@extends('layout.user')

@section('content')
<main id="main" class="main">
    <div class="pagetitle d-flex justify-content-between align-items-center">
        <div>
            <h1>Data Entry Transkrip Nilai</h1>
            <nav>
                <ol class="breadcrumb mb-0">
                    <li class="breadcrumb-item"><a href="/dashboard">Home</a></li>
                    <li class="breadcrumb-item active">Input Transkrip</li>
                </ol>
            </nav>
        </div>
    </div>

    <section class="section mt-3">
        <div class="row">
            <div class="col-lg-12">
                <!-- Include Stepper Component -->
                @include('User.components.rpl-stepper')

                @if(session('success'))
                    <div class="alert alert-success alert-dismissible fade show border-0 shadow-sm" role="alert">
                        <i class="bi bi-check-circle me-2"></i>
                        {{ session('success') }}
                        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
                    </div>
                @endif

                @if(session('error'))
                    <div class="alert alert-danger alert-dismissible fade show border-0 shadow-sm" role="alert">
                        <i class="bi bi-exclamation-triangle me-2"></i>
                        {{ session('error') }}
                        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
                    </div>
                @endif

                @if($errors->any())
                    <div class="alert alert-danger alert-dismissible fade show border-0 shadow-sm" role="alert">
                        <i class="bi bi-exclamation-octagon me-2"></i>
                        <ul class="mb-0 ps-3">
                            @foreach($errors->all() as $error)
                                <li>{{ $error }}</li>
                            @endforeach
                        </ul>
                        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
                    </div>
                @endif

                @if($isLocked ?? false)
                    <div class="alert alert-warning d-flex align-items-center border-0 shadow-sm" role="alert">
                        <i class="bi bi-lock-fill me-2"></i>
                        <div>Data tidak dapat diubah karena self-assessment sudah dikirim.</div>
                    </div>
                @endif
            </div>
        </div>

        <div class="row">
            <!-- Left Pane: PDF Viewer (Sticky) -->
            <div class="col-lg-7 mb-4">
                <div class="card border-0 shadow-sm rounded-4 sticky-top-pdf">
                    <div class="card-header bg-white border-0 pt-4 px-4 d-flex justify-content-between align-items-center">
                        <h5 class="card-title p-0 m-0 fw-bold text-dark fs-5">
                            <i class="bi bi-file-earmark-pdf text-danger me-2"></i>Preview Dokumen Transkrip
                        </h5>
                        <a href="{{ route('view-transkrip', $existing_transkrip->file) }}" target="_blank" class="btn btn-outline-secondary btn-sm rounded-pill px-3">
                            <i class="bi bi-box-arrow-up-right me-1"></i> Buka Tab Baru
                        </a>
                    </div>
                    <div class="card-body px-4 pb-4">
                        <div class="pdf-container rounded-4 overflow-hidden border">
                            <embed 
                                src="{{ route('view-transkrip', $existing_transkrip->file) }}"
                                type="application/pdf"
                                width="100%"
                                height="650px"
                            />
                        </div>
                    </div>
                </div>
            </div>

