Mimante/Mimante/Pages/Statistics.razor

@page "/statistics"
@inject StatsService StatsService
@inject IJSRuntime JSRuntime

<PageTitle>Statistiche - AutoBidder</PageTitle>

<div class="statistics-container animate-fade-in p-4">
    <div class="d-flex align-items-center justify-content-between mb-4 animate-fade-in-down">
        <div class="d-flex align-items-center">
            <i class="bi bi-bar-chart-fill text-primary me-3" style="font-size: 2.5rem;"></i>
            <h2 class="mb-0 fw-bold">Statistiche Prodotti</h2>
        </div>
        <button class="btn btn-primary hover-lift" @onclick="RefreshStats" disabled="@isLoading">
            @if (isLoading)
            {
                <span class="spinner-border spinner-border-sm me-2"></span>
            }
            else
            {
                <i class="bi bi-arrow-clockwise me-1"></i>
            }
            Aggiorna
        </button>
    </div>
    
    @if (errorMessage != null)
    {
        <div class="alert alert-danger border-0 shadow-sm animate-shake mb-4">
            <div class="d-flex align-items-center">
                <i class="bi bi-exclamation-triangle-fill me-3" style="font-size: 2rem;"></i>
                <div>
                    <h5 class="mb-1">Errore nel caricamento statistiche</h5>
                    <p class="mb-0">@errorMessage</p>
                </div>
            </div>
        </div>
    }
    
    @if (stats != null && stats.Any())
    {
        <div class="card shadow-hover animate-fade-in-up delay-100">
            <div class="card-body p-0">
                <div class="table-responsive">
                    <table class="table table-striped table-hover mb-0">
                        <thead>
                            <tr class="bg-primary text-white">
                                <th><i class="bi bi-box-seam me-2"></i>Prodotto</th>
                                <th><i class="bi bi-eye me-2"></i>Aste Viste</th>
                                <th><i class="bi bi-hand-index me-2"></i>Puntate Medie</th>
                                <th><i class="bi bi-currency-euro me-2"></i>Prezzo Medio</th>
                                <th><i class="bi bi-clock-history me-2"></i>Ultima Vista</th>
                            </tr>
                        </thead>
                        <tbody>
                            @foreach (var stat in stats.OrderByDescending(s => s.LastSeen))
                            {
                                <tr class="transition-all">
                                    <td class="fw-semibold">@stat.ProductName</td>
                                    <td>
                                        <span class="badge bg-info">@stat.TotalAuctions</span>
                                    </td>
                                    <td>
                                        <span class="badge bg-secondary">@stat.AverageBidsUsed.ToString("F1")</span>
                                    </td>
                                    <td class="fw-bold text-success">
                                        €@stat.AverageFinalPrice.ToString("F2")
                                    </td>
                                    <td class="text-muted">
                                        <i class="bi bi-calendar3"></i> @stat.LastSeen.ToString("dd/MM/yyyy HH:mm")
                                    </td>
                                </tr>
                            }
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
        
        <div class="stats-summary mt-4 animate-fade-in-up delay-200">
            <div class="row g-3">
                <div class="col-md-4">
                    <div class="card border-0 shadow-sm text-center hover-lift">
                        <div class="card-body">
                            <i class="bi bi-bar-chart-line-fill text-primary" style="font-size: 2rem;"></i>
                            <h4 class="mt-3 mb-1 fw-bold">@stats.Count</h4>
                            <p class="text-muted mb-0">Prodotti Tracciati</p>
                        </div>
                    </div>
                </div>
                <div class="col-md-4">
                    <div class="card border-0 shadow-sm text-center hover-lift">
                        <div class="card-body">
                            <i class="bi bi-trophy-fill text-warning" style="font-size: 2rem;"></i>
                            <h4 class="mt-3 mb-1 fw-bold">@stats.Sum(s => s.TotalAuctions)</h4>
                            <p class="text-muted mb-0">Aste Totali</p>
                        </div>
                    </div>
                </div>
                <div class="col-md-4">
                    <div class="card border-0 shadow-sm text-center hover-lift">
                        <div class="card-body">
                            <i class="bi bi-currency-euro text-success" style="font-size: 2rem;"></i>
                            <h4 class="mt-3 mb-1 fw-bold">€@stats.Average(s => s.AverageFinalPrice).ToString("F2")</h4>
                            <p class="text-muted mb-0">Prezzo Medio</p>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    }
    else if (!isLoading && errorMessage == null)
    {
        <div class="alert alert-info border-0 shadow-sm animate-scale-in">
            <div class="d-flex align-items-center">
                <i class="bi bi-info-circle-fill me-3" style="font-size: 2rem;"></i>
                <div>
                    <h5 class="mb-1">Nessuna statistica disponibile</h5>
                    <p class="mb-0">Le statistiche verranno raccolte automaticamente durante il monitoraggio delle aste.</p>
                </div>
            </div>
        </div>
    }
    
    @if (isLoading)
    {
        <div class="text-center py-5">
            <div class="spinner-border text-primary" style="width: 3rem; height: 3rem;" role="status">
                <span class="visually-hidden">Caricamento...</span>
            </div>
            <p class="mt-3 text-muted">Caricamento statistiche...</p>
        </div>
    }
</div>

<style>
    .statistics-container {
        max-width: 1400px;
        margin: 0 auto;
    }
    
    .stats-summary .card {
        border-radius: 12px;
        transition: all 0.3s ease;
    }
    
    .stats-summary .card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15) !important;
    }
    
    .table thead {
        position: sticky;
        top: 0;
        z-index: 10;
    }
    
    @@keyframes shake {
        0%, 100% { transform: translateX(0); }
        10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
        20%, 40%, 60%, 80% { transform: translateX(5px); }
    }
    
    .animate-shake {
        animation: shake 0.5s ease-in-out;
    }
</style>

@code {
    private List<ProductStat>? stats;
    private string? errorMessage;
    private bool isLoading = false;

    protected override async Task OnInitializedAsync()
    {
        try
        {
            await RefreshStats();
        }
        catch (Exception ex)
        {
            errorMessage = $"Errore inizializzazione: {ex.Message}";
            stats = new List<ProductStat>();
            Console.WriteLine($"[ERROR] Statistics OnInitializedAsync: {ex}");
        }
    }

    private async Task RefreshStats()
    {
        try
        {
            isLoading = true;
            errorMessage = null;
            StateHasChanged();
            
            // Tentativo caricamento con timeout
            var cts = new CancellationTokenSource(TimeSpan.FromSeconds(10));
            stats = await StatsService.GetAllStatsAsync();
            
            if (stats == null)
            {
                stats = new List<ProductStat>();
                errorMessage = "Nessuna statistica disponibile. Il database potrebbe non essere inizializzato.";
            }
        }
        catch (TaskCanceledException)
        {
            errorMessage = "Timeout durante caricamento statistiche. Riprova più tardi.";
            stats = new List<ProductStat>();
        }
        catch (Exception ex)
        {
            errorMessage = $"Si è verificato un errore: {ex.Message}";
            stats = new List<ProductStat>();
            Console.WriteLine($"[ERROR] Statistics RefreshStats: {ex}");
            Console.WriteLine($"[ERROR] Stack trace: {ex.StackTrace}");
        }
        finally
        {
            isLoading = false;
            StateHasChanged();
        }
    }
}