BlazorFrontend/Components/Pages/Home.razor

@page "/"
@using BlazorFrontend.Services
@using LibraryManagement.Shared.Models
@using Microsoft.AspNetCore.Components.Authorization
@inject LibraryApiClient ApiClient
@inject AuthenticationStateProvider AuthStateProvider
@inject NavigationManager Navigation

<PageTitle>Dashboard</PageTitle>

<div class="mb-10 animate-in fade-in slide-in-from-top-4 duration-500">
    <h1 class="text-3xl font-extrabold tracking-tight text-mystic-900 border-b border-mystic-100 pb-4 mb-2">Welcome Back</h1>
    <p class="text-mystic-500 font-medium">Here's what's happening with the library today.</p>
</div>

@if (_isLoading)
{
    <div class="flex items-center justify-center min-h-[400px]">
        <div class="animate-spin rounded-full h-12 w-12 border-b-2 border-mystic-900"></div>
    </div>
}
else
{
    <AuthorizeView>
        <Authorized>
            <!-- Loyalty Banner -->
            @if (_loyaltyAccount != null)
            {
                <a href="Rewards" class="block group mb-10 animate-in fade-in zoom-in-95 duration-700">
                    <div class="bg-gradient-to-br from-mystic-900 to-[#5a5669] rounded-3xl p-8 text-white shadow-xl relative overflow-hidden transition-all duration-500 hover:shadow-2xl hover:translate-y-[-4px] border border-white/5">
                        <div class="relative z-10 flex flex-col md:flex-row md:items-center justify-between gap-6">
                            <div>
                                <p class="text-mystic-200 text-xs font-bold uppercase tracking-[0.2em] mb-2 opacity-80">Your Loyalty Status</p>
                                <div class="flex items-baseline gap-3">
                                    <h2 class="text-5xl font-black tracking-tighter">@_loyaltyAccount.CurrentBalance.ToString("N0")</h2>
                                    <span class="text-mystic-300 font-bold tracking-wide text-lg">Points Earned</span>
                                </div>
                                <p class="text-[10px] text-white/40 mt-3 uppercase tracking-widest font-bold">Member Account: Verified</p>
                            </div>
                            <div class="flex items-center gap-6">
                                <div class="flex flex-col items-end">
                                    <span class="text-[10px] text-mystic-300 font-bold uppercase tracking-widest mb-1 opacity-60">Current Tier</span>
                                    <div class="inline-flex items-center gap-3 bg-white/10 backdrop-blur-md px-6 py-3 rounded-2xl border border-white/10 shadow-xl">
                                        <div class="w-2 h-2 rounded-full bg-emerald-400 animate-pulse"></div>
                                        <span class="font-black text-xl tracking-tight">@_loyaltyAccount.Tier</span>
                                    </div>
                                </div>
                                <div class="w-12 h-12 bg-white/10 rounded-2xl flex items-center justify-center group-hover:bg-white/20 transition-all duration-300">
                                    <svg class="w-6 h-6 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2.5" d="M9 5l7 7-7 7"></path></svg>
                                </div>
                            </div>
                        </div>
                        <!-- Decorative Elements -->
                        <div class="absolute -right-20 -bottom-20 w-64 h-64 bg-white/5 rounded-full blur-3xl transform group-hover:scale-125 transition-transform duration-1000"></div>
                        <div class="absolute -left-20 -top-20 w-48 h-48 bg-mystic-100/5 rounded-full blur-2xl transform group-hover:scale-110 transition-transform duration-1000"></div>
                    </div>
                </a>
            }
        </Authorized>
    </AuthorizeView>

    <!-- Stats Grid -->
    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6 mb-12">
        <div class="card p-6 flex flex-col gap-3 group hover:border-mystic-300 transition-all duration-300">
            <div class="flex items-center justify-between">
                <div class="p-2 bg-mystic-50 rounded-lg group-hover:bg-mystic-100 transition-colors">
                    <svg class="w-5 h-5 text-mystic-600" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18 18.246 18.477 16.5 18c-1.746 0-3.332.477-4.5 1.253"></path></svg>
                </div>
                <span class="text-[10px] font-bold text-mystic-400 uppercase tracking-widest">Books</span>
            </div>
            <div>
                <div class="text-3xl font-bold text-mystic-900">@_totalBooks</div>
                <div class="text-xs text-mystic-500 mt-1 font-medium italic">Total in catalog</div>
            </div>
        </div>

