using Data.SeaHavenIndustries;
using Microsoft.EntityFrameworkCore;
using SeaHaven.DataServices.Interfaces;

namespace SeaHaven.DataServices.Implementation
{
    public class CommentDataService : ICommentDataService
    {
        private readonly ApplicationDbContext _context;

        public CommentDataService(ApplicationDbContext context)
        {
            _context = context;
        }

        public async Task<Comments?> GetByIdAsync(int id)
        {
            return await _context.Comments.FindAsync(id);
        }

        public async Task<IEnumerable<Comments>> GetAllAsync()
        {
            return await _context.Comments
                .Include(c => c.ApplicationUser)
                .ToListAsync();
        }

        public async Task<IEnumerable<Comments>> GetByWorkOrderIdAsync(int workOrderId)
        {
            return await _context.Comments
                .Where(c => c.WorkerOrderId == workOrderId)
                .Include(c => c.ApplicationUser)
                .OrderBy(c => c.CreatedDate)
                .ToListAsync();
        }

        public async Task<IEnumerable<Comments>> GetByDispatchIdAsync(int dispatchId)
        {
            return await _context.Comments
                .Where(c => c.DispatchId == dispatchId)
                .Include(c => c.ApplicationUser)
                .OrderBy(c => c.CreatedDate)
                .ToListAsync();
        }

        public async Task<Comments> AddAsync(Comments comment)
        {
            comment.CreatedDate = DateTime.UtcNow;
            await _context.Comments.AddAsync(comment);
            await _context.SaveChangesAsync();
            return comment;
        }

        public async Task UpdateAsync(Comments comment)
        {
            _context.Comments.Update(comment);
            await _context.SaveChangesAsync();
        }

        public async Task DeleteAsync(int id)
        {
            var entity = await GetByIdAsync(id);
            if (entity != null)
            {
                _context.Comments.Remove(entity);
                await _context.SaveChangesAsync();
            }
        }

        public async Task<bool> ExistsAsync(int id)
        {
            return await _context.Comments.AnyAsync(c => c.Id == id);
        }

        public async Task StageAsync(Comments comment, CancellationToken cancellationToken)
        {
            await _context.Comments.AddAsync(comment, cancellationToken);
        }

        public async Task<IReadOnlyList<PortalCommentData>> GetVendorViewableForDispatchAsync(int dispatchId, CancellationToken cancellationToken)
        {
            return await (from c in _context.Comments
                          where c.DispatchId == dispatchId
                              && c.CommentType != "internal"
                              && (c.IsDeleted == null || c.IsDeleted == false)
                          join u in _context.Users on c.UserId equals u.Id into users
                          from u in users.DefaultIfEmpty()
                          orderby c.CreatedDate
                          select new PortalCommentData
                          {
                              Id = c.Id,
                              Commenttext = c.Commenttext,
                              Commenter = c.Commenter,
                              CommentType = c.CommentType,
                              CreatedDate = c.CreatedDate,
                              UserId = c.UserId,
                              UserFirstName = u != null ? u.FirstName : null,
                              UserLastName = u != null ? u.LastName : null
                          }).ToListAsync(cancellationToken);
        }
    }
}