using BethanysPieShopHRM.Shared.Domain;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Forms;
using Webshop.App.Services;

namespace Webshop.App.Pages
{
    public partial class EmployeeEdit
    {
        [Inject]
        public IEmployeeDataService EmployeeDataService { get; set; } = default!;
        [Inject]
        public ICountryDataService CountryDataService { get; set; } = default!;
        [Inject]
        public IJobCategoryDataService JobCategoryDataService { get; set; } = default!;

        [Inject]
        public NavigationManager NavigationManager { get; set; } = default!;

        [Parameter]
        public int? EmployeeId { get; set; }
        public Employee? Employee { get; set; }
        public IEnumerable<Country> Countries { get; set; } = new List<Country>();
        public IEnumerable<JobCategory> JobCategories { get; set; } = new List<JobCategory>();

        protected string Message = string.Empty;
        protected string StatusClass = string.Empty;
        protected bool Saved;
        private IBrowserFile selectedFile;
        private async Task<Employee?> GetEmployee(int employeeId)
        {
            return await EmployeeDataService.GetEmployeeDetails(employeeId);
        }
        private void OnInputFileChange(InputFileChangeEventArgs e)
        {
            selectedFile = e.File;
            StateHasChanged();
        }
        protected async override Task OnInitializedAsync()
        {
            Countries = await CountryDataService.GetCountries();
            JobCategories = await JobCategoryDataService.GetJobCategories();
            Saved = false;
        }
        protected async override Task OnParametersSetAsync()
        {
            if (!EmployeeId.HasValue)
            {
                Employee = new Employee();
                return;
            }

            var employee = await GetEmployee(EmployeeId.Value);

            if (employee is null)
            {
                NavigationManager.NavigateTo("/not-found");
                return;
            }

            Employee = employee;
        }

        protected async Task HandleValidSubmit()
        {
            Saved = false;

            if (!EmployeeId.HasValue && Employee != null)
            {
                if (selectedFile != null)
                {
                    var file = selectedFile;
                    Stream stream = file.OpenReadStream();
                    MemoryStream ms = new();
                    await stream.CopyToAsync(ms);
                    stream.Close();
                    Employee.ImageName = file.Name;
                    Employee.ImageContent = ms.ToArray();
                }
                var addedEmployee = await EmployeeDataService.AddEmployee(Employee);
                if (addedEmployee != null)
                {
                    StatusClass = "alert-success";
                    Message = "New employee added successfully.";
                    Saved = true;
                }
                else
                {
                    StatusClass = "alert-danger";
                    Message = "Something went wrong adding the new employee. Please try again.";
                    Saved = false;
                }
            }
            else if (Employee != null)
            {
                await EmployeeDataService.UpdateEmployee(Employee);
                StatusClass = "alert-success";
                Message = "Employee updated successfully.";
                Saved = true;
            }
        }

        protected async Task HandleInvalidSubmit()
        {
            StatusClass = "alert-danger";
            Message = "validation errors";

        }

        protected async Task DeleteEmployee()
        {
            if(Employee != null && Employee.EmployeeId > 0)
            {
                await EmployeeDataService.DeleteEmployee(Employee.EmployeeId);
                StatusClass = "alert-success";
                Message = "Deleted successful";
            }
        }
        protected void BackToOverview()
        {
            NavigationManager.NavigateTo("/employeeoverview");
        }
    }
}