            <!-- Right Pane: Dynamic Table Form -->
            <div class="col-lg-5 mb-4">
                <div class="card border-0 shadow-sm rounded-4">
                    <div class="card-header bg-white border-0 pt-4 px-4">
                        <h5 class="card-title p-0 m-0 fw-bold text-dark fs-5">
                            <i class="bi bi-table text-primary me-2"></i>Data Entry Transkrip Nilai
                        </h5>
                        <p class="text-muted small mb-0 mt-1">Salin seluruh mata kuliah dari berkas transkrip Anda ke tabel dinamis di bawah ini.</p>
                    </div>
                    <div class="card-body p-4">
                        <form action="{{ route('store-matkul-transkrip', $existing_transkrip->id) }}" method="POST" id="transkripForm">
                            @csrf
                            <fieldset {{ ($isLocked ?? false) ? 'disabled' : '' }}>
                            <div class="table-responsive rounded-3 border mb-3">
                                <table class="table table-hover align-middle mb-0" id="matkulTable">
                                    <thead class="table-light text-muted fw-bold small">
                                        <tr>
                                            <th style="width: 60px;" class="text-center">No</th>
                                            <th>Nama Mata Kuliah</th>
                                            <th style="width: 120px;" class="text-center">SKS</th>
                                            <th style="width: 120px;" class="text-center">Nilai</th>
                                            <th style="width: 80px;" class="text-center">Aksi</th>
                                        </tr>
                                    </thead>
                                    <tbody id="matkulTableBody">
                                        @php
                                            $mata_kuliah_list = $existing_transkrip->mata_kuliah_transkrip ?? [];
                                        @endphp
                                        @forelse($mata_kuliah_list as $index => $mk)
                                            <tr class="matkul-row">
                                                <td class="text-center row-number fw-bold text-muted">{{ $index + 1 }}</td>
                                                <td>
                                                    <input type="text" name="mata_kuliah[{{ $index }}][nama]" class="form-control form-control-sm rounded-3 border-0 bg-light-input" value="{{ $mk['nama'] }}" required placeholder="Nama Mata Kuliah">
                                                </td>
                                                <td>
                                                    <input type="number" name="mata_kuliah[{{ $index }}][sks]" class="form-control form-control-sm text-center rounded-3 border-0 bg-light-input" value="{{ $mk['sks'] ?? '' }}" min="1" max="10" required placeholder="SKS">
                                                </td>
                                                <td>
                                                    <input type="text" name="mata_kuliah[{{ $index }}][nilai]" class="form-control form-control-sm text-center text-uppercase rounded-3 border-0 bg-light-input" value="{{ $mk['nilai'] }}" required placeholder="Nilai">
                                                </td>
                                                <td class="text-center">
                                                    <button type="button" class="btn btn-outline-danger btn-sm rounded-circle border-0 remove-row">
                                                        <i class="bi bi-trash-fill"></i>
                                                    </button>
                                                </td>
                                            </tr>
                                        @empty
                                            <tr class="matkul-row">
                                                <td class="text-center row-number fw-bold text-muted">1</td>
                                                <td>
                                                    <input type="text" name="mata_kuliah[0][nama]" class="form-control form-control-sm rounded-3 border-0 bg-light-input" required placeholder="Nama Mata Kuliah">
                                                </td>
                                                <td>
                                                    <input type="number" name="mata_kuliah[0][sks]" class="form-control form-control-sm text-center rounded-3 border-0 bg-light-input" min="1" max="10" required placeholder="SKS">
                                                </td>
                                                <td>
                                                    <input type="text" name="mata_kuliah[0][nilai]" class="form-control form-control-sm text-center text-uppercase rounded-3 border-0 bg-light-input" required placeholder="Nilai">
                                                </td>
                                                <td class="text-center">
                                                    <button type="button" class="btn btn-outline-danger btn-sm rounded-circle border-0 remove-row">
                                                        <i class="bi bi-trash-fill"></i>
                                                    </button>
                                                </td>
                                            </tr>
                                        @endforelse
                                    </tbody>
                                </table>
                            </div>

                            <div class="d-flex justify-content-between align-items-center mb-4">
                                <button type="button" class="btn btn-light rounded-pill px-4 py-2" id="addRowBtn">
                                    <i class="bi bi-plus-circle-fill text-primary me-2"></i>Tambah Baris
                                </button>
                                <button type="submit" class="btn btn-success rounded-pill px-4 py-2 shadow-sm">
                                    <i class="bi bi-save-fill me-2"></i>Simpan Perubahan
                                </button>
                            </div>
                            </fieldset>
                        </form>

                        <!-- Stepper Navigation buttons -->
                        <div class="d-flex justify-content-between mt-5 pt-4 border-top border-1">
                            <a href="{{ route('bukti-alih-jenjang-view') }}" class="btn btn-outline-secondary rounded-pill px-4 py-2">
                                <i class="bi bi-arrow-left me-2"></i> Sebelumnya
                            </a>
                            
                            @php
                                $next_enabled = count($mata_kuliah_list) > 0;
                            @endphp

