@extends('layouts.app')
@section('title', '설비 수정')
@section('content')

<div class="max-w-4xl mx-auto">
    <div class="flex justify-between items-center mb-6">
        <h1 class="text-2xl font-bold text-gray-800">설비 수정</h1>
        <a href="{{ route('equipment.index') }}" class="text-gray-600 hover:text-gray-800">
            &larr; 목록으로
        </a>
    </div>

    <!-- 로딩 상태 -->
    <div id="loadingState" class="bg-white rounded-lg shadow-sm p-6">
        <div class="flex justify-center items-center p-12">
            <div class="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600"></div>
        </div>
    </div>

    <!-- 폼 -->
    <div id="formContainer" style="display: none;">
        <form id="equipmentForm" class="space-y-6">
            @csrf

            <!-- 기본정보 -->
            <div class="bg-white rounded-lg shadow-sm p-6">
                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">기본정보</h2>
                <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">
                            설비코드 <span class="text-red-500">*</span>
                        </label>
                        <input type="text" name="equipment_code" id="equipment_code" required
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">
                            설비명 <span class="text-red-500">*</span>
                        </label>
                        <input type="text" name="name" id="name" required
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">설비유형</label>
                        <select name="equipment_type" id="equipment_type"
                                class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                            <option value="">선택</option>
                            <option value="포밍기">포밍기</option>
                            <option value="미싱기">미싱기</option>
                            <option value="샤링기">샤링기</option>
                            <option value="V컷팅기">V컷팅기</option>
                            <option value="절곡기">절곡기</option>
                            <option value="프레스">프레스</option>
                            <option value="드릴">드릴</option>
                            <option value="기타">기타</option>
                        </select>
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">규격</label>
                        <input type="text" name="specification" id="specification"
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                </div>
            </div>

            <!-- 제조사 정보 -->
            <div class="bg-white rounded-lg shadow-sm p-6">
                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">제조사 정보</h2>
                <div class="grid grid-cols-1 md:grid-cols-3 gap-4">
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">제조사</label>
                        <input type="text" name="manufacturer" id="manufacturer"
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">모델명</label>
                        <input type="text" name="model_name" id="model_name"
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">제조번호</label>
                        <input type="text" name="serial_no" id="serial_no"
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                </div>
            </div>

            <!-- 설치 정보 -->
            <div class="bg-white rounded-lg shadow-sm p-6">
                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">설치 정보</h2>
                <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">위치</label>
                        <input type="text" name="location" id="location"
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">생산라인</label>
                        <select name="production_line" id="production_line"
                                class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                            <option value="">선택</option>
                            <option value="스라트">스라트</option>
                            <option value="스크린">스크린</option>
                            <option value="절곡">절곡</option>
                            <option value="기타">기타</option>
                        </select>
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">구입일</label>
                        <input type="date" name="purchase_date" id="purchase_date"
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">설치일</label>
                        <input type="date" name="install_date" id="install_date"
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">구입가격 (원)</label>
                        <input type="number" name="purchase_price" id="purchase_price" min="0" step="1"
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">내용연수 (년)</label>
                        <input type="number" name="useful_life" id="useful_life" min="0"
                               class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                    </div>
                </div>
            </div>

            <!-- 담당자/비고 -->
            <div class="bg-white rounded-lg shadow-sm p-6">
                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">관리자 / 비고</h2>
                <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">관리자 정</label>
                        <select name="manager_id" id="manager_id"
                                class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                            <option value="">선택</option>
                            @foreach($users as $user)
                                <option value="{{ $user->id }}">{{ $user->name }}</option>
                            @endforeach
                        </select>
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">관리자 부</label>
                        <select name="sub_manager_id" id="sub_manager_id"
                                class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                            <option value="">선택</option>
                            @foreach($users as $user)
                                <option value="{{ $user->id }}">{{ $user->name }}</option>
                            @endforeach
                        </select>
                    </div>
                    <div>
                        <label class="block text-sm font-semibold text-gray-700 mb-2">상태</label>
                        <select name="status" id="status"
                                class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
                            <option value="active">가동</option>
                            <option value="idle">유휴</option>
                            <option value="disposed">폐기</option>
                        </select>
                    </div>
                </div>
                <div class="mt-4">
                    <label class="block text-sm font-semibold text-gray-700 mb-2">비고</label>
                    <textarea name="memo" id="memo" rows="3"
                              class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500"></textarea>
                </div>
            </div>

