mash-server/bettwaage-plotter/main.py

import requests
import matplotlib.pyplot as plt
from datetime import datetime
import json


file_path = "history.json"
history_url = "http://192.168.178.84:9587/bettwaage/history"

convert_time_to_seconds = True

# Script
data = None

if file_path is None:
    data = requests.get(history_url)
    data = data.json()
else:
    with open(file_path, "r") as fp:
        data = json.load(fp)

# make data
x = [d["timestamp"] for d in data]
x = [datetime.strptime(d, "%Y-%m-%d %H:%M:%S.%f") for d in x]

if convert_time_to_seconds:
    max_time = max(x)
    x = [(d - max_time).total_seconds() for d in x]

total = [d["total"] for d in data]
tl = [d["tl"] for d in data]
tr = [d["tr"] for d in data]
bl = [d["bl"] for d in data]
br = [d["br"] for d in data]


fig, ax1 = plt.subplots()

ax1.set_xlabel("Time (s)")
ax1.set_ylabel("Weight (kg)")

line_total = ax1.plot(x, total, color="tab:blue")
line_tl = ax1.plot(x, tl, color="tab:red")
line_tr = ax1.plot(x, tr, color="tab:green")
line_bl = ax1.plot(x, bl, color="tab:orange")
line_br = ax1.plot(x, br, color="tab:purple")

ax1.legend(["Total", "Top Left", "Top Right", "Bottom Left", "Bottom Right"])

plt.show()