using AutoMapper;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using Umbraco.Core.Models;
using Umbraco.Core.Services;
using Umbraco.Web.Models.ContentEditing;
using Umbraco.Web.Mvc;
using Umbraco.Web.WebApi;
using Umbraco.Web.WebApi.Filters;
using Umbraco.Web.Trees;
using Umbraco.Core.IO;

namespace Umbraco.Web.Editors
{
    [PluginController("UmbracoApi")]
    [PrefixlessBodyModelValidator]
    [UmbracoApplicationAuthorizeAttribute(Core.Constants.Applications.Settings)]
    public class CodeFileController : BackOfficeNotificationsController
    {

        /// <summary>
        /// Used to create a brand new file
        /// </summary>
        /// <param name="type">This is a string but will be 'scripts' 'partialViews', 'partialViewMacros'</param>
        /// <param name="display"></param>
        /// <returns>Will return a simple 200 if file creation succeeds</returns>
        [ValidationFilter]
        public HttpResponseMessage PostCreate(string type, CodeFileDisplay display)
        {
            switch (type)
            {
                case Core.Constants.Trees.PartialViews:
                    var view = new PartialView(display.VirtualPath);
                    var result = Services.FileService.CreatePartialView(view, display.Snippet, Security.CurrentUser.Id);
                    return result.Success == true ? Request.CreateResponse(HttpStatusCode.OK) : Request.CreateNotificationValidationErrorResponse(result.Exception.Message);

                case Core.Constants.Trees.PartialViewMacros:
                    var viewMacro = new PartialView(display.VirtualPath);
                    var resultMacro = Services.FileService.CreatePartialViewMacro(viewMacro, display.Snippet, Security.CurrentUser.Id);
                    return resultMacro.Success == true ? Request.CreateResponse(HttpStatusCode.OK) : Request.CreateNotificationValidationErrorResponse(resultMacro.Exception.Message);

                case Core.Constants.Trees.Scripts:
                    var script = new Script(display.VirtualPath);
                    Services.FileService.SaveScript(script, Security.CurrentUser.Id);
                    return Request.CreateResponse(HttpStatusCode.OK);

                default:
                    return Request.CreateResponse(HttpStatusCode.NotFound);
            }
        }

        /// <summary>
        /// Used to get a specific file from disk via the FileService
        /// </summary>
        /// <param name="type">This is a string but will be 'scripts' 'partialViews', 'partialViewMacros'</param>
        /// <param name="virtualPath">The filename or urlencoded path of the file to open</param>
        /// <returns>The file and its contents from the virtualPath</returns>
        public CodeFileDisplay GetByPath(string type, string virtualPath)
        {
            if (string.IsNullOrWhiteSpace(type) || string.IsNullOrWhiteSpace(virtualPath))
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }

            virtualPath = System.Web.HttpUtility.UrlDecode(virtualPath);
            

            switch (type)
            {
                case Core.Constants.Trees.PartialViews:
                    var view = Services.FileService.GetPartialView(virtualPath);
                    if (view != null)
                    {
                        var display = Mapper.Map<IPartialView, CodeFileDisplay>(view);
                        display.FileType = Core.Constants.Trees.PartialViews;
                        display.Path = Url.GetTreePathFromFilePath(view.Path);
                        return display;
                    }
                    return null;

                case Core.Constants.Trees.PartialViewMacros:
                    var viewMacro = Services.FileService.GetPartialViewMacro(virtualPath);
                    if (viewMacro != null)
                    {
                        var display = Mapper.Map<IPartialView, CodeFileDisplay>(viewMacro);
                        display.FileType = Core.Constants.Trees.PartialViewMacros;
                        display.Path = Url.GetTreePathFromFilePath(viewMacro.Path);
                        return display;
                    }
                    return null;

                case Core.Constants.Trees.Scripts:
                    var script = Services.FileService.GetScriptByName(virtualPath);
                    if (script != null)
                    {
                        var display = Mapper.Map<Script, CodeFileDisplay>(script);
                        display.FileType = Core.Constants.Trees.Scripts;
                        display.Path = Url.GetTreePathFromFilePath(script.Path);
                        return display;
                    }
                    return null;
            }

