@extends('layouts.app')

@section('title', 'Certificates Records')
@section('page_header', 'Issued Certificates Records')

@section('content')
<div class="space-y-6">

    <!-- Top Action Bar -->
    <div class="flex flex-col md:flex-row items-stretch md:items-center justify-between gap-4 bg-white p-6 rounded-3xl border border-slate-200/80 shadow-sm">
        <div>
            <h2 class="text-xl font-extrabold text-slate-900">All Issued Certificates</h2>
            <p class="text-xs text-slate-500">Track email dispatch status, print counts, and certificate authenticity states</p>
        </div>

        <a href="{{ route('admin.certificates.create') }}" 
           class="inline-flex items-center gap-2 bg-gradient-to-r from-emerald-600 to-teal-600 hover:from-emerald-700 hover:to-teal-700 text-white font-bold text-xs px-5 py-3 rounded-xl shadow-lg shadow-emerald-600/20 transition-all hover:scale-105">
            <i data-lucide="plus-circle" class="w-4 h-4"></i>
            <span>Issue New Certificate</span>
        </a>
    </div>

    <!-- Filter Bar -->
    <div class="bg-white p-6 rounded-3xl border border-slate-200/80 shadow-sm">
        <form method="GET" action="{{ route('admin.certificates.index') }}" class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-5 gap-4">
            
            <!-- Search -->
            <div class="lg:col-span-2">
                <label class="block text-[10px] font-bold text-slate-400 uppercase tracking-wider mb-1">Search Certificate</label>
                <div class="relative">
                    <input type="text" name="search" value="{{ request('search') }}" 
                           placeholder="Search Serial ID (HWS-2026-X...), Student Name..." 
                           class="w-full pl-9 pr-4 py-2.5 rounded-xl border border-slate-200 bg-slate-50 text-xs font-semibold focus:bg-white focus:border-emerald-600 outline-none">
                    <i data-lucide="search" class="w-4 h-4 text-slate-400 absolute left-3 top-3"></i>
                </div>
            </div>

            <!-- Status Filter -->
            <div>
                <label class="block text-[10px] font-bold text-slate-400 uppercase tracking-wider mb-1">Filter Status</label>
                <select name="status" onchange="this.form.submit()" class="w-full py-2.5 px-3 rounded-xl border border-slate-200 bg-slate-50 text-xs font-semibold focus:bg-white focus:border-emerald-600 outline-none">
                    <option value="">All Statuses</option>
                    <option value="active" {{ request('status') == 'active' ? 'selected' : '' }}>🟢 Active Only</option>
                    <option value="revoked" {{ request('status') == 'revoked' ? 'selected' : '' }}>🔴 Revoked Only</option>
                </select>
            </div>

            <!-- Course Filter -->
            <div>
                <label class="block text-[10px] font-bold text-slate-400 uppercase tracking-wider mb-1">Filter Course</label>
                <select name="course_id" onchange="this.form.submit()" class="w-full py-2.5 px-3 rounded-xl border border-slate-200 bg-slate-50 text-xs font-semibold focus:bg-white focus:border-emerald-600 outline-none">
                    <option value="">All Courses</option>
                    @foreach($courses as $crs)
                        <option value="{{ $crs->id }}" {{ request('course_id') == $crs->id ? 'selected' : '' }}>{{ $crs->title }}</option>
                    @endforeach
                </select>
            </div>

            <div class="flex items-end gap-2">
                <button type="submit" class="flex-1 bg-emerald-600 text-white font-bold text-xs py-2.5 rounded-xl hover:bg-emerald-700 transition-colors">
                    Filter
                </button>
                @if(request()->hasAny(['search', 'status', 'course_id']))
                <a href="{{ route('admin.certificates.index') }}" class="p-2.5 bg-slate-100 text-slate-600 rounded-xl hover:bg-slate-200" title="Reset Filters">
                    <i data-lucide="rotate-ccw" class="w-4 h-4"></i>
                </a>
                @endif
            </div>
        </form>
    </div>

