@page "/admin/revenue-trackings"
@using TaxBaik.Web.Services.AdminClients
@inject IRevenueTrackingBrowserClient RevenueClient
@inject IClientBrowserClient ClientClient
@inject ISnackbar Snackbar
@inject IDialogService DialogService
@attribute [Authorize]

<PageTitle>수익 추적 관리</PageTitle>

<section class="admin-page-hero">
    <div>
        <MudText Typo="Typo.caption" Class="admin-eyebrow">CRM & 세무관리</MudText>
        <MudText Typo="Typo.h4" Class="admin-page-title">수익 추적 관리</MudText>
        <MudText Typo="Typo.body2" Class="admin-page-subtitle">청구, 납부, 미수금 상태를 한 화면에서 관리합니다.</MudText>
    </div>
    <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="OpenCreateDialog" StartIcon="@Icons.Material.Filled.Add">
        새 청구 추가
    </MudButton>
</section>

<MudPaper Class="admin-surface" Elevation="0">
    @if (revenues is null)
    {
        <MudProgressLinear Indeterminate="true" />
    }
    else if (revenues.Count == 0)
    {
        <MudAlert Severity="Severity.Info" Class="mt-4">
            <MudIcon Icon="@Icons.Material.Filled.Payments" Class="me-2" />
            청구 기록이 없습니다.
        </MudAlert>
    }
    else
    {
        <MudDataGrid T="RevenueTracking"
            Items="@revenues"
            Dense="true"
            Hover="true"
            Striped="true"
            Virtualize="true"
            RowsPerPage="30"
            Class="admin-grid">
            <Columns>
                <PropertyColumn Property="x => x.Id" Title="ID" Sortable="true" />
                <TemplateColumn Title="고객">
                    <CellTemplate>
                        @if (clientMap.TryGetValue(context.Item.ClientId, out var clientName))
                        {
                            <MudLink Href="@($"/taxbaik/admin/clients/{context.Item.ClientId}")" Color="Color.Primary">
                                @clientName
                            </MudLink>
                        }
                    </CellTemplate>
                </TemplateColumn>
                <PropertyColumn Property="x => x.InvoiceNumber" Title="청구번호" />
                <PropertyColumn Property="x => x.InvoiceDate" Title="청구일" Format="yyyy-MM-dd" />
                <PropertyColumn Property="x => x.Amount" Title="청구액" Format="C" />
                <TemplateColumn Title="납부여부">
                    <CellTemplate>
                        @if (context.Item.PaymentStatus == "paid")
                        {
                            <MudChip Size="Size.Small" Color="Color.Success" Variant="Variant.Filled">납부</MudChip>
                        }
                        else
                        {
                            <MudChip Size="Size.Small" Color="Color.Warning" Variant="Variant.Filled">미납</MudChip>
                        }
                    </CellTemplate>
                </TemplateColumn>
                <TemplateColumn Title="작업" Sortable="false">
                    <CellTemplate>
                        <MudButtonGroup Size="Size.Small" Variant="Variant.Outlined">
                            @if (context.Item.PaymentStatus != "paid")
                            {
                                <MudIconButton Icon="@Icons.Material.Filled.CheckCircle" Color="Color.Success"
                                    OnClick="@(async () => await MarkPaid(context.Item.Id))" Title="납부 처리" />
                            }
                            <MudIconButton Icon="@Icons.Material.Filled.Delete" Color="Color.Error"
                                OnClick="@(async () => await DeleteRevenue(context.Item.Id))" />
                        </MudButtonGroup>
                    </CellTemplate>
                </TemplateColumn>
            </Columns>
        </MudDataGrid>
    }
</MudPaper>

<!-- Create Dialog -->
<MudDialog @bind-IsVisible="isDialogOpen" Options="new DialogOptions { MaxWidth = MaxWidth.Small, FullWidth = true }">
    <TitleContent>
        <MudText Typo="Typo.h6">새 청구 추가</MudText>
    </TitleContent>
    <DialogContent>
        <MudForm @ref="form">
            <MudSelect T="int" @bind-Value="revenueForm.ClientId" Label="고객" Required="true" Variant="Variant.Outlined" FullWidth="true" Class="mb-4">
                @foreach (var client in clients)
                {
                    <MudSelectItem Value="@client.Id">@GetClientDisplayName(client)</MudSelectItem>
                }
            </MudSelect>
            <MudTextField T="string" @bind-Value="revenueForm.InvoiceNumber" Label="청구번호" Variant="Variant.Outlined" FullWidth="true" Class="mb-4" Required="true" />
            <MudDatePicker @bind-Date="revenueForm.InvoiceDate" Label="청구일" Variant="Variant.Outlined" FullWidth="true" Class="mb-4" Required="true" />
            <MudNumericField T="decimal" @bind-Value="revenueForm.Amount" Label="청구액" Variant="Variant.Outlined" FullWidth="true" Class="mb-4" Required="true" />
            <MudSelect T="string" @bind-Value="revenueForm.ServiceType" Label="서비스 유형" Variant="Variant.Outlined" FullWidth="true" Class="mb-4">
                <MudSelectItem Value="@("기장 수수료")">기장 수수료</MudSelectItem>
                <MudSelectItem Value="@("세무조정료")">세무조정료</MudSelectItem>
                <MudSelectItem Value="@("세무상담료")">세무상담료</MudSelectItem>
                <MudSelectItem Value="@("신고 대행료")">신고 대행료</MudSelectItem>
                <MudSelectItem Value="@("자문 수수료")">자문 수수료</MudSelectItem>
            </MudSelect>
            <MudDatePicker @bind-Date="revenueForm.DueDate" Label="납부예정일" Variant="Variant.Outlined" FullWidth="true" Class="mb-4" />
        </MudForm>
    </DialogContent>
    <DialogActions>
        <MudButton OnClick="CloseDialog">취소</MudButton>
        <MudButton Color="Color.Primary" OnClick="SaveRevenue">저장</MudButton>
    </DialogActions>
</MudDialog>

