using System.Collections.ObjectModel;
using Avalonia.Controls;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using Sln.Wcs.Business;
using Sln.Wcs.Repository.service;

namespace Sln.Wcs.UI.ViewModels.Task;

public partial class CreateTaskViewModel : ObservableObject
{
    private readonly TaskCreateService _taskCreateService;
    private readonly ILiveTaskQueueService _taskQueueService;

    public string PageTitle => "手动创建任务";

    // ---- 起点 ----
    [ObservableProperty] private int _startBuilding = 13;
    [ObservableProperty] private int _startFloor = 1;
    [ObservableProperty] private string _startLocation = "01";

    // ---- 终点 ----
    [ObservableProperty] private int _endBuilding = 15;
    [ObservableProperty] private int _endFloor = 5;
    [ObservableProperty] private string _endLocation = "01";

    // ---- 任务属性 ----
    [ObservableProperty] private int _taskType = 1;
    [ObservableProperty] private int _taskCategory = 1;
    [ObservableProperty] private string _palletBarcode = string.Empty;
    [ObservableProperty] private string _materialCode = string.Empty;

    // ---- 下拉选项 ----
    public ObservableCollection<TaskAttributeOption> TaskTypeOptions { get; } = new()
    {
        new() { Value = 1, Display = "1 - 入库" },
        new() { Value = 2, Display = "2 - 出库" },
    };

    public ObservableCollection<TaskAttributeOption> TaskCategoryOptions { get; } = new()
    {
        new() { Value = 1, Display = "1 - 包材" },
        new() { Value = 2, Display = "2 - 成品" },
        new() { Value = 3, Display = "3 - 托盘" },
    };

    [ObservableProperty]
    private TaskAttributeOption _selectedTaskType;

    [ObservableProperty]
    private TaskAttributeOption _selectedTaskCategory;

    partial void OnSelectedTaskTypeChanged(TaskAttributeOption? value)
    {
        if (value is not null) TaskType = value.Value;
    }

    partial void OnSelectedTaskCategoryChanged(TaskAttributeOption? value)
    {
        if (value is not null) TaskCategory = value.Value;
    }

    // ---- 手动操作选项 ----
    [ObservableProperty] private bool _manualPutIn;
    [ObservableProperty] private bool _manualTakeOut;

    // ---- 状态 ----
    [ObservableProperty] private string _statusText = string.Empty;
    [ObservableProperty] private bool _isBusy;

    public CreateTaskViewModel(TaskCreateService taskCreateService, ILiveTaskQueueService taskQueueService)
    {
        _taskCreateService = taskCreateService;
        _taskQueueService = taskQueueService;
        _selectedTaskType = TaskTypeOptions[0];
        _selectedTaskCategory = TaskCategoryOptions[0];
    }

    public Avalonia.Controls.Control CreateView() => new Views.Task.CreateTaskView();

    [RelayCommand]
    private async System.Threading.Tasks.Task CreateAsync()
    {
        if (string.IsNullOrWhiteSpace(PalletBarcode) || string.IsNullOrWhiteSpace(MaterialCode))
        {
            StatusText = "托盘条码和物料编码不能为空";
            return;
        }

        IsBusy = true;
        StatusText = "正在生成任务...";

        try
        {
            var taskQueue = await System.Threading.Tasks.Task.Run(() =>
                _taskCreateService.CreateTask(
                    StartBuilding, StartFloor, StartLocation,
                    EndBuilding, EndFloor, EndLocation,
                    TaskType, TaskCategory,
                    PalletBarcode, MaterialCode,
                    ManualPutIn, ManualTakeOut));

            StatusText = $"路由生成完成，共 {taskQueue.taskSteps} 条明细，正在保存...";

            var saved = await System.Threading.Tasks.Task.Run(() => _taskQueueService.InsertTaskQueue(taskQueue));

            StatusText = saved
                ? $"✓ 任务创建成功: {taskQueue.taskCode}，共 {taskQueue.taskSteps} 条明细"
                : "✗ 保存失败";
        }
        catch (Exception ex)
        {
            StatusText = $"✗ 创建失败: {ex.Message}";
        }
        finally
        {
            IsBusy = false;
        }
    }
}

public class TaskAttributeOption
{
    public int Value { get; set; }
    public string Display { get; set; } = string.Empty;
}