using HandyControl.Controls;
using HandyControl.Tools.Extension;
using System.Collections.ObjectModel;
using YY.Admin.Core;
using YY.Admin.Core.Entity;
using YY.Admin.Core.Services;
using YY.Admin.Services.Service;
using YY.Admin.Views.RawMaterialEntry;

namespace YY.Admin.ViewModels.RawMaterialEntry;

public class RawMaterialEntryEditDialogViewModel : BaseViewModel, IDialogResultable<bool>
{
    private readonly IRawMaterialEntryService _entryService;
    private readonly IJeecgDictSyncService _dictSyncService;
    private readonly IMixerMaterialService _mixerMaterialService;

    // 加载完物料后用于回填 Edit 模式选中项
    private string? _pendingMaterialId;

    private MesXslRawMaterialEntry? _entry;
    public MesXslRawMaterialEntry? Entry
    {
        get => _entry;
        set => SetProperty(ref _entry, value);
    }

    private MesMixerMaterial? _selectedMaterial;
    public MesMixerMaterial? SelectedMaterial
    {
        get => _selectedMaterial;
        set
        {
            if (!SetProperty(ref _selectedMaterial, value) || value == null || Entry == null) return;
            Entry.MaterialId = value.Id;
            Entry.MaterialCode = value.MaterialCode;
            Entry.MaterialName = value.MaterialName;
            Entry.ManufacturerMaterialName = value.AliasName;
            RecalculateShelfLife(value);
            RaisePropertyChanged(nameof(Entry));
            RaisePropertyChanged(nameof(SelectedMaterialDisplay));
            RaisePropertyChanged(nameof(HasSelectedMaterial));

            // 新增模式自动生成条码/批次号
            if (IsAddMode && !string.IsNullOrEmpty(value.MaterialCode))
                _ = AutoGenerateBarcodeAsync(value.MaterialCode);
        }
    }

    private bool _isGenerating;
    public bool IsGenerating
    {
        get => _isGenerating;
        set => SetProperty(ref _isGenerating, value);
    }

    public bool IsAddMode => string.IsNullOrWhiteSpace(Entry?.Id);
    public string DialogTitle => IsAddMode ? "新增原料入场记录" : "编辑原料入场记录";
    public string SelectedMaterialDisplay => _selectedMaterial == null
        ? "请选择密炼物料"
        : $"[{_selectedMaterial.MaterialCode}]  {_selectedMaterial.MaterialName}";
    public bool HasSelectedMaterial => _selectedMaterial != null;

    public string? IsSpecialAdoptionValue
    {
        get => Entry?.IsSpecialAdoption;
        set
        {
            if (Entry == null || Entry.IsSpecialAdoption == value)
            {
                return;
            }

            Entry.IsSpecialAdoption = value;
            if (!string.Equals(value, "1", StringComparison.Ordinal))
            {
                Entry.SpecialAdoptionOperator = null;
                Entry.SpecialAdoptionTime = null;
                Entry.SpecialAdoptionReason = null;
            }

            RaisePropertyChanged(nameof(Entry));
            RaisePropertyChanged(nameof(IsSpecialAdoptionValue));
        }
    }

    public double? TotalWeightInput
    {
        get => Entry?.TotalWeight;
        set
        {
            if (Entry == null || Entry.TotalWeight == value) return;
            Entry.TotalWeight = value;
            RecalculatePortionWeight();
            RaisePropertyChanged(nameof(Entry));
        }
    }

    public int? TotalPortionsInput
    {
        get => Entry?.TotalPortions;
        set
        {
            if (Entry == null || Entry.TotalPortions == value) return;
            Entry.TotalPortions = value;
            RecalculatePortionWeight();
            RaisePropertyChanged(nameof(Entry));
        }
    }

    public ObservableCollection<MesMixerMaterial> MaterialOptions { get; } = new();
    public ObservableCollection<KeyValuePair<string, string>> TestResultOptions { get; } = new();
    public ObservableCollection<KeyValuePair<string, string>> TestStatusOptions { get; } = new();
    public ObservableCollection<KeyValuePair<string, string>> PrintFlagOptions { get; } = new();
    public ObservableCollection<KeyValuePair<string, string>> StockBalanceOptions { get; } = new();
    public ObservableCollection<KeyValuePair<string, string>> IsSpecialAdoptionOptions { get; } = new();
    public ObservableCollection<KeyValuePair<string, string>> StatusOptions { get; } = new();
    public ObservableCollection<RawMaterialSplitDetailItem> SplitCodeDetails { get; } = new();
    public double SplitCodeTableHeight => CalculateSplitCodeTableHeight();

