using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using FluentNHibernate.Mapping;
using FluentNHibernate.MappingModel;
using FluentNHibernate.MappingModel.ClassBased;

namespace FluentNHibernate.Conventions.Inspections
{
    public abstract class ComponentBaseInspector : IComponentBaseInspector
    {
        private readonly ComponentMapping mapping;

        public ComponentBaseInspector(ComponentMapping mapping)
        {
            this.mapping = mapping;
        }

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

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

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

        public abstract bool IsSet(Member property);

        public Member Property
        {
            get { return mapping.Member; }
        }

        public IParentInspector Parent
        {
            get
            {
                if (mapping.Parent == null)
                    return new ParentInspector(new ParentMapping());

                return new ParentInspector(mapping.Parent);
            }
        }

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

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

        public IEnumerable<IAnyInspector> Anys
        {
            get
            {
                return mapping.Anys
                    .Select(x => new AnyInspector(x))
                    .Cast<IAnyInspector>();
            }
        }

        public IEnumerable<ICollectionInspector> Collections
        {
            get
            {
                return mapping.Collections
                    .Select(x => new CollectionInspector(x))
                    .Cast<ICollectionInspector>();
            }
        }

        public IEnumerable<IComponentBaseInspector> Components
        {
            get
            {
                return mapping.Components
                    .Select(x =>
                    {
                        if (x.ComponentType == ComponentType.Component)
                            return (IComponentBaseInspector)new ComponentInspector((ComponentMapping)x);

                        return (IComponentBaseInspector)new DynamicComponentInspector((ComponentMapping)x);
                    });
            }
        }

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

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

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

        public TypeReference Class
        {
            get { return mapping is ComponentMapping ? ((ComponentMapping)mapping).Class : null; }
        }

        public IEnumerable<IOneToOneInspector> OneToOnes
        {
            get
            {
                return mapping.OneToOnes
                    .Select(x => new OneToOneInspector(x))
                    .Cast<IOneToOneInspector>();
            }
        }

        public IEnumerable<IPropertyInspector> Properties
        {
            get
            {
                return mapping.Properties
                    .Select(x => new PropertyInspector(x))
                    .Cast<IPropertyInspector>();
            }
        }

        public IEnumerable<IManyToOneInspector> References
        {
            get
            {
                return mapping.References
                    .Select(x => new ManyToOneInspector(x))
                    .Cast<IManyToOneInspector>();
            }
        }

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