using System;

using System.Collections.Generic;

using System.Collections.ObjectModel;

using System.Linq;

using System.Threading.Tasks;

using System.Windows.Input;

using Microsoft.Expression.Interactivity.Core;

using Raven.Abstractions.Data;

using Raven.Abstractions.Util;

using Raven.Client.Changes;

using Raven.Studio.Behaviors;

using Raven.Studio.Infrastructure;



namespace Raven.Studio.Models

{

	public class ApiKeysSectionModel : SettingsSectionModel, IAutoCompleteSuggestionProvider

	{

		public ApiKeysSectionModel()

		{

			SectionName = "Api Keys";

			ApplicationModel.Current.Server.Value.RawUrl = null;



			OriginalApiKeys = new ObservableCollection<ApiKeyDefinition>();

			ApiKeys = new ObservableCollection<ApiKeyDefinition>();



			var session = ApplicationModel.Current.Server.Value.DocumentStore.OpenAsyncSession();

			session.Advanced.LoadStartingWithAsync<ApiKeyDefinition>("Raven/ApiKeys/", pageSize:256).ContinueOnSuccessInTheUIThread(

				apiKeys =>

				{

					OriginalApiKeys = new ObservableCollection<ApiKeyDefinition>(apiKeys);

					ApiKeys = new ObservableCollection<ApiKeyDefinition>(apiKeys);

					OnPropertyChanged(() => ApiKeys);

				});

		}



		public ObservableCollection<ApiKeyDefinition> ApiKeys { get; set; }

		public ObservableCollection<ApiKeyDefinition> OriginalApiKeys { get; set; }

		public string SearchApiKeys { get; set; }



		public ApiKeyDefinition SelectedApiKey { get; set; }



		public ICommand AddApiKeyCommand

		{

			get { return new ActionCommand(() => ApiKeys.Add(new ApiKeyDefinition())); }

		}



		public ICommand DeleteApiKey

		{

			get { return new ActionCommand(DeleteApi); }

		}



		public ICommand GenerateSecretCommand {get{return new ActionCommand(GenerateSecret);}}



		public ICommand AddDatabaseAccess

		{

			get

			{

				return new ActionCommand(() =>

				{

					SelectedApiKey.Databases.Add(new DatabaseAccess());

					Update();

				});

			}

		}



		public ICommand DeleteDatabaseAccess { get { return new ActionCommand(DeleteDatabaseAccessCommand); } }



		public ICommand Search { get { return new ActionCommand(SearchApiKeysCommand); } }



		private void SearchApiKeysCommand()

		{

			var session = ApplicationModel.Current.Server.Value.DocumentStore.OpenAsyncSession();

			session.Advanced.LoadStartingWithAsync<ApiKeyDefinition>("Raven/ApiKeys/" + SearchApiKeys).ContinueOnSuccessInTheUIThread(

				apiKeys =>

				{

					OriginalApiKeys = new ObservableCollection<ApiKeyDefinition>(apiKeys);

					ApiKeys = new ObservableCollection<ApiKeyDefinition>(apiKeys);

					OnPropertyChanged(() => ApiKeys);

				});

		}



		private void DeleteDatabaseAccessCommand(object parameter)

		{

			var access = parameter as DatabaseAccess;

			if (access == null)

				return;



			SelectedApiKey.Databases.Remove(access);



			Update();

		}



		private void DeleteApi(object parameter)

		{

			var key = parameter as ApiKeyDefinition;

			ApiKeys.Remove(key ?? SelectedApiKey);



			Update();

		}



		private void GenerateSecret(object parameter)

		{

			var key = parameter as ApiKeyDefinition;

			if(key == null)

				return;

			key.Secret = Base62Util.ToBase62(Guid.NewGuid()).Replace("-", "");

		}



		public Task<IList<object>> ProvideSuggestions(string enteredText)

		{

			var list = ApplicationModel.Current.Server.Value.Databases.Cast<object>().ToList();

			list.Add("*");

			return TaskEx.FromResult<IList<object>>(list);

		}



		public void Update()

		{

			ApiKeys = new ObservableCollection<ApiKeyDefinition>(ApiKeys);

			OnPropertyChanged(() => ApiKeys);

		}

	}

}