@extends('layouts.app')

@section('content')
<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-6">
    <div class="bg-white overflow-hidden shadow sm:rounded-lg">
        <div class="px-4 py-5 sm:px-6">
            <h3 class="text-xl leading-6 font-semibold text-gray-900">
                Edit Publication
            </h3>
        </div>

        <div class="px-4 py-5 sm:p-6">
            @if ($errors->any())
            <div class="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded mb-4">
                <ul>
                    @foreach ($errors->all() as $error)
                    <li>{{ $error }}</li>
                    @endforeach
                </ul>
            </div>
            @endif

            <form action="{{ request()->is('admin/*') ? route('admin.Publications.update', $publication->id) : (request()->is('coordinator/*') ? route('coordinator.Publications.update', $publication->id) : route('faculty.Publications.update', $publication->id)) }}" method="POST" enctype="multipart/form-data">
                @csrf
                @method('PUT')
                <div class="space-y-6">
                    <!-- Author Information -->
                    <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
                        <div>
                            <label for="first_author_name" class="block text-sm font-medium text-gray-700">First Author Name</label>
                            <select id="first_author_name" name="first_author_name[]" class="block w-full mt-1 border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500 sm:text-sm" multiple="multiple"></select>
                            <input type="hidden" id="first_author_name_hidden" name="first_author_name" />
                        </div>
                        <div>
                            <label for="co_authors" class="block text-sm font-medium text-gray-700">Co-Authors (if any)</label>
                            <select id="co_authors" name="co_authors[]" class="block w-full mt-1 border-gray-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500 sm:text-sm" multiple="multiple"></select>
                            <input type="hidden" id="co_authors_hidden" name="co_authors" />
                        </div>
                    </div>

                    <!-- Publication Title -->
                    <div>
                        <label for="title" class="block text-sm font-medium text-gray-700">Publication Title</label>
                        <input type="text" name="title" id="title" value="{{ old('title', $publication->title) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Publication Venue Information -->
                    <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
                        <div>
                            <label for="affiliation" class="block text-sm font-medium text-gray-700">Conference/Journal Name</label>
                            <input type="text" name="affiliation" id="affiliation" value="{{ old('affiliation', $publication->affiliation) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                        </div>
                        <div>
                        <label for="organizing_institute" class="block text-sm font-medium text-gray-700">Organising Institute</label>
                        <select name="organizing_institute" id="organizing_institute" class="mt-1 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md select2" style="width: 100%;">
                            <option value="">Select or type...</option>
                            @foreach($organisingInstitutes as $institute)
                                <option value="{{ $institute }}" {{ old('organizing_institute', $publication->organizing_institute) == $institute ? 'selected' : '' }}>{{ $institute }}</option>
                            @endforeach
                        </select>
                    </div>
                    </div>

                    <div>
                        <label for="venue_address" class="block text-sm font-medium text-gray-700">Venue Address</label>
                        <input type="text" name="venue_address" id="venue_address" value="{{ old('venue_address', $publication->venue_address) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                    </div>

                    <!-- Department and Faculty Name -->
                    <div class="grid grid-cols-2 sm:grid-cols-2 gap-4">
                        <div>
                            <label for="department" class="block text-sm font-medium text-gray-700">Department</label>
                            <input type="text" name="department" id="department" value="{{ $publication->department->name ?? 'Unknown' }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md bg-gray-100" disabled>
                        </div>
                        <div>
                            <label for="faculty_name" class="block text-sm font-medium text-gray-700">Faculty Name</label>
                            <input type="text" name="faculty_name" id="faculty_name" value="{{ $publication->user->name ?? 'Unknown' }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md bg-gray-100" disabled>
                        </div>
                    </div>

                    <!-- Date Information -->
                    <div class="grid grid-cols-2 gap-4">
                        <div>
                            <label for="start_date" class="block text-sm font-medium text-gray-700">Start Date</label>
                            <input type="date" name="start_date" id="start_date" value="{{ old('start_date', \Carbon\Carbon::parse($publication->start_date)->format('Y-m-d')) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required onchange="calculateDays()">
                        </div>
                        <div>
                            <label for="end_date" class="block text-sm font-medium text-gray-700">End Date</label>
                            <input type="date" name="end_date" id="end_date" value="{{ old('end_date', \Carbon\Carbon::parse($publication->end_date)->format('Y-m-d')) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required onchange="calculateDays()">
                        </div>
                        <div>
                            <label for="num_days" class="block text-sm font-medium text-gray-700">Number of Days</label>
                            <input type="text" name="num_days" id="num_days" value="{{ old('num_days', $publication->num_days) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md bg-gray-100" readonly>
                        </div>
                    </div>

