@using Indotalent.ConfigBackEnd.Extensions
@using Indotalent.Features.Utilities.ProgramResource
@using Indotalent.Features.Utilities.ProgramResource.Cqrs
@using Microsoft.AspNetCore.Components.Web
@using Microsoft.JSInterop
@using MudBlazor
@using Features.Root.Shared
@using ClosedXML.Excel
@using System.IO
@inject ProgramResourceService ProgramResourceService
@inject IDialogService DialogService
@inject ISnackbar Snackbar
@inject IJSRuntime JSRuntime

<MudPaper Elevation="0" Square="true" Class="pa-6 mb-3 d-flex align-center justify-space-between" Style="border: 1px solid #E5E7EB; border-radius: 12px;">
    <div>
        <MudText Typo="Typo.h5" Style="font-weight: 700; color: #111827;">Program Resource</MudText>
        <MudText Typo="Typo.body2" Style="color: #9CA3AF;">Manage master resources for program management.</MudText>
    </div>
    <div class="d-flex align-center gap-2">
        <MudIcon Icon="@Icons.Material.Filled.Home" Size="Size.Small" Color="Color.Default" />
        <MudText Typo="Typo.caption" Style="color: #94a3b8;">/</MudText>
        <MudText Typo="Typo.caption" Style="color: #94a3b8;">Utilities</MudText>
        <MudText Typo="Typo.caption" Style="color: #94a3b8;">/</MudText>
        <MudText Typo="Typo.caption" Style="font-weight: 600; color: #111827;">ProgramResource</MudText>
    </div>
</MudPaper>

<MudPaper Elevation="0" Outlined="true" Style="border-radius: 12px; overflow: hidden; background-color: #ffffff; border: 1px solid #E5E7EB;">

    <div style="padding: 20px 24px; border-bottom: 1px solid #E5E7EB; display: flex; justify-content: space-between; align-items: center; background-color: #ffffff; min-height: 80px;">
        
        <div style="display: flex; align-items: center; gap: 8px;">
            <MudTextField @bind-Value="_searchString"
                          Placeholder="Search..."
                          Adornment="Adornment.Start"
                          AdornmentIcon="@Icons.Material.Filled.Search"
                          IconSize="Size.Small"
                          Variant="Variant.Outlined"
                          Margin="Margin.Dense"
                          Style="background-color: white; width: 280px; border-radius: 8px;"
                          OnKeyDown="@HandleSearchKeyDown" />
            
            <MudButton Variant="Variant.Filled"
                       Color="Color.Primary"
                       OnClick="OnSearchClick"
                       Size="Size.Small"
                       Style="text-transform: none; font-weight: 500; border-radius: 6px; height: 34px; background: #3B82F6; color: white; box-shadow: none;">
                Search
            </MudButton>
        </div>

        <div style="display: flex; gap: 8px; align-items: center;">
            <MudButton Variant="Variant.Outlined"
                       Color="Color.Success"
                       OnClick="ExportToExcel"
                       Size="Size.Small"
                       Disabled="_isExporting"
                       StartIcon="@(_isExporting ? null : Icons.Custom.FileFormats.FileExcel)"
                       Style="border: 1px solid #D1D5DB; background:white; font-weight: 500; border-radius: 6px; text-transform: none; height: 34px;">
                @if (_isExporting)
                {
                    <MudProgressCircular Class="ms-n1" Size="Size.Small" Indeterminate="true" />
                    <MudText Class="ms-2" Typo="Typo.button" Style="text-transform: none !important;">Processing...</MudText>
                }
                else
                {
                    <MudText Typo="Typo.button" Style="text-transform: none !important;">Excel</MudText>
                }
            </MudButton>

