init

.gitignore

+.vscode
+.idea
+.DS_Store
+__pycache__
+*.pyc
+*.zip
+*.out
+
+
+# Created by https://www.toptal.com/developers/gitignore/api/csharp
+# Edit at https://www.toptal.com/developers/gitignore?templates=csharp
+
+### Csharp ###
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.tlog
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Nuget personal access tokens and Credentials
+# nuget.config
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# VS Code files for those working on multiple tools
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/
+
+# Windows Installer files from build outputs
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# End of https://www.toptal.com/developers/gitignore/api/csharp
\ No newline at end of file

README.md

 # skill_tree_csharp
 
-C# 技能树
\ No newline at end of file
+C# 技能树
+
+## 初始化技能树
+
+技能树合成和id生成脚本目前用Python脚本统一处理
+
+```bash
+pip install -r requirement.txt
+```
+
+
+## 目录结构说明
+
+data目录下包含 难度节点/章节点/知识节点 3级目录结构
+
+* 技能树`骨架文件`：
+    * 位置：`data/tree.json` 
+    * 说明：该文件是执行 `python main.py` 生成的，请勿人工编辑
+* 技能树`根节点`配置文件：
+    * 位置：`data/config.json`
+    * 说明：可编辑配置关键词等字段，其中 `node_id` 字段是生成的，请勿编辑
+* 技能树`难度节点`：
+    * 位置：`data/xxx`，例如: `data/1.csharp初阶`
+    * 说明：
+        * 每个技能树有 3 个等级，目录前的序号是**必要**的，用来保持文件夹目录的顺序
+        * 每个目录下有一个 `config.json` 可配置关键词信息，其中 `node_id` 字段是生成的，请勿编辑
+* 技能树`章节点`：
+    * 位置：`data/xxx/xxx`，例如：`data/1.csharp初阶/1.预备知识`
+    * 说明：
+        * 每个技能树的每个难度等级有 n 个章节，目录前的序号是**必要**的，用来保持文件夹目录的顺序
+        * 每个目录下有一个 `config.json` 可配置关键词信息，其中 `node_id` 字段是生成的，请勿编辑
+* 技能树`知识节点`：
+    * 位置：`data/xxx/xxx`，例如：`data/1.csharp初阶/1.预备知识/1.csharp简介`
+    * 说明：
+        * 每个技能树的每章有 n 个知识节点，目录前的序号是必要的，用来保持文件夹目录的顺序
+        * 每个目录下有一个 `config.json`
+            * 其中 `node_id` 字段是生成的，请勿编辑
+            * 其中 `keywords` 可配置关键字字段
+            * 其中 `children` 可配置该`知识节点`下的子树结构信息，参考后面描述
+            * 其中 `export` 可配置该`知识节点`下的导出习题信息，参考后面描述
+
+
+## `知识节点` 子树信息结构
+
+例如 `data/1.csharp初阶/1.预备知识/1.csharp简介/config.json` 里配置对该知识节点子树信息结构，用来增加技能树服务在该知识节点上的深度数据匹配：
+
+```json
+{
+    // ...
+
+    "children": [
+        {
+            "csharp的起源": {
+                "keywords": [
+                    "c#的起源",
+                    "起源",
+                    "c#"
+                ],
+                "children": []
+            }
+        }
+    ],
+}
+```
+
+
+## `知识节点` 的导出习题编辑
+
+例如 `data/1.csharp初阶/1.预备知识/1.csharp简介/config.json` 里配置对该知识节点导出的习题
+
+```json
+{
+    // ...
+    "export": [
+        "helloworld.json",
+        // ...
+    ]
+}
+```
+
+在 `export` 字段中，我们列出习题定义的`json`文件列表 ，下面我们了解如何编写习题。
+
+## `知识节点` 的导出习题选项配置编辑
+
+目前我们支持使用 markdown 语法直接编辑习题和各选项。
+
+如前文内容，我们在知识节点下增加习题 `helloworld`的定义文件，即在`data/1.csharp初阶/1.预备知识/1.csharp简介` 目录增加一个`helloworld.json`文件：
+
+```json
+{
+    "type": "code_options",
+    "author": "幻灰龙",
+    "source": "helloworld.md",
+    "notebook_enable": true
+}
+```
+
+其中
+
+* `type` 字段目前都固定是 `code_options`，
+* `notebook_enable` 字段决定这个习题是否生成对应的 `notebook` 
+* `source` 字段代表习题编辑的 `markdwon` 文件。
+
+现在我们新建一个 `helloworld.md` 并编辑为：
+
+````markdown
+# Hello World
+
+编写一个输出 "Hello,World!" 的 C# 程序，以下错误的是？
+
+## 答案
+
+```csharp
+using System;
+public class Program{
+    public static void Main(){
+        String str1 = "Hello,";
+        String str2 = "World!";
+        Console.WriteLine("str1"+"str2");
+    }
+}
+```
+
+## 选项
+
+### 直接打印
+
+```csharp
+using System;
+public class Program{
+    public static void Main(){
+        Console.WriteLine("Hello,World!");
+    }
+}
+```
+
+### 两个字符串拼接
+
+```csharp
+using System;
+public class Program{
+    public static void Main(){
+        String str1 = "Hello,";
+        String str2 = "World!";
+        Console.WriteLine(str1+str2);
+    }
+}
+```
+
+### 使用 var 关键字
+
+```csharp
+using System;
+public class Program{
+    public static void Main(){
+        var str1 = "Hello,";
+        var str2 = "World!";
+        Console.WriteLine(str1+str2);
+    }
+}
+```
+````
+
+这是一个最基本的习题结构，它包含标题、答案、选项，注意这几个一级和二级标题必须填写正确，解释器会读取这几个标题。而选项的标题会被直接忽略掉，在
+最终生成的习题中不包含选项的三级标题，所以这个标题可以用来标注一些编辑信息，例如“使用 var 关键字”，“两个字符串拼接”等等。
+
+## 可选的习题源代码项目
+
+编辑习题中，为了测试方便，可以直接在3级知识节点目录下创建对应的习题代码子目录
+
+
+
+## 技能树合成
+
+在根目录下执行 `python main.py` 会合成技能树文件，合成的技能树文件: `data/tree.json`
+
+* 合成过程中，会自动检查每个目录下 `config.json` 里的 `node_id` 是否存在，不存在则生成
+* 合成过程中，会自动检查每个知识点目录下 `config.json` 里的 `export` 里导出的习题配置，检查是否存在`exercise_id` 字段，如果不存在则生成