                    <!-- Time Fields -->
                    <div class="grid grid-cols-2 gap-4">
                        <div>
                            <label for="start_time" class="block text-sm font-medium text-gray-700">Start Time</label>
                            <input type="time" name="start_time" id="start_time" value="{{ old('start_time', \Carbon\Carbon::parse($publication->start_date)->format('H:i')) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                        </div>
                        <div>
                            <label for="end_time" class="block text-sm font-medium text-gray-700">End Time</label>
                            <input type="time" name="end_time" id="end_time" value="{{ old('end_time', \Carbon\Carbon::parse($publication->end_date)->format('H:i')) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                        </div>
                    </div>

                    <!-- Publication Type -->
                    <div>
                        <label for="activity_type" class="block text-sm font-medium text-gray-700">Select Publication Type</label>
                        <select name="activity_type" id="activity_type" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                            <option value="">Select</option>
                            @if(isset($dropdowns['publication_types']) && is_array($dropdowns['publication_types']))
                                @foreach($dropdowns['publication_types'] as $key => $label)
                                    <option value="{{ $key }}" {{ old('activity_type', $publication->activity_type) == $key ? 'selected' : '' }}>{{ $label }}</option>
                                @endforeach
                            @else
                                <option value="journal" {{ old('activity_type', $publication->activity_type) == 'journal' ? 'selected' : '' }}>Journal Paper</option>
                                <option value="conference" {{ old('activity_type', $publication->activity_type) == 'conference' ? 'selected' : '' }}>Conference Paper</option>
                                <option value="book" {{ old('activity_type', $publication->activity_type) == 'book' ? 'selected' : '' }}>Book/Book Chapter</option>
                                <option value="magazine" {{ old('activity_type', $publication->activity_type) == 'magazine' ? 'selected' : '' }}>Magazine Article</option>
                                <option value="other" {{ old('activity_type', $publication->activity_type) == 'other' ? 'selected' : '' }}>Other</option>
                            @endif
                        </select>
                    </div>

                    <!-- Publication Quality -->
                    <div class="grid grid-cols-1 sm:grid-cols-3 gap-4">
                        <div>
                            <label for="is_peer_reviewed" class="block text-sm font-medium text-gray-700">Peer Reviewed</label>
                            <select name="is_peer_reviewed" id="is_peer_reviewed" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                                <option value="yes" {{ old('is_peer_reviewed', $publication->is_peer_reviewed) == 'yes' ? 'selected' : '' }}>Yes</option>
                                <option value="no" {{ old('is_peer_reviewed', $publication->is_peer_reviewed) == 'no' ? 'selected' : '' }}>No</option>
                            </select>
                        </div>
                        <div>
                            <label for="scopus_link" class="block text-sm font-medium text-gray-700">Scopus Link (if indexed)</label>
                            <input type="url" name="scopus_link" id="scopus_link" value="{{ old('scopus_link', $publication->scopus_link) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" placeholder="https://www.scopus.com/...">
                        </div>
                        <div>
                            <label for="sci_link" class="block text-sm font-medium text-gray-700">SCI Link (if indexed)</label>
                            <input type="url" name="sci_link" id="sci_link" value="{{ old('sci_link', $publication->sci_link) }}" class="mt-1 focus:ring-indigo-500 focus:border-indigo-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" placeholder="https://www.webofscience.com/...">
                        </div>
                    </div>

                    <!-- Paper File -->
                    <div>
                        <label for="paper_file" class="block text-sm font-medium text-gray-700">Upload Paper</label>
                        @if ($publication->paper_file)
                        <div class="mb-2">
                            <span class="text-sm text-gray-600">Current file:</span>
                            <a href="{{ asset('storage/' . $publication->paper_file) }}" target="_blank" class="ml-2 text-blue-600 hover:text-blue-800">View</a>
                        </div>
                        @endif
                        <input type="file" name="paper_file" id="paper_file" class="mt-1 block w-full text-sm text-gray-500
                            file:mr-4 file:py-2 file:px-4
                            file:rounded-full file:border-0
                            file:text-sm file:font-semibold
                            file:bg-blue-50 file:text-blue-700
                            hover:file:bg-blue-100">
                        <p class="mt-1 text-xs text-gray-500">Accepted formats: JPG, JPEG, PNG, PDF, DOC, DOCX, ZIP</p>
                    </div>
                </div>

