// Categories page JavaScript

let routes = {};

// Initialize on page load
document.addEventListener('DOMContentLoaded', function() {
    if (window.categoryRoutes) {
        routes = window.categoryRoutes;
        loadCategoryTrees();
    }
});

function loadCategoryTrees() {
    loadM1Tree();
    loadM2Tree();
}

function loadM1Tree() {
    const container = document.getElementById('m1-tree-container');
    if (!container) return;
    
    container.innerHTML = '<div class="tree-loading">Loading categories...</div>';

    fetch(routes.magento1CategoryTree)
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                container.innerHTML = '';
                if (data.tree && data.tree.length > 0) {
                    renderTree(container, data.tree, 'm1');
                } else {
                    container.innerHTML = '<div class="tree-loading">No categories found</div>';
                }
            } else {
                container.innerHTML = `<div class="tree-error">Error: ${data.message || 'Failed to load categories'}</div>`;
            }
        })
        .catch(error => {
            container.innerHTML = `<div class="tree-error">Error: ${error.message}</div>`;
        });
}

function loadM2Tree() {
    const container = document.getElementById('m2-tree-container');
    if (!container) return;
    
    container.innerHTML = '<div class="tree-loading">Loading categories...</div>';

    fetch(routes.magento2CategoryTree)
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                container.innerHTML = '';
                if (data.tree && data.tree.length > 0) {
                    renderTree(container, data.tree, 'm2');
                } else {
                    container.innerHTML = '<div class="tree-loading">No categories found</div>';
                }
            } else {
                container.innerHTML = `<div class="tree-error">Error: ${data.message || 'Failed to load categories'}</div>`;
            }
        })
        .catch(error => {
            container.innerHTML = `<div class="tree-error">Error: ${error.message}</div>`;
        });
}

function renderTree(container, nodes, source = 'm2') {
    nodes.forEach(node => {
        const nodeElement = createTreeNode(node, source);
        container.appendChild(nodeElement);
    });
}

function createTreeNode(node, source = 'm2') {
    const nodeDiv = document.createElement('div');
    nodeDiv.className = 'tree-node';
    const hasChildren = node.children && node.children.length > 0;
    const canDelete = node.id != 0 && node.id != 1;

    const itemDiv = document.createElement('div');
    itemDiv.className = 'tree-node-item';

    const toggle = document.createElement('span');
    toggle.className = hasChildren ? 'tree-toggle collapsed' : 'tree-toggle leaf';
    if (hasChildren) {
        toggle.onclick = function(e) {
            e.stopPropagation();
            toggleNode(this);
        };
    }

    const label = document.createElement('div');
    label.className = 'tree-label';

    const labelText = document.createElement('span');
    labelText.className = 'tree-label-text';
    labelText.textContent = `[${node.id}] ${node.name || 'Unnamed Category'}`;

    const badge = document.createElement('span');
    badge.className = `tree-badge ${node.is_active ? 'active' : 'inactive'}`;
    badge.textContent = node.is_active ? 'Active' : 'Inactive';

    label.appendChild(labelText);
    label.appendChild(badge);

    if (canDelete) {
        const deleteBtn = document.createElement('button');
        deleteBtn.className = 'tree-delete-btn';
        deleteBtn.textContent = 'Delete';
        deleteBtn.onclick = function(e) {
            e.stopPropagation();
            showDeleteConfirmPopup(deleteBtn, node.id, node.name, source, hasChildren, node.children ? node.children.length : 0);
        };
        label.appendChild(deleteBtn);
    }

    itemDiv.appendChild(toggle);
    itemDiv.appendChild(label);
    nodeDiv.appendChild(itemDiv);

    if (hasChildren) {
        const childrenDiv = document.createElement('div');
        childrenDiv.className = 'tree-children';
        node.children.forEach(child => {
            childrenDiv.appendChild(createTreeNode(child, source));
        });
        nodeDiv.appendChild(childrenDiv);
    }

    return nodeDiv;
}

function toggleNode(toggleElement) {
    const nodeItem = toggleElement.parentElement;
    const nodeDiv = nodeItem.parentElement;
    const childrenDivs = nodeDiv.querySelectorAll('.tree-children');

