@extends('layouts.applicant.applicant')

@section('title', 'D5 - Conference Papers')

@section('breadcrumbs')
    <li class="breadcrumb-item"><a href="{{ route('applicant.applications.index') }}">My Applications</a></li>
    <li class="breadcrumb-item"><a href="{{ route('applicant.applications.show', $application) }}">{{ $application->application_number }}</a></li>
    <li class="breadcrumb-item active">D5 - Conference Papers</li>
@endsection

@section('content')
<div class="container-fluid">
    <!-- Page Header -->
    <div class="d-flex justify-content-between align-items-center mb-4">
        <div>
            <h1 class="h3 mb-0 text-gray-800">Conference Papers (Papers published/accepted in Conference Proceedings indexed in SCI/Scopus/Web of Science/or any internationally renowned conference.)</h1>
            <p class="text-muted">Application: {{ $application->application_number }}</p>
        </div>
        <div>
            @php
                $previousStep = $currentStep->getPreviousStep();
            @endphp
            @if($previousStep)
                <a href="{{ route('applicant.applications.step', [$application, $previousStep->slug]) }}" class="btn btn-outline-secondary">
                    <i class="fas fa-arrow-left me-2"></i>Previous Step
                </a>
            @endif
        </div>
    </div>

    <!-- Dynamic Progress Indicator -->
    @include('applicant.applications.partials.progress-indicator')

    @php
        $conferencePapers = $application->conferencePapers()->orderBy('serial_no')->get();
        $totalCreditPoints = $conferencePapers->sum('credit_points');
        $evaluationPoints = min($totalCreditPoints, 10); // Max 10 for evaluation
        $mainSupervisorCount = $conferencePapers->where('role', 'main_supervisor')->count();
        $firstAuthorCount = $conferencePapers->where('role', 'first_author')->count();
        $otherRoleCount = $conferencePapers->where('role', 'other')->count();
        $indexedCount = $conferencePapers->where('is_indexed', true)->count();
        $isSkipped = $application->skip_d5_conference_papers ?? false;
    @endphp
    
    <!-- Debug Information (Remove in production) -->
    @if(config('app.debug'))
    <div class="alert alert-info mb-4">
        <h6><i class="fas fa-bug me-2"></i>Debug Information</h6>
        <p><strong>Conference Papers Count:</strong> {{ $conferencePapers->count() }}</p>
        <p><strong>Application ID:</strong> {{ $application->id }}</p>
        <p><strong>Is Skipped:</strong> {{ $isSkipped ? 'Yes' : 'No' }}</p>
        <p><strong>Is Editable:</strong> {{ $application->isEditable() ? 'Yes' : 'No' }}</p>
        @if($conferencePapers->count() > 0)
            <p><strong>Paper IDs:</strong> {{ $conferencePapers->pluck('id')->implode(', ') }}</p>
            <p><strong>Roles:</strong> {{ $conferencePapers->pluck('role')->implode(', ') }}</p>
            <p><strong>Role Labels:</strong> {{ $conferencePapers->map(function($p) { return $p->role_label; })->implode(', ') }}</p>
        @endif
    </div>
    @endif

    <!-- Credit Points Summary -->
    <div class="row mb-4">
        <div class="col-md-6">
            <div class="card border-primary">
                <div class="card-body text-center">
                    <div class="h4 text-primary">{{ number_format($totalCreditPoints, 2) }}</div>
                    <div class="small text-muted">Total Credit Points</div>
                </div>
            </div>
        </div>
        <div class="col-md-6">
            <div class="card border-success">
                <div class="card-body text-center">
                    <div class="h4 text-success">{{ number_format($evaluationPoints, 2) }}</div>
                    <div class="small text-muted">Maximum Credit Points (Max 10)</div>
                </div>
            </div>
        </div>
    </div>

