@page "/users"
@attribute [Authorize]
@inject HttpClient Http

<PageTitle>QuantEngine - 사용자 관리</PageTitle>

<!-- Page Header -->
<div class="mb-6">
    <MudText Typo="Typo.h4" Class="mb-2">사용자 관리</MudText>
    <MudText Typo="Typo.body1" Class="text-muted">시스템 사용자 및 권한 관리</MudText>
</div>

<!-- Action Bar -->
<div class="d-flex justify-content-between align-items-center mb-4">
    <MudTextField @bind-Value="SearchQuery" Placeholder="사용자 검색..."
                  StartAdornment="@Icons.Material.Filled.Search"
                  Style="width: 300px;" />
    <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="OpenAddUserDialog">
        <MudIcon Icon="@Icons.Material.Filled.Add" Class="mr-2" />
        새 사용자 추가
    </MudButton>
</div>

<!-- Users Table -->
<MudPaper Class="pa-4" Elevation="1">
    @if (Users.Count == 0)
    {
        <MudAlert Severity="Severity.Info">사용자가 없습니다.</MudAlert>
    }
    else
    {
        <MudTable Items="@FilteredUsers" Dense="true" Hover="true" Striped="true">
            <HeaderContent>
                <MudTh>이름</MudTh>
                <MudTh>이메일</MudTh>
                <MudTh>역할</MudTh>
                <MudTh>상태</MudTh>
                <MudTh>가입일</MudTh>
                <MudTh>작업</MudTh>
            </HeaderContent>
            <RowTemplate>
                <MudTd DataLabel="Name">
                    <div class="d-flex align-items-center gap-2">
                        <MudAvatar Size="Size.Small" Color="Color.Primary">@context.Name[0]</MudAvatar>
                        <MudText Typo="Typo.body2">@context.Name</MudText>
                    </div>
                </MudTd>
                <MudTd DataLabel="Email">
                    <MudText Typo="Typo.body2">@context.Email</MudText>
                </MudTd>
                <MudTd DataLabel="Role">
                    <MudChip T="string" Label="true" Size="Size.Small"
                             Color="@(context.Role == "Admin" ? Color.Primary : Color.Default)"
                             Variant="Variant.Filled">
                        @context.Role
                    </MudChip>
                </MudTd>
                <MudTd DataLabel="Status">
                    <MudChip T="string" Label="true" Size="Size.Small"
                             Color="@(context.IsActive ? Color.Success : Color.Warning)"
                             Variant="Variant.Filled">
                        @(context.IsActive ? "활성" : "비활성")
                    </MudChip>
                </MudTd>
                <MudTd DataLabel="Joined">
                    <MudText Typo="Typo.body2">@context.CreatedDate.ToString("yyyy-MM-dd")</MudText>
                </MudTd>
                <MudTd DataLabel="Actions">
                    <MudButton Variant="Variant.Text" Size="Size.Small" Color="Color.Primary" OnClick="@(() => EditUser(context))">편집</MudButton>
                    <MudButton Variant="Variant.Text" Size="Size.Small" Color="Color.Error" OnClick="@(() => DeleteUser(context))">삭제</MudButton>
                </MudTd>
            </RowTemplate>
        </MudTable>
    }
</MudPaper>

@code {
    private List<UserModel> Users = new();
    private string SearchQuery = "";

    private IEnumerable<UserModel> FilteredUsers
    {
        get => string.IsNullOrEmpty(SearchQuery)
            ? Users
            : Users.Where(u => u.Name.Contains(SearchQuery, StringComparison.OrdinalIgnoreCase) ||
                              u.Email.Contains(SearchQuery, StringComparison.OrdinalIgnoreCase));
    }

    protected override async Task OnInitializedAsync()
    {
        await LoadUsers();
    }

    private async Task LoadUsers()
    {
        try
        {
            Users = new List<UserModel>
            {
                new UserModel
                {
                    Id = "1",
                    Name = "admin",
                    Email = "admin@quantengine.local",
                    Role = "Admin",
                    IsActive = true,
                    CreatedDate = DateTime.Now.AddMonths(-6)
                },
                new UserModel
                {
                    Id = "2",
                    Name = "user1",
                    Email = "user1@example.com",
                    Role = "Viewer",
                    IsActive = true,
                    CreatedDate = DateTime.Now.AddMonths(-3)
                },
                new UserModel
                {
                    Id = "3",
                    Name = "user2",
                    Email = "user2@example.com",
                    Role = "Operator",
                    IsActive = true,
                    CreatedDate = DateTime.Now.AddMonths(-1)
                }
            };
        }
        catch
        {
            // Handle error
        }
    }

    private async Task OpenAddUserDialog()
    {
        // Dialog implementation would go here
        await Task.CompletedTask;
    }

    private async Task EditUser(UserModel user)
    {
        // Edit dialog implementation
        await Task.CompletedTask;
    }

    private async Task DeleteUser(UserModel user)
    {
        // Delete confirmation and implementation
        await Task.CompletedTask;
    }

    private class UserModel
    {
        public string Id { get; set; }
        public string Name { get; set; }
        public string Email { get; set; }
        public string Role { get; set; }
        public bool IsActive { get; set; }
        public DateTime CreatedDate { get; set; }
    }
}