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 = GaugeRecipe.Create("compact-semicircle", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(360, 360)), theme, mode,
    new VisualFrame("Available capacity against a target", "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>A measured value, target and qualitative bands on an arc, needle or precision scale.</summary>
public static class GaugeRecipe {
    /// <summary>Creates capacity against its target, or a close-bound linear tolerance measurement.</summary>
    public static Chart Create(string variant = "wide", VisualThemeMode mode = VisualThemeMode.Light) {
        if (variant is "precision" or "compact-precision") {
            var tolerance = ChartSeries.CreateGauge(new ChartSeriesId("tolerance"), "Tolerance",
                new ChartGaugeValue(1.003, 1.001, 1.005, new[] { new ChartGaugeTarget(1.0025) }));
            return Chart.Create().AddSeries(tolerance).ConfigureGauge(options => {
                options.Form = ChartGaugeForm.Linear;
            });
        }
        if (variant is not ("wide" or "compact" or "sparse" or "options" or "compact-options" or "vertical" or "compact-vertical" or "semicircle" or "compact-semicircle" or "full-circle" or "compact-full-circle"))
            throw new ArgumentOutOfRangeException(nameof(variant));
        var configured = variant is "vertical" or "compact-vertical" or "semicircle" or "compact-semicircle" or "full-circle" or "compact-full-circle";
        var capacity = ChartSeries.CreateGauge(new ChartSeriesId("capacity"), "Capacity",
            new ChartGaugeValue(76, targets: configured ? new[] { new ChartGaugeTarget(60, "Baseline"), new ChartGaugeTarget(85, "Goal") } : new[] { new ChartGaugeTarget(85) }));
        return Chart.Create().AddSeries(capacity)
            .WithValueFormat(ChartValueFormat.Number("0.##", System.Globalization.CultureInfo.InvariantCulture))
            .ConfigureGauge(options => {
                options.Form = variant is "options" or "compact-options" ? ChartGaugeForm.Needle : ChartGaugeForm.Arc;
                if (configured) options.TickCount = 5;
                if (variant is "vertical" or "compact-vertical") { options.Form = ChartGaugeForm.Linear; options.Orientation = ChartOrientation.Vertical; }
                if (variant is "semicircle" or "compact-semicircle") { options.StartAngleDegrees = 180; options.SweepAngleDegrees = 180; }
                if (variant is "full-circle" or "compact-full-circle") { options.StartAngleDegrees = -90; options.SweepAngleDegrees = 360; }
                options.Caption = "Available capacity";
                options.Bands.Add(new ChartGaugeBand(0, 50, ChartSeriesState.Danger));
                options.Bands.Add(new ChartGaugeBand(50, 80, ChartSeriesState.Warning));
                options.Bands.Add(new ChartGaugeBand(80, 100, ChartSeriesState.Success));
            });
    }
}