data/1.csharp初阶/1.预备知识/1.csharp简介/config.json

+{
+  "node_id": "csharp-37f9119660e445a48b065052b38c7687",
+  "keywords": [
+    "c#的起源",
+    "起源",
+    "c#"
+  ],
+  "children": [],
+  "export": [
+      "helloworld.json"
+  ]
+}
\ No newline at end of file

data/1.csharp初阶/1.预备知识/1.csharp简介/helloworld.json

+{
+    "type": "code_options",
+    "author": "幻灰龙",
+    "source": "helloworld.md",
+    "notebook_enable": true
+}
\ No newline at end of file

data/1.csharp初阶/1.预备知识/1.csharp简介/helloworld.md

+# Hello World
+
+编写一个输出 "Hello,World!" 的 C# 程序，以下错误的是？
+
+## 答案
+
+```csharp
+using System;
+public class Program{
+    public static void Main(){
+        String str1 = "Hello,";
+        String str2 = "World!";
+        Console.WriteLine("str1"+"str2");
+    }
+}
+```
+
+## 选项
+
+### 直接打印
+
+```csharp
+using System;
+public class Program{
+    public static void Main(){
+        Console.WriteLine("Hello,World!");
+    }
+}
+```
+
+### 两个字符串拼接
+
+```csharp
+using System;
+public class Program{
+    public static void Main(){
+        String str1 = "Hello,";
+        String str2 = "World!";
+        Console.WriteLine(str1+str2);
+    }
+}
+```
+
+### 使用 var 关键字
+
+```csharp
+using System;
+public class Program{
+    public static void Main(){
+        var str1 = "Hello,";
+        var str2 = "World!";
+        Console.WriteLine(str1+str2);
+    }
+}
+```
\ No newline at end of file