    <!-- Credit Points Calculation Info -->
    <div class="alert alert-info mb-4">
        <h6 class="alert-heading"><i class="fas fa-info-circle me-2"></i>Credit Points Calculation</h6>
        <div class="row">
            <div class="col-md-4">
                <strong>First Author:</strong>
                <ul class="mb-0 mt-1">
                    <li>Sole Author (0 others): 1 Credit Point</li>
                    <li>With Co-Authors: 0.6 Credit Points</li>
                </ul>
            </div>
            <div class="col-md-4">
                <strong>Main Supervisor:</strong> 0.6 Credit Points per paper
            </div>
            <div class="col-md-4">
                <strong>Co-Author:</strong> 0.4 ÷ Total Other Authors
            </div>
        </div>
        <hr>
        <div class="alert alert-warning mb-0">
            <strong>Important:</strong> 
            <ul class="mb-0">
                <li>Maximum 10 credit points can be obtained from all conference papers combined</li>
                <li>Papers should be published/accepted in internationally renowned conferences</li>
                <li>Indexing in SCI/Scopus/Web of Science is preferred but not mandatory</li>
            </ul>
        </div>
    </div>

    <!-- Conference Papers Section -->
    <div class="card shadow mb-4">
        <div class="card-header py-3">
            <div class="d-flex justify-content-between align-items-center">
                <h6 class="m-0 font-weight-bold text-primary">
                    <i class="fas fa-users me-2"></i>Conference Papers
                </h6>
                @if($application->isEditable())
                <button type="button" class="btn btn-primary btn-sm" data-bs-toggle="modal" data-bs-target="#addConferencePaperModal">
                    <i class="fas fa-plus me-1"></i>Add Conference Paper
                </button>
                @endif
            </div>
        </div>
        <div class="card-body">
            @if($conferencePapers->count() > 0)
                <div class="table-responsive">
                    <table class="table table-bordered">
                        <thead class="table-light">
                            <tr>
                                <th>Sr. No</th>
                                <th>Paper Title</th>
                                <th>Conference Name</th>
                                <th>Indexed</th>
                                <th>Role</th>
                                <th>Total No of Other Authors</th>
                                <th>Credit Points</th>
                                <th>First Page</th>
                                @if($application->isEditable())
                                <th>Actions</th>
                                @endif
                            </tr>
                        </thead>
                        <tbody>
                            @foreach($conferencePapers as $paper)
                            <tr>
                                <td>{{ $paper->serial_no }}</td>
                                <td class="fw-bold">{{ Str::limit($paper->paper_title, 50) }}</td>
                                <td>{{ Str::limit($paper->conference_name, 40) }}</td>
                                <td>
                                    <span class="badge badge-{{ $paper->is_indexed ? 'success' : 'secondary' }}">
                                        {{ $paper->indexed_status }}
                                    </span>
                                    @if($paper->is_indexed && $paper->indexed_in)
                                        <br><small class="text-muted">{{ $paper->indexed_in_label }}</small>
                                    @endif
                                </td>
                                <td>
                                    @php
                                        $badgeClass = 'secondary';
                                        if ($paper->role === 'main_supervisor') {
                                            $badgeClass = 'primary';
                                        } elseif ($paper->role === 'first_author') {
                                            $badgeClass = 'info';
                                        } elseif ($paper->role === 'other') {
                                            $badgeClass = 'warning';
                                        }
                                    @endphp
                                    <span class="badge badge-{{ $badgeClass }}" title="Role: {{ $paper->role }}">
                                        {{ $paper->role_label ?? $paper->role ?? 'N/A' }}
                                    </span>
                                </td>
                                <td>{{ $paper->total_other_authors }}</td>
                                <td class="fw-bold text-primary">{{ number_format($paper->credit_points, 2) }}</td>
                                <td>
                                    @if($paper->hasDocument())
                                        <a href="{{ route('applicant.conference-papers.download-document', [$application, $paper]) }}" 
                                           class="btn btn-sm btn-outline-primary" title="Download First Page">
                                            <i class="fas fa-download"></i>
                                        </a>
                                    @else
                                        <span class="text-danger">No Document</span>
                                    @endif
                                </td>
                                @if($application->isEditable())
                                <td>
                                    <div class="btn-group" role="group">
                                        <button type="button" class="btn btn-sm btn-outline-primary" 
                                                onclick="editConferencePaper({{ $paper->id }})" title="Edit">
                                            <i class="fas fa-edit"></i>
                                        </button>
                                        <button type="button" class="btn btn-sm btn-outline-danger" 
                                                onclick="deleteConferencePaper({{ $paper->id }})" title="Delete">
                                            <i class="fas fa-trash"></i>
                                        </button>
                                    </div>
                                </td>
                                @endif
                            </tr>
                            @endforeach
                        </tbody>
                    </table>
                </div>
                
