@page "/admin/clients"
@attribute [Authorize]
@using TaxBaik.Web.Services
@using TaxBaik.Domain.Entities
@inject IClientBrowserClient ClientClient
@inject NavigationManager Navigation
@inject IJSRuntime JS

<PageTitle>고객 관리</PageTitle>
<section class="admin-page-hero">
    <div>
        <div class="admin-eyebrow">CRM</div>
        <h1 class="admin-page-title">고객 관리</h1>
        <p class="admin-page-subtitle">고객 카드를 등록하고 상담 이력을 관리합니다.</p>
    </div>
    <button type="button" class="site-button primary" @onclick='() => Navigation.NavigateTo("/taxbaik/admin/clients/create")'>고객 등록</button>
</section>

<div class="admin-surface mb-3 pa-3">
    <div class="admin-filter-grid">
        <input class="admin-input" placeholder="검색 (이름·연락처·회사명)" @bind="searchText" @onkeyup="OnSearchKeyUp" />
        <select class="admin-input" @bind="statusFilter">
            <option value="">전체</option>
            <option value="active">활성</option>
            <option value="inactive">비활성</option>
        </select>
        <button type="button" class="site-button secondary" @onclick="SearchAsync">검색</button>
        <button type="button" class="site-button secondary" @onclick="ResetAsync">초기화</button>
    </div>
</div>

<div class="admin-surface">
    @if (clients is null)
    {
        <Skeleton Count="6" CssClass="taxbaik-skeleton-grid" />
    }
    else if (!clients.Any())
    {
        <div class="muted mt-4">등록된 고객이 없습니다.</div>
    }
    else
    {
        <div class="admin-table-wrap">
            <table class="admin-table">
                <thead>
                    <tr>
                        <th>이름</th>
                        <th>회사명</th>
                        <th>연락처</th>
                        <th>서비스</th>
                        <th>세금 유형</th>
                        <th>상태</th>
                        <th>유입 경로</th>
                        <th>등록일</th>
                        <th></th>
                    </tr>
                </thead>
                <tbody>
                    @foreach (var c in clients)
                    {
                        <tr>
                            <td><strong>@c.Name</strong></td>
                            <td>@(c.CompanyName ?? "—")</td>
                            <td>@(c.Phone ?? "—")</td>
                            <td>@(c.ServiceType ?? "—")</td>
                            <td>@(c.TaxType ?? "—")</td>
                            <td>@(c.Status == "active" ? "활성" : "비활성")</td>
                            <td>@(c.Source ?? "—")</td>
                            <td class="small">@c.CreatedAt.ToLocalTime().ToString("yy.MM.dd")</td>
                            <td>
                                <div class="admin-row-actions">
                                    <button type="button" class="admin-icon-button" @onclick="@(() => Navigation.NavigateTo($"/taxbaik/admin/clients/{c.Id}/edit"))">✎</button>
                                    <button type="button" class="admin-icon-button danger" @onclick="@(() => DeleteAsync(c))">✕</button>
                                </div>
                            </td>
                        </tr>
                    }
                </tbody>
            </table>
        </div>
        @if (totalPages > 1)
        {
            <div class="admin-pagination">
                <button type="button" class="site-button secondary" disabled="@(currentPage <= 1)" @onclick="PreviousPage">이전</button>
                <span>@currentPage / @totalPages</span>
                <button type="button" class="site-button secondary" disabled="@(currentPage >= totalPages)" @onclick="NextPage">다음</button>
            </div>
        }
        <div class="admin-table-footer">총 @(totalCount)명</div>
    }
</div>

@code {
    [CascadingParameter] private Task<AuthenticationState>? AuthStateTask { get; set; }
    private List<Client>? clients;
    private string searchText = "";
    private string statusFilter = "";
    private int currentPage = 1;
    private int totalCount;
    private int totalPages;
    private const int PageSize = 20;

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender && AuthStateTask != null)
        {
            var authState = await AuthStateTask;
            if (authState.User.Identity?.IsAuthenticated == true)
            {
                await LoadAsync();
                StateHasChanged();
            }
        }
    }

    private async Task LoadAsync()
    {
        try
        {
            var (items, total) = await ClientClient.GetPagedAsync(currentPage, PageSize, string.IsNullOrEmpty(statusFilter) ? null : statusFilter, string.IsNullOrEmpty(searchText) ? null : searchText);
            clients = items.ToList();
            totalCount = total;
            totalPages = (int)Math.Ceiling((double)total / PageSize);
        }
        catch (Exception ex)
        {
            await JS.InvokeVoidAsync("alert", $"오류: {ex.Message}");
            clients = [];
        }
    }

    private async Task SearchAsync() { currentPage = 1; await LoadAsync(); }
    private async Task ResetAsync() { searchText = ""; statusFilter = ""; currentPage = 1; await LoadAsync(); }
    private async Task PreviousPage() { if (currentPage > 1) { currentPage--; await LoadAsync(); } }
    private async Task NextPage() { if (currentPage < totalPages) { currentPage++; await LoadAsync(); } }
    private async Task OnSearchKeyUp(KeyboardEventArgs e) { if (e.Key == "Enter") await SearchAsync(); }
    private async Task DeleteAsync(Client client)
    {
        var confirmed = await JS.InvokeAsync<bool>("confirm", $"'{client.Name}' 고객을 삭제하시겠습니까? 관련 데이터도 함께 삭제됩니다.");
        if (!confirmed) return;
        try
        {
            var success = await ClientClient.DeleteAsync(client.Id);
            if (success)
            {
                await JS.InvokeVoidAsync("alert", $"{client.Name} 고객이 삭제되었습니다.");
                await LoadAsync();
            }
        }
        catch (Exception ex)
        {
            await JS.InvokeVoidAsync("alert", $"오류: {ex.Message}");
        }
    }
}