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;

// Optional exact gallery typography; copy the gallery's fonts directory beside this program.
FontRegistry.Register("CFX Proof Carlito", "fonts/Carlito-Regular.ttf", 400);
FontRegistry.Register("CFX Proof Carlito", "fonts/Carlito-Bold.ttf", 700);
var mode = VisualThemeMode.Light;
var theme = VisualTheme.Graphite();
var model = PolarAreaRecipe.Create("wide", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(800, 440)), theme, mode,
    new VisualFrame("Service revenue in radial segments", "Explore the data, then download the chart", showLegend: null, showSurface: false), FontSpec.FromFamily("CFX Proof Carlito"));
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());

/// <summary>Service revenue encoded by radial area, with an optional reversed category example.</summary>
public static class PolarAreaRecipe {
    /// <summary>Creates radial revenue segments; the reversal variant retains a zero-valued category and point paint.</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 "angular-reversal" or "compact-angular-reversal"))
            throw new ArgumentOutOfRangeException(nameof(variant));
        if (variant is "angular-reversal" or "compact-angular-reversal") {
            var reversedRevenue = new ChartSeries(new ChartSeriesId("revenue"), "Revenue", ChartSeriesKind.PolarArea,
                new[] { new ChartPoint(1, 92), new ChartPoint(2, 0), new ChartPoint(3, 58), new ChartPoint(4, 74) })
                .WithPointColor(0, ChartColor.FromHex("#2563EB")).WithPointFillPattern(2, ChartFillPattern.DiagonalForward);
            return Chart.Create().WithXLabels("North", "East", "South", "West").WithDataLabels().AddSeries(reversedRevenue)
                .ConfigureXAxis(axis => axis.WithReversal())
                .WithValueFormat(ChartValueFormat.Number("0.##", System.Globalization.CultureInfo.InvariantCulture));
        }
        var points = (variant == "sparse" ? new[] { 1, 3, 6 } : Enumerable.Range(1, 6))
            .Select(index => new ChartPoint(index, 20 + index * 7 % 29));
        var revenue = new ChartSeries(new ChartSeriesId("revenue"), "Revenue", ChartSeriesKind.PolarArea, points);
        return Chart.Create().WithXLabels("Subscriptions", "Consulting", "Support", "Licenses", "Training", "Other").AddSeries(revenue)
            .WithValueFormat(ChartValueFormat.Number("0.##", System.Globalization.CultureInfo.InvariantCulture));
    }
}