using System;
using System.Collections.Generic;
using System.Security.Claims;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using OnlineAssessment.Common;
using OnlineAssessment.Data.EFCore;
using OnlineAssessment.Domain.Models;
using OnlineAssessment.Domain.ViewModels;

namespace OnlineAssessment.V1.Controllers
{
    [Authorize]
    [ApiVersion("1.0")]
    [Route("v{version:apiVersion}")]
    public class PracticeAttemptsController : BaseController<PracticeAttempts, EFCorePracticeAttemptRepository>
    {
        EFCorePracticeAttemptRepository _repository;
        string responseMessage = string.Empty;
        int institute_id;
        public PracticeAttemptsController(EFCorePracticeAttemptRepository repository) : base(repository)
        {
            _repository = repository;
        }


        #region PracticeAttempts

        /// <summary>
        /// Get all Practices 
        /// </summary>
        /// <param name="language"></param>
        /// <param name="sortBy"></param>
        /// <param name="sortOrder"></param>
        /// <returns></returns>
        [HttpGet("Batches/{batch_id}/LivePractices")]
        [ProducesResponseType(typeof(PracticeAttemptAllPracticePagedModel), 200)]
        [Authorize(Roles = "Student")]
        public IActionResult GetLivePractices(int batch_id, [FromQuery] string module, [FromQuery] int module_id, [FromQuery] string sortBy, string sortOrder, [FromQuery] int? pageNumber, [FromQuery] int? pageSize)
        {
            IActionResult returnResponse;
            int user_id = Security.GetIdFromJwtToken(UserClaim.UserId, HttpContext.User.Identity as ClaimsIdentity);
            PracticeAttemptAllPracticePagedModel practiceListPaged = new PracticeAttemptAllPracticePagedModel();
           
            if (pageNumber == null) pageNumber = 1;
            if (pageSize == null) pageSize = 20;

            dynamic theList = _repository.GetLivePracticesByModuleID(base.InstituteId, user_id, batch_id, module, module_id, sortBy, sortOrder);

            if(theList != null && theList is List<PracticeAttemptAllPracticeModel>)
            {
                if (pageNumber != null && pageSize != null)
                {
                    PaginatedList<PracticeAttemptAllPracticeModel> pList = PaginatedList<PracticeAttemptAllPracticeModel>.CreateAsync(theList, (int)pageNumber, (int)pageSize);
                    practiceListPaged.total_count = theList.Count;
                    practiceListPaged.total_pages = pList.TotalPages;
                    practiceListPaged.page_index = pList.PageIndex;
                    practiceListPaged.next = pList.HasNextPage;
                    practiceListPaged.previous = pList.HasPreviousPage;
                    practiceListPaged.practices = pList;
                }

                returnResponse = Ok(ReturnResponse.GetSuccessStatus(practiceListPaged));
            } 
            else if (theList is int && theList == (int)Message.NotAllowedToResource)
            {
                responseMessage = _repository.GetMessageByCode(Message.NotAllowedToResource.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.NotAllowedToResource, responseMessage));
            }
            else if (theList is int && theList == (int)Message.NoData)
            {
                responseMessage = _repository.GetMessageByCode(Message.NoData.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.NoData, responseMessage));
            }
            else
            {
                responseMessage = _repository.GetMessageByCode(Message.Failure.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.Failure, responseMessage));
            }

            return returnResponse;
        }

        /// <summary>
        /// Get all Practices 
        /// </summary>
        /// <param name="sortBy"></param>
        /// <param name="sortOrder"></param>
        /// <returns></returns>
        [HttpGet("Batches/{batch_id}/LiveAuthorPractices/{author_id}")]
        [ProducesResponseType(typeof(PracticeAttemptAllPracticePagedModel), 200)]
        [Authorize(Roles = "Student")]
        public IActionResult GetLiveAuthorPractices(int batch_id, int author_id, [FromQuery] string sortBy, string sortOrder, [FromQuery] int? pageNumber, [FromQuery] int? pageSize)
        {
            IActionResult returnResponse;
            int user_id = Security.GetIdFromJwtToken(UserClaim.UserId, HttpContext.User.Identity as ClaimsIdentity);
            PracticeAttemptAllPracticePagedModel practiceListPaged = new PracticeAttemptAllPracticePagedModel();

