@extends('layouts.applicant.applicant')

@section('head')
<meta name="csrf-token" content="{{ csrf_token() }}">
@endsection

@section('title', 'D2 - Consultancy Projects')

@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">D2 - Consultancy Projects</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">D2 - Consultancy Project(s) as PI/Co-PI</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
        $consultancyProjects = $application->consultancyProjects()->orderBy('serial_no')->get();
        $totalCreditPoints = $consultancyProjects->sum('credit_points');
        $evaluationPoints = min($totalCreditPoints, 10); // Max 10 for evaluation
        $isSkipped = $application->skip_d2_consultancy ?? false;
    @endphp

    <!-- 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($totalCreditPoints, 2) }}</div>
                    <div class="small text-muted">Page Total Credit Points</div>
                </div>
            </div>
        </div>
        <div class="col-md-6">
            <div class="card border-success">
                <div class="card-body text-center">
                    <div class="h4 text-success">{{ number_format($evaluationPoints, 2) }}</div>
                    <div class="small text-muted">Total Used for Evaluation (Max 10)</div>
                </div>
            </div>
        </div>
    </div>

    <!-- Skip Step Option -->
    <div class="card shadow mb-4">
        <div class="card-header py-3">
            <h6 class="m-0 font-weight-bold text-warning">
                <i class="fas fa-exclamation-triangle me-2"></i>Skip Step Declaration
            </h6>
        </div>
        <div class="card-body">
            <div class="form-check">
                <input class="form-check-input" type="checkbox" id="skip_d2_consultancy" 
                       {{ $isSkipped ? 'checked' : '' }}
                       @if(!$application->isEditable()) disabled @endif
                       onchange="toggleSkipStep('d2-consultancy')">
                <label class="form-check-label fw-bold" for="skip_d2_consultancy">
                    I have no consultancy projects to add
                </label>
                <div class="form-text">
                    Check this box if you have never undertaken any consultancy projects as PI or Co-PI.
                </div>
            </div>
        </div>
    </div>

    <!-- Credit Points Calculation Info -->
    <div class="alert alert-info mb-4" id="consultancyInfoSection" style="{{ $isSkipped ? 'display: none;' : '' }}">
        <h6 class="alert-heading"><i class="fas fa-info-circle me-2"></i>Credit Points Calculation</h6>
        <div class="row">
            <div class="col-md-12">
                <strong>Credit Points Formula:</strong> 2 points for every complete ₹5 Lakhs
                <ul class="mt-2 mb-0">
                    <li>₹10 Lakhs = 4 Credit Points (2 × 2)</li>
                    <li>₹15 Lakhs = 6 Credit Points (3 × 2)</li>
                    <li>₹17 Lakhs = 6 Credit Points (only ₹15 Lakhs counted)</li>
                    <li>₹4 Lakhs = 0 Credit Points (less than ₹5 Lakhs)</li>
                </ul>
            </div>
        </div>
        <hr>
        <small class="text-muted">
            <strong>Note:</strong> Only complete multiples of ₹5 Lakhs are considered. Maximum 10 credit points will be used for evaluation.
        </small>
    </div>

