import test from 'node:test'
import assert from 'node:assert/strict'
import { parseMenuTree } from '../src/api/session-model.ts'
import { toSidebarEntries } from '../src/layout/menu-mapper.ts'

test('test_task_037_menu_parent_child_normal_primary_path', () => {
  // 正常主路径：分组下的子页面作为 children 嵌套保留。
  const tree = parseMenuTree({ data: { items: [{ key: 'g', name: '组', children: [{ key: 'p', name: '页', route: '/p' }] }] } })
  assert.equal(tree[0].children?.[0].key, 'p')
})

test('test_task_037_menu_parent_child_normal_variant_input', () => {
  // 正常变体：多层父子关系逐层保留（组 > 子组 > 页面）。
  const tree = parseMenuTree({ items: [{ key: 'a', name: 'A', children: [{ key: 'b', name: 'B', children: [{ key: 'c', name: 'C', route: '/c' }] }] }] })
  assert.equal(tree[0].children?.[0].children?.[0].route, '/c')
})

test('test_task_037_menu_parent_child_normal_repeated_operation_is_idempotent', () => {
  // 正常重复：解析不重建/不污染父子引用结构之外的对象，结果稳定。
  const payload = { data: { items: [{ key: 'g', name: '组', children: [{ key: 'p', name: '页', route: '/p' }] }] } }
  assert.deepEqual(parseMenuTree(payload), parseMenuTree(payload))
})

test('test_task_037_menu_parent_child_boundary_empty_input', () => {
  // 边界空值：分组无子节点合法（可后续再挂载）。
  const tree = parseMenuTree({ items: [{ key: 'g', name: '组' }] })
  assert.equal(tree[0].children, undefined)
})

test('test_task_037_menu_parent_child_boundary_single_item', () => {
  // 边界单元素：单个页面节点可直接成为顶级项。
  const tree = parseMenuTree({ items: [{ key: 's', name: '单页', route: '/solo' }] })
  assert.equal(tree.length, 1)
  assert.equal(tree[0].route, '/solo')
})

test('test_task_037_menu_parent_child_boundary_limit_or_missing_field', () => {
  // 边界上限/缺字段：children 为非数组/空时不崩溃。
  const tree = parseMenuTree({ items: [{ key: 'g', name: '组', children: null as unknown as undefined }] })
  assert.equal(tree[0].children, null)
})

test('test_task_037_menu_parent_child_invalid_input_rejected', () => {
  // 异常输入：整棵非树负载(success=false)抛错，不产生半棵树。
  assert.throws(() => parseMenuTree({ success: false, message: '无权限' }), /无权限/)
})

test('test_task_037_menu_parent_child_dependency_failure_returns_actionable_message', () => {
  // 依赖失败：渲染层把父子关系映射为分组/子项，校验不丢层级。
  const entries = toSidebarEntries([{ key: 'g', name: '组', children: [{ key: 'p', name: '页', route: '/p' }] }])
  assert.equal(entries.length, 1)
  assert.equal(entries[0].kind, 'group')
  assert.equal(entries[0].kind === 'group' && entries[0].children[0].route, '/p')
})