using Fitness_core_BE.Interfaces;
using Fitness_core_BE.Models;
using Microsoft.EntityFrameworkCore;

namespace Fitness_core_BE.Repos
{
    public class ChatRepository : IChatRepo
    {
        private readonly CentralDbContext _context;

        public ChatRepository(CentralDbContext context)
        {
            _context = context;
        }

        public async Task<Chat?> GetChatByIdAsync(Guid chatId)
        {
            return await _context.Chat
                .AsNoTracking()
                .FirstOrDefaultAsync(c => c.Id == chatId && c.IsAcitve);
        }

        public async Task<Chat?> GetChatBetweenUsersAsync(Guid userAId, Guid userBId)
        {
            return await _context.Chat
                .AsNoTracking()
                .FirstOrDefaultAsync(c =>
                    c.IsAcitve &&
                    (
                        (c.FKSenderId == userAId && c.FKReceiverId == userBId) ||
                        (c.FKSenderId == userBId && c.FKReceiverId == userAId)
                    ));
        }

        public async Task CreateChatAsync(Chat chat)
        {
            await _context.Chat.AddAsync(chat);
        }

        public async Task AddMessageAsync(ChatMessages message)
        {
            await _context.ChatMessages.AddAsync(message);
        }

        public async Task<List<ChatMessages>> GetMessagesAsync(
            Guid chatId,
            int skip,
            int take)
        {
            return await _context.ChatMessages
                .AsNoTracking()
                .Where(m => m.FKChatId == chatId && m.IsAcitve)
                .OrderBy(m => m.CreatedAt)
                .Skip(skip)
                .Take(take)
                .ToListAsync();
        }

        public async Task<bool> IsUserInChatAsync(Guid chatId, Guid userId)
        {
            return await _context.Chat
                .AsNoTracking()
                .AnyAsync(c =>
                    c.Id == chatId &&
                    c.IsAcitve &&
                    (c.FKSenderId == userId || c.FKReceiverId == userId));
        }
    }
}