using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using PARR.Core.Repositories.Interfaces.Unit;
using PARR.DAL.Context;
using PARR.DAL.Repositories.Base;


namespace PARR.DAL.Repositories.Unit
{
    internal class UnitRepository : BaseRepository<Domain.Entities.Unit.Unit>, IUnitRepository
    {
        public UnitRepository(DataContext dataContext, ILogger<UnitRepository> logger) : base(logger, dataContext) { }

        public IQueryable<Domain.Entities.Unit.Unit> GetWithIncludes()
        {
            return Get()
                    .Include(t => t.UnitValues)
                        .ThenInclude(t => t.Field)
                    .Include(t => t.UnitValues)
                        .ThenInclude(t => t.Value);
        }


        public IQueryable<Guid> GetInitialUnitIds(string dbValueMask)
        {
            return Get().AsNoTracking()
                            .Where(unit => EF.Functions.ILike(unit.Name, dbValueMask))
                            .Select(u => u.Id);
        }


        public async Task<List<Guid>> FindUnitIdsByValueIdsAsync(
            IReadOnlyList<Guid> unitIds,
            Guid fieldId,
            IReadOnlyList<Guid> valueIds,
            CancellationToken ct = default)
        {
            if (valueIds.Count == 0)
                return new List<Guid>();

            return await EntitySet.AsNoTracking()
                .Where(u => unitIds.Contains(u.Id))
                .Where(u => u.UnitValues.Any(uv =>
                    uv.FieldId == fieldId &&
                    valueIds.Contains(uv.ValueId)))
                .Select(u => u.Id)
                .ToListAsync(ct);
        }
    }
}