using SurveyBackend.Core.Contexts;
using SurveyBackend.Services.Exceptions;
using SurveyLib.Core.Models;
using SurveyLib.Core.Repositories;
using SurveyLib.Core.Services;

namespace SurveyBackend.Services.Services;

public class QuestionService : IQuestionService
{
    private readonly IQuestionRepository _questionRepository;
    private readonly ISurveyRepository _surveyRepository;
    private readonly IUserContext _userContext;

    public QuestionService(IQuestionRepository questionRepository, ISurveyRepository surveyRepository,
        IUserContext userContext)
    {
        _questionRepository = questionRepository;
        _surveyRepository = surveyRepository;
        _userContext = userContext;
    }

    public async Task AddQuestionAsync(QuestionBase question)
    {
        // TODO: проверить существование опроса
        await _questionRepository.AddAsync(question);
    }

    public async Task UpdateQuestionAsync(QuestionBase question)
    {
        var questionBase = await _questionRepository.GetByIdAsNoTrackingAsync(question.Id);
        if (questionBase is null)
        {
            throw new NotFoundException("Question not found");
        }

        question.SurveyId = questionBase.SurveyId;

        await _questionRepository.UpdateAsync(question);
    }

    public async Task DeleteQuestionAsync(int id)
    {
        var question = await _questionRepository.GetByIdAsync(id);
        if (question is null)
        {
            throw new NotFoundException("Question not found");
        }

        await _questionRepository.DeleteAsync(id);
    }

    public async Task<QuestionBase> GetQuestionByIdAsync(int id)
    {
        var question = await _questionRepository.GetByIdAsync(id);
        if (question is null)
        {
            throw new NotFoundException("Question not found");
        }

        return question;
    }

    public async Task<IEnumerable<QuestionBase>> GetQuestionsBySurveyIdAsync(int surveyId)
    {
        var survey = await _surveyRepository.GetByIdAsync(surveyId);
        if (survey is null)
        {
            throw new NotFoundException("Survey not found");
        }

        return await _questionRepository.GetQuestionsBySurveyId(surveyId);
    }
}