                <!-- Submit Button -->
                <div class="mt-6 flex items-center justify-end">
                    <a href="{{ request()->is('admin/*') ? route('admin.PublicationsResponses') : (request()->is('coordinator/*') ? route('coordinator.PublicationsResponses') : route('faculty.PublicationsResponses')) }}" class="bg-gray-200 py-2 px-4 border border-gray-300 rounded-md shadow-sm text-sm font-medium text-gray-700 hover:bg-gray-300 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-gray-500 mr-3">
                        Cancel
                    </a>
                    <button type="submit" class="inline-flex justify-center py-2 px-4 border border-transparent text-sm font-medium rounded-md text-white bg-black">
                        Update
                    </button>
                </div>
            </form>
        </div>
    </div>
</div>

<script>
    function calculateDays() {
        const startDate = new Date(document.getElementById('start_date').value);
        const endDate = new Date(document.getElementById('end_date').value);
        if (startDate && endDate) {
            const diffTime = Math.abs(endDate - startDate);
            const numDays = Math.ceil(diffTime / (1000 * 60 * 60 * 24)) + 1; // +1 to include both start and end days
            document.getElementById('num_days').value = numDays;
        }
    }

    // Calculate days on page load
    document.addEventListener('DOMContentLoaded', function() {
        calculateDays();

        const OldFirstAuthorNameData = {!! json_encode(explode(', ', old('first_author_name', $publication->first_author_name))) !!};

        $('#first_author_name').select2({
            tags: true,
            tokenSeparators: [','],
            ajax: {
                url: '{{ route('api.users.index') }}',
                dataType: 'json',
                delay: 250,
                processResults: function (data) {
                    return {
                        results: data.map(user => ({ id: user.name, text: user.name }))
                    };
                },
                cache: true
            }
        });

        $('#organizing_institute').select2({
            tags: true,
            placeholder: "Select or Type...",
            allowClear: true
        });

        // Prepopulate with old data
        OldFirstAuthorNameData.forEach(function (item) {
            const option = new Option(item, item, true, true);
            $('#first_author_name').append(option).trigger('change');
        });

        $('#first_author_name').on('change', function () {
            const selectedValues = $(this).val();
            document.getElementById('first_author_name_hidden').value = selectedValues.join(', ');
        });
        const OldCoAuthorData = {!! json_encode(explode(', ', old('co_authors', $publication->co_authors))) !!};

        $('#co_authors').select2({
            tags: true,
            tokenSeparators: [','],
            ajax: {
                url: '{{ route('api.users.index') }}',
                dataType: 'json',
                delay: 250,
                processResults: function (data) {
                    return {
                        results: data.map(user => ({ id: user.name, text: user.name }))
                    };
                },
                cache: true
            }
        });

        // Prepopulate with old data
        OldCoAuthorData.forEach(function (item) {
            const option = new Option(item, item, true, true);
            $('#co_authors').append(option).trigger('change');
        });

        $('#co_authors').on('change', function () {
            const selectedValues = $(this).val();
            document.getElementById('co_authors_hidden').value = selectedValues.join(', ');
        });
    });

    document.addEventListener('DOMContentLoaded', function () {
        const firstAuthorNameSelect = document.getElementById('first_author_name');
        const firstAuthorNameHidden = document.getElementById('first_author_name_hidden');
        const CoAuthorsNameSelect = document.getElementById('co_authors');
        const CoAuthorsNameHidden = document.getElementById('co_authors_hidden');

        // Populate hidden input with existing values on page load
        if (firstAuthorNameSelect) {
            const existingValues = $(firstAuthorNameSelect).val();
            firstAuthorNameHidden.value = existingValues ? existingValues.join(', ') : '';
        }

        if (CoAuthorsNameSelect) {
            const existingValues = $(CoAuthorsNameSelect).val();
            CoAuthorsNameHidden.value = existingValues ? existingValues.join(', ') : '';
        }
        
        const form = document.querySelector('form');
        form.addEventListener('submit', function () {
            if (firstAuthorNameSelect) {
                const selectedValues = $(firstAuthorNameSelect).val();
                firstAuthorNameHidden.value = selectedValues ? selectedValues.join(', ') : '';
            }
            if (CoAuthorsNameSelect) {
                const selectedValues = $(CoAuthorsNameSelect).val();
                CoAuthorsNameHidden.value = selectedValues ? selectedValues.join(', ') : '';
            }
        });
    });
</script>
@endsection