            throw new HttpResponseException(HttpStatusCode.NotFound);
        }

        /// <summary>
        /// Used to delete a specific file from disk via the FileService
        /// </summary>
        /// <param name="type">This is a string but will be 'scripts' 'partialViews', 'partialViewMacros'</param>
        /// <param name="virtualPath">The filename or urlencoded path of the file to delete</param>
        /// <returns>Will return a simple 200 if file deletion succeeds</returns>
        [HttpDelete]
        [HttpPost]
        public HttpResponseMessage Delete(string type, string virtualPath)
        {
            if (string.IsNullOrWhiteSpace(type) == false && string.IsNullOrWhiteSpace(virtualPath) == false)
            {
                switch (type)
                {
                    case Core.Constants.Trees.PartialViews:
                        if (Services.FileService.DeletePartialView(virtualPath, Security.CurrentUser.Id))
                        {
                            return Request.CreateResponse(HttpStatusCode.OK);
                        }
                        return Request.CreateErrorResponse(HttpStatusCode.NotFound, "No Partial View found with the specified path");

                    case Core.Constants.Trees.PartialViewMacros:
                        if (Services.FileService.DeletePartialViewMacro(virtualPath, Security.CurrentUser.Id))
                        {
                            return Request.CreateResponse(HttpStatusCode.OK);
                        }
                        return Request.CreateErrorResponse(HttpStatusCode.NotFound, "No Partial View Macro found with the specified path");

                    case Core.Constants.Trees.Scripts:
                        if (Services.FileService.GetScriptByName(virtualPath) != null)
                        {
                            Services.FileService.DeleteScript(virtualPath, Security.CurrentUser.Id);
                            return Request.CreateResponse(HttpStatusCode.OK);
                        }
                        return Request.CreateErrorResponse(HttpStatusCode.NotFound, "No Script found with the specified path");

                    default:
                        return Request.CreateResponse(HttpStatusCode.NotFound);
                }
            }

            throw new HttpResponseException(HttpStatusCode.NotFound);
        }

        /// <summary>
        /// Used to save/update an existing file after its initial creation
        /// </summary>
        /// <param name="display"></param>
        /// <returns>The updated CodeFileDisplay model</returns>
        public CodeFileDisplay PostSave(CodeFileDisplay display)
        {
            if (ModelState.IsValid == false)
            {
                throw new HttpResponseException(Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState));
            }

            if (display == null || string.IsNullOrWhiteSpace(display.FileType))
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }


            switch (display.FileType)
            {
                case Core.Constants.Trees.PartialViews:
                    var view = Services.FileService.GetPartialView(display.VirtualPath);
                    if (view != null)
                    {
                        // might need to find the path
                        var orgPath = view.OriginalPath.Substring(0, view.OriginalPath.IndexOf(view.Name));
                        view.Path = orgPath + display.Name;
                        view.Content = display.Content;

                        //Save the file and update the response to reflect any name and path changes
                        var result = Services.FileService.SavePartialView(view, Security.CurrentUser.Id);
                        if (result.Success == true)
                        {
                            display = Mapper.Map(result.Result, display);
                            display.Path = Url.GetTreePathFromFilePath(view.Path);
                            return display;
                        }

                        display.AddErrorNotification(
                            Services.TextService.Localize("speechBubbles/partialViewErrorHeader"),
                            Services.TextService.Localize("speechBubbles/partialViewErrorText"));
                    }
                    else
                    {
                        throw new HttpResponseException(HttpStatusCode.NotFound);
                    }
                    break;

                case Core.Constants.Trees.PartialViewMacros:
                    var viewMacro = Services.FileService.GetPartialViewMacro(display.VirtualPath);
                    if (viewMacro != null)
                    {
                        viewMacro.Content = display.Content;
                        viewMacro.Path = display.Name;

                        //save the file and update the display to reflect any path and name changes
                        var result = Services.FileService.SavePartialViewMacro(viewMacro, Security.CurrentUser.Id);
                        if (result.Success == true)
                        {
                            display = Mapper.Map(result.Result, display);
                            display.Path = Url.GetTreePathFromFilePath(result.Result.Path);
                            return display;
                        }

                        display.AddErrorNotification(
                            Services.TextService.Localize("speechBubbles/partialViewErrorHeader"),
                            Services.TextService.Localize("speechBubbles/partialViewErrorText"));
                    }
                    else
                    {
                        throw new HttpResponseException(HttpStatusCode.NotFound);
                    }
                    break;

                case Core.Constants.Trees.Scripts:
                    var script = Services.FileService.GetScriptByName(display.VirtualPath);
                    if (script != null)
                    {
                        script.Content = display.Content;
                        script.Path = display.Name;
                        
                        Services.FileService.SaveScript(script, Security.CurrentUser.Id);
                        display = Mapper.Map(script, display);
                        display.Path = Url.GetTreePathFromFilePath(script.Path);
                        return display;
                        

                    }
                    else
                    {
                        throw new HttpResponseException(HttpStatusCode.NotFound);
                    }
                    break;

                default:
                    throw new HttpResponseException(HttpStatusCode.NotFound);
            }

            return display;
        }
    }
}