#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 = GeographicDatasetsRecipe.Create("mercator", mode);
var context = new VisualRenderContext(
    new VisualLayoutOptions(new VisualSize(800, 600)), theme, mode,
    new VisualFrame("Coverage and delivery routes", "Independent coverage, delay and traffic dimensions", showLegend: true, 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>Combines geographic service zones, independently colored weighted depots and retained route facts.</summary>
public static class GeographicDatasetsRecipe {
    /// <summary>Creates a compact or wide geographic chart using an ordinary or Mercator source projection.</summary>
    public static Chart Create(string variant = "wide", VisualThemeMode mode = VisualThemeMode.Light) {
        if (variant is not ("wide" or "compact" or "mercator" or "compact-mercator")) throw new ArgumentOutOfRangeException(nameof(variant));
        var projection = variant.EndsWith("mercator", StringComparison.Ordinal)
            ? ChartMapGeoJsonProjection.WebMercator : ChartMapGeoJsonProjection.Equirectangular;
        var definition = ChartMapGeoJson.ToMapDefinition("service-zones", "Service zones", GeoJson,
            new ChartMapGeoJsonOptions { Projection = projection });
        var coverage = ChartSeries.CreateRegionMap(new ChartSeriesId("coverage"), "Service coverage", definition, new[] {
            new ChartRegionMapItem("west", 92), new ChartRegionMapItem("central", 74), new ChartRegionMapItem("north", 88)
        }).WithColorScale(ChartColorScale.Sequential(ChartColor.FromHex("#DBEAFE"), ChartColor.FromHex("#1D4ED8")).WithValueRange(0, 100));
        coverage.ConfigureColorDimension(options => {
            options.Name = "Coverage"; options.ValueFormat = ChartValueFormat.Number("0 '%'", CultureInfo.InvariantCulture);
        });
        var depots = ChartSeries.CreateDottedMap(new ChartSeriesId("depots"), "Depot delays", ChartMapGeoJson.ToMapPoints(GeoJson,
            new ChartMapGeoJsonOptions { WeightPropertyName = "traffic", ColorValuePropertyName = "delay" }))
            .WithObservationIds(new[] { new ChartObservationId("madrid"), new ChartObservationId("warsaw"), new ChartObservationId("oslo") })
            .WithColorScale(ChartColorScale.Diverging(ChartColor.FromHex("#0D9488"), ChartColor.FromHex("#E2E8F0"), ChartColor.FromHex("#EA580C"), 0).WithValueRange(-10, 30))
            .ReplaceMapConnectors(ChartMapGeoJson.ToMapConnectors(GeoJson));
        depots.ConfigureColorDimension(options => {
            options.Name = "Delay"; options.ValueFormat = ChartValueFormat.Number("0 'min'", CultureInfo.InvariantCulture);
        });
        depots.ConfigureMapPointSize(options => {
            options.WithSizeDomain(0, 100); options.MinimumRadius = 3; options.MaximumRadius = 10;
            options.SizeDimension.Name = "Traffic"; options.SizeDimension.ShowLegend = true;
            options.SizeDimension.ValueFormat = ChartValueFormat.Number("0 'routes'", CultureInfo.InvariantCulture);
        });
        return Chart.Create().WithSize(variant.StartsWith("compact", StringComparison.Ordinal) ? 390 : 800, 600)
            .WithTheme(VisualTheme.Graphite(), mode).WithTitle("Coverage and delivery routes")
            .WithSubtitle("Regions show coverage; depot color shows delay and size shows traffic")
            .WithLegend().WithMapLabels(false).WithDataLabels().AddSeries(coverage).AddSeries(depots);
    }

    // The rectangles are authored service zones rather than administrative borders. Every importer reads the same source facts.
    private const string GeoJson = """
        {"type":"FeatureCollection","features":[
          {"type":"Feature","properties":{"code":"west","name":"West zone"},"geometry":{"type":"Polygon","coordinates":[[[-10,35],[5,35],[5,48],[-10,48],[-10,35]]]}},
          {"type":"Feature","properties":{"code":"central","name":"Central zone"},"geometry":{"type":"Polygon","coordinates":[[[5,45],[25,45],[25,56],[5,56],[5,45]]]}},
          {"type":"Feature","properties":{"code":"north","name":"North zone"},"geometry":{"type":"Polygon","coordinates":[[[5,56],[25,56],[25,66],[5,66],[5,56]]]}},
          {"type":"Feature","properties":{"name":"Madrid","traffic":18,"delay":-5},"geometry":{"type":"Point","coordinates":[-3.7,40.4]}},
          {"type":"Feature","properties":{"name":"Warsaw","traffic":74,"delay":20},"geometry":{"type":"Point","coordinates":[21,52.2]}},
          {"type":"Feature","properties":{"name":"Oslo","traffic":42,"delay":7},"geometry":{"type":"Point","coordinates":[10.8,59.9]}},
          {"type":"Feature","properties":{"name":"Depot route"},"geometry":{"type":"LineString","coordinates":[[-3.7,40.4],[10,45],[21,52.2],[17,56],[10.8,59.9]]}}
        ]}
        """;
}