@page "/deliverynotes"
@using Domain.Dtos
@using Domain.Dtos.Sales
@using Domain.Generics
@using phronCare.UIBlazor.Services.Sales.DeliveryNotes
@inject NavigationManager Navigation
@inject IDeliveryNoteService deliveryNoteService
@inject IToastService toastService

<div class="card shadow-sm mb-3" style="zoom: 0.8;">
    <div class="card-header py-2">
        <div class="d-flex justify-content-center align-items-center">
            <h3 class="card-title m-0">Consulta de Remitos</h3>
        </div>
    </div>
    <div class="card-body pt-2 pb-0">
        <div class="mb-3 row g-2 align-items-end">
            <div class="col-sm">
                <label for="deliveryNoteNumber">Remito</label>
                <input id="deliveryNoteNumber" @bind="Filters.DeliveryNoteNumber" class="form-control form-control-sm" placeholder="DN-0000000X" />
            </div>
            <div class="col-sm">
                <label for="customer">Cliente</label>
                <input id="customer" @bind="Filters.CustomerText" class="form-control form-control-sm" placeholder="Nombre o código" />
            </div>
            <div class="col-sm">
                <label for="quoteNumber">Presupuesto</label>
                <input id="quoteNumber" @bind="Filters.QuoteNumber" class="form-control form-control-sm" placeholder="Q-0000000X" />
            </div>
            <div class="col-sm">
                <label for="status">Estado</label>
                <select id="status" @bind="Filters.Status" class="form-select form-select-sm">
                    <option value="">— Todos —</option>
                    <option value="Emitido">Emitido</option>
                    <option value="Anulado">Anulado</option>
                    <option value="Cerrado">Cerrado</option>
                </select>
            </div>
            <div class="col-sm">
                <label for="datefrom">Desde</label>
                <InputDate id="datefrom" @bind-Value="Filters.IssueDateFrom" class="form-control form-control-sm" />
            </div>
            <div class="col-sm">
                <label for="dateto">Hasta</label>
                <InputDate id="dateto" @bind-Value="Filters.IssueDateTo" class="form-control form-control-sm" />
            </div>
            <div class="d-flex justify-content-end gap-2 mt-3">
                <button class="btn btn-primary rounded-pill" @onclick="Search">
                    <i class="fas fa-binoculars me-1"></i> Buscar
                </button>
                <button class="btn btn-secondary rounded-pill ms-1" @onclick="OnClear">
                    <i class="fas fa-eraser me-1"></i> Limpiar
                </button>
                <button class="btn btn-success rounded-pill" @onclick="Create">
                    <i class="fas fa-plus me-1"></i> Nuevo
                </button>
                <button class="btn btn-success rounded-pill" @onclick="ExportarExcel">
                    <i class="fas fa-file-excel me-1"></i> Excel
                </button>
            </div>
        </div>
    </div>
</div>
<div class="card shadow-sm" style="zoom:0.8;">
    <div class="table-responsive" style="zoom:0.8;">
        <table class="table table-sm align-middle mb-0">
            <thead class="table-light">
                <tr>
                    <th>Remito</th>
                    <th>Emisión</th>
                    <th>Presupuesto</th>
                    <th>Cliente</th>
                    <th>Estado</th>
                    <th>Observaciones</th>
                    <th>Reimpresiones</th>
                    <th style="width:80px;">Acciones</th>
                </tr>
            </thead>
            <tbody>
                @if (PagedDeliveryNotes?.Items?.Any() == true)
                {
                    @foreach (var deliveryNote in PagedDeliveryNotes.Items)
                    {
                        <tr class="text-center">
                            <td>@deliveryNote.DeliveryNoteNumber</td>
                            <td>@deliveryNote.IssueDate.ToString("dd/MM/yyyy")</td>
                            <td>@(string.IsNullOrWhiteSpace(deliveryNote.QuoteNumber) ? "—" : deliveryNote.QuoteNumber)</td>
                            <td>@deliveryNote.CustomerName</td>
                            <td>
                                <span class="badge @GetStatusBadge(deliveryNote.Status)">@deliveryNote.Status</span>
                            </td>
                            <td>@(string.IsNullOrWhiteSpace(deliveryNote.Observations) ? "—" : deliveryNote.Observations)</td>
                            <td>@deliveryNote.PrintCount</td>
                            <td class="text-center align-middle">
                                <button class="btn btn-link btn-lg p-0 text-primary ms-2" title="Ver detalle" @onclick="() => OpenDetailAsync(deliveryNote)"><i class="fas fa-eye"></i></button>
                                <button class="btn btn-link btn-lg p-0 text-danger ms-2" title="Imprimir PDF" @onclick="() => PrintPdfAsync(deliveryNote)"><i class="fas fa-print"></i></button>
                            </td>
                        </tr>
                    }
                }
                else if (IsLoading)
                {
                    <tr><td colspan="8" class="text-center text-muted py-4">Cargando...</td></tr>
                }
                else
                {
                    <tr><td colspan="8" class="text-center text-muted py-4">Sin resultados</td></tr>
                }
            </tbody>
        </table>
    </div>
    <div class="d-flex justify-content-center align-items-center px-3 py-2 border-top">
        <div class="btn-group justify-content-center">
            <button class="btn btn-outline-secondary btn-sm rounded-pill" @onclick="PrimeraPagina" disabled="@(Filters.Page == 1)">Primera</button>
            <button class="btn btn-outline-secondary btn-sm rounded-pill" @onclick="AnteriorPagina" disabled="@(!PuedeRetroceder)">Anterior</button>
            <span class="mx-2">
                Página <strong>@Filters.Page</strong> de <strong>@TotalPaginas</strong>
            </span>
            <button class="btn btn-outline-secondary btn-sm rounded-pill" @onclick="SiguientePagina" disabled="@(!PuedeAvanzar)">Siguiente</button>
            <button class="btn btn-outline-secondary btn-sm rounded-pill" @onclick="UltimaPagina" disabled="@(Filters.Page == TotalPaginas)">Última</button>
            <div class="d-flex align-items-center ms-3">
                <input type="number"
                       class="form-control form-control-sm rounded"
                       style="width: 80px;"
                       min="1"
                       max="@TotalPaginas"
                       @bind="PaginaDeseada" />
            </div>
            <button class="btn btn-outline-secondary btn-sm rounded-pill" @onclick="IrAPagina">
                <i class="fas fa-arrow-right-to-bracket me-1"></i> Ir
            </button>
        </div>
    </div>
</div>

