/** 与后端 PermissionCatalog 保持一致：目录 / 菜单 / 按钮 */
export const permissionTree = [
  {
    code: 'dir:overview',
    name: '概览',
    type: 'dir',
    children: [
      {
        code: 'menu:dashboard',
        name: '数据概览',
        type: 'menu',
        path: '/dashboard',
        icon: 'dashboard',
        children: []
      }
    ]
  },
  {
    code: 'dir:org',
    name: '组织架构',
    type: 'dir',
    children: [
                      {
                        code: 'menu:users',
                        name: '用户管理',
                        type: 'menu',
                        path: '/users',
                        icon: 'users',
                        children: [
                          { code: 'btn:user:create', name: '新增用户', type: 'btn' },
                          { code: 'btn:user:edit', name: '编辑用户', type: 'btn' },
                          { code: 'btn:user:reset_password', name: '重置密码', type: 'btn' },
                          { code: 'btn:user:delete', name: '删除用户', type: 'btn' }
                        ]
                      },
      {
        code: 'menu:departments',
        name: '部门管理',
        type: 'menu',
        path: '/departments',
        icon: 'departments',
        children: [
          { code: 'btn:dept:create', name: '新增部门', type: 'btn' },
          { code: 'btn:dept:edit', name: '编辑部门', type: 'btn' },
          { code: 'btn:dept:delete', name: '删除部门', type: 'btn' }
        ]
      },
      {
        code: 'menu:roles',
        name: '角色管理',
        type: 'menu',
        path: '/roles',
        icon: 'roles',
        children: [
          { code: 'btn:role:create', name: '新增角色', type: 'btn' },
          { code: 'btn:role:edit', name: '编辑角色', type: 'btn' },
          { code: 'btn:role:delete', name: '删除角色', type: 'btn' }
        ]
      }
    ]
  },
  {
    code: 'dir:business',
    name: '业务数据',
    type: 'dir',
    children: [
      {
        code: 'menu:conversations',
        name: '会话管理',
        type: 'menu',
        path: '/conversations',
        icon: 'conversations',
        children: [
          { code: 'btn:conv:view_all', name: '查看全部会话', type: 'btn' },
          { code: 'btn:conv:view_subordinate', name: '查看下级部门会话', type: 'btn' }
        ]
      },
      {
        code: 'menu:memberships',
        name: '会员等级',
        type: 'menu',
        path: '/memberships',
        icon: 'memberships',
        children: [
          { code: 'btn:membership:create', name: '新增会员等级', type: 'btn' },
          { code: 'btn:membership:edit', name: '编辑会员等级', type: 'btn' },
          { code: 'btn:membership:delete', name: '删除会员等级', type: 'btn' }
        ]
      }
    ]
  },
  {
    code: 'dir:system',
    name: '系统管理',
    type: 'dir',
    children: [
                    {
                        code: 'menu:models',
                        name: 'AI 模型',
                        type: 'menu',
                        path: '/models',
                        icon: 'models',
                        children: [
                          { code: 'btn:model:create', name: '新增模型', type: 'btn' },
                          { code: 'btn:model:edit', name: '编辑模型', type: 'btn' },
                          { code: 'btn:model:delete', name: '删除模型', type: 'btn' },
                          { code: 'btn:model:test', name: '测试连接', type: 'btn' }
                        ]
                      },
                      {
                        code: 'menu:permissions',
                        name: '权限管理',
                        type: 'menu',
                        path: '/permissions',
                        icon: 'permissions',
                        children: [
                          { code: 'btn:perm:create', name: '新增权限', type: 'btn' },
                          { code: 'btn:perm:edit', name: '编辑权限', type: 'btn' },
                          { code: 'btn:perm:delete', name: '删除权限', type: 'btn' }
                        ]
                      },
                      {
                        code: 'menu:settings',
                        name: '系统设置',
                        type: 'menu',
                        path: '/settings',
                        icon: 'settings',
                        children: [
                          { code: 'btn:settings:save', name: '保存设置', type: 'btn' }
                        ]
                      }
    ]
  }
]

export function emptyPermissions() {
  return {
    can_access_admin: false,
    dirs: [],
    menus: [],
    buttons: []
  }
}

export function flattenMenus(tree = permissionTree) {
  const list = []
  for (const dir of tree) {
    for (const menu of dir.children || []) {
      list.push({
        ...menu,
        dir: dir.code,
        dirName: dir.name
      })
    }
  }
  return list
}

export function summarizePermissionLabels(perms = {}) {
  const labels = []
  if (perms.can_access_admin) labels.push('后台')
  for (const dir of permissionTree) {
    if ((perms.dirs || []).includes(dir.code)) labels.push(dir.name)
  }
  for (const menu of flattenMenus()) {
    if ((perms.menus || []).includes(menu.code)) labels.push(menu.name)
  }
  return labels
}