using Connected.Logistics.Documents.Receive;
using Connected.Middleware.Annotations;
using Connected.Notifications;
using Connected.Notifications.Events;
using Connected.ServiceModel;
using Microsoft.Extensions.Logging;

namespace Connected.Logistics.Documents.Listeners;
[Middleware<IReceivePostingDocumentService>(nameof(IReceivePostingDocumentService.PlannedItemUpdated))]
internal sealed class PlannedItemListener : EventListener<PrimaryKeyEventArgs<long>>
{
	public PlannedItemListener(ILogger<PlannedItemListener> logger, IReceivePostingDocumentService documents, IReceiveDocumentService receiveDocuments)
	{
		Logger = logger;
		Documents = documents;
		ReceiveDocuments = receiveDocuments;
	}

	private ILogger<PlannedItemListener> Logger { get; }
	private IReceivePostingDocumentService Documents { get; }
	private IReceiveDocumentService ReceiveDocuments { get; }

	protected override async Task OnInvoke()
	{
		if (await Documents.SelectPlannedItem(Arguments.Id) is not IReceivePlannedItem item)
		{
			Logger.LogWarning("The IReceivePlannedItem not found ({id}}.", Arguments.Id);
			return;
		}

		if (await ReceiveDocuments.SelectItem(item.Item) is not IReceiveItem receiveItem)
		{
			Logger.LogWarning("The IReceiveItem not found ({id}}.", item.Item);
			return;
		}

		if (await Documents.Select(item.Document) is not IReceivePostingDocument document)
		{
			Logger.LogWarning("The IReceivePostingDocument not found ({id}}.", item.Document);
			return;
		}

		await UpdateOpenItems(document);
		await UpdatePostedQuantity(receiveItem);
	}

	private async Task UpdateOpenItems(IReceivePostingDocument document)
	{
		var items = await Documents.QueryPlannedItems(new PrimaryKeyArgs<int> { Id = document.Id });

		await Documents.Patch(new PatchArgs<int>
		{
			Id = document.Id,
			Properties = new Dictionary<string, object>
			{
				{nameof(IReceivePostingDocument.OpenItemCount), items.Count(f => f.PostedQuantity < f.Quantity) }
			}
		});
	}

	private async Task UpdatePostedQuantity(IReceiveItem item)
	{
		var items = await Documents.QueryPlannedItems(new PrimaryKeyArgs<long> { Id = item.Id });

		await Documents.PatchPlanedItem(new PatchArgs<long>
		{
			Id = item.Id,
			Properties = new Dictionary<string, object>
			{
				{nameof(IReceiveItem.PostedQuantity), items.Sum(f => f.PostedQuantity) }
			}
		});
	}
}