import network  
import urequests  # MicroPython版的requests库  
from machine import I2C, Pin  
from ssd1306 import SSD1306_I2C  
import re  # 使用正则表达式解析HTML  

# 连接到Wi-Fi  
wlan = network.WLAN(network.STA_IF)  
wlan.active(True)  
wlan.connect('Wokwi-GUEST', '')  

# 等待连接  
while not wlan.isconnected():  
    pass  

print('网络配置:', wlan.ifconfig())  

# 金价的URL  
gold_price_url = 'https://www.huangjinjiage.com/'  # 替换为实际的URL  

def get_gold_price(url):  
    try:  
        # 发送GET请求  
        response = urequests.get(url)  
        match = re.search(r'class="value-box die">([0-9,.]+)<i>元/克</i></div>', response.text)  
        
        if match:  
            return match.group(1).strip()  # 返回提取的金价文本  
        else:  
            return "金价信息未找到"  

    except Exception as e:  
        return f"请求或解析错误: {str(e)}"  

# 初始化I2C和OLED显示  
i2c = I2C(scl=Pin(22), sda=Pin(21))  
oled = SSD1306_I2C(128, 64, i2c)  

# 调用函数并打印结果  
gold_price = get_gold_price(gold_price_url)  
print(gold_price)  

# 在OLED上显示金价  
oled.fill(0)  # 清空显示  
oled.text("gold price:", 0, 0)  
oled.text(gold_price, 0, 10)  
oled.show()