using System.Collections.Immutable;
using Connected.Caching;
using Connected.Entities;
using Connected.Entities.Storage;
using Connected.Notifications.Events;
using Connected.ServiceModel;
using Connected.Services;

namespace Connected.Logistics.Types.Warehouses;
internal sealed class WarehouseOps
{
	public sealed class Delete : ServiceAction<PrimaryKeyArgs<int>>
	{
		public Delete(IStorageProvider storage, IWarehouseService warehouses, IEventService events, ICachingService cache)
		{
			Storage = storage;
			Warehouses = warehouses;
			Events = events;
			Cache = cache;
		}

		private IStorageProvider Storage { get; }
		private IWarehouseService Warehouses { get; }
		private IEventService Events { get; }
		private ICachingService Cache { get; }

		protected override async Task OnInvoke()
		{
			if (await Warehouses.Select(Arguments.Id) is not IWarehouse warehouse)
				return;

			SetState(warehouse);

			await Storage.Open<Warehouse>().Update(Arguments.AsEntity<Warehouse>(State.Deleted));
		}

		protected override async Task OnCommitted()
		{
			await Cache.Remove(Warehouse.EntityKey, Arguments.Id);
			await Events.Enqueue(this, Events, nameof(IWarehouseService.Deleted), Arguments);
		}
	}

	public sealed class Insert : ServiceFunction<InsertWarehouseArgs, int>
	{
		public Insert(IStorageProvider storage, IEventService events)
		{
			Storage = storage;
			Events = events;
		}

		private IStorageProvider Storage { get; }
		private IEventService Events { get; }

		protected override async Task<int> OnInvoke()
		{
			return (await Storage.Open<Warehouse>().Update(Arguments.AsEntity<Warehouse>(State.New))).Id;
		}

		protected override async Task OnCommitted()
		{
			await Events.Enqueue(this, Events, nameof(IWarehouseService.Inserted), Arguments);
		}
	}

	public sealed class Query : ServiceFunction<QueryArgs, ImmutableList<IWarehouse>>
	{
		public Query(IWarehouseCache warehouses)
		{
			Warehouses = warehouses;
		}

		public IWarehouseCache Warehouses { get; }

		protected override async Task<ImmutableList<IWarehouse>> OnInvoke()
		{
			return await (from e in Warehouses
						  select e).WithArguments(Arguments).AsEntities<IWarehouse>();
		}
	}

	public sealed class Lookup : ServiceFunction<PrimaryKeyListArgs<int>, ImmutableList<IWarehouse>>
	{
		public Lookup(IWarehouseCache warehouses)
		{
			Warehouses = warehouses;
		}

		public IWarehouseCache Warehouses { get; }

		protected override async Task<ImmutableList<IWarehouse>> OnInvoke()
		{
			return await (from e in Warehouses
						  where Arguments.IdList.Any(f => f == e.Id)
						  select e).AsEntities<IWarehouse>();
		}
	}

	public sealed class Select : NullableServiceFunction<PrimaryKeyArgs<int>, IWarehouse>
	{
		public Select(IWarehouseCache warehouses)
		{
			Warehouses = warehouses;
		}

		private IWarehouseCache Warehouses { get; }

		protected override async Task<IWarehouse?> OnInvoke()
		{
			return await (from e in Warehouses
						  where e.Id == Arguments.Id
						  select e).AsEntity();
		}
	}

	public sealed class Update : ServiceAction<UpdateWarehouseArgs>
	{
		public Update(IStorageProvider storage, IWarehouseCache cache, IWarehouseService warehouses, IEventService events)
		{
			Storage = storage;
			Cache = cache;
			Warehouses = warehouses;
			Events = events;
		}

		private IStorageProvider Storage { get; }
		private IWarehouseCache Cache { get; }
		private IWarehouseService Warehouses { get; }
		private IEventService Events { get; }

		protected override async Task OnInvoke()
		{
			if (SetState(await Warehouses.Select(Arguments.Id)) is not Warehouse entity)
				return;

			await Storage.Open<Warehouse>().Update(entity.Merge(Arguments, State.Default), Arguments, async () =>
			{
				await Cache.Refresh(Arguments.Id);

				return SetState(await Warehouses.Select(Arguments.Id)) as Warehouse;
			});
		}

		protected override async Task OnCommitted()
		{
			await Cache.Refresh(Arguments.Id);
			await Events.Enqueue(this, Warehouses, nameof(Warehouses.Updated), Arguments);
		}
	}
}