@using SZUAbsolventenverein.Module.PremiumArea.Services
@using SZUAbsolventenverein.Module.PremiumArea.Models
@namespace SZUAbsolventenverein.Module.PremiumArea
@inherits ModuleBase
@inject IEngineerApplicationService ApplicationService
@inject NavigationManager NavManager
@inject Oqtane.Services.IUserService UserService

@if (Oqtane.Security.UserSecurity.IsAuthorized(PageState.User, RoleNames.Admin) || Oqtane.Security.UserSecurity.IsAuthorized(PageState.User, "Premium Member"))
{
    <h3>Ingenieur-Anträge</h3>

    @if (_applications == null)
    {
        <p>Prüfe Premium-Zugang...</p>
    }
    else if (_applications.Count == 0)
    {
        <div class="alert alert-warning">
            Keine Anträge gefunden.
        </div>
    }
    else
    {
        <div class="row">
            @foreach (var app in _applications)
            {
                <div class="col-md-4 mb-3">
                    <div class="card h-100">
                        <div class="card-body">
                            <div class="d-flex justify-content-between align-items-start">
                                <h5 class="card-title mb-0">@(string.IsNullOrEmpty(app.Title) ? "Ingenieur-Antrag" : app.Title)</h5>
                                @if (Oqtane.Security.UserSecurity.IsAuthorized(PageState.User, RoleNames.Admin))
                                {
                                    @if (_confirmDeleteId == app.ApplicationId)
                                    {
                                        <div class="d-flex gap-1">
                                            <button class="btn btn-danger btn-sm" @onclick="@(() => DeleteApp(app))" title="Bestätigen">
                                                <span class="oi oi-check"></span>
                                            </button>
                                            <button class="btn btn-secondary btn-sm" @onclick="@(() => _confirmDeleteId = -1)" title="Abbrechen">
                                                <span class="oi oi-x"></span>
                                            </button>
                                        </div>
                                    }
                                    else
                                    {
                                        <button class="btn btn-outline-danger btn-sm" @onclick="@(() => _confirmDeleteId = app.ApplicationId)" title="Antrag löschen">
                                            <span class="oi oi-trash"></span>
                                        </button>
                                    }
                                }
                            </div>
                            <h6 class="card-subtitle mb-2 text-muted mt-1">von @GetUserName(app.UserId)</h6>
                            @if (!string.IsNullOrEmpty(app.ShortDescription))
                            {
                                <p class="card-text">@app.ShortDescription</p>
                            }
                            <p class="card-text text-muted">
                                <small>
                                    <strong>Datum:</strong> @(app.ApprovedOn?.ToShortDateString() ?? app.CreatedOn.ToShortDateString())
                                </small>
                            </p>
                            <div class="d-flex gap-2">
                                <button class="btn btn-primary btn-sm" @onclick="@(async () => ShowDetail(app))">PDF ansehen</button>
                                <a href="@(PageState.Alias.Path == "" ? "" : "/" + PageState.Alias.Path)/api/file/download/@(app.FileId)/attach" target="_blank" class="btn btn-outline-secondary btn-sm">Herunterladen</a>
                                <button class="btn btn-outline-danger btn-sm" @onclick="@(() => InitReport(app))">Melden</button>
                            </div>
                        </div>
                    </div>
                </div>
            }
        </div>
    }
}
else
{
    <div class="alert alert-warning">
        Sie müssen Premium Kunde sein um diese Funktion zu nutzen.
    </div>
}

@if (_selectedApp != null)
{
    <div class="modal d-block" tabindex="-1">
        <div class="modal-dialog modal-lg">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title">Antrags-PDF</h5>
                    <button type="button" class="btn-close" @onclick="@(() => _selectedApp = null)"></button>
                </div>
                <div class="modal-body p-0">
                    <div style="min-height: 600px; height: 75vh;">
                        <iframe src="@(PageState.Alias.Path == "" ? "" : "/" + PageState.Alias.Path)/api/file/download/@(_selectedApp.FileId)" style="width: 100%; height: 100%; border: none;" allowfullscreen></iframe>
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" @onclick="@(() => _selectedApp = null)">Schließen</button>
                </div>
            </div>
        </div>
    </div>
    <div class="modal-backdrop fade show"></div>
}

