@include('header')
<style>
#drop-area {
    border: 2px dashed #6c757d;
    border-radius: 12px;
    padding: 30px;
    background: #f8f9fa;
    text-align: center;
    cursor: pointer;
    transition: 0.3s;
}

#drop-area.dragover {
    background: #e7f1ff;
    border-color: #0d6efd;
}

#drop-area .browse {
    color: #0d6efd;
    font-weight: 600;
    text-decoration: underline;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 15px;
}

.preview-item {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
}

.preview-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.preview-item span {
    position: absolute;
    top: 6px;
    right: 6px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    text-align: center;
    line-height: 22px;
    cursor: pointer;
}
</style>

<!--**********************************
            Content body start
        ***********************************-->
<div class="content-body">
    <div class="page-titles">
        <h5 class="dashboard_bar">placement Information</h5>
        <ul class="breadcrumb">
            <li class="breadcrumb-item"><a href="#">
                    Dashboard </a>
            </li>
            <li class="breadcrumb-item active"><a href="javascript:void(0)">Edit placement</a></li>
        </ul>
    </div>
    <div class="container">
        <!-- row -->
        <div class="row">
            <div class="col-lg-12">
                <div class="card">
                    <div class="card-header">
                        <h4 class="card-title">placement</h4>
                    </div>
                    <div class="card-body">
                        <div class="form-validation">
                            <form id="placementForm" class="needs-validation" enctype="multipart/form-data" novalidate>
                                @csrf
                                @if(isset($placement->id))
                                @method('PUT')
                                @endif

                                <div class="row">

                                    <!-- LEFT SIDE -->
                                    <div class="col-xl-6">


                                        <!-- Placement Faculty Dropdown -->
                                        <div class="mb-3 row">
                                            <label class="col-lg-4 col-form-label">Placement Faculty <span
                                                    class="text-danger">*</span></label>
                                            <div class="col-lg-8">
                                                <select id="faculty_id" name="faculty_id" class="form-control faculty-select">
                                                    <option value="">Select Faculty</option>
                                                    @foreach($faculties as $f)
                                                    <option value="{{ $f->id }}"
                                                        {{ (isset($placement->faculty_id) && $placement->faculty_id == $f->id) ? 'selected' : '' }}>
                                                        {{ $f->name }}
                                                    </option>
                                                    @endforeach
                                                </select>
                                            </div>
                                        </div>

                                        <!-- Counselling Faculty Dropdown -->
                                        <div class="mb-3 row">
                                            <label class="col-lg-4 col-form-label">Counselling Faculty <span
                                                    class="text-danger">*</span></label>
                                            <div class="col-lg-8">
                                                <select id="counselling_faculty_id" name="counselling_faculty_id" class="form-control faculty-select">
                                                    <option value="">Select Faculty</option>
                                                    @foreach($faculties as $f)
                                                    <option value="{{ $f->id }}"
                                                        {{ (isset($placement->counselling_faculty_id) && $placement->counselling_faculty_id == $f->id) ? 'selected' : '' }}>
                                                        {{ $f->name }}
                                                    </option>
                                                    @endforeach
                                                </select>
                                            </div>
                                        </div>




                                        <!-- Image -->
                                        <div class="mb-3 row">
                                            <label class="col-lg-4 col-form-label">Recruiter Logos</label>

                                            <div class="col-lg-8">
                                                <div id="drop-area">
                                                    <p>
                                                        Drag & drop logos here<br>
                                                        or <span class="browse">Click to choose</span>
                                                    </p>
                                                    <input type="file" id="recruiters" name="recruiters[]" multiple
                                                        accept="image/*" hidden>
                                                </div>

                                                <div id="preview" class="preview-grid">
                                                    {{-- Existing images --}}
                                                    @if(!empty($placement->recruiters))
                                                    @foreach($placement->recruiters as $image)
                                                    <div class="preview-item" data-is-new="false">
                                                        <img src="{{ asset($image) }}">
                                                        <span class="remove-existing">&times;</span>
                                                        <input type="hidden" name="old_recruiters[]"
                                                            value="{{ $image }}">
                                                    </div>
                                                    @endforeach
                                                    @endif
                                                </div>