            if (pageNumber == null) pageNumber = 1;
            if (pageSize == null) pageSize = 10;

            dynamic theList = _repository.GetLivePracticesByAuthor(base.InstituteId, user_id, batch_id, author_id, sortBy, sortOrder);

            if(theList != null && theList is List<PracticeAttemptAllPracticeModel>)
            {
                if (pageNumber != null && pageSize != null)
                {
                    PaginatedList<PracticeAttemptAllPracticeModel> pList = PaginatedList<PracticeAttemptAllPracticeModel>.CreateAsync(theList, (int)pageNumber, (int)pageSize);
                    practiceListPaged.total_count = theList.Count;
                    practiceListPaged.total_pages = pList.TotalPages;
                    practiceListPaged.page_index = pList.PageIndex;
                    practiceListPaged.next = pList.HasNextPage;
                    practiceListPaged.previous = pList.HasPreviousPage;
                    practiceListPaged.practices = pList;
                }

                returnResponse = Ok(ReturnResponse.GetSuccessStatus(practiceListPaged));
            }
            else if (theList is int && theList == (int)Message.NoData)
            {
                responseMessage = _repository.GetMessageByCode(Message.NoData.ToString());
                returnResponse = Ok(ReturnResponse.GetFailureStatus((int)Message.NoData, responseMessage));
            }
            else if (theList is int && theList == (int)Message.NotAllowedToResource)
            {
                responseMessage = _repository.GetMessageByCode(Message.NotAllowedToResource.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.NotAllowedToResource, responseMessage));
            }
            else
            {
                responseMessage = _repository.GetMessageByCode(Message.Failure.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.Failure, responseMessage));
            }

            return returnResponse;
        }


        /// <summary>
        /// Get recent attempted Practices 
        /// </summary>
        /// <param name="language"></param>
        /// <param name="sortBy"></param>
        /// <param name="sortOrder"></param>
        /// <returns></returns>
        [HttpGet("Batches/{batch_id}/RecentPractices")]
        [ProducesResponseType(typeof(PracticeAttemptsPagedModel), 200)]
        [Authorize(Roles = "Student")]
        public IActionResult GetRecentPractices(int batch_id, [FromQuery] string sortBy, string sortOrder, [FromQuery] int? pageNumber, [FromQuery] int? pageSize)
        {
            IActionResult returnResponse;
            int user_id = Security.GetIdFromJwtToken(UserClaim.UserId, HttpContext.User.Identity as ClaimsIdentity);
            PracticeAttemptsPagedModel practiceListPaged = new PracticeAttemptsPagedModel();

            if (pageNumber == null) pageNumber = 1;
            if (pageSize == null) pageSize = 10;

            if (sortBy == null) sortBy = "DATE";
            if (sortOrder == null) sortOrder = "D";

            dynamic theList = _repository.GetRecentPracticeAttempts(base.InstituteId, user_id, batch_id, sortBy, sortOrder);

            if(theList is List<PracticeAttemptsModel>)
            {
                if (pageNumber != null && pageSize != null)
                {
                    PaginatedList<PracticeAttemptsModel> pList = PaginatedList<PracticeAttemptsModel>.CreateAsync(theList, (int)pageNumber, (int)pageSize);
                    practiceListPaged.total_count = theList.Count;
                    practiceListPaged.total_pages = pList.TotalPages;
                    practiceListPaged.page_index = pList.PageIndex;
                    practiceListPaged.next = pList.HasNextPage;
                    practiceListPaged.previous = pList.HasPreviousPage;
                    practiceListPaged.practices = pList;
                }

                returnResponse = Ok(ReturnResponse.GetSuccessStatus(practiceListPaged));
            }
            else if (theList is int && theList == (int)Message.NotAllowedToResource)
            {
                responseMessage = _repository.GetMessageByCode(Message.NotAllowedToResource.ToString());
                returnResponse = Ok(ReturnResponse.GetFailureStatus((int)Message.NotAllowedToResource, responseMessage));
            }
            else if (theList is int && theList == (int)Message.NoData)
            {
                responseMessage = _repository.GetMessageByCode(Message.NoData.ToString());
                returnResponse = Ok(ReturnResponse.GetFailureStatus((int)Message.NoData, responseMessage));
            }
            else
            {
                responseMessage = _repository.GetMessageByCode(Message.Failure.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.Failure, responseMessage));
            }

