namespace System.Web.Mvc {
    using System.Globalization;
    using System.IO;
    using System.Web.Mvc.Resources;

    public abstract class BuildManagerCompiledView : IView {
        internal IViewPageActivator _viewPageActivator;
        private IBuildManager _buildManager;
        private ControllerContext _controllerContext;

        protected BuildManagerCompiledView(ControllerContext controllerContext, string viewPath)
            : this(controllerContext, viewPath, null) {
        }

        protected BuildManagerCompiledView(ControllerContext controllerContext, string viewPath, IViewPageActivator viewPageActivator) 
            :this(controllerContext, viewPath, viewPageActivator, null){
        }

        internal BuildManagerCompiledView(ControllerContext controllerContext, string viewPath, IViewPageActivator viewPageActivator, IDependencyResolver dependencyResolver){
            if (controllerContext == null) {
                throw new ArgumentNullException("controllerContext");
            }
            if (String.IsNullOrEmpty(viewPath)) {
                throw new ArgumentException(MvcResources.Common_NullOrEmpty, "viewPath");
            }

            _controllerContext = controllerContext;

            ViewPath = viewPath;

            _viewPageActivator = viewPageActivator ?? new BuildManagerViewEngine.DefaultViewPageActivator(dependencyResolver);
        }

        internal IBuildManager BuildManager {
            get {
                if (_buildManager == null) {
                    _buildManager = new BuildManagerWrapper();
                }
                return _buildManager;
            }
            set {
                _buildManager = value;
            }
        }

        public string ViewPath {
            get;
            protected set;
        }

        public void Render(ViewContext viewContext, TextWriter writer) {
            if (viewContext == null) {
                throw new ArgumentNullException("viewContext");
            }

            object instance = null;

            Type type = BuildManager.GetCompiledType(ViewPath);
            if (type != null) {
                instance = _viewPageActivator.Create(_controllerContext, type);
            }

            if (instance == null) {
                throw new InvalidOperationException(
                    String.Format(
                        CultureInfo.CurrentCulture,
                        MvcResources.CshtmlView_ViewCouldNotBeCreated,
                        ViewPath
                    )
                );
            }

            RenderView(viewContext, writer, instance);
        }

        protected abstract void RenderView(ViewContext viewContext, TextWriter writer, object instance);
    }
}