using AutoMapper;
using DamageAssesment.Api.Employees.Db;
using DamageAssesment.Api.Employees.Interfaces;
using DamageAssesment.Api.Employees.Models;
using Microsoft.EntityFrameworkCore;
using System.Xml.Linq;

namespace DamageAssesment.Api.Employees.Providers
{
    public class EmployeesProvider : IEmployeesProvider
    {

        private EmployeeDbContext EmployeeDbContext;
        private ILogger<EmployeesProvider> logger;
        private IMapper mapper;

        public EmployeesProvider(EmployeeDbContext EmployeeDbContext, ILogger<EmployeesProvider> logger, IMapper mapper)
        {
            this.EmployeeDbContext = EmployeeDbContext;
            this.logger = logger;
            this.mapper = mapper;
            SeedData();
        }

        public async Task<(bool IsSuccess, IEnumerable<Models.Employee> Employees, string ErrorMessage)> GetEmployeesAsync()
        {

            try
            {
                logger?.LogInformation("Query Question");
                var Employee = await EmployeeDbContext.Employees.AsNoTracking().ToListAsync();
                if (Employee != null)
                {
                    logger?.LogInformation($"{Employee.Count} Employees(s) found");
                    var result = mapper.Map<IEnumerable<Db.Employee>, IEnumerable<Models.Employee>>(Employee);
                    return (true, result, null);
                }
                return (false, null, "Not found");
            }
            catch (Exception ex)
            {
                logger?.LogError(ex.ToString());
                return (false, null, ex.Message);
            }

        }

        public async Task<(bool IsSuccess, Models.Employee Employee, string ErrorMessage)> GetEmployeeByIdAsync(string Id)
        {
            try
            {
                logger?.LogInformation("Query Employee");
                var Employee = await EmployeeDbContext.Employees.AsNoTracking().FirstOrDefaultAsync(q => q.Id.ToLower() == Id.ToLower());
                if (Employee != null)
                {
                    logger?.LogInformation($"{Employee} customer(s) found");
                    var result = mapper.Map<Db.Employee, Models.Employee>(Employee);
                    return (true, result, null);
                }
                return (false, null, "Not found");
            }
            catch (Exception ex)
            {
                logger?.LogError(ex.ToString());
                return (false, null, ex.Message);
            }
        }
        public async Task<(bool IsSuccess, Models.Employee Employee, string ErrorMessage)> PostEmployeeAsync(Db.Employee Employee)
        {
            try
            {
                logger?.LogInformation("Query Employee");
                if (!EmployeeExists(Employee.Id))
                {
                    EmployeeDbContext.Employees.Add(Employee);
                    EmployeeDbContext.SaveChanges();
                    var result = mapper.Map<Db.Employee, Models.Employee>(Employee);
                    return (true, result, null);
                }
                return (false, null, "Employee is already exits");
            }
            catch (Exception ex)
            {
                logger?.LogError(ex.ToString());
                return (false, null, ex.Message);
            }
        }
        public async Task<(bool IsSuccess, Models.Employee Employee, string ErrorMessage)> UpdateEmployeeAsync(Db.Employee Employee)
        {
            try
            {
                if (Employee != null)
                {
                    var _employee = await EmployeeDbContext.Employees.AsNoTracking().Where(s => s.Id.ToLower() == Employee.Id.ToLower()).FirstOrDefaultAsync();

                    if (_employee != null)
                    {
                        EmployeeDbContext.Employees.Update(Employee);
                        EmployeeDbContext.SaveChanges();
                        return (true, mapper.Map<Db.Employee, Models.Employee>(Employee), "Successful");
                    }
                    else
                    {
                        logger?.LogInformation($"{Employee} Not found");
                        return (false, null, "Not Found");
                    }

                }
                else
                {
                    logger?.LogInformation($"{Employee} Bad Request");
                    return (false, null, "Bad request");
                }
            }
            catch (Exception ex)
            {
                logger?.LogError(ex.ToString());
                return (false, null, ex.Message);
            }
        }
        public async Task<(bool IsSuccess, Models.Employee Employee, string ErrorMessage)> DeleteEmployeeAsync(string Id)
        {
            try
            {
                Db.Employee Employee = EmployeeDbContext.Employees.AsNoTracking().Where(a => a.Id.ToLower() == Id.ToLower()).FirstOrDefault();
                if (Employee == null)
                {
                    return (false, null, "Not Found");
                }
                EmployeeDbContext.Employees.Remove(Employee);
                EmployeeDbContext.SaveChanges();
                return (true, mapper.Map<Db.Employee, Models.Employee>(Employee), $"EmployeeId {Id} deleted Successfuly");
            }
            catch (Exception ex)
            {

                logger?.LogError(ex.ToString());
                return (false,null, ex.Message);
            }
        }
        private bool EmployeeExists(string id)
        {
            return EmployeeDbContext.Employees.AsNoTracking().Count(e => e.Id.ToLower() == id.ToLower()) > 0;
        }

        private void SeedData()
        {
            if (!EmployeeDbContext.Employees.Any())
            {
                EmployeeDbContext.Employees.Add(new Db.Employee() { Id = "Emp1", Name = "ABC1", Email = "abc1@gmail.com", OfficePhoneNumber = "12345678",BirthDate=DateTime.Now.AddYears(-18), IsActive = true,PreferredLanguage="en" });
                EmployeeDbContext.Employees.Add(new Db.Employee() { Id = "Emp2", Name = "ABC2", Email = "abc2@gmail.com", OfficePhoneNumber = "12345678", BirthDate = DateTime.Now.AddYears(-22), IsActive = true, PreferredLanguage = "fr" });
                EmployeeDbContext.Employees.Add(new Db.Employee() { Id = "Emp3", Name = "ABC3", Email = "abc3@gmail.com", OfficePhoneNumber = "12345678", BirthDate = DateTime.Now.AddYears(-30) ,IsActive = true, PreferredLanguage = "fr" });
                EmployeeDbContext.Employees.Add(new Db.Employee() { Id = "Emp4", Name = "ABC4", Email = "abc4@gmail.com", OfficePhoneNumber = "12345678", BirthDate = DateTime.Now.AddYears(-20) ,IsActive = true, PreferredLanguage = "en" });
                EmployeeDbContext.Employees.Add(new Db.Employee() { Id = "Emp5", Name = "ABC5", Email = "abc5@gmail.com", OfficePhoneNumber = "12345678", BirthDate = DateTime.Now.AddYears(-23) ,IsActive = true, PreferredLanguage = "sp" });
                EmployeeDbContext.Employees.Add(new Db.Employee() { Id = "Emp6", Name = "ABC6", Email = "abc6@gmail.com", OfficePhoneNumber = "12345678", BirthDate = DateTime.Now.AddYears(-32) ,IsActive = true, PreferredLanguage = "sp" });
                EmployeeDbContext.SaveChanges();
            }

        }



    }
}