#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 = PictorialArtworkRecipe.Create("bottom", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(900, 195)), theme, mode,
    new VisualFrame("Completed assessments by team", "Captured self-contained artwork and explicit fractional clipping retain the complete source counts", 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>Captures self-contained artwork and retains fractional counts through the shared pictorial clip owner.</summary>
public static class PictorialArtworkRecipe {
    /// <summary>Creates ordinary native SVG, PNG and HTML output without files or network resources.</summary>
    public static Chart Create(string variant = "wide", VisualThemeMode mode = VisualThemeMode.Light) {
        if (variant is not ("wide" or "compact" or "right" or "bottom" or "top" or "image" or "contour"))
            throw new ArgumentOutOfRangeException(nameof(variant));
        var series = new ChartSeries(new ChartSeriesId("assessments"), "Completed assessments", ChartSeriesKind.Pictorial,
            new[] { new ChartPoint(1, 2.5), new ChartPoint(2, 1.25), new ChartPoint(3, .75) })
            .WithObservationId(0, new ChartObservationId("team-a")).WithObservationId(1, new ChartObservationId("team-b"))
            .WithObservationId(2, new ChartObservationId("team-c"));
        var chart = Chart.Create().WithSize(variant == "compact" ? 390 : 900, 460).WithTheme(VisualTheme.Graphite(), mode)
            .WithTitle("Completed assessments by team").WithLegend(false).WithAxes(false).WithGrid(false)
            .WithXLabels("Team A", "Team B", "Team C").WithPictorialColumns(4).WithPictorialValuePerSymbol(1)
            .WithPictorialSvgPath("M1 1H23V23H1Z M8 8V16H16V8Z").WithPictorialEmptyOpacity(.16)
            .WithValueFormat(ChartValueFormat.Number("0.##' units'", CultureInfo.InvariantCulture)).AddSeries(series);
        if (variant != "contour") {
            chart.WithPictorialArtwork(variant == "image" ? ChartPictorialArtwork.FromImage(Image()) : ChartPictorialArtwork.FromSvg(
                "<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 16'><rect x='1' y='1' width='22' height='14' rx='3' fill='#347B59'/><path d='M5 8L10 12L19 4' fill='none' stroke='#FFFFFF' stroke-width='2'/></svg>", 96, 64));
        }
        return chart.WithPictorialFillDirection(variant switch {
            "right" => ChartPictorialFillDirection.RightToLeft,
            "bottom" or "contour" => ChartPictorialFillDirection.BottomToTop,
            "top" => ChartPictorialFillDirection.TopToBottom,
            _ => ChartPictorialFillDirection.LeftToRight
        });
    }

    private static ChartForgeX.Raster.RgbaImage Image() {
        var pixels = new byte[12 * 8 * 4];
        for (var y = 0; y < 8; y++) for (var x = 0; x < 12; x++) {
            var offset = (y * 12 + x) * 4;
            pixels[offset] = x < 6 ? (byte)36 : (byte)201;
            pixels[offset + 1] = y < 4 ? (byte)105 : (byte)164;
            pixels[offset + 2] = 153; pixels[offset + 3] = 255;
        }
        return new ChartForgeX.Raster.RgbaImage(12, 8, pixels);
    }
}