using System.Collections.Generic;
using System.Linq;
using Questionable.Data;
using Questionable.Model;
using Questionable.Model.Common;
using Questionable.Model.Questing;

namespace Questionable.Validation.Validators;

internal sealed class AethernetShortcutValidator : IQuestValidator
{
	private readonly AetheryteData _aetheryteData;

	public AethernetShortcutValidator(AetheryteData aetheryteData)
	{
		_aetheryteData = aetheryteData;
	}

	public IEnumerable<ValidationIssue> Validate(Quest quest)
	{
		return (from x in quest.AllSteps()
			select Validate(quest.Id, x.Sequence.Sequence, x.StepId, x.Step.AethernetShortcut) into x
			where x != null
			select x).Cast<ValidationIssue>();
	}

	private ValidationIssue? Validate(ElementId elementId, int sequenceNo, int stepId, AethernetShortcut? aethernetShortcut)
	{
		if (aethernetShortcut == null)
		{
			return null;
		}
		ushort valueOrDefault = _aetheryteData.AethernetGroups.GetValueOrDefault(aethernetShortcut.From);
		ushort valueOrDefault2 = _aetheryteData.AethernetGroups.GetValueOrDefault(aethernetShortcut.To);
		if (valueOrDefault != valueOrDefault2)
		{
			return new ValidationIssue
			{
				ElementId = elementId,
				Sequence = (byte)sequenceNo,
				Step = stepId,
				Type = EIssueType.InvalidAethernetShortcut,
				Severity = EIssueSeverity.Error,
				Description = $"Invalid aethernet shortcut: {aethernetShortcut.From} to {aethernetShortcut.To}"
			};
		}
		return null;
	}
}