    <!-- Consultancy Projects Section -->
    <div class="card shadow mb-4" id="consultancyContentSection" style="{{ $isSkipped ? 'display: none;' : '' }}">
        <div class="card-header py-3">
            <div class="d-flex justify-content-between align-items-center">
                <h6 class="m-0 font-weight-bold text-primary">
                    <i class="fas fa-handshake me-2"></i>Consultancy Projects
                </h6>
                @if($application->isEditable() && !$isSkipped)
                <button type="button" class="btn btn-primary btn-sm" data-bs-toggle="modal" data-bs-target="#addConsultancyModal">
                    <i class="fas fa-plus me-1"></i>Add Consultancy Project
                </button>
                @endif
            </div>
        </div>
        <div class="card-body">
            @if($consultancyProjects->count() > 0)
                <div class="table-responsive">
                    <table class="table table-bordered">
                        <thead class="table-light">
                            <tr>
                                <th>Sr. No</th>
                                <th>Sponsoring Agency</th>
                                <th>Project Title</th>
                                <th>Duration</th>
                                <th>Status</th>
                                <th>Consultancy Amount</th>
                                <th>Amount (Lakhs)</th>
                                <th>Credit Points</th>
                                <th>Certificate</th>
                                @if($application->isEditable())
                                <th>Actions</th>
                                @endif
                            </tr>
                        </thead>
                        <tbody>
                            @foreach($consultancyProjects as $project)
                            <tr>
                                <td>{{ $project->serial_no }}</td>
                                <td class="fw-bold">{{ $project->sponsoring_agency }}</td>
                                <td>{{ $project->project_title }}</td>
                                <td>{{ $project->duration }}</td>
                                <td>
                                    <span class="badge badge-{{ $project->project_status === 'Ongoing' ? 'warning' : 'success' }}">
                                        {{ $project->project_status ?? 'Completed' }}
                                    </span>
                                </td>
                                <td>{{ $project->formatted_amount }}</td>
                                <td>
                                    <span class="badge badge-{{ $project->amount_in_lakhs >= 5 ? 'success' : 'warning' }}">
                                        {{ number_format($project->amount_in_lakhs, 2) }} L
                                    </span>
                                </td>
                                <td class="fw-bold text-primary">{{ number_format($project->credit_points, 2) }}</td>
                                <td>
                                    @if($project->hasDocument())
                                        <a href="{{ route('applicant.consultancy-projects.download-document', [$application, $project]) }}" 
                                           class="btn btn-sm btn-outline-primary" title="Download Certificate">
                                            <i class="fas fa-download"></i>
                                        </a>
                                    @else
                                        <span class="text-danger">No Certificate</span>
                                    @endif
                                </td>
                                @if($application->isEditable())
                                <td>
                                    <div class="btn-group" role="group">
                                        <button type="button" class="btn btn-sm btn-outline-primary" 
                                                onclick="editConsultancyProject({{ $project->id }})" title="Edit">
                                            <i class="fas fa-edit"></i>
                                        </button>
                                        <button type="button" class="btn btn-sm btn-outline-danger" 
                                                onclick="deleteConsultancyProject({{ $project->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 Projects:</strong> {{ $consultancyProjects->count() }}</p>
                                    <p class="mb-1"><strong>Total Credit Points:</strong> {{ number_format($totalCreditPoints, 2) }}</p>
                                    <p class="mb-0"><strong>Evaluation Points:</strong> {{ number_format($evaluationPoints, 2) }} / 10</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>
                                        @php
                                            $totalFiveLakhUnits = 0;
                                            $zeroPointProjects = 0;
                                            foreach($consultancyProjects as $project) {
                                                $units = floor($project->consultancy_amount / 500000);
                                                $totalFiveLakhUnits += $units;
                                                if ($units == 0) {
                                                    $zeroPointProjects++;
                                                }
                                            }
                                        @endphp
                                        <p class="mb-1"><strong>Total 5-Lakh Units:</strong> {{ $totalFiveLakhUnits }} units</p>
                                        <p class="mb-1"><strong>Points from Units:</strong> {{ $totalFiveLakhUnits * 2 }} points</p>
                                        <p class="mb-0"><strong>Projects < ₹5 Lakhs:</strong> {{ $zeroPointProjects }} (0 points)</p>
                                    </div>
                                </div>
                    </div>
                </div>
            @else
                <div class="text-center py-5">
                    <i class="fas fa-handshake fa-4x text-muted mb-3"></i>
                    <h5 class="text-muted">No Consultancy Projects Added</h5>
                    <p class="text-muted">Add your consultancy projects as PI or Co-PI to earn credit points.</p>
                    @if($application->isEditable())
                        <button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#addConsultancyModal">
                            <i class="fas fa-plus me-2"></i>Add First Consultancy Project
                        </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 Consultancy Project Modal -->
@if($application->isEditable())
<div class="modal fade" id="addConsultancyModal" tabindex="-1" aria-labelledby="addConsultancyModalLabel" aria-hidden="true">
    <div class="modal-dialog modal-xl">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="addConsultancyModalLabel">Add Consultancy Project</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <form id="consultancyForm" method="POST" enctype="multipart/form-data">
                @csrf
                <div class="modal-body">
                    <input type="hidden" id="consultancy_project_id" name="consultancy_project_id">
                    
                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="sponsoring_agency" class="form-label">Sponsoring Agency <span class="text-danger">*</span></label>
                                <input type="text" class="form-control" id="sponsoring_agency" name="sponsoring_agency" required>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="project_title" class="form-label">Project Title <span class="text-danger">*</span></label>
                                <input type="text" class="form-control" id="project_title" name="project_title" required>
                            </div>
                        </div>
                    </div>
                    
