@using Indotalent.ConfigBackEnd.Extensions
@using Indotalent.Features.Pipeline.Lead
@using Indotalent.Features.Pipeline.Lead.Cqrs
@using Microsoft.AspNetCore.Components.Web
@using Microsoft.JSInterop
@using MudBlazor
@using Features.Root.Shared
@using ClosedXML.Excel
@using System.IO
@inject LeadService LeadService
@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;">Lead Management</MudText>
        <MudText Typo="Typo.body2" Style="color: #9CA3AF;">Manage business opportunities and sales pipeline.</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: #9CA3AF;">/</MudText>
        <MudText Typo="Typo.caption" Style="color: #9CA3AF;">Pipeline</MudText>
        <MudText Typo="Typo.caption" Style="color: #9CA3AF;">/</MudText>
        <MudText Typo="Typo.caption" Style="font-weight: 600; color: #111827;">Lead</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" Class="mt-0" 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; 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="background: white; font-weight: 500; border-radius: 6px; text-transform: none; height: 34px; border: 1px solid #D1D5DB;">
                @if (_isExporting)
                {
                    <MudProgressCircular Class="ms-n1" Size="Size.Small" Indeterminate="true" />
                }
                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="background: white; font-weight: 500; border-radius: 6px; text-transform: none; height: 34px; border: 1px solid #D1D5DB;">
                @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 (_selectedLead != null)
            {
                <MudButton Variant="Variant.Outlined" Color="Color.Info" StartIcon="@Icons.Material.Filled.Visibility" OnClick="InvokeView" Size="Size.Small" Style="text-transform: none; font-weight: 500; border-radius: 6px; background: white; border: 1px solid #D1D5DB;">View</MudButton>
                <MudButton Variant="Variant.Outlined" Color="Color.Primary" StartIcon="@Icons.Material.Filled.Edit" OnClick="InvokeEdit" Size="Size.Small" Style="text-transform: none; font-weight: 500; border-radius: 6px; background: white; border: 1px solid #D1D5DB;">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; background: white; border: 1px solid #FCA5A5; color: #EF4444;">Remove</MudButton>
                <MudIconButton Icon="@Icons.Material.Filled.Close" Size="Size.Small" OnClick="() => _selectedLead = 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;">Add New Lead</MudButton>
            }
        </div>
    </div>