<DeliveryNoteDetailDrawer Summary="@SelectedSummary"
                          Detail="@SelectedDeliveryNote"
                          Visible="@IsDrawerOpen"
                          VisibleChanged="OnDrawerVisibleChanged"
                          Loading="@IsDetailLoading" />

@code {
    private DeliveryNoteSearchParams Filters = new() { PageSize = 10 };
    private PagedResult<DeliveryNoteSummaryDto>? PagedDeliveryNotes;
    private DeliveryNoteSummaryDto? SelectedSummary;
    private DeliveryNoteDto? SelectedDeliveryNote;
    private bool IsDrawerOpen;
    private bool IsDetailLoading;
    private bool IsLoading;
    private int PaginaDeseada = 1;

    private async Task Search()
    {
        try
        {
            IsLoading = true;
            PagedDeliveryNotes = await deliveryNoteService.SearchAsync(Filters);
            PaginaDeseada = Filters.Page;
        }
        catch (Exception ex)
        {
            toastService.ShowError(ex.Message);
        }
        finally
        {
            IsLoading = false;
        }
    }

    private async Task PrimeraPagina() { Filters.Page = 1; await Search(); }
    private async Task UltimaPagina() { Filters.Page = TotalPaginas; await Search(); }
    private async Task SiguientePagina() => await CambiarPagina(1);
    private async Task AnteriorPagina() => await CambiarPagina(-1);

    private async Task CambiarPagina(int delta)
    {
        var nuevaPagina = Filters.Page + delta;
        if (nuevaPagina >= 1 && nuevaPagina <= TotalPaginas)
        {
            Filters.Page = nuevaPagina;
            await Search();
        }
    }

    private async Task IrAPagina()
    {
        if (PaginaDeseada >= 1 && PaginaDeseada <= TotalPaginas)
        {
            Filters.Page = PaginaDeseada;
            await Search();
        }
        else
        {
            toastService.ShowWarning("Número de página fuera de rango.");
        }
    }

    private bool PuedeRetroceder => PagedDeliveryNotes != null && Filters.Page > 1;
    private bool PuedeAvanzar => PagedDeliveryNotes != null && Filters.Page < TotalPaginas;
    private int TotalPaginas => PagedDeliveryNotes is null ? 1 :
        (int)Math.Ceiling((double)(PagedDeliveryNotes.TotalItems) / Filters.PageSize);

    private void Create()
    {
        Navigation.NavigateTo("/deliverynotes/create");
    }

    private void OnClear()
    {
        Filters = new DeliveryNoteSearchParams { PageSize = 10 };
        PagedDeliveryNotes = null;
        PaginaDeseada = 1;
    }

    private string GetStatusBadge(string status) => status switch
    {
        "Anulado" => "bg-danger text-white",
        "Emitido" => "bg-primary text-white",
        "Aprobado" => "bg-success",
        "Cerrado" => "bg-dark text-white",
        _ => "bg-light text-dark"
    };

    private async Task OpenDetailAsync(DeliveryNoteSummaryDto summary)
    {
        SelectedSummary = summary;
        SelectedDeliveryNote = null;
        IsDrawerOpen = true;
        IsDetailLoading = true;
        StateHasChanged();

        try
        {
            var detail = await deliveryNoteService.GetByIdAsync(summary.Id);
            if (detail is not null)
            {
                SelectedDeliveryNote = detail;
            }
            else
            {
                toastService.ShowError("No se pudo cargar el detalle del remito.");
            }
        }
        catch (Exception ex)
        {
            toastService.ShowError(ex.Message);
        }
        finally
        {
            IsDetailLoading = false;
        }
    }

    private Task OnDrawerVisibleChanged(bool visible)
    {
        IsDrawerOpen = visible;
        return Task.CompletedTask;
    }

    private async Task PrintPdfAsync(DeliveryNoteSummaryDto deliveryNote)
    {
        try
        {
            await deliveryNoteService.ExportPdfAsync(deliveryNote.Id, deliveryNote.DeliveryNoteNumber);
        }
        catch (Exception ex)
        {
            toastService.ShowError(ex.Message);
        }
    }

    private void ExportarExcel()
    {
        toastService.ShowInfo("La exportación a Excel se implementará en una próxima story.");
    }
}