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 = SlopeRecipe.Create("compact", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(360, 360)), theme, mode,
    new VisualFrame("Capacity change across teams", "The same data in a compact view", 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>Builds a two-position capacity comparison for three teams.</summary>
public static class SlopeRecipe {
    /// <summary>Creates the selected slope example with explicit endpoint labels.</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"))
            throw new ArgumentOutOfRangeException(nameof(variant));
        var teamA = new ChartSeries(new ChartSeriesId("team-a"), "Team A", ChartSeriesKind.Slope, new[] { new ChartPoint(1, 28), new ChartPoint(2, 64) });
        var teamB = new ChartSeries(new ChartSeriesId("team-b"), "Team B", ChartSeriesKind.Slope, new[] { new ChartPoint(1, 52), new ChartPoint(2, 43) });
        var teamC = new ChartSeries(new ChartSeriesId("team-c"), "Team C", ChartSeriesKind.Slope, new[] { new ChartPoint(1, 38), new ChartPoint(2, 57) });
        return Chart.Create().WithXLabels("Before", "After").AddSeries(teamA).AddSeries(teamB).AddSeries(teamC)
            .WithValueFormat(ChartValueFormat.Number("0.##", CultureInfo.InvariantCulture));
    }
}