@page "/admin/tax-filings"
@attribute [Authorize]
@using TaxBaik.Web.Services
@using TaxBaik.Domain.Entities
@inject ITaxFilingBrowserClient FilingClient
@inject IClientBrowserClient ClientClient
@inject ISnackbar Snackbar

<PageTitle>신고 일정 관리</PageTitle>

<section class="admin-page-hero">
    <div>
        <MudText Typo="Typo.caption" Class="admin-eyebrow">Tax Schedule</MudText>
        <MudText Typo="Typo.h4" Class="admin-page-title">신고 일정</MudText>
        <MudText Typo="Typo.body2" Class="admin-page-subtitle">고객별 세금 신고 마감일을 관리하고 완료 처리합니다.</MudText>
    </div>
    <MudButton Variant="Variant.Filled" Color="Color.Primary"
               OnClick="@(() => showAddForm = !showAddForm)"
               StartIcon="@Icons.Material.Filled.Add">
        일정 추가
    </MudButton>
</section>

@if (showAddForm)
{
    <MudPaper Class="pa-4 mb-4" Elevation="1">
        <MudText Typo="Typo.h6" Class="mb-3">새 신고 일정</MudText>
        <MudGrid Spacing="2">
            <MudItem xs="12" sm="6" md="4">
                <MudAutocomplete T="Domain.Entities.Client" @bind-Value="selectedClient"
                                 Label="고객 검색 *"
                                 SearchFunc="SearchClients"
                                 ToStringFunc="@(c => c == null ? "" : $"{c.Name} {c.CompanyName ?? ""}")"
                                 Variant="Variant.Outlined" />
            </MudItem>
            <MudItem xs="12" sm="6" md="4">
                <MudSelect T="string" @bind-Value="newFilingType" Label="신고 유형 *" Variant="Variant.Outlined">
                    @foreach (var t in TaxFilingService.FilingTypes)
                    {
                        <MudSelectItem Value="@t">@t</MudSelectItem>
                    }
                </MudSelect>
            </MudItem>
            <MudItem xs="12" sm="6" md="4">
                <MudDatePicker @bind-Date="newDueDate" Label="신고 기한 *" DateFormat="yyyy-MM-dd" />
            </MudItem>
            <MudItem xs="12">
                <MudTextField T="string" @bind-Value="newMemo" Label="메모" Variant="Variant.Outlined" />
            </MudItem>
        </MudGrid>
        <MudStack Row="true" Class="mt-3" Spacing="2">
            <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="AddFiling">저장</MudButton>
            <MudButton Variant="Variant.Outlined" OnClick="@(() => showAddForm = false)">취소</MudButton>
        </MudStack>
    </MudPaper>
}

<MudPaper Class="admin-surface" Elevation="0">
    <MudTabs Rounded="true" Elevation="0" Class="admin-tabs">
        <MudTabPanel Text="신고 예정">
            <FilingTable Filings="@pending" OnStatusChange="Reload" />
        </MudTabPanel>
        <MudTabPanel Text="신고 완료">
            <FilingTable Filings="@filed" OnStatusChange="Reload" />
        </MudTabPanel>
        <MudTabPanel Text="기한 초과">
            <FilingTable Filings="@overdue" OnStatusChange="Reload" />
        </MudTabPanel>
    </MudTabs>
</MudPaper>

@code {
    private List<Domain.Entities.TaxFiling> pending = [];
    private List<Domain.Entities.TaxFiling> filed = [];
    private List<Domain.Entities.TaxFiling> overdue = [];

    private bool showAddForm;
    private Domain.Entities.Client? selectedClient;
    private string newFilingType = "";
    private DateTime? newDueDate = DateTime.Today.AddDays(30);
    private string newMemo = "";

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

    private async Task Reload()
    {
        try
        {
            var all = (await FilingClient.GetUpcomingAsync(365)).ToList();
            pending  = all.Where(x => x.Status == "pending").ToList();
            filed    = all.Where(x => x.Status == "filed").ToList();
            overdue  = all.Where(x => x.Status == "overdue").ToList();
        }
        catch (Exception ex)
        {
            Snackbar.Add($"오류: {ex.Message}", Severity.Error);
        }
    }

    private async Task<IEnumerable<Client>> SearchClients(string value)
    {
        try
        {
            var (items, _) = await ClientClient.GetPagedAsync(1, 100, search: value);
            return items;
        }
        catch
        {
            return [];
        }
    }

    private static string GetClientDisplayName(Client client)
        => !string.IsNullOrWhiteSpace(client.CompanyName)
            ? client.CompanyName
            : !string.IsNullOrWhiteSpace(client.Name)
                ? client.Name
                : $"Client #{client.Id}";
    private async Task AddFiling()
    {
        try
        {
            if (selectedClient == null)
            {
                Snackbar.Add("고객을 선택하세요.", Severity.Warning);
                return;
            }
            var filing = new TaxFiling
            {
                ClientId = selectedClient.Id,
                FilingType = newFilingType,
                DueDate = newDueDate?.ToUniversalTime() ?? DateTime.UtcNow,
                Status = "pending",
                Memo = string.IsNullOrWhiteSpace(newMemo) ? null : newMemo
            };
            var result = await FilingClient.CreateAsync(filing);
            if (result != null)
            {
                showAddForm = false;
                Snackbar.Add("신고 일정이 추가되었습니다.", Severity.Success);
                await Reload();
            }
            else
            {
                Snackbar.Add("추가 실패", Severity.Error);
            }
        }
        catch (Exception ex)
        {
            Snackbar.Add($"오류: {ex.Message}", Severity.Error);
        }
    }
}