@page "/admin/tax-filing-schedules"
@using TaxBaik.Web.Services.AdminClients
@inject ITaxFilingScheduleBrowserClient TaxFilingClient
@inject IClientBrowserClient ClientClient
@inject IJSRuntime JS
@attribute [Authorize]

<PageTitle>신고 일정</PageTitle>
<section class="admin-page-hero">
    <div>
        <div class="admin-eyebrow">CRM & 세무관리</div>
        <h1 class="admin-page-title">신고 일정</h1>
        <p class="admin-page-subtitle">고객별 마감일과 처리 상태를 한 화면에서 관리합니다.</p>
    </div>
    <button type="button" class="site-button primary" @onclick="OpenCreateDialog">새 일정 추가</button>
</section>

<div class="admin-surface">
    @if (schedules is null)
    {
        <Skeleton Count="6" CssClass="taxbaik-skeleton-grid" />
    }
    else if (schedules.Count == 0)
    {
        <div class="muted">신고 일정이 없습니다.</div>
    }
    else
    {
        <div class="admin-table-wrap">
            <table class="admin-table">
                <thead>
                    <tr>
                        <th>ID</th>
                        <th>고객</th>
                        <th>신고 유형</th>
                        <th>마감일</th>
                        <th>신고연도</th>
                        <th>상태</th>
                        <th>작업</th>
                    </tr>
                </thead>
                <tbody>
                    @foreach (var item in schedules)
                    {
                        var daysLeft = (item.DueDate.Date - DateTime.Today).Days;
                        <tr>
                            <td>@item.Id</td>
                            <td>@clientMap.GetValueOrDefault(item.ClientId, $"Client #{item.ClientId}")</td>
                            <td>@item.FilingType</td>
                            <td>@item.DueDate.ToString("yyyy-MM-dd") @(daysLeft >= 0 ? $"(D-{daysLeft})" : $"(마감 {Math.Abs(daysLeft)}일 경과)")</td>
                            <td>@item.FilingYear</td>
                            <td>@(item.Status == "completed" ? "완료" : "대기")</td>
                            <td>
                                <div class="admin-row-actions">
                                    @if (item.Status != "completed")
                                    {
                                        <button type="button" class="site-button secondary" @onclick="@(async () => await CompleteSchedule(item.Id))">완료</button>
                                    }
                                    <button type="button" class="admin-icon-button danger" @onclick="@(async () => await DeleteSchedule(item.Id))">✕</button>
                                </div>
                            </td>
                        </tr>
                    }
                </tbody>
            </table>
        </div>
    }
</div>

<dialog class="admin-dialog" open="@isDialogOpen">
    <form class="admin-dialog-card" @onsubmit="SaveSchedule" @onsubmit:preventDefault="true">
        <h3>새 신고 일정 추가</h3>
        <label>고객
            <select class="admin-input" @bind="ClientIdText">
                <option value="">선택하세요</option>
                @foreach (var client in clients)
                {
                    <option value="@client.Id.ToString()">@GetClientDisplayName(client)</option>
                }
            </select>
        </label>
        <label>신고 유형
            <select class="admin-input" @bind="scheduleForm.FilingType">
                <option value="">선택하세요</option>
                <option value="종합소득세">종합소득세</option>
                <option value="부가가치세">부가가치세</option>
                <option value="법인세">법인세</option>
                <option value="원천세">원천세</option>
                <option value="종합부동산세">종합부동산세</option>
                <option value="양도소득세">양도소득세</option>
                <option value="상속·증여세">상속·증여세</option>
                <option value="세무조정">세무조정</option>
            </select>
        </label>
        <label>마감일 <input class="admin-input" type="text" placeholder="2026-07-01" @bind="DueDateText" /></label>
        <label>신고연도 <input class="admin-input" type="text" placeholder="2026" @bind="FilingYearText" /></label>
        <div class="admin-dialog-actions">
            <button type="button" class="site-button secondary" @onclick="CloseDialog">취소</button>
            <button type="submit" class="site-button primary">저장</button>
        </div>
    </form>
</dialog>