                            @if($next_enabled)
                                <a href="{{ route('matkul-self-assessment-view') }}" class="btn btn-primary rounded-pill px-4 py-2">
                                    Selanjutnya <i class="bi bi-arrow-right ms-2"></i>
                                </a>
                            @else
                                <button type="button" class="btn btn-primary rounded-pill px-4 py-2" disabled data-bs-toggle="tooltip" data-bs-placement="top" title="Simpan minimal 1 mata kuliah untuk melanjutkan">
                                    Selanjutnya <i class="bi bi-arrow-right ms-2"></i>
                                </button>
                            @endif
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </section>
</main>

<style>
.sticky-top-pdf {
    position: -webkit-sticky;
    position: sticky;
    top: 90px;
    align-self: start;
    z-index: 100;
}
.pdf-container {
    border: 1px solid #dee2e6;
    background: #f8f9fa;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.03);
}
.bg-light-input {
    background-color: #f8f9fa;
    transition: all 0.2s ease;
}
.bg-light-input:focus {
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
    border: 1px solid #0d6efd !important;
}
.remove-row {
    color: #dc3545;
    background: transparent;
    transition: all 0.2s ease;
}
.remove-row:hover {
    background-color: #f8d7da;
    color: #dc3545;
}
</style>

@endsection

@push('scripts')
<script>
document.addEventListener('DOMContentLoaded', function() {
    const isLocked = {{ ($isLocked ?? false) ? 'true' : 'false' }};
    if (isLocked) {
        return;
    }

    // Tooltip initialization
    const tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'));
    tooltipTriggerList.map(function (tooltipTriggerEl) {
        return new bootstrap.Tooltip(tooltipTriggerEl);
    });

    const tableBody = document.getElementById('matkulTableBody');
    const addRowBtn = document.getElementById('addRowBtn');

    // Update row numbers and event listeners
    function updateRowNumbers() {
        const rows = tableBody.querySelectorAll('.matkul-row');
        rows.forEach((row, index) => {
            row.querySelector('.row-number').textContent = index + 1;
            
            // Update input names to maintain correct sequential array keys
            const inputs = row.querySelectorAll('input');
            inputs.forEach(input => {
                const nameAttr = input.getAttribute('name');
                if (nameAttr) {
                    const updatedName = nameAttr.replace(/mata_kuliah\[\d+\]/, `mata_kuliah[${index}]`);
                    input.setAttribute('name', updatedName);
                }
            });
        });
    }

    // Add Row Event
    addRowBtn.addEventListener('click', function() {
        const index = tableBody.querySelectorAll('.matkul-row').length;
        const newRow = document.createElement('tr');
        newRow.className = 'matkul-row';
        newRow.innerHTML = `
            <td class="text-center row-number fw-bold text-muted">${index + 1}</td>
            <td>
                <input type="text" name="mata_kuliah[${index}][nama]" class="form-control form-control-sm rounded-3 border-0 bg-light-input" required placeholder="Nama Mata Kuliah">
            </td>
            <td>
                <input type="number" name="mata_kuliah[${index}][sks]" class="form-control form-control-sm text-center rounded-3 border-0 bg-light-input" min="1" max="10" required placeholder="SKS">
            </td>
            <td>
                <input type="text" name="mata_kuliah[${index}][nilai]" class="form-control form-control-sm text-center text-uppercase rounded-3 border-0 bg-light-input" required placeholder="Nilai">
            </td>
            <td class="text-center">
                <button type="button" class="btn btn-outline-danger btn-sm rounded-circle border-0 remove-row">
                    <i class="bi bi-trash-fill"></i>
                </button>
            </td>
        `;
        tableBody.appendChild(newRow);
        
        // Focus on the new input
        newRow.querySelector('input').focus();
        
        updateRowNumbers();
    });

    // Remove Row Event
    tableBody.addEventListener('click', function(e) {
        if (e.target.closest('.remove-row')) {
            const rows = tableBody.querySelectorAll('.matkul-row');
            if (rows.length > 1) {
                e.target.closest('.matkul-row').remove();
                updateRowNumbers();
            } else {
                // If it's the last row, just clear values instead of deleting it
                const inputs = rows[0].querySelectorAll('input');
                inputs.forEach(input => input.value = '');
            }
        }
    });
});
</script>
@endpush