@using OnProfNext.Client.Services
@using OnProfNext.Shared.Models
@using OnProfNext.Shared.Models.DTOs
@inject ProjectApiService ProjectService
@inject UserApiService UserService

<div class="modal fade @(ShowModal ? "show d-block" : "")" tabindex="-1" style="background-color: rgba(0,0,0,0.5);">
    <div class="modal-dialog modal-dialog-centered" @onclick:stopPropagation>
        <div class="modal-content border-0 shadow">
            <div class="modal-header bg-primary text-white">
                <h5 class="modal-title">Neues Projekt anlegen</h5>
                <button type="button" class="btn-close btn-close-white" @onclick="CloseModal"></button>
            </div>
            <div class="modal-body">
                @if (users == null)
                {
                    <div class="text-center mt-3">
                        <div class="spinner-border text-primary" role="status"></div>
                        <p class="mt-2 text-secondary">Benutzer werden geladen...</p>
                    </div>
                    @if (!string.IsNullOrEmpty(errorMessage))
                    {
                        <div class="alert alert-danger mt-3">@errorMessage</div>
                    }
                }
                else
                {
                    <EditForm Model="NewProject" OnValidSubmit="CreateProjectAsync">
                        <DataAnnotationsValidator />
                        <ValidationSummary />

                        <div class="mb-3">
                            <label class="form-label">Projektname</label>
                            <InputText class="form-control" @bind-Value="NewProject.ProjectName" />
                        </div>

                        <div class="mb-3">
                            <label class="form-label">Beschreibung</label>
                            <InputTextArea class="form-control" rows="3" @bind-Value="NewProject.Description" />
                        </div>

                        <div class="mb-3">
                            <label class="form-label">Projektleiter</label>
                            <InputText class="form-control mb-2" @bind-Value="SearchText" placeholder="Projektleiter suchen..." />
                            <div class="list-group" style="max-height: 150px; overflow-y: auto;">
                                @if (!FilteredUsers.Any())
                                {
                                    <div class="list-group-item text-muted">Keine Benutzer gefunden</div>
                                }
                                else
                                {
                                    @foreach (var user in FilteredUsers)
                                    {
                                        <label class="list-group-item">
                                            <input type="checkbox"
                                                   value="@user.Id"
                                                   checked="@(NewProject.ProjectManagerIds.Contains(user.Id))"
                                                   @onchange="@(e => ToggleProjectManager(user.Id, e.Value != null && (bool)e.Value))" />
                                            @user.FirstName @user.LastName (@user.Username)
                                        </label>
                                    }
                                }
                            </div>
                        </div>

                        <div class="mb-3">
                            <label class="form-label">Status</label>
                            <InputSelect class="form-select" @bind-Value="NewProject.Status">
                                <option value="Geplant">Geplant</option>
                                <option value="In Arbeit">In Arbeit</option>
                                <option value="Abgeschlossen">Abgeschlossen</option>
                            </InputSelect>
                        </div>

                        <div class="d-flex justify-content-end">
                            <button type="button" class="btn btn-secondary me-2" @onclick="CloseModal">Abbrechen</button>
                            <button type="submit" class="btn btn-success">Speichern</button>
                        </div>
                    </EditForm>
                }
            </div>
        </div>
    </div>
</div>

@code {
    [Parameter] public bool ShowModal { get; set; }
    [Parameter] public EventCallback<bool> ShowModalChanged { get; set; }
    [Parameter] public ProjectCreateDto NewProject { get; set; } = new();
    [Parameter] public EventCallback<ProjectCreateDto> OnProjectCreated { get; set; }
    [Parameter] public string SearchText { get; set; } = "";

    private List<User>? users;
    private string? errorMessage;

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

    private async Task LoadUsersAsync()
    {
        var userResult = await UserService.GetUsersAsync();
        Console.WriteLine($"UserService.GetUsersAsync result: Success={userResult.Success}, Data={userResult.Data?.Count}, Error={userResult.Error}");
        if (userResult.Success && userResult.Data != null)
        {
            users = userResult.Data;
        }
        else
        {
            errorMessage = userResult.Error ?? "Fehler beim Laden der Benutzer.";
        }
    }

    private IEnumerable<User> FilteredUsers => users is null || string.IsNullOrWhiteSpace(SearchText)
        ? Enumerable.Empty<User>()
        : users.Where(u => $"{u.FirstName} {u.LastName} {u.Username}"
            .Contains(SearchText, StringComparison.OrdinalIgnoreCase));

    private void CloseModal()
    {
        ShowModal = false;
        ShowModalChanged.InvokeAsync(ShowModal);
    }

    private void ToggleProjectManager(int userId, bool isChecked)
    {
        if (isChecked)
        {
            if (!NewProject.ProjectManagerIds.Contains(userId))
                NewProject.ProjectManagerIds.Add(userId);
        }
        else
        {
            NewProject.ProjectManagerIds.Remove(userId);
        }
    }

    private async Task CreateProjectAsync()
    {
        var result = await ProjectService.CreateProjectAsync(NewProject);
        if (result.Success)
        {
            await OnProjectCreated.InvokeAsync(NewProject);
            CloseModal();
        }
    }
}