    <!-- Certificates Table -->
    <div class="bg-white rounded-3xl border border-slate-200/80 shadow-sm overflow-hidden">
        <div class="overflow-x-auto">
            <table class="w-full text-left text-xs">
                <thead class="bg-slate-50 text-slate-500 uppercase tracking-wider font-bold border-b border-slate-200">
                    <tr>
                        <th class="p-4">Serial ID</th>
                        <th class="p-4">Student & College</th>
                        <th class="p-4">Course / Domain</th>
                        <th class="p-4 text-center">Email Status</th>
                        <th class="p-4 text-center">Print Count</th>
                        <th class="p-4 text-center">Validity Status</th>
                        <th class="p-4 text-right">Actions</th>
                    </tr>
                </thead>
                <tbody class="divide-y divide-slate-100 font-medium">
                    @forelse($certificates as $cert)
                    <tr class="hover:bg-slate-50/80 transition-colors">
                        <td class="p-4">
                            <a href="{{ route('admin.certificates.show', $cert->id) }}" class="font-mono font-extrabold text-emerald-700 bg-emerald-50 px-2.5 py-1 rounded border border-emerald-200 inline-block hover:bg-emerald-100">
                                {{ $cert->certificate_uuid }}
                            </a>
                            <span class="block text-[10px] text-slate-400 mt-1">Issued {{ date('d M Y', strtotime($cert->issue_date)) }}</span>
                        </td>

                        <td class="p-4">
                            <div class="font-bold text-slate-900">{{ $cert->student->full_name }}</div>
                            <div class="text-[11px] text-slate-500">{{ $cert->student->college->name ?? 'Direct Applicant' }}</div>
                        </td>

                        <td class="p-4">
                            <div class="font-bold text-slate-800">{{ $cert->course->title ?? 'Internship' }}</div>
                            <div class="text-[11px] text-slate-500">{{ $cert->duration }} ({{ $cert->internship_mode }})</div>
                        </td>

                        <td class="p-4 text-center">
                            @if($cert->email_sent)
                                <span class="inline-flex items-center gap-1 text-emerald-700 bg-emerald-50 px-2.5 py-1 rounded-full text-[10px] font-bold border border-emerald-200">
                                    <i data-lucide="mail-check" class="w-3.5 h-3.5"></i> Sent
                                </span>
                            @else
                                <span class="inline-flex items-center gap-1 text-slate-500 bg-slate-100 px-2.5 py-1 rounded-full text-[10px] font-bold">
                                    Not Sent
                                </span>
                            @endif
                        </td>

                        <td class="p-4 text-center">
                            <span class="font-extrabold text-slate-700 bg-slate-100 px-2.5 py-1 rounded-full text-xs">
                                🖨 {{ $cert->print_count }}
                            </span>
                        </td>

                        <td class="p-4 text-center">
                            @if($cert->status === 'active')
                                <span class="inline-flex items-center gap-1 text-emerald-700 bg-emerald-100 px-3 py-1 rounded-full text-[11px] font-bold">
                                    🟢 Active
                                </span>
                            @else
                                <span class="inline-flex items-center gap-1 text-rose-700 bg-rose-100 px-3 py-1 rounded-full text-[11px] font-bold" title="{{ $cert->revocation_reason }}">
                                    🔴 Revoked
                                </span>
                            @endif
                        </td>

                        <td class="p-4 text-right space-x-1">
                            <!-- View Details -->
                            <a href="{{ route('admin.certificates.show', $cert->id) }}" 
                               class="p-2 text-slate-600 hover:bg-slate-100 rounded-xl inline-block" title="View Certificate Details">
                                <i data-lucide="eye" class="w-4 h-4"></i>
                            </a>

                            <!-- Download PDF -->
                            <a href="{{ route('admin.certificates.download_pdf', $cert->id) }}" 
                               class="p-2 text-emerald-600 hover:bg-emerald-50 rounded-xl inline-block" title="Download High-Res PDF">
                                <i data-lucide="download" class="w-4 h-4"></i>
                            </a>
                        </td>
                    </tr>
                    @empty
                    <tr>
                        <td colspan="7" class="p-8 text-center text-slate-400">No certificate records found matching query.</td>
                    </tr>
                    @endforelse
                </tbody>
            </table>
        </div>

        @if($certificates->hasPages())
        <div class="p-4 border-t border-slate-100">
            {{ $certificates->links() }}
        </div>
        @endif
    </div>

</div>
@endsection