using Microsoft.EntityFrameworkCore;
using System.Linq;
using System.Collections.Generic;
using Oqtane.Modules;
using SZUAbsolventenverein.Module.PremiumArea.Models;

namespace SZUAbsolventenverein.Module.PremiumArea.Repository
{
    public interface IEngineerApplicationRepository
    {
        IEnumerable<EngineerApplication> GetEngineerApplications(int ModuleId);
        IEnumerable<EngineerApplication> GetEngineerApplications(int ModuleId, string status);
        EngineerApplication GetEngineerApplication(int ApplicationId);
        EngineerApplication GetEngineerApplication(int ApplicationId, bool tracking);
        EngineerApplication AddEngineerApplication(EngineerApplication EngineerApplication);
        EngineerApplication UpdateEngineerApplication(EngineerApplication EngineerApplication);
        void DeleteEngineerApplication(int ApplicationId);
    }

    public class EngineerApplicationRepository : IEngineerApplicationRepository, ITransientService
    {
        private readonly IDbContextFactory<PremiumAreaContext> _factory;

        public EngineerApplicationRepository(IDbContextFactory<PremiumAreaContext> factory)
        {
            _factory = factory;
        }

        public IEnumerable<EngineerApplication> GetEngineerApplications(int ModuleId)
        {
            using var db = _factory.CreateDbContext();
            return db.EngineerApplication.Where(item => item.ModuleId == ModuleId).ToList();
        }

        public IEnumerable<EngineerApplication> GetEngineerApplications(int ModuleId, string status)
        {
            using var db = _factory.CreateDbContext();
            return db.EngineerApplication.Where(item => item.ModuleId == ModuleId && item.Status == status).ToList();
        }

        public EngineerApplication GetEngineerApplication(int ApplicationId)
        {
            return GetEngineerApplication(ApplicationId, true);
        }

        public EngineerApplication GetEngineerApplication(int ApplicationId, bool tracking)
        {
            using var db = _factory.CreateDbContext();
            if (tracking)
            {
                return db.EngineerApplication.Find(ApplicationId);
            }
            else
            {
                return db.EngineerApplication.AsNoTracking().FirstOrDefault(item => item.ApplicationId == ApplicationId);
            }
        }

        public EngineerApplication AddEngineerApplication(EngineerApplication EngineerApplication)
        {
            using var db = _factory.CreateDbContext();
            db.EngineerApplication.Add(EngineerApplication);
            db.SaveChanges();
            return EngineerApplication;
        }

        public EngineerApplication UpdateEngineerApplication(EngineerApplication EngineerApplication)
        {
            using var db = _factory.CreateDbContext();
            db.Entry(EngineerApplication).State = EntityState.Modified;
            db.SaveChanges();
            return EngineerApplication;
        }

        public void DeleteEngineerApplication(int ApplicationId)
        {
            using var db = _factory.CreateDbContext();
            EngineerApplication EngineerApplication = db.EngineerApplication.Find(ApplicationId);
            db.EngineerApplication.Remove(EngineerApplication);
            db.SaveChanges();
        }
    }
}