using System;
using System.Linq;
using System.Reflection;
using FluentNHibernate.MappingModel;
using FluentNHibernate.MappingModel.Collections;

namespace FluentNHibernate.Conventions.Inspections
{
    public class ManyToManyInspector : IManyToManyInspector
    {
        private readonly InspectorModelMapper<IManyToManyInspector, ManyToManyMapping> mappedProperties = new InspectorModelMapper<IManyToManyInspector, ManyToManyMapping>();
        private readonly ManyToManyMapping mapping;

        public ManyToManyInspector(ManyToManyMapping mapping)
        {
            this.mapping = mapping;
            mappedProperties.Map(x => x.LazyLoad, x => x.Lazy);
        }

        public Type EntityType
        {
            get { return mapping.ContainingEntityType; }
        }

        public string StringIdentifierForModel
        {
            get { return mapping.Class.Name; }
        }

        public bool IsSet(Member property)
        {
            return mapping.IsSpecified(mappedProperties.Get(property));
        }

        public IDefaultableEnumerable<IColumnInspector> Columns
        {
            get
            {
                return mapping.Columns.UserDefined
                    .Select(x => new ColumnInspector(mapping.ContainingEntityType, x))
                    .Cast<IColumnInspector>()
                    .ToDefaultableList();
            }
        }

        public Type ChildType
        {
            get { return mapping.ChildType; }
        }

        public TypeReference Class
        {
            get { return mapping.Class; }
        }

        public Fetch Fetch
        {
            get { return Fetch.FromString(mapping.Fetch); }
        }

        public string ForeignKey
        {
            get { return mapping.ForeignKey; }
        }

        public bool LazyLoad
        {
            get { return mapping.Lazy; }
        }

        public bool Unique
        {
            get { return mapping.Unique; }
        }

        public NotFound NotFound
        {
            get { return NotFound.FromString(mapping.NotFound); }
        }

        public Type ParentType
        {
            get { return mapping.ParentType; }
        }

        public string Where
        {
            get { return mapping.Where; }
        }

        public string OrderBy
        {
            get { return mapping.OrderBy; }
        }
    }
}