                    <div class="row">
                        <div class="col-md-4">
                            <div class="mb-3">
                                <label for="from_date" class="form-label">From Date <span class="text-danger">*</span></label>
                                <input type="date" class="form-control" id="from_date" name="from_date" required>
                            </div>
                        </div>
                        <div class="col-md-4">
                            <div class="mb-3">
                                <label for="project_status" class="form-label">Project Status <span class="text-danger">*</span></label>
                                <select class="form-control" id="project_status" name="project_status" required onchange="toggleToDateField()">
                                    <option value="Completed">Completed</option>
                                    <option value="Ongoing">Ongoing</option>
                                </select>
                            </div>
                        </div>
                        <div class="col-md-4">
                            <div class="mb-3">
                                <label for="to_date" class="form-label">To Date <span class="text-danger" id="to_date_required">*</span></label>
                                <input type="date" class="form-control" id="to_date" name="to_date" required>
                                <small class="text-muted" id="to_date_help" style="display: none;">To Date is not required for ongoing projects</small>
                            </div>
                        </div>
                    </div>
                    
                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="consultancy_amount" class="form-label">Consultancy Amount (₹) <span class="text-danger">*</span></label>
                                <input type="number" class="form-control" id="consultancy_amount" name="consultancy_amount" 
                                       step="0.01" min="0" required onchange="calculateCreditPoints()">
                                <small class="text-muted">Enter amount in rupees</small>
                            </div>
                        </div>
                        <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 amount
                                </small>
                            </div>
                        </div>
                    </div>
                    
                    <div class="mb-3">
                        <label for="certificate_document" class="form-label">Upload Certificate (PDF) <span class="text-danger">*</span></label>
                        <input type="file" class="form-control" id="certificate_document" name="certificate_document" accept=".pdf">
                        <small class="text-muted">Upload consultancy completion certificate or relevant document (PDF only, max 5MB)</small>
                    </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 Consultancy Project</button>
                </div>
            </form>
        </div>
    </div>
</div>
@endif

<script>
function toggleSkipStep(stepSlug) {
    const checkbox = document.getElementById('skip_' + stepSlug.replace('-', '_'));
    const infoSection = document.getElementById('consultancyInfoSection');
    const contentSection = document.getElementById('consultancyContentSection');
    
    if (checkbox.checked) {
        infoSection.style.display = 'none';
        contentSection.style.display = 'none';
        updateSkipStatus(stepSlug, true);
    } else {
        infoSection.style.display = 'block';
        contentSection.style.display = 'block';
        updateSkipStatus(stepSlug, false);
    }
}

function updateSkipStatus(stepSlug, skip) {
    fetch(`{{ route('applicant.applications.update-skip-status', $application) }}`, {
        method: 'POST',
        headers: {
            'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]').getAttribute('content'),
            'Content-Type': 'application/json',
        },
        body: JSON.stringify({
            step: stepSlug,
            skip: skip
        })
    })
    .then(response => response.json())
    .then(data => {
        if (!data.success) {
            console.error('Error updating skip status:', data.message);
        }
    })
    .catch(error => {
        console.error('Error:', error);
    });
}

function toggleToDateField() {
    const projectStatus = document.getElementById('project_status').value;
    const toDateField = document.getElementById('to_date');
    const toDateRequired = document.getElementById('to_date_required');
    const toDateHelp = document.getElementById('to_date_help');
    
    if (projectStatus === 'Ongoing') {
        toDateField.disabled = true;
        toDateField.required = false;
        toDateField.value = '';
        toDateRequired.style.display = 'none';
        toDateHelp.style.display = 'block';
    } else {
        toDateField.disabled = false;
        toDateField.required = true;
        toDateRequired.style.display = 'inline';
        toDateHelp.style.display = 'none';
    }
}

function calculateCreditPoints() {
    const amount = parseFloat(document.getElementById('consultancy_amount').value) || 0;
    const fiveLakhUnit = 500000; // 5 Lakhs
    const amountInLakhs = amount / 100000;
    
    // Calculate how many complete 5-lakh units are there
    const completeFiveLakhUnits = Math.floor(amount / fiveLakhUnit);
    