@code {
    [CascadingParameter]
    private Task<AuthenticationState>? AuthStateTask { get; set; }

    private List<RevenueTracking>? revenues;
    private List<Client> clients = [];
    private Dictionary<int, string> clientMap = new();
    private MudForm? form;
    private bool isDialogOpen;
    private RevenueForm revenueForm = new();

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

    private async Task LoadData()
    {
        try
        {
            revenues = await RevenueClient.GetAllAsync();
            var (clientItems, _) = await ClientClient.GetPagedAsync(pageSize: 1000);
            clients = clientItems.ToList();
            clientMap = clients.ToDictionary(c => c.Id, GetClientDisplayName);
        }
        catch (Exception ex)
        {
            Snackbar.Add($"데이터 로드 실패: {ex.Message}", Severity.Error);
        }
    }

    private void OpenCreateDialog()
    {
        revenueForm = new RevenueForm
        {
            ClientId = clients.FirstOrDefault()?.Id ?? 0,
            InvoiceDate = DateTime.Today,
            DueDate = DateTime.Today.AddDays(14)
        };
        isDialogOpen = true;
    }

    private async Task SaveRevenue()
    {
        if (form != null)
        {
            await form.Validate();
            if (!form.IsValid)
            {
                Snackbar.Add("필수 항목을 입력해주세요.", Severity.Warning);
                return;
            }
        }

        try
        {
            var newId = await RevenueClient.CreateAsync(
                revenueForm.ClientId,
                revenueForm.InvoiceNumber,
                revenueForm.InvoiceDate ?? DateTime.Now,
                revenueForm.Amount,
                revenueForm.ServiceType,
                revenueForm.DueDate);

            if (newId > 0)
            {
                Snackbar.Add("청구가 추가되었습니다.", Severity.Success);
                CloseDialog();
                await LoadData();
            }
        }
        catch (Exception ex)
        {
            Snackbar.Add($"저장 실패: {ex.Message}", Severity.Error);
        }
    }

    private async Task MarkPaid(int id)
    {
        try
        {
            await RevenueClient.MarkPaidAsync(id, DateTime.Now);
            Snackbar.Add("납부가 처리되었습니다.", Severity.Success);
            await LoadData();
        }
        catch (Exception ex)
        {
            Snackbar.Add($"처리 실패: {ex.Message}", Severity.Error);
        }
    }

    private async Task DeleteRevenue(int id)
    {
        var parameters = new DialogParameters
        {
            { "Title", "삭제 확인" },
            { "Message", "이 청구를 삭제하시겠습니까?" }
        };

        var dialog = await DialogService.ShowAsync<ConfirmDialog>("", parameters);
        var result = await dialog.Result;

        if (result?.Canceled ?? true)
            return;

        try
        {
            await RevenueClient.DeleteAsync(id);
            Snackbar.Add("청구가 삭제되었습니다.", Severity.Success);
            await LoadData();
        }
        catch (Exception ex)
        {
            Snackbar.Add($"삭제 실패: {ex.Message}", Severity.Error);
        }
    }

    private void CloseDialog()
    {
        isDialogOpen = false;
        revenueForm = new();
    }

    private static string GetClientDisplayName(Client client)
        => !string.IsNullOrWhiteSpace(client.CompanyName)
            ? client.CompanyName
            : !string.IsNullOrWhiteSpace(client.Name)
                ? client.Name
                : $"Client #{client.Id}";
    private class RevenueForm
    {
        public int ClientId { get; set; }
        public string InvoiceNumber { get; set; } = "";
        public DateTime? InvoiceDate { get; set; }
        public decimal Amount { get; set; }
        public string? ServiceType { get; set; }
        public DateTime? DueDate { get; set; }
    }
}