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								using GestionIntegral.Api.Dtos.Reportes.ViewModels;
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								using QuestPDF.Fluent;
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								using QuestPDF.Helpers;
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								using QuestPDF.Infrastructure;
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								using System.Linq;
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								namespace GestionIntegral.Api.Controllers.Reportes.PdfTemplates
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								{
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								    // Usamos una clase parcial para organizar mejor el código, aunque no es estrictamente necesario aquí.
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								    public class ExistenciaPapelDocument : IDocument
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								    {
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								        // Usamos una propiedad pública con 'init' en lugar de un campo privado.
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								        // Esto es más limpio y funciona mejor con el análisis de código.
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								        public ExistenciaPapelViewModel Model { get; }
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								        public ExistenciaPapelDocument(ExistenciaPapelViewModel model)
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								        {
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								            Model = model;
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								        }
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								        public DocumentMetadata GetMetadata() => DocumentMetadata.Default;
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								        public DocumentSettings GetSettings() => DocumentSettings.Default;
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								        public void Compose(IDocumentContainer container)
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								        {
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								            container
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								                .Page(page =>
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								                {
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								                    page.Margin(1, Unit.Centimetre);
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								                    page.PageColor(Colors.White);
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								                    page.DefaultTextStyle(x => x.FontFamily("Roboto").FontSize(10));
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								                    page.Header().Element(ComposeHeader);
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								                    page.Content().Element(ComposeContent);
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								                    page.Footer()
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								                        .AlignCenter()
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								                        .Text(x =>
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								                        {
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								                            x.Span("Página ");
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								                            x.CurrentPageNumber();
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								                        });
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								                });
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								        }
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								        // Ahora los métodos usan 'Model' (la propiedad pública) en lugar de '_model'.
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								        void ComposeHeader(IContainer container)
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								        {
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								            container.Column(column =>
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								            {
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								                column.Spacing(5);
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								                column.Item().AlignCenter().Text("Reporte de Existencias de Papel").SemiBold().FontSize(14);
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								                column.Item().AlignCenter().Text($"Planta: {Model.NombrePlanta}").FontSize(12);
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								                column.Item().PaddingTop(2, Unit.Millimetre).Row(row =>
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								                {
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								                    row.RelativeItem().Column(col =>
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								                    {
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								                        col.Item().Text(text =>
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								                        {
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								                            text.Span("Fecha del Reporte: ").SemiBold();
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								                            text.Span(Model.FechaReporte);
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								                        });
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								                         col.Item().Text($"Periodo Consultado: Desde {Model.FechaDesde} Hasta {Model.FechaHasta}");
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								                    });
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								                });
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								            });
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								        }
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								        void ComposeContent(IContainer container)
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								        {
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								            container.PaddingTop(1, Unit.Centimetre).Table(table =>
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								            {
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								                table.ColumnsDefinition(columns =>
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								                {
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								                    columns.RelativeColumn(); 
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								                    columns.ConstantColumn(65);
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								                    columns.ConstantColumn(70);
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								                    columns.ConstantColumn(85); 
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								                    columns.ConstantColumn(65); 
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								                    columns.ConstantColumn(80); 
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								                });
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								                table.Header(header =>
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								                {
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								                    header.Cell().Background(Colors.Grey.Lighten3).Padding(4).Text("Tipo de Bobina");
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								                    header.Cell().Background(Colors.Grey.Lighten3).Padding(4).AlignRight().Text("Cant. Stock");
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								                    header.Cell().Background(Colors.Grey.Lighten3).Padding(4).AlignRight().Text("Kg. Stock");
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								                    header.Cell().Background(Colors.Grey.Lighten3).Padding(4).AlignRight().Text("Consumo (Kg)");
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								                    header.Cell().Background(Colors.Grey.Lighten3).Padding(4).AlignRight().Text("Días Disp.");
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								                    header.Cell().Background(Colors.Grey.Lighten3).Padding(4).AlignCenter().Text("Fin Estimado");
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								                });
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								                foreach (var item in Model.Existencias)
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								                {
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								                    table.Cell().BorderBottom(1).BorderColor(Colors.Grey.Lighten2).Padding(4).Text(item.TipoBobina);
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								                    table.Cell().BorderBottom(1).BorderColor(Colors.Grey.Lighten2).Padding(4).AlignRight().Text(item.BobinasEnStock?.ToString("N0") ?? "0");
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								                    table.Cell().BorderBottom(1).BorderColor(Colors.Grey.Lighten2).Padding(4).AlignRight().Text(item.TotalKilosEnStock?.ToString("N0") ?? "0");
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								                    table.Cell().BorderBottom(1).BorderColor(Colors.Grey.Lighten2).Padding(4).AlignRight().Text(item.ConsumoAcumulado?.ToString("N0") ?? "0");
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								                    table.Cell().BorderBottom(1).BorderColor(Colors.Grey.Lighten2).Padding(4).AlignRight().Text(item.PromedioDiasDisponibles?.ToString("N0") ?? "N/A");
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								                    table.Cell().BorderBottom(1).BorderColor(Colors.Grey.Lighten2).Padding(4).AlignCenter().Text(item.FechaEstimacionFinStock?.ToString("dd/MM/yyyy") ?? "N/A");
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								                }
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								                var totalBobinas = Model.Existencias.Sum(e => e.BobinasEnStock ?? 0);
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								                var totalKilos = Model.Existencias.Sum(e => e.TotalKilosEnStock ?? 0);
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								                var totalConsumo = Model.Existencias.Sum(e => e.ConsumoAcumulado ?? 0);
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								                table.Cell().BorderTop(1).BorderColor(Colors.Grey.Lighten2).Padding(4).AlignRight().Text(t => t.Span("Totales").SemiBold());
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								                table.Cell().BorderTop(1).BorderColor(Colors.Grey.Lighten2).Padding(4).AlignRight().Text(t => t.Span(totalBobinas.ToString("N0")).SemiBold());
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								                table.Cell().BorderTop(1).BorderColor(Colors.Grey.Lighten2).Padding(4).AlignRight().Text(t => t.Span(totalKilos.ToString("N0")).SemiBold());
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								                table.Cell().BorderTop(1).BorderColor(Colors.Grey.Lighten2).Padding(4).AlignRight().Text(t => t.Span(totalConsumo.ToString("N0")).SemiBold());
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								                table.Cell().ColumnSpan(2).BorderTop(1).BorderColor(Colors.Grey.Lighten2);
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								            });
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								        }
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								    }
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								}
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