using Chatbot.Api.Domain.Data.DbContexts;
using Chatbot.Api.Domain.Entities;
using Chatbot.Api.Domain.Repositories;
using Microsoft.EntityFrameworkCore;
using System;
using System.Threading.Tasks;

namespace Chatbot.Api.Domain.Data.Repositories
{
    class BotRepository : IBotRepository
    {
        private readonly BotDbContext _dbContext;

        public BotRepository(BotDbContext dbContext)
        {
            _dbContext = dbContext;
        }

        public async Task<Bot[]> GetBots()
        {
            return await _dbContext.Bots.ToArrayAsync();
        }

        public async Task<Guid> GetBotId(string botName)
        {
            var bot = await _dbContext.Bots.FirstOrDefaultAsync(z => z.BotName == botName);
            if (bot != null)
                return bot.BotId;
            else
                return await CreateBot(botName);
        }

        private async Task<Guid> CreateBot(string botName)
        {
            var id = Guid.NewGuid();
            _dbContext.Add(new Bot()
            {
                BotId = id,
                BotCode = botName.ToUpper(),
                BotName = botName,
                CreationDate = DateTime.Now
            });
            await _dbContext.SaveChangesAsync();

            return id;
        }
    }
}