from flask import Flask, jsonify, send_from_directory

app = Flask(__name__, static_folder="public", static_url_path="")


# 根路径返回 index.html
@app.route("/")
def serve_index():
    return send_from_directory(app.static_folder, "index.html")


# API 子路径，提供 Python 知识点数据
@app.route("/api/python-tips")
def python_tips():
    tips = {
        "message": "欢迎来到 Python 知识点",
        "tips": [
            {
                "title": "变量和数据类型",
                "description": "Python 是一种动态类型语言，变量不需要显式声明类型。常见的数据类型有整数（int）、浮点数（float）、字符串（str）、列表（list）、字典（dict）等。",
                "example": "name = 'Kimi'\nage = 25\nis_student = True"
            },
            {
                "title": "条件语句",
                "description": "使用 `if`、`elif` 和 `else` 来实现条件判断。",
                "example": "if age >= 18:\n    print('成年人')\nelse:\n    print('未成年人')"
            },
            {
                "title": "循环语句",
                "description": "Python 提供 `for` 和 `while` 循环，用于重复执行代码块。",
                "example": "for i in range(5):\n    print(i)\n\ni = 0\nwhile i < 5:\n    print(i)\n    i += 1"
            },
            {
                "title": "函数定义",
                "description": "使用 `def` 关键字定义函数，可以有参数和返回值。",
                "example": "def greet(name):\n    return f'Hello, {name}!'\n\nprint(greet('Kimi'))"
            },
            {
                "title": "列表操作",
                "description": "列表是 Python 中常用的数据结构，支持添加、删除、排序等操作。",
                "example": "fruits = ['apple', 'banana', 'cherry']\nfruits.append('orange')\nprint(fruits)\nfruits.pop()\nprint(fruits)"
            },
            {
                "title": "字典操作",
                "description": "字典是一种键值对的数据结构，通过键访问值。",
                "example": "person = {'name': 'Kimi', 'age': 25}\nprint(person['name'])\nperson['age'] = 26\nprint(person)"
            },
            {
                "title": "异常处理",
                "description": "使用 `try` 和 `except` 来捕获和处理异常。",
                "example": "try:\n    result = 10 / 0\nexcept ZeroDivisionError:\n    print('除数不能为零')"
            },
            {
                "title": "模块和包",
                "description": "Python 的模块是包含函数和变量的文件，包是模块的集合。使用 `import` 导入模块。",
                "example": "import math\nprint(math.sqrt(16))"
            },
            {
                "title": "文件操作",
                "description": "使用 `open()` 函数打开文件，支持读写操作。",
                "example": "with open('example.txt', 'w') as file:\n    file.write('Hello, world!')\n\nwith open('example.txt', 'r') as file:\n    content = file.read()\n    print(content)"
            }
        ]
    }
    return jsonify(tips)


if __name__ == "__main__":
    app.run(debug=True,host="0.0.0.0", port=80)