            return returnResponse;
        }

        /// <summary>
        /// This endpoint will create a new attempt for the Practice.
        /// Error Conditions: Invalid Exam, Attempt limit Over, Unknown error
        /// </summary>
        /// <param name="language"></param>
        /// <param name="practice_id"></param>
        /// <returns></returns>
        [HttpPost("{language}/PracticeAttempts/{practice_id}/CreateAttempt")]
        [ProducesResponseType(typeof(PracticeAttemptAllQuestionsViewModel), 200)]
        [Authorize(Roles = "Student")]
        public IActionResult CreateNewPracticeAttempt(string language, int practice_id)
        {
            //Step1: Get Institute & User details
            IActionResult returnResponse = null;
            int user_id = Security.GetIdFromJwtToken(UserClaim.UserId, HttpContext.User.Identity as ClaimsIdentity);

            int language_id = _repository.GetLanguageIdByCode(language);
            if (language_id <= 0)
            {
                responseMessage = _repository.GetMessageByCode(Message.InvalidInput.ToString(), Constant.PracticeAttempt);
                return BadRequest(ReturnResponse.GetFailureStatus((int)Message.InvalidInput, responseMessage));
            }

            // Create an attaempt
            dynamic attempt = _repository.AddNewAttemptOfThePractice(base.InstituteId, user_id, language_id, practice_id);

            if (attempt is PracticeAttemptAllQuestionsViewModel)
            {
                returnResponse = Ok(ReturnResponse.GetSuccessStatus(attempt));
            }
            else if(attempt is int && attempt == (int)Message.NotAllowedToResource)
            {
                responseMessage = _repository.GetMessageByCode(Message.NotAllowedToResource.ToString(), Constant.PracticeAttempt);
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.NotAllowedToResource, responseMessage));
            }
            else if(attempt is int && attempt == (int)Message.NoData)
            {
                responseMessage = _repository.GetMessageByCode(Message.NoData.ToString(), Constant.PracticeAttempt);
                returnResponse = Ok(ReturnResponse.GetFailureStatus((int)Message.NoData, responseMessage));
            }
            else
            {
                responseMessage = _repository.GetMessageByCode(Message.Failure.ToString(), Constant.PracticeAttempt);
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.Failure, responseMessage));
            }

            return returnResponse;
        }

        /// <summary>
        /// This endpoint will return the details of the practice.
        /// Error Conditions: Invalid Practice, Unknown error
        /// </summary>
        /// <param name="practice_id"></param>
        /// <param name="language"></param>
        /// <returns></returns>
        [HttpGet("{language}/PracticeAttempts/{practice_id}")]
        [ProducesResponseType(typeof(PracticeDetailViewModel), 200)]
        [Authorize(Roles = "Student")]
        public IActionResult GetPracticeDetails(string language, int practice_id)
        {
            //Step1: Get Institute & User details
            IActionResult returnResponse = null;
            int user_id = Security.GetIdFromJwtToken(UserClaim.UserId, HttpContext.User.Identity as ClaimsIdentity);

            int language_id = _repository.GetLanguageIdByCode(language);
            if (language_id <= 0)
            {
                responseMessage = _repository.GetMessageByCode(Message.InvalidInput.ToString(), Constant.PracticeAttempt);
                return BadRequest(ReturnResponse.GetFailureStatus((int)Message.InvalidInput, responseMessage));
            }

            //TBD: Get usergroup & user classes and check if the exam class belongs to user classes

            // Create an attaempt
            dynamic attempt = _repository.GetPracticeDetails(base.InstituteId, user_id, practice_id);

            if(attempt is PracticeDetailViewModel)
            {
                returnResponse = Ok(ReturnResponse.GetSuccessStatus(attempt));
            }

            else if (attempt is int && attempt == (int)Message.NotAllowedToResource) 
            {
                responseMessage = _repository.GetMessageByCode(Message.NotAllowedToResource.ToString(), Constant.PracticeAttempt);
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.NotAllowedToResource, responseMessage));
            }
            else
            {
                responseMessage = _repository.GetMessageByCode(Message.Failure.ToString(), Constant.PracticeAttempt);
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.Failure, responseMessage));
            }