    if (childrenDivs.length > 0) {
        let isExpanded = false;
        childrenDivs.forEach(div => {
            if (div.style.display !== 'none') {
                isExpanded = true;
            }
        });

        if (isExpanded) {
            childrenDivs.forEach(div => {
                div.style.display = 'none';
            });
            toggleElement.classList.remove('expanded');
            toggleElement.classList.add('collapsed');
        } else {
            childrenDivs.forEach(div => {
                div.style.display = 'block';
            });
            toggleElement.classList.remove('collapsed');
            toggleElement.classList.add('expanded');
        }
    }
}

function showDeleteConfirmPopup(buttonElement, categoryId, categoryName, source, hasChildren, childrenCount) {
    const existingPopup = document.querySelector('.delete-confirm-popup');
    const existingOverlay = document.querySelector('.popup-overlay');
    if (existingPopup) existingPopup.remove();
    if (existingOverlay) existingOverlay.remove();

    const overlay = document.createElement('div');
    overlay.className = 'popup-overlay';
    overlay.onclick = function() {
        closeDeleteConfirmPopup();
    };
    document.body.appendChild(overlay);

    const popup = document.createElement('div');
    popup.className = 'delete-confirm-popup';
    popup.style.position = 'fixed';
    popup.style.top = '50%';
    popup.style.left = '50%';
    popup.style.transform = 'translate(-50%, -50%)';
    popup.style.zIndex = '10000';

    const title = document.createElement('h3');
    title.textContent = 'Delete Category';

    const message = document.createElement('p');
    if (hasChildren) {
        message.innerHTML = `Are you sure you want to delete <strong style="color: #d32f2f; font-weight: bold;">"${categoryName}"</strong> and all ${childrenCount} subcategory(ies)? This action cannot be undone.`;
    } else {
        message.innerHTML = `Are you sure you want to delete the category <strong style="color: #d32f2f; font-weight: bold;">"${categoryName}"</strong>? This action cannot be undone.`;
    }

    const buttonsDiv = document.createElement('div');
    buttonsDiv.className = 'popup-buttons';

    const cancelBtn = document.createElement('button');
    cancelBtn.className = 'popup-btn popup-btn-cancel';
    cancelBtn.textContent = 'Cancel';
    cancelBtn.onclick = function(e) {
        e.stopPropagation();
        closeDeleteConfirmPopup();
    };

    const deleteBtn = document.createElement('button');
    deleteBtn.className = 'popup-btn popup-btn-delete';
    deleteBtn.textContent = 'Delete';
    deleteBtn.onclick = function(e) {
        e.stopPropagation();
        closeDeleteConfirmPopup();
        deleteCategory(categoryId, categoryName, source);
    };

    buttonsDiv.appendChild(cancelBtn);
    buttonsDiv.appendChild(deleteBtn);

    popup.appendChild(title);
    popup.appendChild(message);
    popup.appendChild(buttonsDiv);

    document.body.appendChild(popup);
}

function closeDeleteConfirmPopup() {
    const popup = document.querySelector('.delete-confirm-popup');
    const overlay = document.querySelector('.popup-overlay');
    if (popup) popup.remove();
    if (overlay) overlay.remove();
}

function deleteCategory(categoryId, categoryName, source) {
    const container = source === 'm1' ? document.getElementById('m1-tree-container') : document.getElementById('m2-tree-container');
    if (!container) return;
    
    const originalContent = container.innerHTML;
    container.innerHTML = '<div class="tree-loading">Deleting category...</div>';

    const csrfToken = document.querySelector('meta[name="csrf-token"]')?.content;
    const deleteRoute = routes.deleteCategory.replace(':id', categoryId);
    
    fetch(deleteRoute, {
        method: 'DELETE',
        headers: {
            'Content-Type': 'application/json',
            'X-CSRF-TOKEN': csrfToken
        },
        body: JSON.stringify({ source: source })
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            if (source === 'm1') {
                loadM1Tree();
            } else {
                loadM2Tree();
                location.reload();
            }
        } else {
            container.innerHTML = originalContent;
            alert('Error: ' + (data.message || 'Failed to delete category'));
        }
    })
    .catch(error => {
        container.innerHTML = originalContent;
        alert('Error: ' + error.message);
    });
}