@if (_reportApp != null)
{
    <div class="modal d-block" tabindex="-1">
        <div class="modal-dialog">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title">Antrag melden</h5>
                    <button type="button" class="btn-close" @onclick="@(() => _reportApp = null)"></button>
                </div>
                <div class="modal-body">
                    <p>Bitte geben Sie einen Grund an, warum Sie diesen Antrag melden (von @GetUserName(_reportApp.UserId)).</p>
                    <textarea class="form-control" rows="3" @bind="_reportReason" placeholder="Grund..."></textarea>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" @onclick="@(() => _reportApp = null)">Abbrechen</button>
                    <button type="button" class="btn btn-danger" @onclick="SubmitReport">Meldung absenden</button>
                </div>
            </div>
        </div>
    </div>
    <div class="modal-backdrop fade show"></div>
}

@code {
    public override SecurityAccessLevel SecurityAccessLevel => SecurityAccessLevel.View;

    private List<EngineerApplication> _applications;
    private EngineerApplication _selectedApp;
    private EngineerApplication _reportApp;
    private string _reportReason;
    private Dictionary<int, string> _userNames = new();
    private int _confirmDeleteId = -1;

    protected override async Task OnInitializedAsync()
    {
        try
        {
            var published = await ApplicationService.GetApplicationsAsync(ModuleState.ModuleId, "Published");
            var approved = await ApplicationService.GetApplicationsAsync(ModuleState.ModuleId, "Approved");

            _applications = new List<EngineerApplication>();
            if (published != null) _applications.AddRange(published);
            if (approved != null) _applications.AddRange(approved);

            _applications = _applications.GroupBy(a => a.ApplicationId).Select(g => g.First()).ToList();

            // Benutzernamen laden
            foreach (var userId in _applications.Select(a => a.UserId).Distinct())
            {
                try
                {
                    var user = await UserService.GetUserAsync(userId, ModuleState.SiteId);
                    _userNames[userId] = user?.DisplayName ?? $"Benutzer {userId}";
                }
                catch
                {
                    _userNames[userId] = $"Benutzer {userId}";
                }
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
            _applications = null;
        }
    }

    private void ShowDetail(EngineerApplication app)
    {
        _selectedApp = app;
    }

    private void InitReport(EngineerApplication app)
    {
        _reportApp = app;
        _reportReason = "";
    }

    private async Task SubmitReport()
    {
        if (_reportApp == null || string.IsNullOrWhiteSpace(_reportReason)) return;

        try
        {
            await ApplicationService.ReportApplicationAsync(_reportApp.ApplicationId, ModuleState.ModuleId, _reportReason);
            _reportApp = null;
            AddModuleMessage("Antrag erfolgreich gemeldet.", MessageType.Success);
        }
        catch (Exception ex)
        {
            AddModuleMessage("Fehler beim Melden: " + ex.Message, MessageType.Error);
        }
    }

    private async Task DeleteApp(EngineerApplication app)
    {
        try
        {
            await ApplicationService.DeleteApplicationAsync(app.ApplicationId, ModuleState.ModuleId);
            _applications.Remove(app);
            _confirmDeleteId = -1;
            AddModuleMessage("Antrag erfolgreich gelöscht.", MessageType.Success);
        }
        catch (Exception ex)
        {
            AddModuleMessage("Fehler beim Löschen: " + ex.Message, MessageType.Error);
            _confirmDeleteId = -1;
        }
    }

    private string GetUserName(int userId)
    {
        return _userNames.TryGetValue(userId, out var name) ? name : $"Benutzer {userId}";
    }

}