@extends('layouts.examiner')
@section('title', 'Dashboard')

@section('content')
{{-- Page Header --}}
<div class="d-sm-flex align-items-center justify-content-between mb-4">
    <h1 class="h3 mb-0 text-gray-800">Dashboard</h1>
    @if($currentSession)
        <span class="badge badge-primary p-2 font-weight-bold" style="font-size:.85rem;">
            <i class="fas fa-calendar-alt mr-1"></i> Current Session: {{ $currentSession->name }}
        </span>
    @else
        <span class="badge badge-warning p-2">No active session &mdash;
            <a href="{{ route('examiner.sessions.index') }}" class="text-white"><u>set one</u></a>
        </span>
    @endif
</div>

{{-- ── Row 1: Live exam stats ──────────────────────────────── --}}
<div class="row">
    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-primary shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-primary text-uppercase mb-1">Total Candidates</div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ number_format($stats['total_candidates']) }}</div>
                    </div>
                    <div class="col-auto"><i class="fas fa-users fa-2x text-gray-300"></i></div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-success shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-success text-uppercase mb-1">Checked In</div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ number_format($stats['checked_in']) }}</div>
                        <div class="text-xs text-muted">Today: {{ number_format($stats['checked_in_today']) }}</div>
                    </div>
                    <div class="col-auto"><i class="fas fa-clipboard-check fa-2x text-gray-300"></i></div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-info shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-info text-uppercase mb-1">Currently Online</div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ number_format($stats['currently_online']) }}</div>
                    </div>
                    <div class="col-auto"><i class="fas fa-laptop fa-2x text-gray-300"></i></div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-warning shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-warning text-uppercase mb-1">Submitted</div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ number_format($stats['submitted']) }}</div>
                        <div class="text-xs text-muted">Today: {{ number_format($stats['written_today']) }}</div>
                    </div>
                    <div class="col-auto"><i class="fas fa-paper-plane fa-2x text-gray-300"></i></div>
                </div>
            </div>
        </div>
    </div>
</div>

{{-- ── Row 2: Setup stats ──────────────────────────────────── --}}
<div class="row">
    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-secondary shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-secondary text-uppercase mb-1">Questions</div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ number_format($stats['total_questions']) }}</div>
                    </div>
                    <div class="col-auto"><i class="fas fa-question-circle fa-2x text-gray-300"></i></div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-secondary shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-secondary text-uppercase mb-1">Subjects</div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ number_format($stats['total_subjects']) }}</div>
                    </div>
                    <div class="col-auto"><i class="fas fa-book fa-2x text-gray-300"></i></div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-secondary shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-secondary text-uppercase mb-1">Departments</div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ number_format($stats['total_departments']) }}</div>
                    </div>
                    <div class="col-auto"><i class="fas fa-building fa-2x text-gray-300"></i></div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-secondary shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-secondary text-uppercase mb-1">Results Generated</div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ number_format($stats['results_generated']) }}</div>
                    </div>
                    <div class="col-auto"><i class="fas fa-chart-bar fa-2x text-gray-300"></i></div>
                </div>
            </div>
        </div>
    </div>
</div>

{{-- ── Row 3: Session progress + Quick actions + Recent attendance --}}
<div class="row">

    {{-- Current session progress --}}
    @if($currentSession && !empty($sessionStats))
    <div class="col-lg-4 mb-4">
        <div class="card shadow h-100">
            <div class="card-header py-3">
                <h6 class="m-0 font-weight-bold text-primary">
                    <i class="fas fa-chart-pie mr-1"></i> Session Progress &mdash; {{ $currentSession->name }}
                </h6>
            </div>
            <div class="card-body">
                @php
                    $total     = $sessionStats['candidates'] ?: 1;
                    $submitted = $sessionStats['submitted'];
                    $pct       = round(($submitted / $total) * 100);
                @endphp
                <div class="mb-3">
                    <div class="d-flex justify-content-between mb-1">
                        <span class="small font-weight-bold">Candidates Registered</span>
                        <span class="small font-weight-bold">{{ number_format($sessionStats['candidates']) }}</span>
                    </div>
                    <div class="d-flex justify-content-between mb-1">
                        <span class="small font-weight-bold">Submitted Exam</span>
                        <span class="small font-weight-bold">{{ number_format($submitted) }}</span>
                    </div>
                </div>
                <div class="mb-1 small font-weight-bold text-primary">{{ $pct }}% submitted</div>
                <div class="progress mb-4">
                    <div class="progress-bar bg-success" role="progressbar" style="width: {{ $pct }}%"
                         aria-valuenow="{{ $pct }}" aria-valuemin="0" aria-valuemax="100"></div>
                </div>
                <a href="{{ route('examiner.results.index') }}" class="btn btn-sm btn-warning btn-block">
                    <i class="fas fa-sync mr-1"></i> Generate Results
                </a>
            </div>
        </div>
    </div>
    @endif

    {{-- Quick Actions --}}
    <div class="col-lg-4 mb-4">
        <div class="card shadow h-100">
            <div class="card-header py-3">
                <h6 class="m-0 font-weight-bold text-primary"><i class="fas fa-bolt mr-1"></i> Quick Actions</h6>
            </div>
            <div class="card-body">
                <a href="{{ route('examiner.attendance.index') }}" class="btn btn-success btn-block mb-2">
                    <i class="fas fa-clipboard-check mr-1"></i> Check In Candidate
                </a>
                <a href="{{ route('examiner.candidates.create') }}" class="btn btn-primary btn-block mb-2">
                    <i class="fas fa-user-plus mr-1"></i> Add Candidate
                </a>
                <a href="{{ route('examiner.candidates.upload') }}" class="btn btn-info btn-block mb-2">
                    <i class="fas fa-upload mr-1"></i> Upload Candidates
                </a>
                <a href="{{ route('examiner.questions.upload') }}" class="btn btn-secondary btn-block mb-2">
                    <i class="fas fa-upload mr-1"></i> Upload Questions
                </a>
                <a href="{{ route('examiner.results.export') }}" class="btn btn-dark btn-block">
                    <i class="fas fa-download mr-1"></i> Export Results
                </a>
            </div>
        </div>
    </div>

    {{-- Recent Attendance --}}
    <div class="col-lg-4 mb-4">
        <div class="card shadow h-100">
            <div class="card-header py-3 d-flex justify-content-between align-items-center">
                <h6 class="m-0 font-weight-bold text-primary"><i class="fas fa-history mr-1"></i> Recent Check-ins</h6>
                <a href="{{ route('examiner.attendance.index') }}" class="small">View all</a>
            </div>
            <div class="card-body p-0">
                <div class="table-responsive">
                    <table class="table table-sm mb-0">
                        <thead class="thead-light">
                            <tr><th>Reg No</th><th>Name</th><th>Time</th></tr>
                        </thead>
                        <tbody>
                        @forelse($recentAttendance as $att)
                        <tr>
                            <td class="small">{{ $att->reg_no }}</td>
                            <td class="small">{{ \Illuminate\Support\Str::limit($att->name, 18) }}</td>
                            <td class="small text-muted">
                                {{ $att->time ? \Carbon\Carbon::parse($att->time)->format('H:i') : '—' }}
                            </td>
                        </tr>
                        @empty
                        <tr><td colspan="3" class="text-center text-muted small py-3">No check-ins yet</td></tr>
                        @endforelse
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>

</div>
@endsection