namespace Diligent.WebAPI.Business.Services
{
    public class CommentService : ICommentService
    {
        private readonly FrontEndSettings _frontEndSettings;
        private readonly DatabaseContext _context;
        private readonly IMapper _mapper;
        private readonly ILogger<CommentService> _logger;
        private readonly IEmailer _emailer;

        public CommentService(IOptions<FrontEndSettings> frontEndSettings,DatabaseContext context, IMapper mapper, ILogger<CommentService> logger,IEmailer emailer)
        {
            _frontEndSettings = frontEndSettings.Value;
            _context = context;
            _mapper = mapper;
            _logger = logger;
            _emailer = emailer;
        }
        public async Task CreateComment(CommentCreateDto commentCreateDto)
        {
            _logger.LogInformation("Start creating comment");
            var comment = _mapper.Map<Comment>(commentCreateDto);

            if(commentCreateDto.UsersToNotify.Count > 0)
            {
                _logger.LogInformation("Start sending emails");
                await _emailer.SendEmailAsync(commentCreateDto.UsersToNotify, "You're tagged in comment by another user",
                    HTMLHelper.RenderTagPage($"{_frontEndSettings.BaseUrl}/candidates/{commentCreateDto.ApplicantId}"), isHtml: true);
                _logger.LogInformation("Emails send successfully");
            }

            comment.DateOfSending = DateTime.Now;
            _logger.LogInformation($"Comment created successfully in {comment.DateOfSending}");

            _logger.LogInformation($"Saving comment in Db");
            await _context.Comments.AddAsync(comment);
            var result = _context.SaveChangesAsync();
            _logger.LogInformation($"Comment saved in Db");
            await result;
        }
    }
}