    private bool _result;
    public bool Result { get => _result; set => SetProperty(ref _result, value); }
    public Action? CloseAction { get; set; }

    public DelegateCommand SaveCommand { get; }
    public DelegateCommand CancelCommand { get; }
    public DelegateCommand ResetCommand { get; }
    public DelegateCommand AddSplitDetailCommand { get; }
    public DelegateCommand<RawMaterialSplitDetailItem> RemoveSplitDetailCommand { get; }
    public DelegateCommand OpenMaterialPickerCommand { get; }
    public DelegateCommand ClearMaterialCommand { get; }
    public DelegateCommand OpenWeightRecordPickerCommand { get; }
    public DelegateCommand ClearWeightRecordCommand { get; }

    public RawMaterialEntryEditDialogViewModel(
        IRawMaterialEntryService entryService,
        IJeecgDictSyncService dictSyncService,
        IMixerMaterialService mixerMaterialService,
        IContainerExtension container,
        IRegionManager regionManager) : base(container, regionManager)
    {
        _entryService = entryService;
        _dictSyncService = dictSyncService;
        _mixerMaterialService = mixerMaterialService;
        SaveCommand = new DelegateCommand(async () => await SaveAsync());
        CancelCommand = new DelegateCommand(() => CloseAction?.Invoke());
        ResetCommand = new DelegateCommand(InitializeForAdd);
        AddSplitDetailCommand = new DelegateCommand(AddSplitDetailRow);
        RemoveSplitDetailCommand = new DelegateCommand<RawMaterialSplitDetailItem>(RemoveSplitDetailRow);
        OpenMaterialPickerCommand = new DelegateCommand(async () => await OpenMaterialPickerAsync());
        ClearMaterialCommand = new DelegateCommand(ClearMaterialSelection);
        OpenWeightRecordPickerCommand = new DelegateCommand(async () => await OpenWeightRecordPickerAsync());
        ClearWeightRecordCommand = new DelegateCommand(ClearWeightRecordSelection);
        SplitCodeDetails.CollectionChanged += (_, _) => RaisePropertyChanged(nameof(SplitCodeTableHeight));
        _ = LoadAllAsync();
    }

    private async Task LoadAllAsync()
    {
        await Task.WhenAll(LoadDictOptionsAsync(), LoadMaterialOptionsAsync());
    }

    private async Task LoadMaterialOptionsAsync()
    {
        try
        {
            // 每次打开弹窗都主动拉一次，确保直接写库的数据也能同步到
            await _mixerMaterialService.SyncFromRemoteAsync();
            var result = await _mixerMaterialService.PageAsync(1, 2000);
            MaterialOptions.Clear();
            foreach (var m in result.Records)
                MaterialOptions.Add(m);

            // Edit 模式：物料加载完后回填选中项
            if (_pendingMaterialId != null)
            {
                var match = MaterialOptions.FirstOrDefault(m =>
                    string.Equals(m.Id, _pendingMaterialId, StringComparison.OrdinalIgnoreCase));
                if (match != null)
                    SelectedMaterial = match;
                _pendingMaterialId = null;
            }
        }
        catch { /* 无法加载物料列表时不阻断表单 */ }
    }

    private async Task LoadDictOptionsAsync()
    {
        try
        {
            var testResultOpts = await _dictSyncService.GetDictOptionsAsync("xslmes_test_result");
            var testStatusOpts = await _dictSyncService.GetDictOptionsAsync("xslmes_test_status");
            var printFlagOpts  = await _dictSyncService.GetDictOptionsAsync("xslmes_print_flag");
            var ynOpts         = await _dictSyncService.GetDictOptionsAsync("yn");
            var statusOpts     = await _dictSyncService.GetDictOptionsAsync("xslmes_entry_status");

            PopulateOptions(TestResultOptions, testResultOpts, new[]
            {
                new KeyValuePair<string, string>("未检", "0"),
                new KeyValuePair<string, string>("合格", "1"),
                new KeyValuePair<string, string>("不合格", "2"),
            });
            PopulateOptions(TestStatusOptions, testStatusOpts, new[]
            {
                new KeyValuePair<string, string>("送样", "0"),
                new KeyValuePair<string, string>("已批准", "1"),
            });
            PopulateOptions(PrintFlagOptions, printFlagOpts, new[]
            {
                new KeyValuePair<string, string>("未打印", "0"),
                new KeyValuePair<string, string>("已打印", "1"),
            });
            PopulateOptions(StockBalanceOptions, ynOpts, new[]
            {
                new KeyValuePair<string, string>("否", "0"),
                new KeyValuePair<string, string>("是", "1"),
            });
            PopulateOptions(IsSpecialAdoptionOptions, ynOpts, new[]
            {
                new KeyValuePair<string, string>("否", "0"),
                new KeyValuePair<string, string>("是", "1"),
            });
            PopulateOptions(StatusOptions, statusOpts, Array.Empty<KeyValuePair<string, string>>());
            ApplyDefaultEntryStatusForAdd();
        }
        catch
        {
            FillFallbackOptions();
            ApplyDefaultEntryStatusForAdd();
        }
    }

