@extends('layouts.cp')
@section('title', 'User Guide — Web')

@section('content')

<div class="bg-white rounded-xl border border-gray-200 p-6">
    <div class="mb-6 flex items-center justify-between">
        <div>
            <h2 class="text-sm font-medium text-gray-900">User Guide</h2>
            <p class="text-xs text-gray-500 mt-1">Manage feature guides shown on main app dashboard.</p>
        </div>
        <button onclick="openAddModal()"
                class="text-xs px-3 py-1.5 bg-gray-900 text-white rounded-lg hover:bg-gray-700">
            + Add Section
        </button>
    </div>

    @if($sections->isEmpty())
        <p class="text-sm text-gray-400 text-center py-8">No guide sections yet. Add one to get started.</p>
    @else
        @foreach($sections as $category => $items)
        <div class="mb-6">
            <h3 class="text-xs font-semibold text-gray-400 uppercase tracking-wider mb-3 px-1">{{ $category }}</h3>
            <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-3">
                @foreach($items as $section)
                <div class="border border-gray-100 rounded-xl p-4 {{ $section->is_active ? '' : 'opacity-50' }}">
                    <div class="flex items-start justify-between mb-2">
                        <div class="flex-1">
                            <p class="text-sm font-medium text-gray-800">{{ $section->title }}</p>
                            <p class="text-xs text-gray-400 mt-0.5">{{ $section->feature_slug }}</p>
                        </div>
                        <span class="text-xs px-2 py-0.5 rounded-full ml-2 {{ $section->is_active ? 'bg-green-50 text-green-600' : 'bg-gray-100 text-gray-400' }}">
                            {{ $section->is_active ? 'Active' : 'Inactive' }}
                        </span>
                    </div>
                    @if($section->short_desc)
                        <p class="text-xs text-gray-500 mb-3 line-clamp-2">{{ $section->short_desc }}</p>
                    @endif
                    <p class="text-xs text-gray-300 mb-3">{{ count($section->steps ?? []) }} steps</p>
                    <div class="flex gap-2">
                        <button onclick="openEditModal({{ $section->id }})"
                                class="text-xs px-2.5 py-1 border border-blue-200 bg-blue-50 text-blue-700 rounded-lg hover:bg-blue-100">
                            Edit
                        </button>
                        <button onclick="toggleSection({{ $section->id }})"
                                class="text-xs px-2.5 py-1 border border-gray-200 text-gray-600 rounded-lg hover:bg-gray-50">
                            {{ $section->is_active ? 'Disable' : 'Enable' }}
                        </button>
                        <button onclick="deleteSection({{ $section->id }}, '{{ addslashes($section->title) }}')"
                                class="text-xs px-2.5 py-1 border border-red-200 bg-red-50 text-red-600 rounded-lg hover:bg-red-100">
                            Delete
                        </button>
                    </div>
                </div>
                @endforeach
            </div>
        </div>
        @endforeach
    @endif
</div>

{{-- Add/Edit Modal --}}
<div id="guide-modal" class="fixed inset-0 z-50 hidden">
    <div class="absolute inset-0 bg-black/30" onclick="closeModal()"></div>
    <div class="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 bg-white rounded-2xl shadow-xl w-full max-w-2xl p-6 max-h-[90vh] overflow-y-auto">
        <div class="flex items-center justify-between mb-5">
            <h3 id="modal-title" class="text-sm font-semibold text-gray-900">Add Guide Section</h3>
            <button onclick="closeModal()" class="text-gray-400 hover:text-gray-600">
                <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M6 18L18 6M6 6l12 12"/>
                </svg>
            </button>
        </div>

        <div class="grid grid-cols-2 gap-4 mb-4">
            <div>
                <label class="block text-xs text-gray-500 mb-1">Category</label>
                <input type="text" id="f-category" placeholder="e.g. Uang Muka"
                       class="w-full border border-gray-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-gray-200">
            </div>
            <div>
                <label class="block text-xs text-gray-500 mb-1">Feature Slug</label>
                <input type="text" id="f-slug" placeholder="e.g. um-create"
                       class="w-full border border-gray-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-gray-200">
            </div>
        </div>

        <div class="mb-4">
            <label class="block text-xs text-gray-500 mb-1">Title</label>
            <input type="text" id="f-title" placeholder="e.g. Membuat Pengajuan Uang Muka"
                   class="w-full border border-gray-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-gray-200">
        </div>