                <!-- Summary -->
                <div class="mt-4">
                    <div class="row">
                        <div class="col-md-6">
                            <div class="card border-info">
                                <div class="card-body">
                                    <h6 class="card-title text-info">Summary</h6>
                                    <p class="mb-1"><strong>Total Papers:</strong> {{ $conferencePapers->count() }}</p>
                                    <p class="mb-1"><strong>Main Supervisor:</strong> {{ $mainSupervisorCount }} papers</p>
                                    <p class="mb-1"><strong>First Author:</strong> {{ $firstAuthorCount }} papers</p>
                                    <p class="mb-1"><strong>Co-Author:</strong> {{ $otherRoleCount }} papers</p>
                                    <p class="mb-0"><strong>Total Credit Points:</strong> {{ number_format($totalCreditPoints, 2) }}</p>
                                </div>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="card border-secondary">
                                <div class="card-body">
                                    <h6 class="card-title text-secondary">Breakdown</h6>
                                    <p class="mb-1"><strong>Indexed Papers:</strong> {{ $indexedCount }}</p>
                                    <p class="mb-1"><strong>Non-Indexed Papers:</strong> {{ $conferencePapers->count() - $indexedCount }}</p>
                                    <p class="mb-0"><strong>Evaluation Points:</strong> {{ number_format($evaluationPoints, 2) }} / 10</p>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            @else
                <div class="text-center py-5">
                    <i class="fas fa-users fa-4x text-muted mb-3"></i>
                    <h5 class="text-muted">No Conference Papers Added</h5>
                    <p class="text-muted">Add your published/accepted conference papers to earn credit points.</p>
                    @if($application->isEditable())
                        <button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#addConferencePaperModal">
                            <i class="fas fa-plus me-2"></i>Add First Conference Paper
                        </button>
                    @endif
                </div>
            @endif
        </div>
    </div>

    <!-- Navigation -->
    <div class="d-flex justify-content-between mt-4">
        <div>
            @if($previousStep)
                <a href="{{ route('applicant.applications.step', [$application, $previousStep->slug]) }}" class="btn btn-secondary">
                    <i class="fas fa-arrow-left me-1"></i>Previous: {{ $previousStep->name }}
                </a>
            @endif
        </div>
        
        <div>
            @php
                $nextStep = $currentStep->getNextStep();
            @endphp
            @if($nextStep)
                <a href="{{ route('applicant.applications.step', [$application, $nextStep->slug]) }}" class="btn btn-primary">
                    Next: {{ $nextStep->name }} <i class="fas fa-arrow-right ms-1"></i>
                </a>
            @endif
        </div>
    </div>
</div>

<!-- Add/Edit Conference Paper Modal -->
@if($application->isEditable())
<div class="modal fade" id="addConferencePaperModal" tabindex="-1" aria-labelledby="addConferencePaperModalLabel" aria-hidden="true">
    <div class="modal-dialog modal-xl">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="addConferencePaperModalLabel">Add Conference Paper</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <form id="conferencePaperForm" method="POST" enctype="multipart/form-data">
                @csrf
                <div class="modal-body">
                    <input type="hidden" id="conference_paper_id" name="conference_paper_id">
                    
                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="paper_title" class="form-label">Paper Title <span class="text-danger">*</span></label>
                                <input type="text" class="form-control" id="paper_title" name="paper_title" required>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="conference_name" class="form-label">Conference Name <span class="text-danger">*</span></label>
                                <input type="text" class="form-control" id="conference_name" name="conference_name" required>
                            </div>
                        </div>
                    </div>
                    
                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="is_indexed" class="form-label">Indexed <span class="text-danger">*</span></label>
                                <select class="form-select" id="is_indexed" name="is_indexed" required onchange="toggleIndexedIn()">
                                    <option value="">Select</option>
                                    <option value="1">Yes</option>
                                    <option value="0">No</option>
                                </select>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="indexed_in" class="form-label">Indexed In</label>
                                <select class="form-select" id="indexed_in" name="indexed_in" disabled>
                                    <option value="">Select Index</option>
                                    <option value="scopus">SCOPUS</option>
                                    <option value="sci">SCI</option>
                                    <option value="wos">Web of Science</option>
                                    <option value="other">Other International</option>
                                </select>
                                <small class="text-muted">Required if indexed is "Yes"</small>
                            </div>
                        </div>
                    </div>
                    
