using System.Collections.Generic;
using System.Linq;
using Umbraco.Web.Routing;

namespace Umbraco.Web.PublishedCache.NuCache
{
    /// <summary>
    /// Implements <see cref="IDomainCache"/> for NuCache.
    /// </summary>
    internal class DomainCache : IDomainCache
    {
        private readonly SnapDictionary<int, Domain>.Snapshot _snapshot;

        /// <summary>
        /// Initializes a new instance of the <see cref="DomainCache"/> class.
        /// </summary>
        public DomainCache(SnapDictionary<int, Domain>.Snapshot snapshot, string defaultCulture)
        {
            _snapshot = snapshot;
            DefaultCulture = defaultCulture;
        }

        /// <inheritdoc />
        public IEnumerable<Domain> GetAll(bool includeWildcards)
        {
            var list = _snapshot.GetAll();
            if (includeWildcards == false) list = list.Where(x => x.IsWildcard == false);
            return list;
        }

        /// <inheritdoc />
        public IEnumerable<Domain> GetAssigned(int documentId, bool includeWildcards = false)
        {
            // probably this could be optimized with an index
            // but then we'd need a custom DomainStore of some sort

            var list = _snapshot.GetAll();
            list = list.Where(x => x.ContentId == documentId);
            if (includeWildcards == false) list = list.Where(x => x.IsWildcard == false);
            return list;
        }

        /// <inheritdoc />
        public bool HasAssigned(int documentId, bool includeWildcards = false)
            => documentId > 0 && GetAssigned(documentId, includeWildcards).Any();

        /// <inheritdoc />
        public string DefaultCulture { get; }
    }
}