        <div class="mb-4">
            <label class="block text-xs text-gray-500 mb-1">Short Description (shown on card)</label>
            <textarea id="f-short-desc" rows="2" placeholder="Brief description for the card..."
                      class="w-full border border-gray-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-gray-200"></textarea>
        </div>

        <div class="mb-4">
            <label class="block text-xs text-gray-500 mb-1">Order</label>
            <input type="number" id="f-order" value="0" min="0"
                   class="w-32 border border-gray-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-gray-200">
        </div>

        {{-- Steps --}}
        <div class="mb-5">
            <div class="flex items-center justify-between mb-2">
                <label class="text-xs text-gray-500">Steps</label>
                <button type="button" onclick="addStep()"
                        class="text-xs px-2.5 py-1 border border-gray-200 rounded-lg hover:bg-gray-50 text-gray-600">
                    + Add Step
                </button>
            </div>
            <div id="steps-container" class="space-y-3"></div>
        </div>

        <div class="flex gap-3">
            <button onclick="saveSection()"
                    class="flex-1 py-2 text-sm bg-gray-900 text-white rounded-lg hover:bg-gray-700">
                Save
            </button>
            <button onclick="closeModal()"
                    class="px-4 py-2 text-sm border border-gray-200 rounded-lg hover:bg-gray-50 text-gray-600">
                Cancel
            </button>
        </div>
    </div>
</div>

<script>
let editingId = null;

function openAddModal() {
    editingId = null;
    document.getElementById('modal-title').textContent = 'Add Guide Section';
    document.getElementById('f-category').value = '';
    document.getElementById('f-slug').value = '';
    document.getElementById('f-title').value = '';
    document.getElementById('f-short-desc').value = '';
    document.getElementById('f-order').value = '0';
    document.getElementById('steps-container').innerHTML = '';
    document.getElementById('guide-modal').classList.remove('hidden');
}

function openEditModal(id) {
    fetch(`/web/user-guide/${id}`)
        .then(r => r.json())
        .then(data => {
            editingId = id;
            document.getElementById('modal-title').textContent = 'Edit Guide Section';
            document.getElementById('f-category').value  = data.category;
            document.getElementById('f-slug').value      = data.feature_slug;
            document.getElementById('f-title').value     = data.title;
            document.getElementById('f-short-desc').value = data.short_desc ?? '';
            document.getElementById('f-order').value     = data.order;

            document.getElementById('steps-container').innerHTML = '';
            (data.steps || []).forEach(step => addStep(step));

            document.getElementById('guide-modal').classList.remove('hidden');
        });
}

function closeModal() {
    document.getElementById('guide-modal').classList.add('hidden');
}

let stepCount = 0;
function addStep(step = null) {
    stepCount++;
    const idx = stepCount;
    const container = document.getElementById('steps-container');
    const div = document.createElement('div');
    const existingImage = step?.image_url
    ? `<div class="mt-2 mb-1">
        <img src="${step.image_url}" class="h-16 rounded border border-gray-100 object-cover" id="preview-${idx}">
        <button type="button" onclick="removeStepImage(${idx}, '${step.image_url}')"
                class="text-xs text-red-400 hover:text-red-600 ml-2">Remove image</button>
       </div>`
    : `<div id="preview-wrap-${idx}"></div>`;

    div.id = `step-${idx}`;
    div.className = 'border border-gray-100 rounded-xl p-3 bg-gray-50';
    div.innerHTML = `
        <div class="flex items-center justify-between mb-2">
            <span class="text-xs font-medium text-gray-500">Step ${idx}</span>
            <button type="button" onclick="document.getElementById('step-${idx}').remove()"
                    class="text-xs text-red-400 hover:text-red-600">Remove</button>
        </div>
        <input type="text" class="step-title w-full border border-gray-200 rounded-lg px-3 py-1.5 text-sm mb-2 focus:outline-none focus:ring-2 focus:ring-gray-200"
               placeholder="Step title" value="${(step?.title ?? '').replace(/"/g, '&quot;')}">
        <textarea class="step-desc w-full border border-gray-200 rounded-lg px-3 py-1.5 text-sm focus:outline-none focus:ring-2 focus:ring-gray-200 mb-2"
                  rows="2" placeholder="Step description">${step?.description ?? ''}</textarea>
        ${existingImage}
        <div class="mt-2">
            <label class="flex items-center gap-2 cursor-pointer text-xs px-3 py-1.5 border border-dashed border-gray-300 rounded-lg hover:bg-gray-50 text-gray-500 w-fit">
                <svg class="w-4 h-4" 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>
                Upload Image
                <input type="file" class="step-image-input hidden" accept="image/jpeg,image/png,image/webp"
                       onchange="previewStepImage(this, ${idx})">
            </label>
        </div>
        <input type="hidden" class="step-image-url" value="${step?.image_url ?? ''}">
    `;
    container.appendChild(div);
}

