Программа просмотра базы данных

Pf2eViewer/EntityConventor.cs

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+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using Pf2eModel;
+using Pf2eModel.Model;
+using Pf2eModel.Model.Base;
+using Pf2eModel.Model.Structure;
+using Processor = System.Func<Newtonsoft.Json.JsonWriter, object, Newtonsoft.Json.JsonSerializer, Pf2eModel.Model.Pf2eDbContext, Newtonsoft.Json.Linq.JObject>;
+
+namespace Pf2eViewer;
+internal class EntityConventor : JsonConverter
+{
+    private Pf2eDbContext Context = new();
+
+    public override bool CanConvert(Type objectType)
+    {
+        return objectType == typeof(Entity) || objectType.IsAssignableTo(typeof(IEntity));
+    }
+
+    public override void WriteJson(JsonWriter writer, object? value, JsonSerializer serializer)
+    {
+        JToken token = JToken.FromObject(value!);
+
+        if (token.Type != JTokenType.Object)
+        {
+            token.WriteTo(writer);
+            return;
+        }
+
+        JObject obj = (JObject) token;
+
+        switch (value)
+        {
+            case Entity e:
+                obj = ProcessEntity(obj, e);
+                break;
+        }
+
+
+        obj.WriteTo(writer);
+    }
+
+    JObject ProcessEntity(JObject obj, Entity e)
+    {
+        var traitIds = e.Traits.Select(t => t.Id).ToList();
+        var traits = Context.Traits.Where(t => traitIds.Contains(t.Id)).Include(t => t.Entity).ToList();
+        
+
+        foreach (var item in (JArray) obj.SelectToken("Traits"))
+        {
+            JObject o = (JObject) item;
+            int id = o.SelectToken("Id").ToObject<int>();
+
+            o.Add("Name", traits.FirstOrDefault(t => t.Id == id)!.Entity.Name);
+        }
+
+        obj.Remove("Description");
+
+        
+
+        return obj;
+    }
+
+
+
+
+    private JArray GetFromSet<T>(DbSet<T> set, Func<T, bool> where) where T : Type
+    {
+        return new(set.Where(where).Select(JToken.FromObject).ToArray());
+    }
+
+
+    private JObject Process(JsonWriter writer, Entity e, JsonSerializer serializer)
+    {
+        JObject result = new();
+
+
+
+        // result.Add("Aliases", GetFromSet<EntityAlias>(context.EntityAliases, o => o.Entity == e));
+        result.Add("Sources", new JArray(e.Sources.Select(o => JToken.FromObject(o)).ToArray()));
+        result.Add("Keywords", new JArray(e.Keywords.Select(o => JToken.FromObject(o)).ToArray()));
+        result.Add("Externals", new JArray(e.Externals.Select(o => JToken.FromObject(o)).ToArray()));
+        result.Add("Traits", new JArray(e.Traits.Select(o => JToken.FromObject(o)).ToArray()));
+
+        return result;
+    }
+
+
+
+
+
+
+
+
+    public override bool CanRead => false;
+
+    public override object? ReadJson(JsonReader reader, Type objectType, object? existingValue, JsonSerializer serializer)
+    {
+        throw new NotImplementedException("Unnecessary because CanRead is false. The type will skip the converter.");
+    }
+
+
+    private abstract class Conventer<T>(JsonWriter writer, T value, JsonSerializer serializer, Pf2eDbContext context)
+    {
+        public JsonWriter Writer { get; } = writer;
+        public T Value { get; } = value;
+        public JsonSerializer Serializer { get; } = serializer;
+        public Pf2eDbContext Context { get; } = context;
+
+        public abstract JObject Process();
+    }
+
+}