                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="role" class="form-label">Role <span class="text-danger">*</span></label>
                                <select class="form-select" id="role" name="role" required onchange="calculateCreditPoints()">
                                    <option value="">Select Role</option>
                                    <option value="first_author">First Author</option>
                                    <option value="main_supervisor">Main Supervisor</option>
                                    <option value="other">Co-Author</option>
                                </select>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="total_other_authors" class="form-label">Total No of Other Authors</label>
                                <input type="number" class="form-control" id="total_other_authors" name="total_other_authors" min="0" value="0" onchange="calculateCreditPoints()" oninput="calculateCreditPoints()">
                                <small class="text-muted">Number of co-authors (excluding yourself)</small>
                            </div>
                        </div>
                    </div>
                    
                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label class="form-label">Credit Points (Auto-calculated)</label>
                                <div class="input-group">
                                    <input type="number" class="form-control" id="credit_points_display" readonly>
                                    <span class="input-group-text">
                                        <i class="fas fa-calculator"></i>
                                    </span>
                                </div>
                                <small class="text-muted" id="credit_points_info">
                                    Credit points will be calculated automatically based on role
                                </small>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="first_page_document" class="form-label">Upload First Page of Paper (PDF) <span class="text-danger">*</span></label>
                                <input type="file" class="form-control" id="first_page_document" name="first_page_document" accept=".pdf">
                                <small class="text-muted">Upload the first page of the conference paper (PDF only, max 5MB)</small>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
                    <button type="submit" class="btn btn-primary">Save Conference Paper</button>
                </div>
            </form>
        </div>
    </div>
</div>
@endif

<script>
function toggleIndexedIn() {
    const isIndexed = document.getElementById('is_indexed').value;
    const indexedInSelect = document.getElementById('indexed_in');
    
    if (isIndexed === '1') {
        indexedInSelect.disabled = false;
        indexedInSelect.required = true;
    } else {
        indexedInSelect.disabled = true;
        indexedInSelect.required = false;
        indexedInSelect.value = '';
    }
}

function calculateCreditPoints() {
    const role = document.getElementById('role').value;
    const totalOtherAuthors = parseInt(document.getElementById('total_other_authors').value) || 0;
    let creditPoints = 0;
    let info = 'Credit points will be calculated automatically based on role and other authors';
    
    if (role === 'first_author') {
        if (totalOtherAuthors == 0) {
            creditPoints = 1.0;
            info = 'First Author (Sole Author): 1 Credit Point';
        } else {
            creditPoints = 0.6;
            info = `First Author with ${totalOtherAuthors} Co-Authors: 0.6 Credit Points`;
        }
    } else if (role === 'main_supervisor') {
        creditPoints = 0.6;
        info = 'Main Supervisor: 0.6 Credit Points';
    } else if (role === 'other') { // Co-Author
        if (totalOtherAuthors == 0) {
            creditPoints = 0.4;
            info = 'Co-Author with 0 Other Authors: 0.4 Credit Points';
        } else {
            creditPoints = Math.round((0.4 / totalOtherAuthors) * 100) / 100;
            info = `Co-Author: 0.4 ÷ ${totalOtherAuthors} Other Authors = ${creditPoints.toFixed(2)} Credit Points`;
        }
    }
    
    document.getElementById('credit_points_display').value = creditPoints.toFixed(2);
    document.getElementById('credit_points_info').innerHTML = info;
    document.getElementById('credit_points_info').className = creditPoints > 0 ? 'text-success' : 'text-muted';
}