    // Each 5-lakh unit gives 2 credit points
    const creditPoints = completeFiveLakhUnits * 2;
    
    document.getElementById('credit_points_display').value = creditPoints;
    
    const infoElement = document.getElementById('credit_points_info');
    if (amount > 0) {
        const countedAmount = completeFiveLakhUnits * 5; // Amount in lakhs that counts
        if (creditPoints > 0) {
            infoElement.innerHTML = `Amount: ₹${amount.toLocaleString()} (${amountInLakhs.toFixed(2)} Lakhs) → ${completeFiveLakhUnits} × 5L units = ${creditPoints} Credit Points`;
            infoElement.className = 'text-success';
        } else {
            infoElement.innerHTML = `Amount: ₹${amount.toLocaleString()} (${amountInLakhs.toFixed(2)} Lakhs) → Less than 5 Lakhs = 0 Credit Points`;
            infoElement.className = 'text-warning';
        }
    } else {
        infoElement.innerHTML = 'Credit points will be calculated automatically based on amount';
        infoElement.className = 'text-muted';
    }
}

function editConsultancyProject(projectId) {
    // Fetch project data and populate modal
    fetch(`{{ route("applicant.consultancy-projects.show", [$application, "PROJECT_ID"]) }}`.replace('PROJECT_ID', projectId))
        .then(response => response.json())
        .then(data => {
            document.getElementById('consultancy_project_id').value = data.id;
            document.getElementById('sponsoring_agency').value = data.sponsoring_agency;
            document.getElementById('project_title').value = data.project_title;
            document.getElementById('from_date').value = data.from_date;
            document.getElementById('to_date').value = data.to_date || '';
            document.getElementById('project_status').value = data.project_status || 'Completed';
            document.getElementById('consultancy_amount').value = data.consultancy_amount;
            
            // Toggle to date field based on project status
            toggleToDateField();
            
            calculateCreditPoints();
            
            document.getElementById('addConsultancyModalLabel').textContent = 'Edit Consultancy Project';
            document.getElementById('consultancyForm').action = 
                `{{ route("applicant.consultancy-projects.update", [$application, "PROJECT_ID"]) }}`.replace('PROJECT_ID', projectId);
            
            // Show modal
            new bootstrap.Modal(document.getElementById('addConsultancyModal')).show();
        })
        .catch(error => {
            console.error('Error:', error);
            alert('Error loading project data');
        });
}

function deleteConsultancyProject(projectId) {
    if (confirm('Are you sure you want to delete this consultancy project?')) {
        fetch(`{{ route("applicant.consultancy-projects.destroy", [$application, "PROJECT_ID"]) }}`.replace('PROJECT_ID', projectId), {
            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 project');
            }
        })
        .catch(error => {
            console.error('Error:', error);
            alert('Error deleting project');
        });
    }
}

// Reset modal when opening for new project
document.getElementById('addConsultancyModal').addEventListener('show.bs.modal', function (event) {
    if (!event.relatedTarget || !event.relatedTarget.onclick) {
        // Reset form for new project
        document.getElementById('consultancyForm').reset();
        document.getElementById('consultancy_project_id').value = '';
        document.getElementById('project_status').value = 'Completed';
        document.getElementById('addConsultancyModalLabel').textContent = 'Add Consultancy Project';
        document.getElementById('consultancyForm').action = '{{ route("applicant.consultancy-projects.store", $application) }}';
        document.getElementById('credit_points_display').value = '';
        document.getElementById('credit_points_info').innerHTML = 'Credit points will be calculated automatically based on amount';
        document.getElementById('credit_points_info').className = 'text-muted';
        
        // Reset to date field
        toggleToDateField();
    }
});

// Handle form submission
document.getElementById('consultancyForm').addEventListener('submit', function(e) {
    e.preventDefault();
    
    const formData = new FormData(this);
    const isEdit = document.getElementById('consultancy_project_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 project: ' + (data.message || 'Unknown error'));
        }
    })
    .catch(error => {
        console.error('Error:', error);
        alert('Error saving project');
    });
});
</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;
}

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

.alert {
    border: none;
    border-radius: 0.5rem;
}

.form-control:disabled {
    background-color: #f8f9fa;
    opacity: 0.6;
    cursor: not-allowed;
}

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

.badge-success {
    background-color: #28a745;
    color: #fff;
}
</style>
@endsection