    private static void PopulateOptions(
        ObservableCollection<KeyValuePair<string, string>> target,
        IEnumerable<KeyValuePair<string, string>> items,
        IEnumerable<KeyValuePair<string, string>> fallback)
    {
        target.Clear();
        var list = items.ToList();
        foreach (var item in list.Count > 0 ? list : fallback.ToList())
            target.Add(item);
    }

    private void FillFallbackOptions()
    {
        PopulateOptions(TestResultOptions, Array.Empty<KeyValuePair<string, string>>(), new[]
        {
            new KeyValuePair<string, string>("未检", "0"),
            new KeyValuePair<string, string>("合格", "1"),
            new KeyValuePair<string, string>("不合格", "2"),
        });
        PopulateOptions(TestStatusOptions, Array.Empty<KeyValuePair<string, string>>(), new[]
        {
            new KeyValuePair<string, string>("送样", "0"),
            new KeyValuePair<string, string>("已批准", "1"),
        });
        PopulateOptions(PrintFlagOptions, Array.Empty<KeyValuePair<string, string>>(), new[]
        {
            new KeyValuePair<string, string>("未打印", "0"),
            new KeyValuePair<string, string>("已打印", "1"),
        });
        var ynDefault = new[] { new KeyValuePair<string, string>("否", "0"), new KeyValuePair<string, string>("是", "1") };
        PopulateOptions(StockBalanceOptions, Array.Empty<KeyValuePair<string, string>>(), ynDefault);
        PopulateOptions(IsSpecialAdoptionOptions, Array.Empty<KeyValuePair<string, string>>(), ynDefault);
    }

    private async Task AutoGenerateBarcodeAsync(string materialCode)
    {
        IsGenerating = true;
        try
        {
            var code = await _entryService.GenerateBarcodeAsync(materialCode);
            if (!string.IsNullOrEmpty(code) && Entry != null)
            {
                Entry.Barcode  = code;
                Entry.BatchNo  = code;
                RaisePropertyChanged(nameof(Entry));
            }
        }
        finally { IsGenerating = false; }
    }

    public void InitializeForAdd()
    {
        _selectedMaterial = null;
        RaisePropertyChanged(nameof(SelectedMaterial));
        RaisePropertyChanged(nameof(SelectedMaterialDisplay));
        RaisePropertyChanged(nameof(HasSelectedMaterial));
        Entry = new MesXslRawMaterialEntry
        {
            EntryTime = DateTime.Now,
            IsSpecialAdoption = "0"
        };
        InitializeSplitCodeDetailsFromEntry();
        ApplyDefaultEntryStatusForAdd();
        RaisePropertyChanged(nameof(IsAddMode));
        RaisePropertyChanged(nameof(DialogTitle));
        RaisePropertyChanged(nameof(TotalWeightInput));
        RaisePropertyChanged(nameof(TotalPortionsInput));
        RaisePropertyChanged(nameof(IsSpecialAdoptionValue));
    }

    public void InitializeForEdit(MesXslRawMaterialEntry entry)
    {
        Entry = new MesXslRawMaterialEntry
        {
            Id = entry.Id, Barcode = entry.Barcode, BatchNo = entry.BatchNo, EntryTime = entry.EntryTime,
            WeightRecordId = entry.WeightRecordId, BillNo = entry.BillNo,
            MaterialId = entry.MaterialId, MaterialCode = entry.MaterialCode, MaterialName = entry.MaterialName,
            SupplyCustomer = entry.SupplyCustomer, SupplierId = entry.SupplierId, SupplierName = entry.SupplierName,
            ManufacturerMaterialName = entry.ManufacturerMaterialName,
            ShelfLife = entry.ShelfLife, TotalWeight = entry.TotalWeight, TotalPortions = entry.TotalPortions,
            PortionWeight = entry.PortionWeight, PortionPackages = entry.PortionPackages,
            TestResult = entry.TestResult, TestStatus = entry.TestStatus, PrintFlag = entry.PrintFlag,
            StockBalance = entry.StockBalance, WarehouseLocation = entry.WarehouseLocation,
            UnloadOperator = entry.UnloadOperator, IsSpecialAdoption = entry.IsSpecialAdoption,
            SpecialAdoptionOperator = entry.SpecialAdoptionOperator, SpecialAdoptionTime = entry.SpecialAdoptionTime,
            SpecialAdoptionReason = entry.SpecialAdoptionReason, Status = entry.Status, Remark = entry.Remark,
            TenantId = entry.TenantId,
        };
        InitializeSplitCodeDetailsFromEntry();