    <MudTable Striped="true" Class="mud-table-styled" Items="@GetPagedData()" Hover="true" Elevation="0" CustomHeader="true" Dense="true" T="GetLeadListResponse" OnRowClick="@((args) => _selectedLead = args.Item)" Loading="@_isRefreshing">
        <HeaderContent>
            <MudTh Style="width: 50px; background-color: #F9FAFB; border-bottom: 1px solid #E5E7EB;"></MudTh>
            <MudTh Style="background-color: #F9FAFB; border-bottom: 1px solid #E5E7EB;">
                <MudTableSortLabel SortBy="new Func<GetLeadListResponse, object>(x => x.AutoNumber!)" Style="font-weight: 700; color: #111827;">Number</MudTableSortLabel>
            </MudTh>
            <MudTh Style="background-color: #F9FAFB; border-bottom: 1px solid #E5E7EB;">
                <MudTableSortLabel SortBy="new Func<GetLeadListResponse, object>(x => x.Title!)" Style="font-weight: 700; color: #111827;">Title</MudTableSortLabel>
            </MudTh>
            <MudTh Style="background-color: #F9FAFB; border-bottom: 1px solid #E5E7EB;">
                <MudTableSortLabel SortBy="new Func<GetLeadListResponse, object>(x => x.CompanyName!)" Style="font-weight: 600; color: #6B7280; text-transform: uppercase; font-size: 0.6875rem; letter-spacing: 0.05em;">Company</MudTableSortLabel>
            </MudTh>
            <MudTh Style="background-color: #F9FAFB; border-bottom: 1px solid #E5E7EB;">
                <MudTableSortLabel SortBy="new Func<GetLeadListResponse, object>(x => x.PipelineStage)" Style="font-weight: 600; color: #6B7280; text-transform: uppercase; font-size: 0.6875rem; letter-spacing: 0.05em;">Stage</MudTableSortLabel>
            </MudTh>
            <MudTh Style="background-color: #F9FAFB; border-bottom: 1px solid #E5E7EB;">
                <MudTableSortLabel SortBy="new Func<GetLeadListResponse, object>(x => x.ClosingStatus)" Style="font-weight: 600; color: #6B7280; text-transform: uppercase; font-size: 0.6875rem; letter-spacing: 0.05em;">Closing Status</MudTableSortLabel>
            </MudTh>
        </HeaderContent>
        <RowTemplate>
            <MudTd><MudCheckBox T="bool" Value="@(_selectedLead?.Id == context.Id)" Color="Color.Primary" Dense="true" Size="Size.Small" ReadOnly="true" /></MudTd>
            <MudTd Style="padding-top: 0.75rem; padding-bottom: 0.75rem; color: #6B7280; font-size: 0.875rem;">@context.AutoNumber</MudTd>
            <MudTd Style="font-weight: 600; color: #374151;">@context.Title</MudTd>
            <MudTd Style="padding-top: 0.75rem; padding-bottom: 0.75rem; color: #6B7280; font-size: 0.875rem;">@context.CompanyName</MudTd>
            <MudTd Style="padding-top: 0.75rem; padding-bottom: 0.75rem; color: #6B7280; font-size: 0.875rem;"><MudChip T="string" Size="Size.Small" Color="Color.Primary" Variant="Variant.Text" Style="border-radius:0px; font-weight:700;">@context.PipelineStage</MudChip></MudTd>
            <MudTd Style="padding-top: 0.75rem; padding-bottom: 0.75rem; color: #6B7280; font-size: 0.875rem;"><MudChip T="string" Size="Size.Small" Color="Color.Info" Variant="Variant.Text" Style="border-radius:0px; font-weight:700;">@context.ClosingStatus</MudChip></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 custom-select-dense" AnchorOrigin="Origin.BottomCenter" TransformOrigin="Origin.TopCenter">
                <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)" Style="@(_currentPage == 1 ? "background-color: #f1f5f9; color: #cbd5e1;" : "background-color: white; border: 1px solid #E5E7EB; color: #3B82F6;")" Class="rounded-0" />
            <MudButton OnClick="@(() => OnPageChanged(_currentPage - 1))" Disabled="@(_currentPage == 1)" Variant="Variant.Text" StartIcon="@Icons.Material.Filled.ChevronLeft" Size="Size.Small" Style="text-transform: none; font-weight: 700;">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" Style="text-transform: none; font-weight: 700;">Next</MudButton>
            <MudIconButton Icon="@Icons.Material.Filled.LastPage" Size="Size.Small" OnClick="@(() => OnPageChanged(_totalPage))" Disabled="@(_currentPage == _totalPage || _totalPage == 0)" Style="@(_currentPage == _totalPage || _totalPage == 0 ? "background-color: #f1f5f9; color: #cbd5e1;" : "background-color: white; border: 1px solid #E5E7EB; color: #3B82F6;")" 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<UpdateLeadRequest> OnEdit { get; set; }
    [Parameter] public EventCallback<UpdateLeadRequest> OnView { get; set; }

    private List<GetLeadListResponse> _leads = new();
    private GetLeadListResponse? _selectedLead;
    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;
        _selectedLead = null;
        StateHasChanged();
        var response = await LeadService.GetLeadListAsync();
        await Task.Delay(500);
        if (response != null && response.IsSuccess)
        {
            _leads = response.Value ?? new List<GetLeadListResponse>();
        }
        _isRefreshing = false;
        StateHasChanged();
    }

    private IEnumerable<GetLeadListResponse> GetFilteredData()
    {
        if (string.IsNullOrWhiteSpace(_searchString)) return _leads;
        return _leads.Where(x =>
            (x.Title?.Contains(_searchString, StringComparison.OrdinalIgnoreCase) ?? false) ||
            (x.CompanyName?.Contains(_searchString, StringComparison.OrdinalIgnoreCase) ?? false) ||
            (x.AutoNumber?.Contains(_searchString, StringComparison.OrdinalIgnoreCase) ?? false)
        );
    }