function editConferencePaper(paperId) {
    // Fetch paper data and populate modal
    fetch(`{{ route("applicant.conference-papers.show", [$application, "PAPER_ID"]) }}`.replace('PAPER_ID', paperId))
        .then(response => response.json())
        .then(data => {
            document.getElementById('conference_paper_id').value = data.id;
            document.getElementById('paper_title').value = data.paper_title;
            document.getElementById('conference_name').value = data.conference_name;
            document.getElementById('is_indexed').value = data.is_indexed ? '1' : '0';
            document.getElementById('indexed_in').value = data.indexed_in || '';
            document.getElementById('role').value = data.role;
            document.getElementById('total_other_authors').value = data.total_other_authors;
            
            toggleIndexedIn();
            calculateCreditPoints();
            
            document.getElementById('addConferencePaperModalLabel').textContent = 'Edit Conference Paper';
            document.getElementById('conferencePaperForm').action = 
                `{{ route("applicant.conference-papers.update", [$application, "PAPER_ID"]) }}`.replace('PAPER_ID', paperId);
            
            // Show modal
            new bootstrap.Modal(document.getElementById('addConferencePaperModal')).show();
        })
        .catch(error => {
            console.error('Error:', error);
            alert('Error loading paper data');
        });
}

function deleteConferencePaper(paperId) {
    if (confirm('Are you sure you want to delete this conference paper?')) {
        fetch(`{{ route("applicant.conference-papers.destroy", [$application, "PAPER_ID"]) }}`.replace('PAPER_ID', paperId), {
            method: 'DELETE',
            headers: {
                'X-CSRF-TOKEN': '{{ csrf_token() }}',
                'Content-Type': 'application/json',
            },
        })
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                location.reload();
            } else {
                alert('Error deleting conference paper');
            }
        })
        .catch(error => {
            console.error('Error:', error);
            alert('Error deleting conference paper');
        });
    }
}

// Reset modal when opening for new paper
document.getElementById('addConferencePaperModal').addEventListener('show.bs.modal', function (event) {
    if (!event.relatedTarget || !event.relatedTarget.onclick) {
        // Reset form for new paper
        document.getElementById('conferencePaperForm').reset();
        document.getElementById('conference_paper_id').value = '';
        document.getElementById('addConferencePaperModalLabel').textContent = 'Add Conference Paper';
        document.getElementById('conferencePaperForm').action = '{{ route("applicant.conference-papers.store", $application) }}';
        document.getElementById('credit_points_display').value = '';
        document.getElementById('credit_points_info').innerHTML = 'Credit points will be calculated automatically based on role';
        document.getElementById('credit_points_info').className = 'text-muted';
        document.getElementById('indexed_in').disabled = true;
        document.getElementById('indexed_in').required = false;
    }
});

// Handle form submission
document.getElementById('conferencePaperForm').addEventListener('submit', function(e) {
    e.preventDefault();
    
    const formData = new FormData(this);
    const isEdit = document.getElementById('conference_paper_id').value !== '';
    
    if (isEdit) {
        formData.append('_method', 'PUT');
    }
    
    fetch(this.action, {
        method: 'POST',
        body: formData,
        headers: {
            'X-CSRF-TOKEN': '{{ csrf_token() }}',
        },
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            location.reload();
        } else {
            alert('Error saving conference paper: ' + (data.message || 'Unknown error'));
        }
    })
    .catch(error => {
        console.error('Error:', error);
        alert('Error saving conference paper');
    });
});
</script>

<style>
.card {
    border: none;
    box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
}

.card-header {
    background-color: #f8f9fc;
    border-bottom: 1px solid #e3e6f0;
}

.table th {
    background-color: #f8f9fc;
    border-color: #e3e6f0;
    font-weight: 600;
    color: #5a5c69;
    font-size: 0.875rem;
}

.table td {
    vertical-align: middle;
    font-size: 0.875rem;
}

.btn-group .btn {
    margin-right: 2px;
}

.badge {
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
    font-weight: 500;
}

.badge-primary {
    background-color: #007bff;
    color: #fff;
}

.badge-info {
    background-color: #17a2b8;
    color: #fff;
}

.badge-secondary {
    background-color: #6c757d;
    color: #fff;
}

.badge-success {
    background-color: #28a745;
    color: #fff;
}

.badge-warning {
    background-color: #ffc107;
    color: #212529;
}

.badge-danger {
    background-color: #dc3545;
    color: #fff;
}

.modal-content {
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.alert {
    border: none;
    border-radius: 0.5rem;
}
</style>
@endsection