data/1.csharp初阶/1.预备知识/2.安装.NET/config.json

+{
+  "node_id": "csharp-ab27adf6911e4530bd1716526c12781c",
+  "keywords": [],
+  "children": [],
+  "export": []
+}
\ No newline at end of file

data/1.csharp初阶/1.预备知识/config.json

+{
+  "node_id": "csharp-08a7251782494105ba037cc4f59ddf0c",
+  "keywords": []
+}
\ No newline at end of file

data/1.csharp初阶/2.基础语法/config.json

+{
+  "node_id": "csharp-78ef60a83e3a45dca08ded3b6e9e806a",
+  "keywords": []
+}
\ No newline at end of file

data/1.csharp初阶/config.json

+{
+  "node_id": "csharp-0d59ee87a1c24dec86cd6174eda22d8e",
+  "keywords": []
+}
\ No newline at end of file

data/2.csharp中阶/config.json

+{
+  "node_id": "csharp-e5ec4e73aa7842fda7fc5e2a3523373e",
+  "keywords": []
+}
\ No newline at end of file

data/3.csharp高阶/config.json

+{
+  "node_id": "csharp-7767ed91286e423fafc5c4637935199c",
+  "keywords": []
+}
\ No newline at end of file

data/config.json

+{
+  "tree_name": "csharp",
+  "keywords": [],
+  "node_id": "csharp-0991d7a5f9a242e4983005d8ff53b086"
+}
\ No newline at end of file

data/tree.json

+{
+  "csharp": {
+    "node_id": "csharp-0991d7a5f9a242e4983005d8ff53b086",
+    "keywords": [],
+    "children": [
+      {
+        "csharp初阶": {
+          "node_id": "csharp-0d59ee87a1c24dec86cd6174eda22d8e",
+          "keywords": [],
+          "children": [
+            {
+              "预备知识": {
+                "node_id": "csharp-08a7251782494105ba037cc4f59ddf0c",
+                "keywords": [],
+                "children": [
+                  {
+                    "简介": {
+                      "node_id": "csharp-37f9119660e445a48b065052b38c7687",
+                      "keywords": [],
+                      "children": []
+                    }
+                  },
+                  {
+                    "安装": {
+                      "node_id": "csharp-ab27adf6911e4530bd1716526c12781c",
+                      "keywords": [],
+                      "children": []
+                    }
+                  }
+                ]
+              }
+            },
+            {
+              "基础语法": {
+                "node_id": "csharp-78ef60a83e3a45dca08ded3b6e9e806a",
+                "keywords": [],
+                "children": []
+              }
+            }
+          ]
+        }
+      },
+      {
+        "csharp中阶": {
+          "node_id": "csharp-e5ec4e73aa7842fda7fc5e2a3523373e",
+          "keywords": [],
+          "children": []
+        }
+      },
+      {
+        "csharp高阶": {
+          "node_id": "csharp-7767ed91286e423fafc5c4637935199c",
+          "keywords": [],
+          "children": []
+        }
+      }
+    ]
+  }
+}
\ No newline at end of file

main.py

+# -*- coding: utf-8 -*-
+from src.tree import TreeWalker
+
+if __name__ == '__main__':
+    walker = TreeWalker("data", "csharp", "csharp")
+    walker.walk()

