@extends('admin.layout', ['title' => 'Inventory'])

@section('content')
<div id="alertBox" class="alert d-none" role="alert"></div>

<div class="card rounded-0 border-0 p-0 m-0">
    <div class="card-body p-4">
        <form id="itemForm" class="row g-2 align-items-end">
            <div class="col-12 col-md-5">
                <label class="form-label">Name</label>
                <input class="form-control" name="name" required>
            </div>
            <div class="col-12 col-md-3">
                <label class="form-label">SKU</label>
                <input class="form-control" name="sku">
            </div>
            <div class="col-12 col-md-2">
                <label class="form-label">Stock</label>
                <input class="form-control" name="stock" type="number" value="0">
            </div>
            <div class="col-12 col-md-2">
                <div class="form-check">
                    <input class="form-check-input" type="checkbox" id="itemActive" name="is_active" checked>
                    <label class="form-check-label" for="itemActive">Active</label>
                </div>
            </div>
            <div class="col-12">
                <button class="btn btn-primary rounded" type="submit"><i class="fas fa-check-circle"></i> Add</button>
            </div>
        </form>
    </div>
</div>

<div class="card rounded-0 border-0 p-0 m-0 mt-3">
    <div class="card-body p-0">
        <div class="table-responsive">
            <table class="table mb-0">
                <thead>
                    <tr>
                        <th>ID</th>
                        <th>Name</th>
                        <th>SKU</th>
                        <th>Stock</th>
                        <th>Active</th>
                        <th>Adjust</th>
                        <th></th>
                    </tr>
                </thead>
                <tbody id="rows"></tbody>
            </table>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script>
    window.__ADMIN_TOKEN__ = @json($adminToken);
    const apiBase = '/api/admin';

    function showAlert(type, message) {
        const box = document.getElementById('alertBox');
        box.classList.remove('d-none', 'alert-success', 'alert-danger', 'alert-warning', 'alert-info');
        box.classList.add('alert-' + type);
        box.textContent = message;
        setTimeout(() => box.classList.add('d-none'), 3500);
    }

    async function apiFetch(path, options = {}) {
        const headers = options.headers || {};
        headers['Accept'] = 'application/json';
        headers['Authorization'] = 'Bearer ' + window.__ADMIN_TOKEN__;
        if (options.body && !(options.body instanceof FormData)) {
            headers['Content-Type'] = 'application/json';
        }
        const res = await fetch(path, { ...options, headers });
        const json = await res.json().catch(() => ({}));
        if (!res.ok || json.success === false) {
            const msg = (json && (json.msg || json.message)) ? (json.msg || json.message) : 'Erro';
            throw new Error(msg);
        }
        return json;
    }

    function formToObject(form) {
        const fd = new FormData(form);
        const obj = {};
        fd.forEach((value, key) => obj[key] = value);
        form.querySelectorAll('input[type="checkbox"]').forEach(cb => obj[cb.name] = cb.checked);
        return obj;
    }

    async function load() {
        const res = await apiFetch(apiBase + '/inventory-items');
        const items = res.data?.data || [];
        const tbody = document.getElementById('rows');
        tbody.innerHTML = '';

        for (const it of items) {
            const tr = document.createElement('tr');
            tr.innerHTML = `
                <td>${it.id}</td>
                <td>${it.name ?? ''}</td>
                <td>${it.sku ?? ''}</td>
                <td>${it.stock ?? 0}</td>
                <td>${it.is_active ? 'Yes' : 'No'}</td>
                <td style="max-width: 180px;">
                    <div class="input-group input-group-sm">
                        <input type="number" class="form-control" value="1" data-delta="${it.id}">
                        <button class="btn btn-outline-primary" data-add="${it.id}">Apply</button>
                    </div>
                </td>
                <td class="text-end">
                    <button class="btn btn-sm btn-outline-danger" data-del="${it.id}">Delete</button>
                </td>
            `;
            tbody.appendChild(tr);
        }

        tbody.querySelectorAll('button[data-del]').forEach(btn => {
            btn.addEventListener('click', async () => {
                try {
                    await apiFetch(apiBase + '/inventory-items/' + btn.dataset.del, { method: 'DELETE' });
                    showAlert('success', 'Deletado');
                    await load();
                } catch (err) {
                    showAlert('danger', err.message);
                }
            });
        });

        tbody.querySelectorAll('button[data-add]').forEach(btn => {
            btn.addEventListener('click', async () => {
                try {
                    const id = btn.dataset.add;
                    const deltaInput = document.querySelector('input[data-delta="' + id + '"]');
                    const delta = parseInt(deltaInput?.value || '0', 10);
                    await apiFetch(apiBase + '/inventory-items/' + id + '/adjust-stock', {
                        method: 'POST',
                        body: JSON.stringify({ delta })
                    });
                    showAlert('success', 'Atualizado');
                    await load();
                } catch (err) {
                    showAlert('danger', err.message);
                }
            });
        });
    }

    document.getElementById('itemForm').addEventListener('submit', async (e) => {
        e.preventDefault();
        try {
            const payload = formToObject(e.target);
            await apiFetch(apiBase + '/inventory-items', { method: 'POST', body: JSON.stringify(payload) });
            e.target.reset();
            document.getElementById('itemActive').checked = true;
            showAlert('success', 'Criado');
            await load();
        } catch (err) {
            showAlert('danger', err.message);
        }
    });

    (async () => {
        try {
            await load();
        } catch (err) {
            showAlert('danger', err.message);
        }
    })();
</script>
@endpush