using ComputerStoreContracts.BindingModels;
using ComputerStoreContracts.ViewModels;
using ComputerStoreEmployeeApp.Models;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Mvc;
using System.Data;
using System.Diagnostics;

namespace ComputerStoreEmployeeApp.Controllers
{
    public class HomeController : Controller
    {
        private readonly ILogger<HomeController> _logger;

        public HomeController(ILogger<HomeController> logger)
        {
            _logger = logger;
        }

        public IActionResult Index()
        {
            if(APIClient.Employee == null) { return Redirect("Home/Enter"); }
            return View();
        }

        
        public IActionResult ComponentMenu()
        {
            return View();
        }
      
        public IActionResult ComponentAdd()
        {
            return View();
        }

        [HttpPost]
        public IActionResult ComponentAdd(string componentname, double componentprice)
        {
            try
            {
                if (string.IsNullOrEmpty(componentname) || string.IsNullOrEmpty(componentprice.ToString()))
                {
                    throw new Exception("Enter component's name and price.");
                }

                if(!Task.Run(() => APIClient.PostRequest("api/main/insertcomponent", new ComponentBindingModel
                {
                    Name = componentname,
                    Price = componentprice
                })).Result)
                {
                    throw new InvalidOperationException("Component with such name already exists");
                }
            }
            catch (Exception ex)
            {
                ViewBag.Message = new string(ex.Message.ToString());
                return View();
            }

            return Redirect("ComponentMenu");
        }

        [HttpGet]
        public IActionResult ComponentUpdate()
        {
            ViewBag.Components = Task.Run(() => APIClient.GetRequest<List<ComponentViewModel>>("api/main/getcomponentslist")).Result;
            return View();
        }

        [HttpPost]
        public IActionResult ComponentUpdate(int component, string? componentname, double? componentprice)
        {
            try
            {
                if (string.IsNullOrEmpty(componentname) && !componentprice.HasValue)
                {
                    throw new Exception("Enter at least one field.");
                }                

                if(string.IsNullOrEmpty(componentname))
                {
                    Task.Run(() => APIClient.PatchRequest("api/main/updatecomponent", new ComponentBindingModel
                    {
                        ID = component,
                        Price = componentprice.Value
                    }));
                }

                else if (!componentprice.HasValue)
                {
                    Task.Run(() => APIClient.PatchRequest("api/main/updatecomponent", new ComponentBindingModel
                    {
                        ID = component,
                        Name = componentname
                    }));
                }
                else
                {
                    Task.Run(() => APIClient.PatchRequest("api/main/updatecomponent", new ComponentBindingModel
                    {
                        ID = component,
                        Name = componentname,
                        Price = componentprice.Value
                    }));
                }
                

            }
            catch (Exception ex)
            {
                ViewBag.Message = new string(ex.Message.ToString());
                return View();
            }

            return Redirect("ComponentMenu");
        }

        [HttpGet]
        public IActionResult ComponentDelete()
        {
            ViewBag.Components = Task.Run(() => APIClient.GetRequest<List<ComponentViewModel>>("api/main/getcomponentslist")).Result;
            return View();
        }

        [HttpPost]
        public IActionResult ComponentDelete(int component)
        {
            try
            {              
                Task.Run(() => APIClient.DeleteRequest<string>($"api/main/deletecomponent/{component}"));
            }
            catch (Exception ex)
            {
                ViewBag.Message = new string(ex.Message.ToString());
                return View();
            }

            return Redirect("ComponentMenu");
        }

        [HttpGet]
        public IActionResult ComponentCheck()
        {           
            return View(Task.Run(() => APIClient.GetRequest<List<ComponentViewModel>>("api/main/getcomponentslist")).Result);
        }

        [HttpGet]
        public IActionResult ProductMenu()
        {
            return View();
        }

        [HttpGet]
        public IActionResult ProductAdd()
        {
            return View();
        }

        [HttpPost]
        public void ProductAdd(string val)
        {

        }

        [HttpGet]
        public IActionResult ProductUpdate()
        {
            return View();
        }

        [HttpPost]
        public void ProductUpdate(string val)
        {

        }

        [HttpGet]
        public IActionResult ProductDelete()
        {
            return View();
        }

        [HttpPost]
        public void ProductDelete(string val)
        {

        }

        [HttpGet]
        public IActionResult Register()
        {
            ViewBag.ShowTopBar = false;
            return View();
        }

        [HttpPost]
        public IActionResult Register(string username, string password, string? firstname, string? middlename,string? lastname)
        {            
           try
            {
                if (string.IsNullOrEmpty(username) || string.IsNullOrEmpty(password))
                {
                    throw new Exception("Enter login and password.");
                }

                Task.Run(() => APIClient.PostRequest("api/employee/register", new EmployeeBindingModel
                {
                    Username = username,
                    Password = password,
                    FirstName = firstname != null ? firstname : null,
                    MiddleName = middlename != null ? middlename : null,
                    LastName = lastname != null ? lastname : null
                }));
            }
            catch (Exception ex)
            {
                ViewBag.Message = new string(ex.Message.ToString());
                ViewBag.ShowTopBar = false;
                return View();
            }

            return Redirect("Enter");
        }
      
        [HttpGet]
        public IActionResult Enter()
        {            
            ViewBag.ShowTopBar = false;
            return View();
        }

        
        [HttpPost]
        public IActionResult Enter(string login, string password)
        {                     
            try
            {
                if (string.IsNullOrEmpty(login) || string.IsNullOrEmpty(password)) { throw new Exception("Enter login and password"); }

                APIClient.Employee = APIClient.GetRequest<EmployeeViewModel>($"api/employee/login?login={login}&password={password}").Result;

                if (APIClient.Employee == null) { throw new Exception("Incorrect login/password"); }
            }
            catch (Exception ex)
            {
                ViewBag.Message = new string(ex.Message.ToString());
                ViewBag.ShowTopBar = false;
                return View();
            }

            return Redirect("Index");
        }

        

        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public IActionResult Error()
        {
            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
        }
    }
}