        <div class="card p-6 flex flex-col gap-3 group hover:border-mystic-300 transition-all duration-300">
            <div class="flex items-center justify-between">
                <div class="p-2 bg-emerald-50 rounded-lg group-hover:bg-emerald-100 transition-colors">
                    <svg class="w-5 h-5 text-emerald-600" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 7h12m0 0l-4-4m4 4l-4 4m0 6H4m0 0l4 4m-4-4l4-4"></path></svg>
                </div>
                <span class="text-[10px] font-bold text-mystic-400 uppercase tracking-widest">Active Loans</span>
            </div>
            <div>
                <div class="text-3xl font-bold text-mystic-900">@_activeLoans</div>
                <div class="text-xs text-mystic-500 mt-1 font-medium italic">Checking out right now</div>
            </div>
        </div>

        <div class="card p-6 flex flex-col gap-3 group hover:border-mystic-300 border-l-4 border-l-rose-500 transition-all duration-300">
            <div class="flex items-center justify-between">
                <div class="p-2 bg-rose-50 rounded-lg group-hover:bg-rose-100 transition-colors">
                    <svg class="w-5 h-5 text-rose-600" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"></path></svg>
                </div>
                <span class="text-[10px] font-bold text-mystic-400 uppercase tracking-widest text-rose-500">Overdue</span>
            </div>
            <div>
                <div class="text-3xl font-bold text-rose-600">@_overdueLoans</div>
                <div class="text-xs text-rose-500 mt-1 font-medium italic">Require attention</div>
            </div>
        </div>

        <div class="card p-6 flex flex-col gap-3 group hover:border-mystic-300 transition-all duration-300">
            <div class="flex items-center justify-between">
                <div class="p-2 bg-blue-50 rounded-lg group-hover:bg-blue-100 transition-colors">
                    <svg class="w-5 h-5 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17 20h5v-2a3 3 0 00-5.356-1.857M17 20H7m10 0v-2c0-.656-.126-1.283-.356-1.857M7 20H2v-2a3 3 0 015.356-1.857M7 20v-2c0-.656.126-1.283.356-1.857m0 0a5.002 5.002 0 019.288 0M15 7a3 3 0 11-6 0 3 3 0 016 0zm6 3a2 2 0 11-4 0 2 2 0 014 0zM7 10a2 2 0 11-4 0 2 2 0 014 0z"></path></svg>
                </div>
                <span class="text-[10px] font-bold text-mystic-400 uppercase tracking-widest">Active Members</span>
            </div>
            <div>
                <div class="text-3xl font-bold text-mystic-900">@_totalMembers</div>
                <div class="text-xs text-mystic-500 mt-1 font-medium italic">In the community</div>
            </div>
        </div>
    </div>

    <!-- Recent Arrivals -->
    @if (_recentBooks.Any())
    {
        <div class="mb-12 animate-in fade-in slide-in-from-bottom-6 duration-700 delay-150">
            <div class="flex items-center justify-between mb-8">
                <h2 class="text-2xl font-bold text-mystic-900 tracking-tight">Recent Arrivals</h2>
                <a href="Books" class="text-sm font-bold text-mystic-500 hover:text-mystic-900 flex items-center group">
                    Browse All 
                    <svg class="w-4 h-4 ml-1 transition-transform group-hover:translate-x-1" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14 5l7 7m0 0l-7 7m7-7H3"></path></svg>
                </a>
            </div>
            
            <div class="grid grid-cols-2 md:grid-cols-3 lg:grid-cols-6 gap-6">
                @foreach (var book in _recentBooks)
                {
                    <div class="group cursor-pointer">
                        <a href="Books">
                            <div class="aspect-[2/3] w-full bg-mystic-100 rounded-xl mb-3 flex items-center justify-center text-mystic-300 group-hover:shadow-lg transition-all duration-300 relative overflow-hidden">
                                <svg class="w-10 h-10" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18 18.246 18.477 16.5 18c-1.746 0-3.332.477-4.5 1.253"></path></svg>
                                @if (book.AvailableCopies <= 0)
                                {
                                    <div class="absolute inset-0 bg-mystic-900/40 backdrop-blur-[1px] flex items-center justify-center">
                                        <span class="bg-white text-mystic-900 text-[8px] font-bold uppercase px-2 py-1 rounded">Out</span>
                                    </div>
                                }
                            </div>
                            <h3 class="text-xs font-bold text-mystic-900 truncate group-hover:text-mystic-600 transition-colors">@book.Title</h3>
                            <p class="text-[10px] text-mystic-500 truncate mt-0.5 font-medium">@book.Author</p>
                        </a>
                    </div>
                }
            </div>
        </div>
    }