        // 若物料列表已加载则直接回填，否则记录 pending 等加载完后回填
        if (MaterialOptions.Count > 0)
        {
            _selectedMaterial = MaterialOptions.FirstOrDefault(m =>
                string.Equals(m.Id, entry.MaterialId, StringComparison.OrdinalIgnoreCase));
            RaisePropertyChanged(nameof(SelectedMaterial));
            RaisePropertyChanged(nameof(SelectedMaterialDisplay));
            RaisePropertyChanged(nameof(HasSelectedMaterial));
        }
        else
        {
            _pendingMaterialId = entry.MaterialId;
        }

        RaisePropertyChanged(nameof(IsAddMode));
        RaisePropertyChanged(nameof(DialogTitle));
        RaisePropertyChanged(nameof(TotalWeightInput));
        RaisePropertyChanged(nameof(TotalPortionsInput));
        RaisePropertyChanged(nameof(IsSpecialAdoptionValue));
    }

    private async Task SaveAsync()
    {
        if (Entry == null) return;
        try
        {
            ApplyFirstSplitDetailToEntry();
            RecalculatePortionWeight();
            bool ok;
            if (IsAddMode)
            {
                ok = await _entryService.AddAsync(Entry);
                if (ok) HandyControl.Controls.MessageBox.Success("新增成功！");
                else { HandyControl.Controls.MessageBox.Error("新增失败！"); return; }
            }
            else
            {
                ok = await _entryService.EditAsync(Entry);
                if (!ok) { HandyControl.Controls.MessageBox.Error("编辑失败！"); return; }
            }
            Result = ok;
            if (IsAddMode && CloseAction == null)
            {
                // 独立新增页面：保存成功后自动清空表单，便于连续录入
                InitializeForAdd();
                return;
            }

            CloseAction?.Invoke();
        }
        catch (Exception ex)
        {
            HandyControl.Controls.MessageBox.Error($"操作失败：{ex.Message}");
        }
    }

    private async Task OpenWeightRecordPickerAsync()
    {
        WeightRecordPickerDialogViewModel? pickerVm = null;
        bool confirmed;
        try
        {
            confirmed = await HandyControl.Controls.Dialog.Show<WeightRecordPickerDialogView>()
                .Initialize<WeightRecordPickerDialogViewModel>(vm =>
                {
                    pickerVm = vm;
                    vm.Initialize(Entry?.BillNo);
                })
                .GetResultAsync<bool>();
        }
        catch
        {
            return;
        }

        if (!confirmed || pickerVm?.SelectedRecord == null || Entry == null)
        {
            return;
        }

        var selected = pickerVm.SelectedRecord;
        Entry.WeightRecordId = selected.Id;
        Entry.BillNo = selected.BillNo;
        Entry.SupplierName = selected.SenderUnit;
        Entry.SupplierId = null;
        RaisePropertyChanged(nameof(Entry));
    }

    private async Task OpenMaterialPickerAsync()
    {
        RawMaterialEntryMaterialPickerDialogViewModel? pickerVm = null;
        bool confirmed;
        try
        {
            confirmed = await HandyControl.Controls.Dialog.Show<RawMaterialEntryMaterialPickerDialogView>()
                .Initialize<RawMaterialEntryMaterialPickerDialogViewModel>(vm =>
                {
                    pickerVm = vm;
                    vm.Initialize(Entry?.MaterialCode, Entry?.MaterialName);
                })
                .GetResultAsync<bool>();
        }
        catch
        {
            return;
        }

        if (!confirmed || pickerVm?.SelectedMaterial == null)
        {
            return;
        }

        SelectedMaterial = pickerVm.SelectedMaterial;
    }

    private void ClearMaterialSelection()
    {
        _selectedMaterial = null;
        RaisePropertyChanged(nameof(SelectedMaterial));
        RaisePropertyChanged(nameof(SelectedMaterialDisplay));
        RaisePropertyChanged(nameof(HasSelectedMaterial));

        if (Entry == null)
        {
            return;
        }

        Entry.MaterialId = null;
        Entry.MaterialCode = null;
        Entry.MaterialName = null;
        Entry.ManufacturerMaterialName = null;
        Entry.ShelfLife = null;
        RaisePropertyChanged(nameof(Entry));
    }

    private void ClearWeightRecordSelection()
    {
        if (Entry == null)
        {
            return;
        }

