refactor: use data source, remove data loading in ctor of view models

Needlework.Net/Models/Document.cs

@@ -0,0 +1,73 @@
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.OpenApi.Models;
+
+namespace Needlework.Net.Models;
+
+public class Document
+{
+    internal OpenApiDocument OpenApiDocument { get; }
+
+    public SortedDictionary<string, List<PathOperation>> Plugins { get; }
+
+    public OpenApiInfo Info => OpenApiDocument.Info;
+
+    public List<string> Paths => [.. OpenApiDocument.Paths.Keys];
+
+    public Document(OpenApiDocument openApiDocument)
+    {
+        OpenApiDocument = openApiDocument;
+        var plugins = new SortedDictionary<string, List<PathOperation>>();
+
+        foreach ((var path, var pathItem) in openApiDocument.Paths)
+        {
+            foreach ((var method, var operation) in pathItem.Operations)
+            {
+                var operations = new List<PathOperation>();
+                var pluginsKey = "_unknown";
+
+                // Process and group endpoints into the following formats:
+                // "_unknown" - group that should not be possible
+                // "default" - no tags
+                // "builtin" - 'builtin' not associated with an endpoint
+                // "lol-summoner" etc. - 'plugin' associated with an endpoint
+                // "performance", "tracing", etc.
+                if (operation.Tags.Count == 0)
+                {
+                    pluginsKey = "default";
+                    if (plugins.TryGetValue(pluginsKey, out var p))
+                        p.Add(new(method.ToString(), path, pluginsKey, operation));
+                    else
+                    {
+                        operations.Add(new(method.ToString(), path, pluginsKey, operation));
+                        plugins[pluginsKey] = operations;
+                    }
+                }
+                else
+                {
+                    foreach (var tag in operation.Tags)
+                    {
+                        if (tag.Name == "plugins")
+                            continue;
+                        else
+                            pluginsKey = tag.Name;
+
+                        if (plugins.TryGetValue(pluginsKey, out var p))
+                            p.Add(new(method.ToString(), path, tag.Name, operation));
+                        else
+                        {
+                            operations.Add(new(method.ToString(), path, tag.Name, operation));
+                            plugins[pluginsKey] = operations;
+                        }
+                    }
+                }
+            }
+        }
+
+        plugins = new(plugins.ToDictionary(
+            kvp => kvp.Key,
+            kvp => kvp.Value.OrderBy(x => x.Path).ToList()));
+
+        Plugins = plugins;
+    }
+}