@code {
    [CascadingParameter] private Task<AuthenticationState>? AuthStateTask { get; set; }
    private List<TaxFilingSchedule>? schedules;
    private List<Client> clients = [];
    private Dictionary<int, string> clientMap = new();
    private bool isDialogOpen;
    private TaxFilingScheduleForm scheduleForm = new();
    private string ClientIdText { get => scheduleForm.ClientId > 0 ? scheduleForm.ClientId.ToString() : ""; set => scheduleForm.ClientId = int.TryParse(value, out var id) ? id : 0; }
    private string DueDateText { get => scheduleForm.DueDate?.ToString("yyyy-MM-dd") ?? ""; set => scheduleForm.DueDate = DateTime.TryParse(value, out var dt) ? dt : null; }
    private string FilingYearText { get => scheduleForm.FilingYear.ToString(); set => scheduleForm.FilingYear = int.TryParse(value, out var year) ? year : DateTime.Now.Year; }

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

    private async Task LoadData()
    {
        try
        {
            schedules = await TaxFilingClient.GetAllAsync();
            var (clientItems, _) = await ClientClient.GetPagedAsync(pageSize: 1000);
            clients = clientItems.ToList();
            clientMap = clients.ToDictionary(c => c.Id, GetClientDisplayName);
        }
        catch (Exception ex)
        {
            await JS.InvokeVoidAsync("alert", $"데이터 로드 실패: {ex.Message}");
        }
    }

    private void OpenCreateDialog()
    {
        scheduleForm = new TaxFilingScheduleForm { FilingYear = DateTime.Now.Year, DueDate = DateTime.Today, ClientId = clients.FirstOrDefault()?.Id ?? 0 };
        isDialogOpen = true;
    }

    private async Task SaveSchedule()
    {
        if (scheduleForm.ClientId <= 0 || string.IsNullOrWhiteSpace(scheduleForm.FilingType))
        {
            await JS.InvokeVoidAsync("alert", "필수 항목을 입력해주세요.");
            return;
        }
        try
        {
            var newId = await TaxFilingClient.CreateAsync(scheduleForm.ClientId, scheduleForm.FilingType, scheduleForm.DueDate ?? DateTime.Today, scheduleForm.FilingYear);
            if (newId > 0)
            {
                await JS.InvokeVoidAsync("alert", "신고 일정이 추가되었습니다.");
                CloseDialog();
                await LoadData();
            }
        }
        catch (Exception ex)
        {
            await JS.InvokeVoidAsync("alert", $"저장 실패: {ex.Message}");
        }
    }

    private async Task CompleteSchedule(int id)
    {
        try
        {
            await TaxFilingClient.MarkCompletedAsync(id);
            await JS.InvokeVoidAsync("alert", "신고 일정이 완료 처리되었습니다.");
            await LoadData();
        }
        catch (Exception ex)
        {
            await JS.InvokeVoidAsync("alert", $"처리 실패: {ex.Message}");
        }
    }

    private async Task DeleteSchedule(int id)
    {
        if (!await JS.InvokeAsync<bool>("confirm", "이 신고 일정을 삭제하시겠습니까?")) return;
        try
        {
            await TaxFilingClient.DeleteAsync(id);
            await JS.InvokeVoidAsync("alert", "신고 일정이 삭제되었습니다.");
            await LoadData();
        }
        catch (Exception ex)
        {
            await JS.InvokeVoidAsync("alert", $"삭제 실패: {ex.Message}");
        }
    }

    private void CloseDialog() { isDialogOpen = false; scheduleForm = new(); }
    private static string GetClientDisplayName(Client client) => !string.IsNullOrWhiteSpace(client.CompanyName) ? client.CompanyName : !string.IsNullOrWhiteSpace(client.Name) ? client.Name : $"Client #{client.Id}";
    private sealed class TaxFilingScheduleForm { public int ClientId { get; set; } public string FilingType { get; set; } = ""; public DateTime? DueDate { get; set; } public int FilingYear { get; set; } = DateTime.Now.Year; }
}