@page "/stock/productform"
@page "/stock/productform/{ProductId:int}"

@using Domain.Entities
@using phronCare.UIBlazor.Services.Lookups
@using phronCare.UIBlazor.Services.Stock
@using phronCare.UIBlazor.Shared.Modals
@using System.ComponentModel.DataAnnotations
@using Blazored.Typeahead

@inject NavigationManager Navigation
@inject LSProductService productService
@inject IStockLookUpService lookUpService
@inject IToastService toastService
@inject IModalService modalService

<div class="card" style="zoom:90%">
    <div class="card-header text-center">
        <h3 class="card-title">@(ProductId.HasValue ? "Editar producto" : "Nuevo producto")</h3>
    </div>
    <div class="card-body">
        <EditForm Model="product" OnValidSubmit="HandleValidSubmit">
            <DataAnnotationsValidator />
            <ValidationSummary />

            <div class="row">
                <div class="col-md-4">
                    <label>Código Fábrica *</label>
                    <InputText class="form-control" @bind-Value="product.FactoryCode" />
                </div>
                <div class="col-md-4">
                    <label>Código Externo</label>
                    <InputText class="form-control" @bind-Value="product.ExternalCode" />
                </div>
                <div class="col-md-4">
                    <label>Código Regulatorio</label>
                    <InputText class="form-control" @bind-Value="product.RegulatoryCode" />
                </div>
            </div>

            <div class="row mt-2">
                <div class="col-md-6">
                    <label>Nombre *</label>
                    <InputText class="form-control" @bind-Value="product.Name" />
                </div>
                <div class="col-md-6">
                    <label>Descripción *</label>
                    <InputText class="form-control" @bind-Value="product.Descripcion" />
                </div>
            </div>

            <div class="row mt-2">
                <div class="col-md-6">
                    <label>Tipo de Producto *</label>
                    <InputSelect class="form-control" @bind-Value="product.ProductType">
                        <option value="">-- Seleccionar --</option>
                        <option value="1">Implantable</option>
                        <option value="2">Instrumental</option>
                        <option value="3">Inyectable</option>
                    </InputSelect>
                </div>
                <div class="col-md-6">
                    <label>Trazabilidad *</label>
                    <InputSelect class="form-control" @bind-Value="product.TraceabilityType">
                        <option value="">-- Seleccionar --</option>
                        <option value="1">No aplica</option>
                        <option value="2">Por cantidad</option>
                        <option value="3">Por lote y vencimiento</option>
                    </InputSelect>
                </div>
            </div>

            <div class="row mt-2">
                <div class="col-md-6">
                    <label>División *</label>
                    <BlazoredTypeahead
                        TItem="ELookUpItem" TValue="ELookUpItem"
                                SearchMethod="@(filter => lookUpService.GetProductDivisionsAsync(filter).ContinueWith(t => t.Result.AsEnumerable()))"
                                Value="_selectedDivision" ValueChanged="OnDivisionSelected"
                                ValueExpression="@(() => _selectedDivision)"
                                Placeholder="Buscar división..." TextProperty="Nombre"
                                MaximumSuggestions="5" class="form-control form-control-sm" style="height: 38px;">
                        <ResultTemplate Context="item">@item.Nombre</ResultTemplate>
                        <SelectedTemplate Context="item">@item.Nombre</SelectedTemplate>
                    </BlazoredTypeahead>

                </div>
                <div class="col-md-6">
                    <label>Unidad de Medida *</label>
                    <BlazoredTypeahead id="unit" TItem="ELookUpItem" TValue="ELookUpItem"
                                SearchMethod="@(filter => lookUpService.GetUnitsOfMeasureAsync(filter).ContinueWith(t => t.Result.AsEnumerable()))"
                                Value="_selectedUnit" ValueChanged="OnUnitSelected"
                                ValueExpression="@(() => _selectedUnit)"
                                Placeholder="Buscar unidad..." TextProperty="Nombre" MaximumSuggestions="5"
                                class="form-control form-control-sm" style="height: 38px;">
                        <ResultTemplate Context="item">@item.Nombre</ResultTemplate>
                        <SelectedTemplate Context="item">@item.Nombre</SelectedTemplate>
                    </BlazoredTypeahead>
                </div>
            </div>