                                            </div>
                                        </div>
                                        <div class="mb-3 row">
                                            <div class="col-lg-8 ms-auto">
                                                <button type="submit" class="btn btn-primary">Save</button>
                                            </div>
                                        </div>



                                    </div>
                                </div>
                            </form>






                        </div>
                    </div>
                </div>
            </div>

        </div>
    </div>
</div>
@include('footer')
<script>
$('.faculty-select').select2({
    placeholder: "Search faculty...",
    allowClear: true,
    width: '100%'
});
$(document).ready(function() {
    const dropArea = document.getElementById('drop-area');
    const input = document.getElementById('recruiters');
    const preview = document.getElementById('preview');
    let selectedFiles = []; // Track new files only

    // --- Drag & Drop / Click ---
    dropArea.addEventListener('click', () => input.click());
    dropArea.addEventListener('dragover', e => { e.preventDefault(); dropArea.classList.add('dragover'); });
    dropArea.addEventListener('dragleave', () => dropArea.classList.remove('dragover'));
    dropArea.addEventListener('drop', e => { e.preventDefault(); dropArea.classList.remove('dragover'); addFiles(e.dataTransfer.files); });

    input.addEventListener('change', () => { addFiles(input.files); input.value = ''; });

    function addFiles(files) {
        Array.from(files).forEach(file => {
            if (!file.type.startsWith('image/')) return;

            // Assign a unique id for this file
            const fileId = 'file-' + Date.now() + '-' + Math.random().toString(36).substr(2,5);
            file.fileId = fileId; // attach unique id to file object
            selectedFiles.push(file);
            previewNewImage(file);
        });
    }

    function previewNewImage(file) {
        const reader = new FileReader();
        reader.onload = e => {
            const div = document.createElement('div');
            div.className = 'preview-item';
            div.dataset.isNew = 'true';
            div.dataset.fileId = file.fileId;
            div.innerHTML = `
                <img src="${e.target.result}">
                <span class="remove-new">&times;</span>
            `;
            preview.appendChild(div);
        };
        reader.readAsDataURL(file);
    }

    // --- Remove new file ---
    $(document).on('click', '.remove-new', function() {
        const parent = this.parentElement;
        const fileId = parent.dataset.fileId;
        selectedFiles = selectedFiles.filter(f => f.fileId !== fileId); // remove from array
        parent.remove();
    });

    // --- Remove existing image ---
   $(document).on('click', '.remove-existing', function() {
    const parent = $(this).closest('.preview-item');
    const oldInput = parent.find('input[type="hidden"]'); // get old image input
    const removedInput = $('<input>')
        .attr('type', 'hidden')
        .attr('name', 'removed_recruiters[]')
        .val(oldInput.val());
    
    $('#placementForm').append(removedInput); // add to form
    parent.remove(); // remove from preview
});


    // --- Form submission ---
    $('#placementForm').on('submit', function(e) {
        e.preventDefault();
        let formData = new FormData(this);

        // Append all new files
        selectedFiles.forEach(file => { formData.append('recruiters[]', file); });

        // Spoof PUT for Laravel
        formData.append('_method', 'PUT');

        $.ajax({
            url: "{{ isset($placement) ? route('placement.update', $placement->id) : '' }}",
            method: "POST",
            data: formData,
            processData: false,
            contentType: false,
            success: function(response) {
                Swal.fire({
                    icon: 'success',
                    title: 'Updated!',
                    text: response.message,
                    timer: 2000,
                    showConfirmButton: true
                }).then(() => {
                    window.location.href='{{ route("placement.manage") }}';
                });
            },
            error: function(xhr) {
                $('.text-danger').text('');
                if(xhr.status===422){
                    $.each(xhr.responseJSON.errors, function(key,value){
                        $('.error-'+key).text(value[0]);
                    });
                } else {
                    Swal.fire({icon:'error', title:'Error!', text:'Something went wrong.'});
                }
            }
        });
    });
});

</script>