using System;
using System.Linq;
using NUnit.Framework;
using QuestPDF.Examples.Engine;
using QuestPDF.Fluent;
using QuestPDF.Helpers;
using QuestPDF.Infrastructure;

namespace QuestPDF.Examples
{
    public class PageBackgroundForegroundExample
    {
        [Test]
        public void PageBackgroundForeground()
        {
            RenderingTest
                .Create()
                .ProduceImages()
                .MaxPages(100)
                .ShowResults()
                .RenderDocument(document =>
                {
                    document.Page(page =>
                    {
                        page.Size(PageSizes.A4);
                        page.Margin(1, Unit.Inch);
                        page.DefaultTextStyle(TextStyle.Default.FontSize(16));
                        page.PageColor(Colors.White);

                        var transparentBlue = Colors.LightBlue.Medium.WithAlpha(64);

                        page.Background()
                            .AlignTop()
                            .ExtendHorizontal()
                            .Height(200)
                            .Background(transparentBlue);
                        
                        page.Foreground()
                            .AlignBottom()
                            .ExtendHorizontal()
                            .Height(250)
                            .Background(transparentBlue);
                        
                        page.Header().Text("Background and foreground").Bold().FontColor(Colors.Blue.Darken2).FontSize(36);
                        
                        page.Content().PaddingVertical(25).Column(column =>
                        {
                            column.Spacing(25);

                            foreach (var i in Enumerable.Range(0, 100))
                                column.Item().Background(Colors.Grey.Lighten2).Height(75);
                        });
                    });
                });
        }

        [Test]
        public void CustomContentOnPageSides()
        {
            RenderingTest
                .Create()
                .ProduceImages()
                .MaxPages(100)
                .ShowResults()
                .RenderDocument(document =>
                {
                    document.Page(page =>
                    {
                        const float horizontalMargin = 1.5f;
                        const float verticalMargin = 1f;
                        
                        page.Size(PageSizes.A4);
                        page.MarginVertical(verticalMargin, Unit.Inch);
                        page.MarginHorizontal(horizontalMargin, Unit.Inch);
                        page.PageColor(Colors.White);

                        page.Background()
                            .PaddingVertical(verticalMargin, Unit.Inch)
                            .RotateRight()
                            .Decoration(decoration =>
                            {
                                decoration.Before().RotateRight().RotateRight().Element(DrawSide);
                                decoration.Content().Extend();
                                decoration.After().Element(DrawSide);

                                void DrawSide(IContainer container)
                                {
                                    container
                                        .Height(horizontalMargin, Unit.Inch)
                                        .AlignMiddle()
                                        .Row(row =>
                                        {   
                                            row.AutoItem().PaddingRight(16).Text("COMPANY NAME").FontSize(16).FontColor(Colors.Red.Medium);
                                            row.RelativeItem().PaddingTop(12).ExtendHorizontal().LineHorizontal(2).LineColor(Colors.Red.Medium);
                                        });
                                }
                            });
                        
                        page.Content().Column(column =>
                        {
                            column.Spacing(25);

                            foreach (var i in Enumerable.Range(1, 100))
                                column.Item().Background(Colors.Grey.Lighten2).Height(75).AlignCenter().AlignMiddle().Text(i.ToString()).FontSize(16);
                        });
                    });
                });
        }
    }
}