            <MudButton Variant="Variant.Outlined"
                       Color="Color.Primary"
                       OnClick="LoadData"
                       Size="Size.Small"
                       StartIcon="@(_isRefreshing ? null : Icons.Material.Filled.Refresh)"
                       Disabled="_isRefreshing"
                       Style="border: 1px solid #D1D5DB; background:white; font-weight: 500; border-radius: 6px; text-transform: none; height: 34px;">
                @if (_isRefreshing)
                {
                    <MudProgressCircular Class="ms-n1" Size="Size.Small" Indeterminate="true" />
                    <MudText Class="ms-2" Typo="Typo.button" Style="text-transform: none !important;">Refreshing...</MudText>
                }
                else
                {
                    <MudText Typo="Typo.button" Style="text-transform: none !important;">Refresh</MudText>
                }
            </MudButton>

            @if (_selectedItem != null)
            {
                <MudButton Variant="Variant.Outlined" Color="Color.Info" StartIcon="@Icons.Material.Filled.Visibility" OnClick="InvokeView" Size="Size.Small" Style="border: 1px solid #D1D5DB; text-transform: none; font-weight: 500; border-radius: 6px; background-color: white; height: 34px;">View</MudButton>
                <MudButton Variant="Variant.Outlined" Color="Color.Primary" StartIcon="@Icons.Material.Filled.Edit" OnClick="InvokeEdit" Size="Size.Small" Style="border: 1px solid #D1D5DB; text-transform: none; font-weight: 500; border-radius: 6px; background-color: white; height: 34px;">Edit</MudButton>
                <MudButton Variant="Variant.Filled" Color="Color.Error" StartIcon="@Icons.Material.Filled.Delete" OnClick="OnDelete" Size="Size.Small" Style="text-transform: none; font-weight: 500; border-radius: 6px; height: 34px; background: white; border: 1px solid #FCA5A5; color: #EF4444;">Remove</MudButton>
                <MudIconButton Icon="@Icons.Material.Filled.Close" Size="Size.Small" OnClick="() => _selectedItem = null" />
            }
            else
            {
                <MudButton Variant="Variant.Filled" Color="Color.Primary" StartIcon="@Icons.Material.Filled.Add" OnClick="() => OnAdd.InvokeAsync()" Size="Size.Small" Style="text-transform: none; font-weight: 500; border-radius: 6px; height: 34px; background: #3B82F6; color: white;">
                    Add New Resource
                </MudButton>
            }
        </div>
    </div>

    <MudTable Items="@GetPagedData()" Hover="true" Elevation="0" Striped="true" Class="mud-table-styled" CustomHeader="true" Dense="true" T="GetProgramResourceListResponse" OnRowClick="@((args) => _selectedItem = args.Item)" Loading="@_isRefreshing">
        <HeaderContent>
            <MudTh Style="width: 50px; background-color: #F9FAFB; border-bottom: 1px solid #E5E7EB;"></MudTh>
            <MudTh Style="font-weight: 600; color: #6B7280; text-transform: uppercase; font-size: 0.6875rem; letter-spacing: 0.05em; background-color: #F9FAFB; border-bottom: 1px solid #E5E7EB; white-space: nowrap;">
                <MudTableSortLabel SortBy="new Func<GetProgramResourceListResponse, object>(x => x.Name!)">Resource Name</MudTableSortLabel>
            </MudTh>
            <MudTh Style="font-weight: 600; color: #6B7280; text-transform: uppercase; font-size: 0.6875rem; letter-spacing: 0.05em; background-color: #F9FAFB; border-bottom: 1px solid #E5E7EB; white-space: nowrap;">Description</MudTh>
        </HeaderContent>
        <RowTemplate>
            <MudTd>
                <MudCheckBox T="bool" Value="@(_selectedItem?.Id == context.Id)" Color="Color.Primary" Dense="true" Size="Size.Small" ReadOnly="true" />
            </MudTd>
            <MudTd>
                <MudText Typo="Typo.body2" Style="font-weight: 600; color: #374151;">@context.Name</MudText>
            </MudTd>
            <MudTd>@context.Description</MudTd>
        </RowTemplate>
    </MudTable>