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

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

    private async Task ExportToExcel()
    {
        _isExporting = true;
        using var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Leads");
        var currentRow = 1;
        worksheet.Cell(currentRow, 1).Value = "Number";
        worksheet.Cell(currentRow, 2).Value = "Title";
        worksheet.Cell(currentRow, 3).Value = "Company";
        worksheet.Cell(currentRow, 4).Value = "Stage";
        
        foreach (var item in GetFilteredData())
        {
            currentRow++;
            worksheet.Cell(currentRow, 1).Value = item.AutoNumber;
            worksheet.Cell(currentRow, 2).Value = item.Title;
            worksheet.Cell(currentRow, 3).Value = item.CompanyName;
            worksheet.Cell(currentRow, 4).Value = item.PipelineStage.ToString();
        }
        worksheet.Columns().AdjustToContents();
        using var stream = new MemoryStream();
        workbook.SaveAs(stream);
        var content = Convert.ToBase64String(stream.ToArray());
        await JSRuntime.InvokeVoidAsync("downloadFile", "Lead_List.xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", content);
        _isExporting = false;
    }

    private void OnPageChanged(int page) { if (page >= 1 && page <= _totalPage) { _skip = (page - 1) * _top; _selectedLead = null; } }
    private void OnPageSizeChanged(int size) { _top = size; _skip = 0; _selectedLead = null; }

    private async Task InvokeEdit() { if (_selectedLead != null) { var req = await MapToRequest(_selectedLead.Id!); if (req != null) await OnEdit.InvokeAsync(req); } }
    private async Task InvokeView() { if (_selectedLead != null) { var req = await MapToRequest(_selectedLead.Id!); if (req != null) await OnView.InvokeAsync(req); } }

    private async Task<UpdateLeadRequest?> MapToRequest(string id)
    {
        var res = await LeadService.GetLeadByIdAsync(id);
        if (res != null && res.IsSuccess && res.Value != null)
        {
            var d = res.Value;
            return new UpdateLeadRequest { Id = d.Id, Title = d.Title, Description = d.Description, CompanyName = d.CompanyName, CompanyDescription = d.CompanyDescription, CompanyAddressStreet = d.CompanyAddressStreet, CompanyAddressCity = d.CompanyAddressCity, CompanyAddressState = d.CompanyAddressState, CompanyAddressZipCode = d.CompanyAddressZipCode, CompanyAddressCountry = d.CompanyAddressCountry, CompanyPhoneNumber = d.CompanyPhoneNumber, CompanyFaxNumber = d.CompanyFaxNumber, CompanyEmail = d.CompanyEmail, CompanyWebsite = d.CompanyWebsite, CompanyWhatsApp = d.CompanyWhatsApp, CompanyLinkedIn = d.CompanyLinkedIn, CompanyFacebook = d.CompanyFacebook, CompanyInstagram = d.CompanyInstagram, CompanyTwitter = d.CompanyTwitter, DateProspecting = d.DateProspecting, DateClosingEstimation = d.DateClosingEstimation, DateClosingActual = d.DateClosingActual, AmountTargeted = d.AmountTargeted, AmountClosed = d.AmountClosed, BudgetScore = d.BudgetScore, AuthorityScore = d.AuthorityScore, NeedScore = d.NeedScore, TimelineScore = d.TimelineScore, PipelineStage = d.PipelineStage, ClosingStatus = d.ClosingStatus, ClosingNote = d.ClosingNote, CampaignId = d.CampaignId, SalesTeamId = d.SalesTeamId, CreatedAt = d.CreatedAt, CreatedBy = d.CreatedBy, UpdatedAt = d.UpdatedAt, UpdatedBy = d.UpdatedBy };
        }
        return null;
    }

    private async Task OnDelete()
    {
        if (_selectedLead == null) return;
        var parameters = new DialogParameters<_DeleteConfirmation> { { x => x.ContentText, _selectedLead.Title } };
        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 LeadService.DeleteLeadByIdAsync(_selectedLead.Id!)) { await LoadData(); Snackbar.Add("Deleted", Severity.Success); }
        }
    }
}