function collectSteps() {
    const steps = [];
    document.querySelectorAll('#steps-container > div').forEach((div, i) => {
        steps.push({
            order:       i + 1,
            title:       div.querySelector('.step-title').value,
            description: div.querySelector('.step-desc').value,
            image_url:   div.querySelector('.step-image-url')?.value || null,
        });
    });
    return steps;
}

function saveSection() {
    const steps = collectSteps();
    const form  = new FormData();

    form.append('category',     document.getElementById('f-category').value);
    form.append('feature_slug', document.getElementById('f-slug').value);
    form.append('title',        document.getElementById('f-title').value);
    form.append('short_desc',   document.getElementById('f-short-desc').value);
    form.append('order',        parseInt(document.getElementById('f-order').value) || 0);
    form.append('steps',        JSON.stringify(steps));
    form.append('_token',       '{{ csrf_token() }}');

    // Attach image files
    document.querySelectorAll('#steps-container > div').forEach((div, i) => {
        const fileInput = div.querySelector('.step-image-input');
        if (fileInput && fileInput.files[0]) {
            form.append(`step_image_${i}`, fileInput.files[0]);
        }
    });

    if (editingId) form.append('_method', 'PATCH');

    const url = editingId ? `/web/user-guide/${editingId}` : '/web/user-guide';

    fetch(url, {
        method: 'POST',
        body: form,
    })
    .then(r => r.text())
    .then(text => {
        let data;
        try { data = JSON.parse(text); } catch(e) {
            console.error('Save error:', text.substring(0, 300));
            alert('Server error. Check console.');
            return;
        }
        if (data.success) { closeModal(); window.location.reload(); }
        else alert('Error: ' + (data.message ?? 'Unknown'));
    })
    .catch(e => alert('Failed: ' + e.message));
}

function toggleSection(id) {
    fetch(`/web/user-guide/${id}/toggle`, {
        method: 'PATCH',
        headers: { 'Content-Type': 'application/json', 'X-CSRF-TOKEN': '{{ csrf_token() }}' },
    })
    .then(r => r.json())
    .then(data => { if (data.success) window.location.reload(); });
}

function deleteSection(id, title) {
    if (!confirm(`Delete "${title}"?`)) return;
    fetch(`/web/user-guide/${id}`, {
        method: 'DELETE',
        headers: { 'Content-Type': 'application/json', 'X-CSRF-TOKEN': '{{ csrf_token() }}' },
    })
    .then(r => r.json())
    .then(data => { if (data.success) window.location.reload(); });
}

function previewStepImage(input, idx) {
    if (input.files && input.files[0]) {
        const reader = new FileReader();
        reader.onload = e => {
            let wrap = document.getElementById(`preview-wrap-${idx}`);
            if (!wrap) {
                wrap = document.createElement('div');
                wrap.id = `preview-wrap-${idx}`;
                input.parentElement.before(wrap);
            }
            wrap.innerHTML = `<img src="${e.target.result}" class="h-16 rounded border border-gray-100 object-cover mt-1 mb-1">`;
        };
        reader.readAsDataURL(input.files[0]);
    }
}

function removeStepImage(idx, imageUrl) {
    if (!confirm('Remove this image?')) return;
    fetch('/web/user-guide/step-image/delete', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json', 'X-CSRF-TOKEN': '{{ csrf_token() }}' },
        body: JSON.stringify({ image_url: imageUrl })
    })
    .then(r => r.json())
    .then(() => {
        const preview = document.getElementById(`preview-${idx}`);
        if (preview) preview.parentElement.remove();
        const hiddenInput = document.querySelector(`#step-${idx} .step-image-url`);
        if (hiddenInput) hiddenInput.value = '';
    });
}
</script>

@endsection