using System;
using System.Collections.Generic;
using System.Globalization;
using System.Text.Json.Nodes;
using Json.Schema;
using Questionable.Model;
using Questionable.Model.Questing;
using Questionable.QuestPaths;

namespace Questionable.Validation.Validators;

internal sealed class JsonSchemaValidator : IQuestValidator
{
	private readonly Dictionary<ElementId, JsonNode> _questNodes = new Dictionary<ElementId, JsonNode>();

	private JsonSchema? _questSchema;

	public JsonSchemaValidator()
	{
		SchemaRegistry.Global.Register(new Uri("https://qstxiv.github.io/schema/common-aethernetshard.json"), JsonSchema.FromStream(AssemblyModelLoader.CommonAethernetShard).AsTask().Result);
		SchemaRegistry.Global.Register(new Uri("https://qstxiv.github.io/schema/common-aetheryte.json"), JsonSchema.FromStream(AssemblyModelLoader.CommonAetheryte).AsTask().Result);
		SchemaRegistry.Global.Register(new Uri("https://qstxiv.github.io/schema/common-classjob.json"), JsonSchema.FromStream(AssemblyModelLoader.CommonClassJob).AsTask().Result);
		SchemaRegistry.Global.Register(new Uri("https://qstxiv.github.io/schema/common-completionflags.json"), JsonSchema.FromStream(AssemblyModelLoader.CommonCompletionFlags).AsTask().Result);
		SchemaRegistry.Global.Register(new Uri("https://qstxiv.github.io/schema/common-vector3.json"), JsonSchema.FromStream(AssemblyModelLoader.CommonVector3).AsTask().Result);
	}

	public IEnumerable<ValidationIssue> Validate(Quest quest)
	{
		if (_questSchema == null)
		{
			_questSchema = JsonSchema.FromStream(AssemblyQuestLoader.QuestSchema).AsTask().Result;
		}
		if (_questNodes.TryGetValue(quest.Id, out JsonNode value) && !_questSchema.Evaluate(value, new EvaluationOptions
		{
			Culture = CultureInfo.InvariantCulture,
			OutputFormat = OutputFormat.List
		}).IsValid)
		{
			yield return new ValidationIssue
			{
				ElementId = quest.Id,
				Sequence = null,
				Step = null,
				Type = EIssueType.InvalidJsonSchema,
				Severity = EIssueSeverity.Error,
				Description = "JSON Validation failed"
			};
		}
	}

	public void Enqueue(ElementId elementId, JsonNode questNode)
	{
		_questNodes[elementId] = questNode;
	}

	public void Reset()
	{
		_questNodes.Clear();
	}
}