@namespace MidrandBooks.Components
@using Microsoft.AspNetCore.Components
@using MidrandBooks.Models

<style>
    .no-scrollbar::-webkit-scrollbar {
        display: none;
    }
    .no-scrollbar {
        -ms-overflow-style: none;
        scrollbar-width: none;
    }
</style>

<div id="razor-book-grid" class="max-w-7xl mx-auto px-4 sm:px-6 py-6 space-y-6">
    <!-- Filters Rail -->
    <div class="flex flex-col md:flex-row gap-4 items-stretch md:items-center justify-between border-b border-slate-200/50 pb-5">
        <!-- Search and Selection info -->
        <div class="flex-1 max-w-md relative">
            <span class="absolute inset-y-0 left-3 flex items-center text-slate-400">
                <svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z" />
                </svg>
            </span>
            <input 
                type="text" 
                placeholder="Search manuscripts, authors, titles..." 
                value="@SearchQuery"
                @oninput="HandleSearchInput"
                class="w-full rounded-xl border border-slate-200 bg-white pl-9 pr-4 py-2 text-xs text-slate-800 placeholder-slate-400 outline-none focus:ring-2 focus:ring-violet-500/15 focus:border-violet-500 transition-all font-sans" 
            />
        </div>

        <!-- Horizontal Scrollable Genre Filters -->
        <div class="flex items-center gap-1.5 overflow-x-auto pb-1 max-w-full no-scrollbar">
            <button 
                @onclick='() => SelectCategory("All")'
                class="px-3.5 py-1.5 rounded-full text-[10px] font-mono font-bold tracking-wider uppercase transition-all whitespace-nowrap cursor-pointer border @(SelectedCategory == "All" ? "bg-violet-600 border-violet-600 text-white" : "bg-white text-slate-600 border-slate-200/80 hover:bg-slate-50")">
                All Genres
            </button>
            @foreach (var cat in Categories)
            {
                <button 
                    @onclick="() => SelectCategory(cat)"
                    class="px-3.5 py-1.5 rounded-full text-[10px] font-mono font-bold tracking-wider uppercase transition-all whitespace-nowrap cursor-pointer border @(SelectedCategory == cat ? "bg-violet-600 border-violet-600 text-white" : "bg-white text-slate-600 border-slate-200/80 hover:bg-slate-50")">
                    @cat
                </button>
            }
        </div>
    </div>

    <!-- Active Catalog Grid -->
    @if (FilteredBooks().Any())
    {
        <div class="grid grid-cols-2 sm:grid-cols-3 lg:grid-cols-4 xl:grid-cols-5 gap-4 sm:gap-6">
            @foreach (var book in FilteredBooks())
            {
                <BookCard Book="book" OnSelectBook="OnSelectBook" />
            }
        </div>
    }
    else
    {
        <div class="p-12 text-center border border-dashed border-slate-200 bg-slate-50/50 rounded-3xl space-y-2">
            <svg class="mx-auto h-8 w-8 text-slate-300" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z" />
            </svg>
            <h4 class="font-serif text-sm font-bold text-slate-700">No active publications match your search</h4>
            <p class="text-[10px] text-slate-500 font-sans max-w-sm mx-auto leading-relaxed">
                Try resetting your filters or browsing with different keywords. Direct self-published uploads require moderation prior to live activation.
            </p>
        </div>
    }
</div>

@code {
    [Parameter] public List<BookModel> Books { get; set; } = new();
    [Parameter] public List<string> Categories { get; set; } = new();
    [Parameter] public EventCallback<BookModel> OnSelectBook { get; set; }

    private string SelectedCategory { get; set; } = "All";
    private string SearchQuery { get; set; } = string.Empty;

    private void SelectCategory(string category)
    {
        SelectedCategory = category;
    }

    private void HandleSearchInput(ChangeEventArgs e)
    {
        SearchQuery = e.Value?.ToString() ?? string.Empty;
    }

    private IEnumerable<BookModel> FilteredBooks()
    {
        var result = Books.Where(b => b.Status == "published");

        if (SelectedCategory != "All")
        {
            result = result.Where(b => b.Category.Equals(SelectedCategory, StringComparison.OrdinalIgnoreCase));
        }

        if (!string.IsNullOrWhiteSpace(SearchQuery))
        {
            var query = SearchQuery.Trim().ToLower();
            result = result.Where(b => 
                b.Title.ToLower().Contains(query) || 
                b.Author.ToLower().Contains(query) || 
                b.Description.ToLower().Contains(query)
            );
        }

        return result;
    }
}