    <!-- Quick Actions -->
    <div class="grid grid-cols-1 md:grid-cols-2 gap-8 animate-in fade-in slide-in-from-bottom-8 duration-700 delay-300">
        <div class="bg-mystic-900 text-white rounded-3xl p-8 flex flex-col justify-between overflow-hidden relative group">
            <div class="relative z-10">
                <h2 class="text-2xl font-bold mb-2">Explore the Library</h2>
                <p class="text-mystic-400 text-sm max-w-[280px]">Access thousands of books across all categories with a premium member account.</p>
            </div>
            <div class="mt-8 relative z-10">
                <a href="Books" class="inline-flex items-center bg-white text-mystic-900 px-6 py-2.5 rounded-full text-sm font-bold hover:bg-mystic-100 transition-colors">
                    View Catalog
                </a>
            </div>
            <svg class="absolute bottom-0 right-0 w-48 h-48 text-mystic-800 -mb-12 -mr-12 opacity-50 transition-transform group-hover:scale-110" fill="currentColor" viewBox="0 0 24 24"><path d="M4 19.5v-15A2.5 2.5 0 0 1 6.5 2H20v20H6.5a2.5 2.5 0 0 1 0-5H20"/></svg>
        </div>

        <div class="bg-mystic-50 rounded-3xl p-8 flex flex-col justify-between group border border-mystic-100">
            <div>
                <h2 class="text-2xl font-bold text-mystic-900 mb-2">My Current Loans</h2>
                <p class="text-mystic-600 text-sm max-w-[280px]">Don't forget to return your books on time to avoid late fees.</p>
            </div>
            <div class="mt-8">
                <a href="Borrowings" class="inline-flex items-center text-mystic-900 px-6 py-2.5 rounded-full text-sm font-bold border-2 border-mystic-900 hover:bg-mystic-900 hover:text-white transition-all">
                    Manage My Loans
                </a>
            </div>
        </div>
    </div>
}

@code {
    private int _totalBooks = 0;
    private int _activeLoans = 0;
    private int _overdueLoans = 0;
    private int _totalMembers = 0;
    private IEnumerable<BookDto> _recentBooks = Enumerable.Empty<BookDto>();
    private LoyaltyAccountDto? _loyaltyAccount;
    private bool _isLoading = true;

    protected override async Task OnInitializedAsync()
    {
        try
        {
            // 1. Basic Stats (Public)
            var books = await ApiClient.GetBooksAsync();
            _totalBooks = books.Count();
            _recentBooks = books.Take(6);

            // 2. Personal/Authenticated Stats
            var authState = await AuthStateProvider.GetAuthenticationStateAsync();
            var user = authState.User;

            if (user.Identity?.IsAuthenticated == true)
            {
                // Fetch borrowings
                try
                {
                    var borrowings = await ApiClient.GetMyBorrowingsAsync();
                    _activeLoans = borrowings.Count(b => b.Status == "Borrowed");
                    _overdueLoans = borrowings.Count(b => b.Status == "Overdue" || (b.Status == "Borrowed" && b.DueDate < DateTime.UtcNow));
                }
                catch { }

                // Fetch loyalty
                try
                {
                    _loyaltyAccount = await ApiClient.GetMyLoyaltyAccountAsync();
                }
                catch { }

                // 3. Librarian Only Stats
                if (user.IsInRole("Librarian"))
                {
                    try
                    {
                        var members = await ApiClient.GetUsersAsync();
                        _totalMembers = members.Count();
                    }
                    catch { }
                }
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine("Error loading dashboard data: " + ex.Message);
        }
        finally
        {
            _isLoading = false;
        }
    }
}