            <!-- 사진 관리 -->
            <div class="bg-white rounded-lg shadow-sm p-6">
                <h2 class="text-lg font-semibold text-gray-800 mb-4 pb-2 border-b">설비 사진</h2>
                <p class="text-sm text-gray-500 mb-3">최대 10장, 각 10MB 이하 이미지 파일</p>
                <div id="photoDropzone"
                     class="border-2 border-dashed border-gray-300 rounded-lg p-6 text-center cursor-pointer hover:border-blue-400 transition">
                    <svg class="mx-auto h-10 w-10 text-gray-400 mb-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16l4.586-4.586a2 2 0 012.828 0L16 16m-2-2l1.586-1.586a2 2 0 012.828 0L20 14m-6-6h.01M6 20h12a2 2 0 002-2V6a2 2 0 00-2-2H6a2 2 0 00-2 2v12a2 2 0 002 2z"/>
                    </svg>
                    <p class="text-gray-500">클릭하거나 파일을 드래그하세요</p>
                    <p class="text-xs text-gray-400 mt-1">Ctrl+V로 클립보드 이미지 붙여넣기 가능</p>
                    <input type="file" id="photoInput" multiple accept="image/*" class="hidden">
                </div>
                <div id="photoUploadProgress" class="mt-3" style="display: none;">
                    <div class="w-full bg-gray-200 rounded-full h-2">
                        <div id="photoProgressBar" class="bg-blue-600 h-2 rounded-full transition-all" style="width: 0%"></div>
                    </div>
                    <p class="text-sm text-gray-500 mt-1" id="photoProgressText">업로드 중...</p>
                </div>
                <div id="photoGallery" class="grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 gap-3 mt-4"></div>
            </div>

            <!-- 버튼 -->
            <div class="flex gap-3">
                <button type="submit" class="bg-blue-600 hover:bg-blue-700 text-white px-6 py-2 rounded-lg transition">
                    수정
                </button>
                <a href="{{ route('equipment.index') }}"
                   class="bg-gray-200 hover:bg-gray-300 text-gray-800 px-6 py-2 rounded-lg transition">
                    취소
                </a>
            </div>
        </form>
    </div>
</div>

@endsection

@push('scripts')
<script>
    const equipmentId = {{ $id }};
    const csrfToken = '{{ csrf_token() }}';
    const fields = ['equipment_code', 'name', 'equipment_type', 'specification', 'manufacturer',
        'model_name', 'serial_no', 'location', 'production_line', 'purchase_date', 'install_date',
        'purchase_price', 'useful_life', 'status', 'manager_id', 'sub_manager_id', 'memo'];

    // 설비 데이터 로드
    fetch(`/api/admin/equipment/${equipmentId}`, {
        headers: { 'Accept': 'application/json', 'X-CSRF-TOKEN': csrfToken }
    })
    .then(r => r.json())
    .then(data => {
        if (data.success) {
            const eq = data.data;
            fields.forEach(f => {
                const el = document.getElementById(f);
                if (el && eq[f] != null) el.value = eq[f];
            });
            document.getElementById('loadingState').style.display = 'none';
            document.getElementById('formContainer').style.display = 'block';
            loadPhotos();
        } else {
            showToast('설비 정보를 불러올 수 없습니다.', 'error');
            window.location.href = '{{ route("equipment.index") }}';
        }
    });

    document.getElementById('equipmentForm').addEventListener('submit', function(e) {
        e.preventDefault();
        const formData = new FormData(this);
        const data = Object.fromEntries(formData.entries());

        fetch(`/api/admin/equipment/${equipmentId}`, {
            method: 'PUT',
            headers: {
                'Content-Type': 'application/json',
                'X-CSRF-TOKEN': csrfToken,
                'Accept': 'application/json',
            },
            body: JSON.stringify(data)
        })
        .then(r => r.json())
        .then(data => {
            if (data.success) {
                showToast(data.message, 'success');
                window.location.href = '{{ route("equipment.index") }}';
            } else {
                showToast(data.message || '수정에 실패했습니다.', 'error');
            }
        })
        .catch(() => showToast('서버 오류가 발생했습니다.', 'error'));
    });

