{% extends 'base.html' %}

{% block title %}图书分类管理 - 图书管理系统{% endblock %}

{% block head %}
<link rel="stylesheet" href="{{ url_for('static', filename='css/categories.css') }}">
{% endblock %}

{% block content %}
<div class="categories-container">
    <div class="page-header">
        <h1>图书分类管理</h1>
        <a href="{{ url_for('book.book_list') }}" class="btn btn-secondary">
            <i class="fas fa-arrow-left"></i> 返回图书列表
        </a>
    </div>

    <div class="row">
        <div class="col-md-4">
            <div class="card">
                <div class="card-header">
                    添加新分类
                </div>
                <div class="card-body">
                    <form id="categoryForm">
                        <div class="form-group">
                            <label for="categoryName">分类名称</label>
                            <input type="text" class="form-control" id="categoryName" name="name" required>
                        </div>
                        <div class="form-group">
                            <label for="parentCategory">父级分类</label>
                            <select class="form-control" id="parentCategory" name="parent_id">
                                <option value="">无 (顶级分类)</option>
                                {% for category in categories %}
                                <option value="{{ category.id }}">{{ category.name }}</option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="form-group">
                            <label for="categorySort">排序</label>
                            <input type="number" class="form-control" id="categorySort" name="sort" value="0" min="0">
                        </div>
                        <button type="submit" class="btn btn-primary btn-block">
                            <i class="fas fa-plus"></i> 添加分类
                        </button>
                    </form>
                </div>
            </div>
        </div>

        <div class="col-md-8">
            <div class="card">
                <div class="card-header">
                    分类列表
                </div>
                <div class="card-body">
                    {% if categories %}
                    <table class="table table-hover category-table">
                        <thead>
                            <tr>
                                <th width="5%">ID</th>
                                <th width="40%">分类名称</th>
                                <th width="20%">父级分类</th>
                                <th width="10%">排序</th>
                                <th width="25%">操作</th>
                            </tr>
                        </thead>
                        <tbody>
                            {% for category in categories %}
                            <tr data-id="{{ category.id }}">
                                <td>{{ category.id }}</td>
                                <td>{{ category.name }}</td>
                                <td>
                                    {% if category.parent %}
                                    {{ category.parent.name }}
                                    {% else %}
                                    <span class="text-muted">无</span>
                                    {% endif %}
                                </td>
                                <td>{{ category.sort }}</td>
                                                                <td>
                                    <button class="btn btn-sm btn-primary edit-category" data-id="{{ category.id }}"
                                            data-name="{{ category.name }}"
                                            data-parent="{{ category.parent_id or '' }}"
                                            data-sort="{{ category.sort }}">
                                        <i class="fas fa-edit"></i> 编辑
                                    </button>
                                    <button class="btn btn-sm btn-danger delete-category" data-id="{{ category.id }}" data-name="{{ category.name }}">
                                        <i class="fas fa-trash"></i> 删除
                                    </button>
                                </td>
                            </tr>
                            {% endfor %}
                        </tbody>
                    </table>
                    {% else %}
                    <div class="no-categories">
                        <i class="fas fa-exclamation-circle"></i>
                        <p>暂无分类数据</p>
                    </div>
                    {% endif %}
                </div>
            </div>
        </div>
    </div>
</div>

<!-- 编辑分类模态框 -->
<div class="modal fade" id="editCategoryModal" tabindex="-1" role="dialog" aria-labelledby="editCategoryModalLabel" aria-hidden="true">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="editCategoryModalLabel">编辑分类</h5>
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
            </div>
            <form id="editCategoryForm">
                <div class="modal-body">
                    <input type="hidden" id="editCategoryId">
                    <div class="form-group">
                        <label for="editCategoryName">分类名称</label>
                        <input type="text" class="form-control" id="editCategoryName" name="name" required>
                    </div>
                    <div class="form-group">
                        <label for="editParentCategory">父级分类</label>
                        <select class="form-control" id="editParentCategory" name="parent_id">
                            <option value="">无 (顶级分类)</option>
                            {% for category in categories %}
                            <option value="{{ category.id }}">{{ category.name }}</option>
                            {% endfor %}
                        </select>
                    </div>
                    <div class="form-group">
                        <label for="editCategorySort">排序</label>
                        <input type="number" class="form-control" id="editCategorySort" name="sort" value="0" min="0">
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-dismiss="modal">取消</button>
                    <button type="submit" class="btn btn-primary">保存修改</button>
                </div>
            </form>
        </div>
    </div>
</div>

