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.Light;
var theme = VisualTheme.Graphite();
var model = ScatterQuadrantsRecipe.Create("quadrants", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(800, 440)), theme, mode,
    new VisualFrame("Effort and impact", "Four background regions share an authored effort and impact pivot", 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());

/// <summary>Places proposed work into effort and impact regions.</summary>
public static class ScatterQuadrantsRecipe {
    /// <summary>Creates the selected example without choosing a renderer or export backend.</summary>
    public static Chart Create(string variant = "quadrants", VisualThemeMode mode = VisualThemeMode.Light) {
        if (variant is not ("quadrants" or "compact-quadrants")) throw new ArgumentOutOfRangeException(nameof(variant));
        return Quadrants().WithValueFormat(ChartValueFormat.Number("0.##", CultureInfo.InvariantCulture));
    }

    private static Chart Quadrants() {
        var proposed = ChartSeries.CreateScatter(new ChartSeriesId("proposed-work"), "Proposed work", new[] {
            new ChartPoint(1.4, 8.1), new ChartPoint(3.1, 7.3), new ChartPoint(7.2, 8.8),
            new ChartPoint(8.4, 6.8), new ChartPoint(2.5, 2.1), new ChartPoint(6.5, 3.2)
        });
        return Chart.Create().WithXAxisBounds(0, 10).WithYAxisBounds(0, 10).WithDataLabels(false)
            .WithXAxis("Effort (days)").WithYAxis("Impact (score)").AddSeries(proposed)
            .AddPlotRegion(new(ChartColor.FromHex("#328c68"), xMaximum: 4, yMinimum: 6, label: "Prioritize", opacity: .18))
            .AddPlotRegion(new(ChartColor.FromHex("#5487b8"), xMinimum: 4, yMinimum: 6, label: "Plan", opacity: .15))
            .AddPlotRegion(new(ChartColor.FromHex("#ac9148"), xMaximum: 4, yMaximum: 6, label: "Consider", opacity: .13))
            .AddPlotRegion(new(ChartColor.FromHex("#ba6d67"), xMinimum: 4, yMaximum: 6, label: "Reassess", opacity: .13));
    }
}