PIbd-23_Abazov_A.A._ConstructionCompany/ConstructionCompany/ConstructionCompanyPsqlImplement/Models/Material.cs

using ConstructionCompanyContracts.BindingModels;
using ConstructionCompanyContracts.ViewModels;
using ConstructionCompanyDataModels.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConstructionCompanyPsqlImplement.Models
{
    public class Material : IMaterialModel
    {
        public string MaterialName {get; private set;} = string.Empty;

        public int Quantity { get; set; }

        public int Id { get; private set; }

        public static Material? Create(MaterialBindingModel? model)
        {
            if (model == null)
            {
                return null;
            }
            return new Material()
            {
                Id = model.Id,
                MaterialName = model.MaterialName,
                Quantity = model.Quantity
            };
        }
        public static string CreateCommand(MaterialBindingModel? model)
        {
            if (model == null)
            {
                return "";
            }
            return $"INSERT INTO material(name, quantity) VALUES(\'{model.MaterialName}\', {model.Quantity});";
        }
        public static string UpdateCommand(MaterialBindingModel? model)
        {
            if (model == null)
            {
                return "";
            }
            return $"UPDATE material SET \"name\" = \'{model.MaterialName}\', quantity = {model.Quantity} WHERE id = {model.Id}";
        }
        public static string DeleteCommand(MaterialBindingModel? model)
        {
            if (model == null)
            {
                return "";
            }
            return $"DELETE FROM material WHERE id = {model.Id}";
        }

        public static string GetEmployeeCommand(MaterialBindingModel? model)
        {
            if (model == null)
            {
                return "";
            }
            return $"SELECT e.id FROM employee e JOIN employee_order ON employee_order.employee_id = e.id JOIN \"order\" ON \"order\".id = employee_order.order_id JOIN material_order ON material_order.order_id = \"order\".id JOIN material mat ON mat.id = material_order.material_id WHERE mat.id = {model.Id};";
        }
        public void Update(MaterialBindingModel? model)
        {
            if (model == null)
            {
                return;
            }
            MaterialName = model.MaterialName;
            Quantity = model.Quantity;
        }
        public MaterialViewModel GetViewModel => new()
        {
            Id = Id,
            MaterialName = MaterialName,
            Quantity = Quantity
        };
    }
}