            <div class="row mt-3">
                <div class="col-md-6 d-flex align-items-center">
                    <div class="form-check form-switch">
                        <InputCheckbox id="PlusProcess" class="form-check-input" @bind-Value="product.PlusProcess" />
                        <label class="form-check-label ms-2">Requiere proceso adicional</label>
                    </div>
                </div>
            </div>
        </EditForm>
    </div>

    <div class="card-footer d-flex justify-content-end">
        <button class="btn btn-primary me-2" @onclick="HandleValidSubmit" disabled="@isSaving">
            @(isSaving ? "Guardando..." : "Guardar")
        </button>
        <button type="button" class="btn btn-secondary" @onclick="Cancel">Cancelar</button>
    </div>
</div>

@code {
    [Parameter] public int? ProductId { get; set; }

    private ELSProduct product = new();
    private bool isSaving = false;
    private ELookUpItem? _selectedDivision;
    private ELookUpItem? _selectedUnit;

    private ELSProductDivision? selectedDivision;
    private ELSUnitOfMeasure? selectedUnit;
    private string returnUrl = "/stock/products";

    protected override async Task OnInitializedAsync()
    {
        if (ProductId.HasValue)
        {
            product = await productService.GetByIdAsync(ProductId.Value) ?? new();

            // Precargar División
            var divisionList = await lookUpService.GetProductDivisionsAsync("");
            _selectedDivision = divisionList.FirstOrDefault(d => d.Id == product.DivisionId);

            // Precargar Unidad
            var unitList = await lookUpService.GetUnitsOfMeasureAsync("");
            _selectedUnit = unitList.FirstOrDefault(u => u.Id == product.UnitId);
        }
        else
        {
            product = new();
        }
    }
    private void OnDivisionSelected(ELookUpItem? selected)
    {
        _selectedDivision = selected;
        if (selected != null)
            product.DivisionId = selected.Id;
    }
    private void OnUnitSelected(ELookUpItem? selected)
    {
        _selectedUnit = selected;
        if (selected != null)
            product.UnitId = selected.Id;
    }

    private async Task HandleValidSubmit()
    {
        if (string.IsNullOrWhiteSpace(product.FactoryCode) ||
            string.IsNullOrWhiteSpace(product.Name) ||
            string.IsNullOrWhiteSpace(product.Descripcion) ||
            product.ProductType <= 0 ||
            product.TraceabilityType <= 0 ||
            _selectedDivision is null ||
            _selectedUnit is null)
        {
            toastService.ShowWarning("Por favor complete todos los campos obligatorios antes de guardar.");
            return;
        }
        var modal = modalService.Show<ConfirmModal>("Confirmación", new ModalParameters
        {
            { "Message", "¿Desea guardar este producto?" }
        });
        var result = await modal.Result;

        if (result.Cancelled) return;

        try
        {
            isSaving = true;
            product.DivisionId = _selectedDivision?.Id;
            product.UnitId = _selectedUnit?.Id ?? 0;

            HttpResponseMessage response;
            if (ProductId.HasValue)
                response = await productService.UpdateAsync(product);
            else
                response = await productService.CreateAsync(product);

            if (response.IsSuccessStatusCode)
            {
                toastService.ShowSuccess("Producto guardado correctamente.");
                Navigation.NavigateTo("/stock/products");
            }
            else
            {
                var error = await response.Content.ReadAsStringAsync();
                toastService.ShowError($"Error: {error}");
            }
        }
        catch (Exception ex)
        {
            toastService.ShowError($"Error: {ex.Message}");
        }
        finally
        {
            isSaving = false;
        }
    }

    private void Cancel() => Navigation.NavigateTo(returnUrl);
}