<!-- 删除确认模态框 -->
<div class="modal fade" id="deleteCategoryModal" tabindex="-1" role="dialog" aria-labelledby="deleteCategoryModalLabel" aria-hidden="true">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="deleteCategoryModalLabel">确认删除</h5>
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
            </div>
            <div class="modal-body">
                <p>您确定要删除分类 "<span id="deleteCategoryName"></span>" 吗？</p>
                <p class="text-danger">注意: 如果该分类下有图书或子分类，将无法删除！</p>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-dismiss="modal">取消</button>
                <button type="button" class="btn btn-danger" id="confirmDeleteCategory">确认删除</button>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block scripts %}
<script>
    $(document).ready(function() {
        // 添加分类
        $('#categoryForm').submit(function(e) {
            e.preventDefault();

            const formData = {
                name: $('#categoryName').val(),
                parent_id: $('#parentCategory').val(),
                sort: $('#categorySort').val()
            };

            $.ajax({
                url: '{{ url_for("book.add_category") }}',
                type: 'POST',
                data: formData,
                success: function(response) {
                    if (response.success) {
                        showNotification(response.message, 'success');
                        setTimeout(function() {
                            location.reload();
                        }, 1000);
                    } else {
                        showNotification(response.message, 'error');
                    }
                },
                error: function() {
                    showNotification('操作失败，请稍后重试', 'error');
                }
            });
        });

        // 打开编辑模态框
        $('.edit-category').click(function() {
            const id = $(this).data('id');
            const name = $(this).data('name');
            const parentId = $(this).data('parent');
            const sort = $(this).data('sort');

            $('#editCategoryId').val(id);
            $('#editCategoryName').val(name);
            $('#editParentCategory').val(parentId);
            $('#editCategorySort').val(sort);

            // 禁用选择自己作为父级
            $('#editParentCategory option').removeAttr('disabled');
            $(`#editParentCategory option[value="${id}"]`).attr('disabled', 'disabled');

            $('#editCategoryModal').modal('show');
        });

        // 提交编辑表单
        $('#editCategoryForm').submit(function(e) {
            e.preventDefault();

            const id = $('#editCategoryId').val();
            const formData = {
                name: $('#editCategoryName').val(),
                parent_id: $('#editParentCategory').val(),
                sort: $('#editCategorySort').val()
            };

            $.ajax({
                url: `/book/categories/edit/${id}`,
                type: 'POST',
                data: formData,
                success: function(response) {
                    if (response.success) {
                        $('#editCategoryModal').modal('hide');
                        showNotification(response.message, 'success');
                        setTimeout(function() {
                            location.reload();
                        }, 1000);
                    } else {
                        showNotification(response.message, 'error');
                    }
                },
                error: function() {
                    showNotification('操作失败，请稍后重试', 'error');
                }
            });
        });

        // 打开删除确认框
        $('.delete-category').click(function() {
            const id = $(this).data('id');
            const name = $(this).data('name');

            $('#deleteCategoryName').text(name);
            $('#confirmDeleteCategory').data('id', id);

            $('#deleteCategoryModal').modal('show');
        });

        // 确认删除
        $('#confirmDeleteCategory').click(function() {
            const id = $(this).data('id');

            $.ajax({
                url: `/book/categories/delete/${id}`,
                type: 'POST',
                success: function(response) {
                    $('#deleteCategoryModal').modal('hide');

                    if (response.success) {
                        showNotification(response.message, 'success');
                        setTimeout(function() {
                            location.reload();
                        }, 1000);
                    } else {
                        showNotification(response.message, 'error');
                    }
                },
                error: function() {
                    showNotification('操作失败，请稍后重试', 'error');
                }
            });
        });

        // 显示通知
        function showNotification(message, type) {
            const alertClass = type === 'success' ? 'alert-success' : 'alert-danger';
            const alert = `
                <div class="alert ${alertClass} alert-dismissible fade show notification-alert" role="alert">
                    ${message}
                    <button type="button" class="close" data-dismiss="alert" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
            `;

            $('body').append(alert);

            // 5秒后自动关闭
            setTimeout(() => {
                $('.notification-alert').alert('close');
            }, 5000);
        }
    });
</script>
{% endblock %}