    <div style="display: flex; justify-content: space-between; align-items: center; padding: 12px 24px; background-color: #F9FAFB; border-top: 1px solid #E5E7EB;">
        <div style="display: flex; align-items: center; gap: 12px;">
            <MudText Typo="Typo.caption" Style="font-weight: 500; color: #9CA3AF; font-size: 0.75rem;">Rows per page:</MudText>
            <MudSelect T="int" Value="@_top" ValueChanged="OnPageSizeChanged" Dense="true" Margin="Margin.Dense" Style="width: 80px; background-color: white; font-size: 12px; font-weight: 600;" Variant="Variant.Outlined" Class="mt-0 rounded-0">
                <MudSelectItem Value="5" />
                <MudSelectItem Value="10" />
                <MudSelectItem Value="50" />
                <MudSelectItem Value="500" />
                <MudSelectItem Value="1000" />
            </MudSelect>
            <MudText Typo="Typo.caption" Style="color: #9CA3AF; font-size: 0.75rem; font-weight: 500; margin-left: 12px;">
                Showing @(GetFilteredData().Count() == 0 ? 0 : _skip + 1)-@Math.Min(_skip + _top, GetFilteredData().Count()) of @GetFilteredData().Count()
            </MudText>
        </div>
        <div style="display: flex; gap: 8px; align-items: center;">
            <MudIconButton Icon="@Icons.Material.Filled.FirstPage" Size="Size.Small" OnClick="@(() => OnPageChanged(1))" Disabled="@(_currentPage == 1)" Class="rounded-0" />
            <MudButton OnClick="@(() => OnPageChanged(_currentPage - 1))" Disabled="@(_currentPage == 1)" Variant="Variant.Text" StartIcon="@Icons.Material.Filled.ChevronLeft" Size="Size.Small">Prev</MudButton>
            @{
                var totalPages = _totalPage == 0 ? 1 : _totalPage;
                var maxVisible = 5;
                var startPage = Math.Max(1, _currentPage - maxVisible / 2);
                var endPage = Math.Min(totalPages, startPage + maxVisible - 1);
                if (endPage - startPage < maxVisible - 1) { startPage = Math.Max(1, endPage - maxVisible + 1); }
            }
            @for (int i = startPage; i <= endPage; i++)
            {
                var pageNum = i;
                var isActive = pageNum == _currentPage;
                <MudButton OnClick="@(() => OnPageChanged(pageNum))"
                           Variant="Variant.Text" Size="Size.Small"
                           Style="@(isActive ? "min-width: 34px; padding: 4px 8px; font-size: 0.75rem; font-weight: 600; background: #3B82F6; color: white; border: 1px solid #3B82F6; border-radius: 6px; text-transform: none;" : "min-width: 34px; padding: 4px 8px; font-size: 0.75rem; font-weight: 500; color: #374151; background: white; border: 1px solid #D1D5DB; border-radius: 6px; text-transform: none;")">@pageNum</MudButton>
            }
            <MudButton OnClick="@(() => OnPageChanged(_currentPage + 1))" Disabled="@(_currentPage == _totalPage || _totalPage == 0)" Variant="Variant.Text" EndIcon="@Icons.Material.Filled.ChevronRight" Size="Size.Small">Next</MudButton>
            <MudIconButton Icon="@Icons.Material.Filled.LastPage" Size="Size.Small" OnClick="@(() => OnPageChanged(_totalPage))" Disabled="@(_currentPage == _totalPage || _totalPage == 0)" Class="rounded-0" />
        </div>
    </div>
</MudPaper>


<style>
    .mud-table-styled .mud-table-row:hover { background-color: #F9FAFB !important; }
</style>

@code {
    [Parameter] public EventCallback OnAdd { get; set; }
    [Parameter] public EventCallback<UpdateProgramResourceRequest> OnEdit { get; set; }
    [Parameter] public EventCallback<UpdateProgramResourceRequest> OnView { get; set; }

    private List<GetProgramResourceListResponse> _items = new();
    private GetProgramResourceListResponse? _selectedItem;
    private string _searchString = "";
    private bool _isRefreshing = false;
    private bool _isExporting = false;

