#region Setup
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using ChartForgeX.Core;
using ChartForgeX.Primitives;
using ChartForgeX.Rendering;
using ChartForgeX.Themes;
using ChartForgeX.Topology;
using ChartForgeX.Typography;
using ChartForgeX.VisualArtifacts;
using ChartForgeX.VisualBlocks;

var mode = VisualThemeMode.Dark;
var theme = VisualTheme.Graphite();
var model = BoxPlotRecipe.Create("horizontal-statistic-labels", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(800, 440)), theme, mode,
    new VisualFrame("Delivery time by service level", "", showLegend: null, showSurface: false));
var prepared = model.Prepare(context);
File.WriteAllText("visual.svg", prepared.ToSvg());
File.WriteAllBytes("visual.png", prepared.ToPng());
File.WriteAllText("visual.html", prepared.ToArtifact("example", VisualArtifactKind.Chart).ToHtmlPage());
#endregion

/// <summary>Builds delivery-time distributions from typed five-number summaries.</summary>
public static class BoxPlotRecipe {
    /// <summary>Creates the selected box-plot example and its orientation.</summary>
    public static Chart Create(string variant = "wide", VisualThemeMode mode = VisualThemeMode.Light) {
        if (variant is not ("wide" or "compact" or "sparse" or "options" or "compact-options" or "horizontal" or "compact-horizontal"
            or "statistic-labels" or "compact-statistic-labels" or "horizontal-statistic-labels" or "compact-horizontal-statistic-labels"))
            throw new ArgumentOutOfRangeException(nameof(variant));
        var chart = Chart.Create();
        if (variant.Contains("statistic-labels")) chart = StatisticLabels(variant, mode);
        else if (variant is "options" or "compact-options" or "horizontal" or "compact-horizontal") {
            var horizontal = variant is "horizontal" or "compact-horizontal";
            var expected = ChartSeries.CreateBoxPlot(new ChartSeriesId("expected"), "Expected", new[] {
                new ChartBoxPlot(1, 10, 20, 25, 30, 40), new ChartBoxPlot(2, 5, 10, 15, 25, 35),
                new ChartBoxPlot(3, 12, 20, 28, 35, 45), new ChartBoxPlot(4, 20, 30, 35, 45, 55)
            });
            var observed = ChartSeries.CreateBoxPlot(new ChartSeriesId("observed"), "Observed", new[] {
                new ChartBoxPlot(1, 12, 22, 30, 38, 48), new ChartBoxPlot(2, 8, 12, 22, 30, 42),
                new ChartBoxPlot(3, 15, 24, 32, 40, 50), new ChartBoxPlot(4, 22, 35, 40, 48, 58)
            }).WithPointFillPattern(2, ChartFillPattern.DiagonalForward);
            chart.WithXLabels("Standard", "Express", "Premium", "Bulk").AddSeries(expected).AddSeries(observed)
                .ConfigureBoxPlot(options => options.Orientation = horizontal ? ChartOrientation.Horizontal : ChartOrientation.Vertical)
                .WithDataLabels();
            if (horizontal) chart.WithXAxis("Delivery time (minutes)").WithYAxis("Service");
            else chart.WithYAxis("Delivery time (minutes)");
        }
        else {
            var count = variant == "sparse" ? 2 : 5;
            var distributions = Enumerable.Range(1, count)
                .Select(index => new ChartBoxPlot(index, 10 + index, 20 + index, 30 + index, 38 + index, 50 + index));
            var delivery = ChartSeries.CreateBoxPlot(new ChartSeriesId("delivery-time"), "Delivery time", distributions);
            chart.WithXLabels("Standard", "Express", "Premium", "Bulk", "Return").AddSeries(delivery);
        }
        return chart;
    }

    private static Chart StatisticLabels(string variant, VisualThemeMode mode) {
        var horizontal = variant.Contains("horizontal");
        var chart = Chart.Create().WithTitle("Five-number delivery summaries").WithXLabels("Standard", "Express")
            .AddSeries(ChartSeries.CreateBoxPlot(new ChartSeriesId("delivery"), "Delivery time", new[] {
                new ChartBoxPlot(1, 10, 20, 30, 40, 50), new ChartBoxPlot(2, 5, 15, 25, 35, 45)
            }).WithPointLabel(0, "Standard delivery summary"))
            .ConfigureBoxPlot(options => {
                options.Orientation = horizontal ? ChartOrientation.Horizontal : ChartOrientation.Vertical;
                options.LabelContent = ChartBoxPlotLabelContent.Statistics;
                foreach (var label in new[] { options.MinimumLabel, options.Q1Label, options.MedianLabel, options.Q3Label, options.MaximumLabel }) {
                    label.Placement = horizontal ? ChartDataLabelPlacement.Above : ChartDataLabelPlacement.Right;
                    label.Style.WithFontSize(10);
                }
                options.MinimumLabel.Style.WithColor(mode == VisualThemeMode.Dark ? "#82b8ff" : "#235b9f");
                options.MaximumLabel.Style.WithColor(mode == VisualThemeMode.Dark ? "#ffbe79" : "#975000");
                options.MedianLabel.Style.WithFontSize(12).WithWeight("700");
            }).WithDataLabels();
        (horizontal ? chart.Options.XAxis : chart.Options.YAxis).WithBounds(0, 60);
        return horizontal ? chart.WithXAxis("Delivery time (minutes)").WithYAxis("Service") : chart.WithYAxis("Delivery time (minutes)");
    }
}