        Entry.WeightRecordId = null;
        Entry.BillNo = null;
        Entry.SupplierId = null;
        Entry.SupplierName = null;
        RaisePropertyChanged(nameof(Entry));
    }

    private void RecalculateShelfLife(MesMixerMaterial? material)
    {
        if (Entry == null || material?.ShelfLifeDays == null || material.ShelfLifeDays <= 0)
        {
            return;
        }

        Entry.ShelfLife = DateTime.Now.Date.AddDays(material.ShelfLifeDays.Value).ToString("yyyy-MM-dd");
    }

    private void RecalculatePortionWeight()
    {
        if (Entry == null)
        {
            return;
        }

        if (Entry.TotalWeight.HasValue && Entry.TotalPortions.HasValue && Entry.TotalPortions.Value > 0)
        {
            Entry.PortionWeight = Math.Round(Entry.TotalWeight.Value / Entry.TotalPortions.Value, 2, MidpointRounding.AwayFromZero);
            return;
        }

        Entry.PortionWeight = null;
    }

    private void ApplyDefaultEntryStatusForAdd()
    {
        if (!IsAddMode || Entry == null || !string.IsNullOrWhiteSpace(Entry.Status))
        {
            return;
        }

        var pending = StatusOptions.FirstOrDefault(x =>
            string.Equals(x.Key?.Trim(), "待处理", StringComparison.OrdinalIgnoreCase));
        if (!string.IsNullOrWhiteSpace(pending.Value))
        {
            Entry.Status = pending.Value;
            return;
        }

        // 字典未就绪时使用常见默认值
        Entry.Status = "0";
    }

    private void InitializeSplitCodeDetailsFromEntry()
    {
        SplitCodeDetails.Clear();
        SplitCodeDetails.Add(new RawMaterialSplitDetailItem
        {
            Portions = Entry?.TotalPortions,
            PortionWeight = Entry?.PortionWeight,
            PortionPackages = Entry?.PortionPackages,
            WarehouseLocation = Entry?.WarehouseLocation
        });
        RaisePropertyChanged(nameof(SplitCodeTableHeight));
    }

    private void AddSplitDetailRow()
    {
        SplitCodeDetails.Add(new RawMaterialSplitDetailItem());
        RaisePropertyChanged(nameof(SplitCodeTableHeight));
    }

    private void RemoveSplitDetailRow(RawMaterialSplitDetailItem? item)
    {
        if (item == null)
        {
            return;
        }

        SplitCodeDetails.Remove(item);
        if (SplitCodeDetails.Count == 0)
        {
            SplitCodeDetails.Add(new RawMaterialSplitDetailItem());
        }
        RaisePropertyChanged(nameof(SplitCodeTableHeight));
    }

    private void ApplyFirstSplitDetailToEntry()
    {
        if (Entry == null || SplitCodeDetails.Count == 0)
        {
            return;
        }

        var first = SplitCodeDetails[0];
        Entry.TotalPortions = first.Portions;
        Entry.PortionWeight = first.PortionWeight;
        Entry.PortionPackages = first.PortionPackages;
        Entry.WarehouseLocation = first.WarehouseLocation;
    }

    private double CalculateSplitCodeTableHeight()
    {
        const double headerHeight = 36d;
        const double rowHeight = 36d;
        const double framePadding = 16d;
        const double minRows = 1d;
        const double maxRows = 6d;
        var rowCount = Math.Clamp(SplitCodeDetails.Count, (int)minRows, (int)maxRows);
        return headerHeight + rowCount * rowHeight + framePadding;
    }
}

public class RawMaterialSplitDetailItem : BindableBase
{
    private int? _portions;
    public int? Portions
    {
        get => _portions;
        set => SetProperty(ref _portions, value);
    }

    private double? _portionWeight;
    public double? PortionWeight
    {
        get => _portionWeight;
        set => SetProperty(ref _portionWeight, value);
    }

    private int? _portionPackages;
    public int? PortionPackages
    {
        get => _portionPackages;
        set => SetProperty(ref _portionPackages, value);
    }

    private string? _warehouseLocation;
    public string? WarehouseLocation
    {
        get => _warehouseLocation;
        set => SetProperty(ref _warehouseLocation, value);
    }
}