"))!;
            }
            if (v.TryGetValue<DateTimeOffset>(out var dto))
            {
                return JsonValue.Create(dto.ToLocalTime().ToString("yyyy-MM-dd HH:mm:ss"))!;
            }
            if (v.TryGetValue<string>(out var s) && !string.IsNullOrWhiteSpace(s))
            {
                // 仅处理明显的 ISO 时间串，避免误伤普通文本
                if ((s.Contains('T') || s.EndsWith("Z", StringComparison.OrdinalIgnoreCase) || s.Contains('+'))
                    && DateTimeOffset.TryParse(s, out var parsed))
                {
                    return JsonValue.Create(parsed.ToLocalTime().ToString("yyyy-MM-dd HH:mm:ss"))!;
                }
            }
        }

        return node.DeepClone();
    }

    private static void SetPath(JsonObject target, string path, JsonNode value)
    {
        var parts = path.Split('.', StringSplitOptions.RemoveEmptyEntries);
        if (parts.Length == 0) return;
        JsonObject cur = target;
        for (int i = 0; i < parts.Length - 1; i++)
        {
            if (cur[parts[i]] is not JsonObject child)
            {
                child = new JsonObject();
                cur[parts[i]] = child;
            }
            cur = child;
        }
        cur[parts[^1]] = value;
    }

    private void LoadLayoutState()
    {
        try
        {
            if (!File.Exists(LayoutFilePath)) return;
            var json = File.ReadAllText(LayoutFilePath);
            var dto = JsonSerializer.Deserialize<AddPageLayoutDto>(json, LayoutJsonOpts);
            if (dto == null) return;
            if (dto.ExpandedWidth is > 0 and < 2000)
                _expandedRightPanelWidth = Math.Clamp(dto.ExpandedWidth.Value, 200, 560);
            if (dto.IsExpanded.HasValue)
                _isRightPanelExpanded = dto.IsExpanded.Value;
            RaisePropertyChanged(nameof(ExpandedRightPanelWidth));
            RaisePropertyChanged(nameof(IsRightPanelExpanded));
        }
        catch { /* 布局文件损坏时忽略 */ }
    }

    private void SaveLayoutState()
    {
        try
        {
            var dir = Path.GetDirectoryName(LayoutFilePath);
            if (!string.IsNullOrEmpty(dir))
                Directory.CreateDirectory(dir);
            var dto = new AddPageLayoutDto
            {
                ExpandedWidth = _expandedRightPanelWidth,
                IsExpanded = _isRightPanelExpanded
            };
            File.WriteAllText(LayoutFilePath, JsonSerializer.Serialize(dto, LayoutJsonOpts));
        }
        catch { /* 写本地失败时不影响业务 */ }
    }

    private sealed class AddPageLayoutDto
    {
        public double? ExpandedWidth { get; set; }
        public bool? IsExpanded { get; set; }
    }

    public sealed class RawMaterialCardGeneratePlanItem
    {
        public required MesXslRawMaterialCard Card { get; init; }
        public required string DetailId { get; init; }
        public int SourceRowNo { get; init; }
    }
}