    private int _skip = 0;
    private int _top = 5;
    private int _totalPage => GetFilteredData().Count() == 0 ? 0 : (int)Math.Ceiling((double)GetFilteredData().Count() / (_top == 0 ? 1 : _top));
    private int _currentPage => (_top >= GetFilteredData().Count() || _top == 0) ? 1 : (_skip / _top) + 1;

    protected override async Task OnInitializedAsync() => await LoadData();

    private async Task LoadData()
    {
        _isRefreshing = true;
        _selectedItem = null;
        StateHasChanged();
        try
        {
            var response = await ProgramResourceService.GetProgramResourceListAsync();
            await Task.Delay(500);
            if (response != null && response.IsSuccess)
            {
                _items = response.Value ?? new();
            }
        }
        finally
        {
            _isRefreshing = false;
            StateHasChanged();
        }
    }

    private IEnumerable<GetProgramResourceListResponse> GetFilteredData()
    {
        if (string.IsNullOrWhiteSpace(_searchString)) return _items;
        return _items.Where(x => (x.Name?.Contains(_searchString, StringComparison.OrdinalIgnoreCase) ?? false));
    }

    private IEnumerable<GetProgramResourceListResponse> GetPagedData() => GetFilteredData().Skip(_skip).Take(_top);

    private void OnSearchClick() { _skip = 0; _selectedItem = null; StateHasChanged(); }
    private void HandleSearchKeyDown(KeyboardEventArgs e) { if (e.Key == "Enter") OnSearchClick(); }

    private async Task ExportToExcel()
    {
        _isExporting = true;
        try
        {
            await Task.Delay(500);
            using (var workbook = new XLWorkbook())
            {
                var worksheet = workbook.Worksheets.Add("Resources");
                worksheet.Cell(1, 1).Value = "Resource Name";
                worksheet.Cell(1, 2).Value = "Description";
                var currentRow = 1;
                foreach (var item in GetFilteredData())
                {
                    currentRow++;
                    worksheet.Cell(currentRow, 1).Value = item.Name;
                    worksheet.Cell(currentRow, 2).Value = item.Description;
                }
                using (var stream = new MemoryStream())
                {
                    workbook.SaveAs(stream);
                    var content = Convert.ToBase64String(stream.ToArray());
                    await JSRuntime.InvokeVoidAsync("downloadFile", "ProgramResource_List.xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", content);
                    Snackbar.Add("Exported successfully", Severity.Success);
                }
            }
        }
        finally { _isExporting = false; }
    }

    private void OnPageChanged(int page) { _skip = (page - 1) * _top; _selectedItem = null; }
    private void OnPageSizeChanged(int size) { _top = size; _skip = 0; }

    private async Task InvokeEdit()
    {
        if (_selectedItem == null) return;
        var response = await ProgramResourceService.GetProgramResourceByIdAsync(_selectedItem.Id!);
        if (response != null && response.IsSuccess)
        {
            await OnEdit.InvokeAsync(new UpdateProgramResourceRequest { Id = response.Value!.Id, Name = response.Value.Name, Description = response.Value.Description });
        }
    }

    private async Task InvokeView()
    {
        if (_selectedItem == null) return;
        var response = await ProgramResourceService.GetProgramResourceByIdAsync(_selectedItem.Id!);
        if (response != null && response.IsSuccess)
        {
            await OnView.InvokeAsync(new UpdateProgramResourceRequest { Id = response.Value!.Id, Name = response.Value.Name, Description = response.Value.Description });
        }
    }

    private async Task OnDelete()
    {
        if (_selectedItem == null) return;
        var parameters = new DialogParameters<_DeleteConfirmation> { { x => x.ContentText, _selectedItem.Name } };
        var dialog = await DialogService.ShowAsync<_DeleteConfirmation>("", parameters, new DialogOptions { MaxWidth = MaxWidth.ExtraSmall, FullWidth = true });
        var result = await dialog.Result;
        if (result != null && !result.Canceled)
        {
            if (await ProgramResourceService.DeleteProgramResourceAsync(_selectedItem.Id!))
            {
                await LoadData();
                Snackbar.Add("Deleted successfully", Severity.Success);
            }
        }
    }
}