@page "/admin/consulting-activities"
@using TaxBaik.Web.Services.AdminClients
@inject IConsultingActivityBrowserClient ActivityClient
@inject IClientBrowserClient ClientClient
@inject ISnackbar Snackbar
@inject IDialogService DialogService
@attribute [Authorize]

<PageTitle>상담 활동 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">상담 활동 관리</MudText>
        <MudText Typo="Typo.body2" Class="admin-page-subtitle">고객별 상담 이력과 팔로업을 추적합니다.</MudText>
    </div>
    <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="OpenCreateDialog" StartIcon="@Icons.Material.Filled.Add">
        새 활동 기록
    </MudButton>
</section>

<MudPaper Class="admin-surface" Elevation="0">
    @if (activities is null)
    {
        <MudProgressLinear Indeterminate="true" />
    }
    else if (activities.Count == 0)
    {
        <MudAlert Severity="Severity.Info" Class="mt-4">
            <MudIcon Icon="@Icons.Material.Filled.Timeline" Class="me-2" />
            상담 활동이 없습니다.
        </MudAlert>
    }
    else
    {
        <MudDataGrid T="ConsultingActivity"
            Items="@activities"
            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.ActivityType" Title="활동 유형" />
                <PropertyColumn Property="x => x.ActivityDate" Title="활동일시" Format="g" />
                <TemplateColumn Title="설명">
                    <CellTemplate>
                        @{
                            var desc = context.Item.Description ?? "";
                            if (desc.Length > 30) desc = desc.Substring(0, 30) + "...";
                        }
                        <span>@desc</span>
                    </CellTemplate>
                </TemplateColumn>
                <TemplateColumn Title="다음 팔로업">
                    <CellTemplate>
                        @if (context.Item.NextFollowupDate.HasValue)
                        {
                            var daysLeft = (context.Item.NextFollowupDate.Value.Date - DateTime.Today).Days;
                            <MudChip Size="Size.Small"
                                Color="@(daysLeft < 0 ? Color.Error : daysLeft <= 3 ? Color.Warning : Color.Success)"
                                Variant="Variant.Filled">
                                @context.Item.NextFollowupDate.Value.ToString("yyyy-MM-dd")
                            </MudChip>
                        }
                    </CellTemplate>
                </TemplateColumn>
                <TemplateColumn Title="작업" Sortable="false">
                    <CellTemplate>
                        <MudButtonGroup Size="Size.Small" Variant="Variant.Outlined">
                            <MudIconButton Icon="@Icons.Material.Filled.Edit" OnClick="@(async () => await OpenEditDialog(context.Item))" />
                            <MudIconButton Icon="@Icons.Material.Filled.Delete" Color="Color.Error"
                                OnClick="@(async () => await DeleteActivity(context.Item.Id))" />
                        </MudButtonGroup>
                    </CellTemplate>
                </TemplateColumn>
            </Columns>
        </MudDataGrid>
    }
</MudPaper>

<MudDialog @bind-IsVisible="isDialogOpen" Options="new DialogOptions { MaxWidth = MaxWidth.Small, FullWidth = true }">
    <TitleContent>
        <MudText Typo="Typo.h6">@(editingActivity == null ? "새 활동 기록" : "활동 기록 수정")</MudText>
    </TitleContent>
    <DialogContent>
        <MudForm @ref="form">
            <MudSelect T="int" @bind-Value="activityForm.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>
            <MudSelect T="string" @bind-Value="activityForm.ActivityType" Label="활동 유형" Variant="Variant.Outlined" FullWidth="true" Class="mb-4" Required="true">
                <MudSelectItem Value="@("방문 상담")">방문 상담</MudSelectItem>
                <MudSelectItem Value="@("전화 상담")">전화 상담</MudSelectItem>
                <MudSelectItem Value="@("세무조사 대응 미팅")">세무조사 대응 미팅</MudSelectItem>
                <MudSelectItem Value="@("카카오톡 상담")">카카오톡 상담</MudSelectItem>
                <MudSelectItem Value="@("이메일 자료 접수")">이메일 자료 접수</MudSelectItem>
                <MudSelectItem Value="@("기타")">기타</MudSelectItem>
            </MudSelect>
            <MudDatePicker @bind-Date="activityForm.ActivityDate" Label="활동일" Variant="Variant.Outlined" FullWidth="true" Class="mb-4" Required="true" />
            <MudTextField T="string" @bind-Value="activityForm.Description" Label="설명" Variant="Variant.Outlined" FullWidth="true" Lines="3" Class="mb-4" Required="true" />
            <MudDatePicker @bind-Date="activityForm.NextFollowupDate" Label="다음 팔로업일" Variant="Variant.Outlined" FullWidth="true" Class="mb-4" />
        </MudForm>
    </DialogContent>
    <DialogActions>
        <MudButton OnClick="CloseDialog">취소</MudButton>
        <MudButton Color="Color.Primary" OnClick="SaveActivity">저장</MudButton>
    </DialogActions>
</MudDialog>

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

    private List<ConsultingActivity>? activities;
    private List<Client> clients = [];
    private Dictionary<int, string> clientMap = new();
    private MudForm? form;
    private bool isDialogOpen;
    private ConsultingActivity? editingActivity;
    private ConsultingActivityForm activityForm = 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
        {
            activities = await ActivityClient.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()
    {
        editingActivity = null;
        activityForm = new ConsultingActivityForm
        {
            ActivityDate = DateTime.Now,
            ClientId = clients.FirstOrDefault()?.Id ?? 0
        };
        isDialogOpen = true;
    }

    private async Task OpenEditDialog(ConsultingActivity activity)
    {
        editingActivity = activity;
        activityForm = new ConsultingActivityForm
        {
            ClientId = activity.ClientId,
            ActivityType = activity.ActivityType,
            ActivityDate = activity.ActivityDate,
            Description = activity.Description,
            NextFollowupDate = activity.NextFollowupDate
        };
        isDialogOpen = true;
    }

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

        try
        {
            if (editingActivity == null)
            {
                var actDate = activityForm.ActivityDate ?? DateTime.Now;
                var newId = await ActivityClient.CreateAsync(
                    activityForm.ClientId,
                    activityForm.ActivityType,
                    actDate,
                    activityForm.Description,
                    null,
                    activityForm.NextFollowupDate);

                if (newId > 0)
                {
                    Snackbar.Add("활동이 기록되었습니다.", Severity.Success);
                    CloseDialog();
                    await LoadData();
                }
            }
            else
            {
                await ActivityClient.UpdateAsync(
                    editingActivity.Id,
                    null,
                    activityForm.NextFollowupDate);

                Snackbar.Add("활동이 업데이트되었습니다.", Severity.Success);
                CloseDialog();
                await LoadData();
            }
        }
        catch (Exception ex)
        {
            Snackbar.Add($"저장 실패: {ex.Message}", Severity.Error);
        }
    }

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

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

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

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

    private void CloseDialog()
    {
        isDialogOpen = false;
        editingActivity = null;
        activityForm = new();
    }

    private static string GetClientDisplayName(Client client)
        => !string.IsNullOrWhiteSpace(client.CompanyName)
            ? client.CompanyName
            : !string.IsNullOrWhiteSpace(client.Name)
                ? client.Name
                : $"Client #{client.Id}";
    private class ConsultingActivityForm
    {
        public int ClientId { get; set; }
        public string ActivityType { get; set; } = "";
        public DateTime? ActivityDate { get; set; } = DateTime.Now;
        public string Description { get; set; } = "";
        public DateTime? NextFollowupDate { get; set; }
    }
}