requirement.txt

+uuid==1.30
\ No newline at end of file

src/tree.py

+# -*- coding: utf-8 -*-
+import logging
+from genericpath import exists
+import json
+import os
+import uuid
+import sys
+import re
+
+id_set = set()
+logger = logging.getLogger(__name__)
+logger.setLevel(logging.INFO)
+handler = logging.StreamHandler(sys.stdout)
+formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
+handler.setFormatter(formatter)
+logger.addHandler(handler)
+
+
+def load_json(p):
+    with open(p, 'r', encoding='utf-8') as f:
+        return json.loads(f.read())
+
+
+def dump_json(p, j, exist_ok=False, override=False):
+    if os.path.exists(p):
+        if exist_ok:
+            if not override:
+                return
+        else:
+            logger.error(f"{p} already exist")
+            sys.exit(0)
+
+    with open(p, 'w+', encoding='utf-8') as f:
+        f.write(json.dumps(j, indent=2, ensure_ascii=False))
+
+
+def ensure_config(path):
+    config_path = os.path.join(path, "config.json")
+    if not os.path.exists(config_path):
+        node = {"keywords": []}
+        dump_json(config_path, node, exist_ok=True, override=False)
+        return node
+    else:
+        return load_json(config_path)
+
+
+def parse_no_name(d):
+    p = r'(\d+)\.(.*)'
+    m = re.search(p, d)
+
+    try:
+        no = int(m.group(1))
+        dir_name = m.group(2)
+    except:
+        sys.exit(0)
+
+    return no, dir_name
+
+
+def check_export(base, cfg):
+    flag = False
+    exports = []
+    for export in cfg.get('export', []):
+        ecfg_path = os.path.join(base, export)
+        if os.path.exists(ecfg_path):
+            exports.append(export)
+        else:
+            flag = True
+    if flag:
+        cfg["export"] = exports
+    return flag
+
+
+class TreeWalker:
+    def __init__(self, root, tree_name, title=None, log=None):
+        self.name = tree_name
+        self.root = root
+        self.title = tree_name if title is None else title
+        self.tree = {}
+        self.logger = logger if log is None else log
+
+    def walk(self):
+        root = self.load_root()
+        root_node = {
+            "node_id": root["node_id"],
+            "keywords": root["keywords"],
+            "children": []
+        }
+        self.tree[root["tree_name"]] = root_node
+        self.load_levels(root_node)
+        self.load_chapters(self.root, root_node)
+        for index, level in enumerate(root_node["children"]):
+            level_title = list(level.keys())[0]
+            level_node = list(level.values())[0]
+            level_path = os.path.join(self.root, f"{index+1}.{level_title}")
+            self.load_chapters(level_path, level_node)
+            for index, chapter in enumerate(level_node["children"]):
+                chapter_title = list(chapter.keys())[0]
+                chapter_node = list(chapter.values())[0]
+                chapter_path = os.path.join(
+                    level_path, f"{index+1}.{chapter_title}")
+                self.load_sections(chapter_path, chapter_node)
+                for index, section_node in enumerate(chapter_node["children"]):
+                    section_title = list(section_node.keys())[0]
+                    full_path = os.path.join(
+                        chapter_path, f"{index}.{section_title}")
+                    if os.path.isdir(full_path):
+                        self.ensure_exercises(full_path)
+
+        tree_path = os.path.join(self.root, "tree.json")
+        dump_json(tree_path, self.tree, exist_ok=True, override=True)
+        return self.tree
+
+    def load_levels(self, root_node):
+        levels = []
+        for level in os.listdir(self.root):
+            if not os.path.isdir(level):
+                continue
+            level_path = os.path.join(self.root, level)
+            num, config = self.load_level_node(level_path)
+            levels.append((num, config))
+
+        levels = self.resort_children(self.root, levels)
+        root_node["children"] = [item[1] for item in levels]
+        return root_node
+
+    def load_level_node(self, level_path):
+        config = self.ensure_level_config(level_path)
+        num, name = self.extract_node_env(level_path)
+
+        result = {
+            name: {
+                "node_id": config["node_id"],
+                "keywords": config["keywords"],
+                "children": [],
+            }
+        }
+
+        return num, result
+
+    def load_chapters(self, base, level_node):
+        chapters = []
+        for name in os.listdir(base):
+            full_name = os.path.join(base, name)
+            if os.path.isdir(full_name):
+                num, chapter = self.load_chapter_node(full_name)
+                chapters.append((num, chapter))
+
+        chapters = self.resort_children(base, chapters)
+        level_node["children"] = [item[1] for item in chapters]
+        return level_node
+
+    def load_sections(self, base, chapter_node):
+        sections = []
+        for name in os.listdir(base):
+            full_name = os.path.join(base, name)
+            if os.path.isdir(full_name):
+                num, section = self.load_section_node(full_name)