    // 사진 로드
    function loadPhotos() {
        fetch(`/api/admin/equipment/${equipmentId}/photos`, {
            headers: { 'Accept': 'application/json', 'X-CSRF-TOKEN': csrfToken }
        })
        .then(r => r.json())
        .then(data => { if (data.success) renderPhotos(data.data); });
    }

    // 사진 드래그앤드롭
    const dropzone = document.getElementById('photoDropzone');
    const photoInput = document.getElementById('photoInput');

    dropzone.addEventListener('click', () => photoInput.click());
    dropzone.addEventListener('dragover', (e) => { e.preventDefault(); dropzone.classList.add('border-blue-400', 'bg-blue-50'); });
    dropzone.addEventListener('dragleave', () => { dropzone.classList.remove('border-blue-400', 'bg-blue-50'); });
    dropzone.addEventListener('drop', (e) => {
        e.preventDefault();
        dropzone.classList.remove('border-blue-400', 'bg-blue-50');
        if (e.dataTransfer.files.length) uploadPhotos(e.dataTransfer.files);
    });
    photoInput.addEventListener('change', (e) => { if (e.target.files.length) uploadPhotos(e.target.files); });

    // Ctrl+V 클립보드 이미지 붙여넣기
    document.addEventListener('paste', (e) => {
        const items = e.clipboardData?.items;
        if (!items || !items.length) return;
        const imageFiles = [];
        for (let i = 0; i < items.length; i++) {
            if (items[i].kind === 'file' && items[i].type.startsWith('image/')) {
                const file = items[i].getAsFile();
                if (file) imageFiles.push(file);
            }
        }
        if (imageFiles.length > 0) {
            e.preventDefault();
            uploadPhotos(imageFiles);
        }
    });

    function uploadPhotos(files) {
        const formData = new FormData();
        for (let f of files) formData.append('photos[]', f);

        document.getElementById('photoUploadProgress').style.display = 'block';
        const xhr = new XMLHttpRequest();
        xhr.upload.addEventListener('progress', (e) => {
            if (e.lengthComputable) {
                const pct = Math.round((e.loaded / e.total) * 100);
                document.getElementById('photoProgressBar').style.width = pct + '%';
                document.getElementById('photoProgressText').textContent = pct + '% 업로드 중...';
            }
        });
        xhr.addEventListener('load', () => {
            document.getElementById('photoUploadProgress').style.display = 'none';
            const res = JSON.parse(xhr.responseText);
            if (res.success) {
                showToast(res.message, 'success');
                renderPhotos(res.data.photos);
            } else {
                showToast(res.message || '업로드 실패', 'error');
            }
            photoInput.value = '';
        });
        xhr.open('POST', `/api/admin/equipment/${equipmentId}/photos`);
        xhr.setRequestHeader('X-CSRF-TOKEN', csrfToken);
        xhr.setRequestHeader('Accept', 'application/json');
        xhr.send(formData);
    }

    function renderPhotos(photos) {
        const gallery = document.getElementById('photoGallery');
        gallery.innerHTML = '';
        photos.forEach(p => {
            const div = document.createElement('div');
            div.className = 'relative group';
            div.innerHTML = `
                <img src="${p.url}" alt="${p.original_name}" class="w-full h-32 object-cover rounded-lg border">
                <button type="button" onclick="deletePhoto(${p.id}, this)"
                    class="absolute top-1 right-1 bg-red-600 text-white rounded-full w-6 h-6 flex items-center justify-center text-xs opacity-0 group-hover:opacity-100 transition">X</button>
                <p class="text-xs text-gray-500 mt-1 truncate">${p.original_name}</p>
            `;
            gallery.appendChild(div);
        });
    }

    function deletePhoto(fileId, btn) {
        if (!confirm('이 사진을 삭제하시겠습니까?')) return;
        fetch(`/api/admin/equipment/${equipmentId}/photos/${fileId}`, {
            method: 'DELETE',
            headers: { 'X-CSRF-TOKEN': csrfToken, 'Accept': 'application/json' }
        })
        .then(r => r.json())
        .then(data => {
            if (data.success) {
                btn.closest('.relative').remove();
                showToast('사진이 삭제되었습니다.', 'success');
            }
        });
    }
</script>
@endpush