            return returnResponse;
        }

        /// <summary>
        /// Attach Bookmark To Praactices
        /// </summary>
        /// <param name="bookMarkStatus"></param>
        /// <returns></returns>
        [HttpPost("Batches/{batch_id}/PracticeAttempts/{practice_id}/Bookmark")]
        [ProducesResponseType(typeof(int), 200)]
        [Authorize(Roles = "Student")]
        public IActionResult AttachBookmarkToPractices(int batch_id, int practice_id, [FromBody] BookMarkStatus bookMarkStatus)
        {
            IActionResult returnResponse = null;
            string return_message = string.Empty;
            int user_id = Security.GetIdFromJwtToken(UserClaim.UserId, HttpContext.User.Identity as ClaimsIdentity);

            if (bookMarkStatus == null)
            {
                responseMessage = _repository.GetMessageByCode(Message.InvalidInput.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus(responseMessage));
            }

            int recordsEffected = 0;

            if (bookMarkStatus.isBookmark == true) recordsEffected = _repository.AttachBookmarkToPractices(base.InstituteId, batch_id, user_id, practice_id, out return_message);
            else recordsEffected = _repository.DetachBookmarkFromPractices(base.InstituteId, batch_id, user_id, practice_id, out return_message);

            if(recordsEffected > 0)
            {
                returnResponse = Ok(ReturnResponse.GetSuccessStatus(return_message));
            }

            else if (recordsEffected == (int)Message.NotAllowedToResource)
            {
                responseMessage = _repository.GetMessageByCode(Message.NotAllowedToResource.ToString());
                returnResponse = Ok(ReturnResponse.GetFailureStatus((int)Message.NotAllowedToResource, responseMessage));
            }
            else
            {
                responseMessage = _repository.GetMessageByCode(Message.Failure.ToString());
                returnResponse = Ok(ReturnResponse.GetFailureStatus((int)Message.Failure, responseMessage));
            }
            return returnResponse;
        }

        /// <summary>
        /// This endpoint returns all questions for an attempt.
        /// </summary>
        /// <param name="language"></param>
        /// <param name="practice_id"></param>
        /// <returns></returns>
        [HttpGet("{language}/Batches/{batch_id}/PracticeAttempts/{practice_id}/Revision")]
        [ProducesResponseType(typeof(PracticeAttemptAllQuestionsViewModel), 200)]
        [Authorize(Roles = "Student")]
        public IActionResult GetPracticeAttemptRevision(string language, int batch_id, int practice_id)
        {
            //Step1: Get Institute & User details
            IActionResult returnResponse = null;
            institute_id = base.InstituteId;
            int user_id = int.Parse(Security.GetValueFromToken("UserId", HttpContext.User.Identity as ClaimsIdentity));
            int role_id = int.Parse(Security.GetValueFromToken("RoleId", HttpContext.User.Identity as ClaimsIdentity));

            int language_id = _repository.GetLanguageIdByCode(language);
            if (language_id <= 0)
            {
                responseMessage = _repository.GetMessageByCode(Message.InvalidInput.ToString(), Constant.PracticeAttempt);
                return BadRequest(ReturnResponse.GetFailureStatus((int)Message.InvalidInput, responseMessage));
            }

            // Get an attaempt
            dynamic questions = _repository.GetPracticeAttemptPracticeQuestions(base.InstituteId, batch_id, user_id, language_id, practice_id);
            //TBD: if teacher get teacher classes and check if the exam class belongs to teacher classes

            if(questions is PracticeAttemptAllQuestionsViewModel)
            {
                returnResponse = Ok(ReturnResponse.GetSuccessStatus(questions));
            }

            if (questions is int && questions == (int)Message.NotAllowedToResource)
            {
                responseMessage = _repository.GetMessageByCode(Message.NotAllowedToResource.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.NotAllowedToResource, responseMessage));
            }
            else
            {
                responseMessage = _repository.GetMessageByCode(Message.Failure.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.Failure, responseMessage));
            }

            return returnResponse;
        }

        /// <summary>
        /// This endpoint returns attempted practice stats.
        /// </summary>
        /// <param name="batch_id"></param>
        /// <returns></returns>
        [HttpGet("Batches/{batch_id}/Coverage")]
        [ProducesResponseType(typeof(PracticeAttemptsCoverageViewModel), 200)]
        [Authorize(Roles = "Student")]
        public IActionResult GetBatchPracticeCoverage(int batch_id)
        {
            //Step1: Get Institute & User details
            IActionResult returnResponse = null;
            institute_id = base.InstituteId;
            int user_id = int.Parse(Security.GetValueFromToken("UserId", HttpContext.User.Identity as ClaimsIdentity));
                    