+                sections.append((num, section))
+
+        sections = self.resort_children(base, sections)
+        chapter_node["children"] = [item[1] for item in sections]
+        return chapter_node
+
+    def resort_children(self, base, children):
+        children.sort(key=lambda item: item[0])
+        for index, [number, element] in enumerate(children):
+            title = list(element.keys())[0]
+            origin = os.path.join(base, f"{number}.{title}")
+            posted = os.path.join(base, f"{index+1}.{title}")
+            if origin != posted:
+                self.logger.info(f"rename [{origin}] to [{posted}]")
+            os.rename(origin, posted)
+        return children
+
+    def ensure_chapters(self):
+        for subdir in os.listdir(self.root):
+            self.ensure_level_config(subdir)
+
+    def load_root(self):
+        config_path = os.path.join(self.root, "config.json")
+        if not os.path.exists(config_path):
+            config = {
+                "tree_name": self.name,
+                "keywords": [],
+                "node_id": self.gen_node_id(),
+            }
+            dump_json(config_path, config, exist_ok=True, override=True)
+        else:
+            config = load_json(config_path)
+            flag, result = self.ensure_node_id(config)
+            if flag:
+                dump_json(config_path, result, exist_ok=True, override=True)
+
+        return config
+
+    def ensure_level_config(self, path):
+        config_path = os.path.join(path, "config.json")
+        if not os.path.exists(config_path):
+            config = {
+                "node_id": self.gen_node_id()
+            }
+            dump_json(config_path, config, exist_ok=True, override=True)
+        else:
+            config = load_json(config_path)
+            flag, result = self.ensure_node_id(config)
+            if flag:
+                dump_json(config_path, config, exist_ok=True, override=True)
+        return config
+
+    def ensure_chapter_config(self, path):
+        config_path = os.path.join(path, "config.json")
+        if not os.path.exists(config_path):
+            config = {
+                "node_id": self.gen_node_id(),
+                "keywords": []
+            }
+            dump_json(config_path, config, exist_ok=True, override=True)
+        else:
+            config = load_json(config_path)
+            flag, result = self.ensure_node_id(config)
+            if flag:
+                dump_json(config_path, config, exist_ok=True, override=True)
+        return config
+
+    def ensure_section_config(self, path):
+        config_path = os.path.join(path, "config.json")
+        if not os.path.exists(config_path):
+            config = {
+                "node_id": self.gen_node_id(),
+                "keywords": [],
+                "children": [],
+                "export": []
+            }
+            dump_json(config_path, config, exist_ok=True, override=True)
+        else:
+            config = load_json(config_path)
+            flag, result = self.ensure_node_id(config)
+            if flag:
+                dump_json(config_path, config, exist_ok=True, override=True)
+        return config
+
+    def ensure_node_id(self, config):
+        if "node_id" not in config:
+            config["node_id"] = self.gen_node_id()
+            return True, config
+        else:
+            return False, config
+
+    def gen_node_id(self):
+        return f"{self.name}-{uuid.uuid4().hex}"
+
+    def extract_node_env(self, path):
+        try:
+            _, dir = os.path.split(path)
+            self.logger.info(path)
+            number, title = dir.split(".", 1)
+            return int(number), title
+        except Exception as error:
+            self.logger.error(f"目录 [{path}] 解析失败，结构不合法，可能是缺少序号")
+            sys.exit(1)
+
+    def load_chapter_node(self, full_name):
+        config = self.ensure_chapter_config(full_name)
+        num, name = self.extract_node_env(full_name)
+        result = {
+            name: {
+                "node_id": config["node_id"],
+                "keywords": config["keywords"],
+                "children": [],
+            }
+        }
+        return num, result
+
+    def load_section_node(self, full_name):
+        config = self.ensure_section_config(full_name)
+        num, name = self.extract_node_env(full_name)
+        result = {
+            name: {
+                "node_id": config["node_id"],
+                "keywords": config["keywords"],
+                "children": config.get("children", [])
+            }
+        }
+        # if "children" in config:
+        #     result["children"] = config["children"]
+        return num, result
+
+    def ensure_exercises(self, section_path):
+        config = self.ensure_section_config(section_path)
+        for e in config.get("export", []):
+            full_name = os.path.join(section_path, e)
+            exercise = load_json(full_name)
+            if "exercise_id" not in exercise:
+                exercise["exercise_id"] = uuid.uuid4().hex
+                dump_json(full_name, exercise)