@page "/admin/clients/create"
@page "/admin/clients/{Id:int}/edit"
@attribute [Authorize]
@using TaxBaik.Application.DTOs
@using TaxBaik.Web.Services
@using TaxBaik.Domain.Entities
@inject IClientBrowserClient ClientClient
@inject NavigationManager Navigation
@inject ISnackbar Snackbar

<PageTitle>@(Id.HasValue ? "고객 수정" : "고객 등록")</PageTitle>

<section class="admin-page-hero">
    <div>
        <MudText Typo="Typo.caption" Class="admin-eyebrow">CRM</MudText>
        <MudText Typo="Typo.h4" Class="admin-page-title">@(Id.HasValue ? "고객 수정" : "고객 등록")</MudText>
    </div>
    <MudButton Variant="Variant.Outlined" Href="/taxbaik/admin/clients"
               StartIcon="@Icons.Material.Filled.ArrowBack">목록으로</MudButton>
</section>

<MudPaper Class="admin-surface" Elevation="0" Style="max-width:720px;">
    @if (isLoading)
    {
        <MudProgressLinear Indeterminate="true" />
    }
    else
    {
        <MudForm @ref="form" @bind-IsValid="isValid">
            <MudGrid Spacing="3">
                @* 기본 정보 *@
                <MudItem xs="12">
                    <MudText Typo="Typo.subtitle1" Class="fw-bold mb-1">기본 정보</MudText>
                    <MudDivider />
                </MudItem>
                <MudItem xs="12" md="6">
                    <MudTextField @bind-Value="dto.Name" Label="고객명 *" Required="true"
                                  RequiredError="고객명을 입력하세요." />
                </MudItem>
                <MudItem xs="12" md="6">
                    <MudTextField @bind-Value="dto.CompanyName" Label="회사명 (선택)" />
                </MudItem>
                <MudItem xs="12" md="6">
                    <MudTextField @bind-Value="dto.Phone" Label="연락처"
                                  Placeholder="010-0000-0000" />
                </MudItem>
                <MudItem xs="12" md="6">
                    <MudTextField @bind-Value="dto.Email" Label="이메일" InputType="InputType.Email" />
                </MudItem>

                @* 세무 정보 *@
                <MudItem xs="12" Class="mt-2">
                    <MudText Typo="Typo.subtitle1" Class="fw-bold mb-1">세무 정보</MudText>
                    <MudDivider />
                </MudItem>
                <MudItem xs="12" md="6">
                    <MudSelect @bind-Value="dto.ServiceType" Label="서비스 유형" T="string" Clearable="true">
                        @foreach (var t in ClientService.ServiceTypes)
                        {
                            <MudSelectItem Value="@t">@t</MudSelectItem>
                        }
                    </MudSelect>
                </MudItem>
                <MudItem xs="12" md="6">
                    <MudSelect @bind-Value="dto.TaxType" Label="세금 유형" T="string" Clearable="true">
                        @foreach (var t in ClientService.TaxTypes)
                        {
                            <MudSelectItem Value="@t">@t</MudSelectItem>
                        }
                    </MudSelect>
                </MudItem>

                @* 관리 정보 *@
                <MudItem xs="12" Class="mt-2">
                    <MudText Typo="Typo.subtitle1" Class="fw-bold mb-1">관리 정보</MudText>
                    <MudDivider />
                </MudItem>
                <MudItem xs="12" md="6">
                    <MudSelect @bind-Value="dto.Status" Label="상태 *" T="string" Required="true">
                        <MudSelectItem Value="@("active")">활성</MudSelectItem>
                        <MudSelectItem Value="@("inactive")">비활성</MudSelectItem>
                    </MudSelect>
                </MudItem>
                <MudItem xs="12" md="6">
                    <MudSelect @bind-Value="dto.Source" Label="유입 경로" T="string" Clearable="true">
                        @foreach (var s in ClientService.Sources)
                        {
                            <MudSelectItem Value="@s">@s</MudSelectItem>
                        }
                    </MudSelect>
                </MudItem>
                <MudItem xs="12">
                    <MudTextField @bind-Value="dto.Memo" Label="메모"
                                  Lines="4" AutoGrow="true"
                                  Placeholder="상담 배경, 특이사항, 중요 날짜 등 자유롭게 기록하세요" />
                </MudItem>

                @* 저장 버튼 *@
                <MudItem xs="12" Class="d-flex gap-2 mt-2">
                    <MudButton Variant="Variant.Filled" Color="Color.Primary"
                               StartIcon="@Icons.Material.Filled.Save"
                               OnClick="@SaveAsync" Disabled="@isSaving">
                        @(isSaving ? "저장 중..." : "저장")
                    </MudButton>
                    <MudButton Variant="Variant.Outlined" Href="/taxbaik/admin/clients">
                        취소
                    </MudButton>
                </MudItem>
            </MudGrid>
        </MudForm>
    }
</MudPaper>

@code {
    [Parameter] public int? Id { get; set; }

    private MudForm form = null!;
    private CreateClientDto dto = new() { Status = "active" };
    private bool isValid;
    private bool isLoading = true;
    private bool isSaving;

    protected override async Task OnInitializedAsync()
    {
        if (Id.HasValue)
        {
            try
            {
                var client = await ClientClient.GetByIdAsync(Id.Value);
                if (client is null)
                {
                    Snackbar.Add("고객을 찾을 수 없습니다.", Severity.Error);
                    Navigation.NavigateTo("/taxbaik/admin/clients");
                    return;
                }
                dto = new CreateClientDto
                {
                    Name = client.Name,
                    CompanyName = client.CompanyName,
                    Phone = client.Phone,
                    Email = client.Email,
                    ServiceType = client.ServiceType,
                    TaxType = client.TaxType,
                    Status = client.Status,
                    Source = client.Source,
                    Memo = client.Memo
                };
            }
            catch (Exception ex)
            {
                Snackbar.Add($"오류: {ex.Message}", Severity.Error);
                Navigation.NavigateTo("/taxbaik/admin/clients");
                return;
            }
        }
        isLoading = false;
    }

    private async Task SaveAsync()
    {
        await form.Validate();
        if (!isValid) return;

        isSaving = true;
        try
        {
            if (Id.HasValue)
            {
                var result = await ClientClient.UpdateAsync(Id.Value, dto);
                if (result != null)
                    Snackbar.Add("고객 정보가 수정되었습니다.", Severity.Success);
                else
                    Snackbar.Add("수정에 실패했습니다.", Severity.Error);
            }
            else
            {
                var result = await ClientClient.CreateAsync(dto);
                if (result != null)
                    Snackbar.Add("고객이 등록되었습니다.", Severity.Success);
                else
                    Snackbar.Add("등록에 실패했습니다.", Severity.Error);
            }
            Navigation.NavigateTo("/taxbaik/admin/clients");
        }
        catch (Exception ex)
        {
            Snackbar.Add($"저장 실패: {ex.Message}", Severity.Error);
        }
        finally
        {
            isSaving = false;
        }
    }
}