208 lines
3.7 KiB
Python
Executable File
208 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python3
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'''
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Dendrachy Network File-System (dnfs)
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树状网络文件系统
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可能加入数据库加密功能。
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'''
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from flask import Flask, request, jsonify, render_template
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from flask_cors import CORS
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from flask_sqlalchemy import SQLAlchemy
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from waitress import serve
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import os
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basedir = os.path.abspath(os.path.dirname(__file__))
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app = Flask(__name__)
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CORS(app)
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app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///' + os.path.join(basedir, 'notes.db')
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app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
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db = SQLAlchemy(app)
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class Note(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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pid = db.Column(db.Integer, nullable=False)
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title = db.Column(db.String(128), nullable=False)
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content = db.Column(db.Text, nullable=False)
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def __repr__(self):
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return f"<Node {self.title}>"
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with app.app_context():
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db.create_all()
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# eg: {
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# "pid": "0",
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# "title": "test",
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# "content": "hello"
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#}
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@app.route('/add_note', methods=['POST'])
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def add_note():
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data = request.get_json()
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pid = data.get('pid')
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title = data.get('title')
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content = data.get('content')
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if pid is None or not title or not content:
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return jsonify({"error": "Pid, title and content are required"}), 400
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new_note = Note(pid=int(pid), title=title, content=content)
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with app.app_context():
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db.session.add(new_note)
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db.session.commit()
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return jsonify({"message": "Note added successfully"}), 200
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# {“pid”: "0"}
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@app.route('/get_notes', methods=["POST"])
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def get_notes():
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data = request.get_json()
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pid = data.get('pid')
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if not pid:
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pid = 0
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with app.app_context():
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notes = Note.query.filter(Note.pid == int(pid))
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result = [{'id': note.id, 'pid': note.pid, 'title': note.title, 'content':note.content} for note in notes]
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return jsonify(result), 200
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# eg: {"id": "1"}
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@app.route('/delete_note', methods=['POST'])
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def delete_note():
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data = request.get_json()
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note_id = data.get('id')
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if note_id:
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return jsonify({"error": "Note ID is required"}), 400
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with app.app_context():
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notes = Note.query.filter(Note.pid == int(note_id))
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# 有子节点的情况不可删除
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if not notes:
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return jsonify({'error': 'this node has a child'}), 400
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note = Note.query.get(note_id)
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if note:
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db.session.delete(note)
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db.session.commit()
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return jsonify({'message': "Note deleted successfully"}), 200
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else:
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return jsonify({"error": "Note not found"}), 404
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# eg: {
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# "id": "1",
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# "pid": "0",
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# "title": "test",
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# "content": "hello"
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#}
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@app.route('/update_note', methods=['POST'])
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def update_note():
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data = request.get_json()
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id = data.get('id')
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pid = data.get('pid')
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title = data.get('title')
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content = data.get('content')
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if id is None or pid is None or not title or not content:
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return jsonify({"error": "Invalid param"}), 400
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with app.app_context():
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note = Note.query.get(id)
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if note:
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note.pid = pid
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note.title = title
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note.content = content
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db.session.commit()
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return jsonify({'message': "Your change is up-to-date."}), 200
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else:
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return jsonify({'error': 'Note not found'}), 400
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#@app.route('/')
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#def view_page():
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# """返回应用主页"""
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# return render_template('index.html')
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ADDR='127.0.0.1'
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PORT=8006
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if __name__ == "__main__":
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print(f'Listen at http://{ADDR}:{PORT}')
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#app.run(host="127.0.0.1", port=8006)
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serve(app, host='127.0.0.1', port=8006)
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