@inject ILogger<SystemTab> Logger

<div class="settings-section">
    <h4>
        <i class="fas fa-server text-primary me-2"></i>
        Configurazione Sistema
    </h4>
    <p class="text-muted">
        Impostazioni generali del sistema Data Coupler.
    </p>

    <div class="row">
        <div class="col-md-6">
            <div class="card">
                <div class="card-header">
                    <h5 class="card-title mb-0">
                        <i class="fas fa-database text-info me-2"></i>
                        Database
                    </h5>
                </div>
                <div class="card-body">
                    <p class="card-text">Configurazione del database principale.</p>
                    
                    <div class="mb-3">
                        <label class="form-label">Percorso Database:</label>
                        <input type="text" class="form-control" value="@GetDatabasePath()" readonly>
                        <div class="form-text">Percorso del database SQLite di sistema</div>
                    </div>

                    <div class="mb-3">
                        <label class="form-label">Statistiche Database:</label>
                        <div class="row">
                            <div class="col-6">
                                <div class="text-center p-2 bg-light rounded">
                                    <div class="h5 mb-1">@databaseStats.TotalProfiles</div>
                                    <small class="text-muted">Profili</small>
                                </div>
                            </div>
                            <div class="col-6">
                                <div class="text-center p-2 bg-light rounded">
                                    <div class="h5 mb-1">@databaseStats.TotalCredentials</div>
                                    <small class="text-muted">Credenziali</small>
                                </div>
                            </div>
                        </div>
                    </div>

                    <button class="btn btn-outline-primary btn-sm" @onclick="RefreshStats">
                        <i class="fas fa-refresh me-1"></i>
                        Aggiorna Statistiche
                    </button>
                </div>
            </div>
        </div>

        <div class="col-md-6">
            <div class="card">
                <div class="card-header">
                    <h5 class="card-title mb-0">
                        <i class="fas fa-cogs text-warning me-2"></i>
                        Performance
                    </h5>
                </div>
                <div class="card-body">
                    <p class="card-text">Impostazioni per ottimizzare le performance.</p>
                    
                    <div class="mb-3">
                        <label for="batchSize" class="form-label">Dimensione Batch Predefinita:</label>
                        <input type="number" class="form-control" id="batchSize" @bind="systemSettings.DefaultBatchSize" 
                               min="1" max="1000" step="1">
                        <div class="form-text">Numero di record da processare per volta</div>
                    </div>

                    <div class="mb-3">
                        <label for="timeout" class="form-label">Timeout Connessioni (secondi):</label>
                        <input type="number" class="form-control" id="timeout" @bind="systemSettings.DefaultTimeout" 
                               min="10" max="300" step="5">
                    </div>

                    <button class="btn btn-primary btn-sm" @onclick="SaveSystemSettings">
                        <i class="fas fa-save me-1"></i>
                        Salva Impostazioni
                    </button>
                </div>
            </div>
        </div>
    </div>

    <div class="row mt-4">
        <div class="col-12">
            <div class="card">
                <div class="card-header">
                    <h5 class="card-title mb-0">
                        <i class="fas fa-info-circle text-success me-2"></i>
                        Informazioni Sistema
                    </h5>
                </div>
                <div class="card-body">
                    <div class="row">
                        <div class="col-md-3">
                            <strong>Versione Applicazione:</strong><br>
                            <span class="badge bg-primary">1.0.0</span>
                        </div>
                        <div class="col-md-3">
                            <strong>Framework:</strong><br>
                            <span class="badge bg-info">.NET 9.0</span>
                        </div>
                        <div class="col-md-3">
                            <strong>Sistema Operativo:</strong><br>
                            <span class="badge bg-secondary">@Environment.OSVersion.Platform</span>
                        </div>
                        <div class="col-md-3">
                            <strong>Memoria Utilizzata:</strong><br>
                            <span class="badge bg-warning">@GetMemoryUsage()</span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

@code {
    [Parameter] public EventCallback<(string message, string type)> OnShowToast { get; set; }

    private DatabaseStats databaseStats = new();
    private SystemSettings systemSettings = new()
    {
        DefaultBatchSize = 200,
        DefaultTimeout = 30
    };

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

    private string GetDatabasePath()
    {
        // Implementazione semplificata - in un'implementazione reale
        // questo dovrebbe venire dalla configurazione
        var documentsPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
        return Path.Combine(documentsPath, "DataCoupler", "credentials.db");
    }

    private string GetMemoryUsage()
    {
        var workingSet = Environment.WorkingSet;
        return $"{workingSet / 1024 / 1024:F1} MB";
    }

    private async Task RefreshStats()
    {
        try
        {
            // Implementazione semplificata - in produzione collegarsi al database
            databaseStats = new DatabaseStats
            {
                TotalProfiles = Random.Shared.Next(5, 50),
                TotalCredentials = Random.Shared.Next(3, 20)
            };

            await OnShowToast.InvokeAsync(("Statistiche aggiornate", "success"));
            StateHasChanged();
        }
        catch (Exception ex)
        {
            Logger.LogError(ex, "Errore aggiornamento statistiche");
            await OnShowToast.InvokeAsync(("Errore aggiornamento statistiche", "error"));
        }
    }

    private async Task SaveSystemSettings()
    {
        try
        {
            // Implementazione semplificata - in produzione salvare nel database o file di configurazione
            await Task.Delay(500); // Simula operazione di salvataggio

            await OnShowToast.InvokeAsync(("Impostazioni salvate con successo", "success"));
        }
        catch (Exception ex)
        {
            Logger.LogError(ex, "Errore salvataggio impostazioni");
            await OnShowToast.InvokeAsync(("Errore salvataggio impostazioni", "error"));
        }
    }

    private class DatabaseStats
    {
        public int TotalProfiles { get; set; }
        public int TotalCredentials { get; set; }
    }

    private class SystemSettings
    {
        public int DefaultBatchSize { get; set; }
        public int DefaultTimeout { get; set; }
    }
}