            dynamic coverage = _repository.GetPracticeAttemptsCoverage(institute_id, batch_id, user_id);

            if(coverage is PracticeAttemptsCoverageViewModel)
            {
                returnResponse = Ok(ReturnResponse.GetSuccessStatus(coverage));
            }
            else if (coverage is int && coverage == (int)Message.NotAllowedToResource)
            {
                responseMessage = _repository.GetMessageByCode(Message.NotAllowedToResource.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.NotAllowedToResource, responseMessage));
            }
            else if (coverage is int && coverage == (int)Message.NoData)
            {
                responseMessage = _repository.GetMessageByCode(Message.NoData.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.NoData, responseMessage));
            }
            else
            {
                responseMessage = _repository.GetMessageByCode(Message.Failure.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.Failure, responseMessage));
            }

            return returnResponse;
        }


        /// <summary>
        /// This endpoint saves the result of an attempt.
        /// </summary>
        /// <param name="attempt_id"></param>
        /// <param name="report"></param>
        /// <returns></returns>
        [HttpPost("PracticeAttempts/{attempt_id}/End")]
        [ProducesResponseType(typeof(CorrectnessCount), 200)]
        [Authorize(Roles = "Student")]

        public IActionResult EndPracticeAttempt(int attempt_id, [FromBody] PracticeAttemptResultModel report)
        {
            //Step1: Get Institute & User details
            IActionResult returnResponse = null;
            institute_id = base.InstituteId;
            int user_id = Security.GetIdFromJwtToken(UserClaim.UserId, HttpContext.User.Identity as ClaimsIdentity);

            // Update answers
            dynamic cc = _repository.EndPractice(institute_id, user_id, attempt_id, report);
            
            if(cc is CorrectnessCount)
            {
                returnResponse = Ok(ReturnResponse.GetSuccessStatus(cc));
            }

            else if (cc is int && cc == (int)Message.NotAllowedToResource)
            {
                responseMessage = _repository.GetMessageByCode(Message.NotAllowedToResource.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.NotAllowedToResource, responseMessage));
            }
            else
            {
                responseMessage = _repository.GetMessageByCode(Message.Failure.ToString());
                returnResponse = BadRequest(ReturnResponse.GetFailureStatus((int)Message.Failure, responseMessage));
            }
            return returnResponse;
        }

        /// <summary>
        /// This endpoint raise bug in a question.
        /// </summary>
        /// <param name="attempt_id"></param>
        /// <param name="bugDetails"></param>
        /// <returns></returns>
        [HttpPost("{language}/PracticeAttempts/{attempt_id}/Bug")]
        [ProducesResponseType(typeof(CorrectnessCount), 200)]
        [Authorize(Roles = "Student")]

        public IActionResult RaiseQuestionBug(int attempt_id, [FromBody] QuestionBugModel bugDetails)
        {
            //Step1: Get Institute & User details
            IActionResult returnResponse = null;
            string return_message = string.Empty;
            institute_id = base.InstituteId;
            int user_id = Security.GetIdFromJwtToken(UserClaim.UserId, HttpContext.User.Identity as ClaimsIdentity);

            // Update answers
            int bug = _repository.RaiseQuestionBug(institute_id, user_id, attempt_id, bugDetails.question_id, bugDetails.source, bugDetails.title, bugDetails.description, out return_message);

            if(bug > 0)
            {
                returnResponse = Ok(ReturnResponse.GetSuccessStatus(return_message));
            }

            else if (bug == (int)Message.NotAllowedToResource)
            {
                responseMessage = _repository.GetMessageByCode(Message.NotAllowedToResource.ToString());
                return BadRequest(ReturnResponse.GetFailureStatus((int)Message.NotAllowedToResource, responseMessage));
            }
            else
            {
                responseMessage = _repository.GetMessageByCode(Message.Failure.ToString());
                return BadRequest(ReturnResponse.GetFailureStatus((int)Message.Failure, responseMessage));                
            }

            return returnResponse;
        }



        #endregion


    }
}