import requests
import json
import datetime

current_cost = 0
cost_history = dict()
history_index = 0
cost_string = "Cena (EUR/MWh)"
hour_string = "Hodina"
cost_data = "https://www.ote-cr.cz/cs/kratkodobe-trhy/elektrina/denni-trh/@@chart-data"

date = datetime.datetime.now()
params = dict (
    date = date.strftime('%Y-%m-%d')
)

response = requests.get(url=cost_data, params=params)
json = response.json()
cost_axis = ""
hour_axis = ""
for key in json['axis'].keys():
    if json['axis'][key]['legend'] == cost_string:
        cost_axis = key
    if json['axis'][key]['legend'] == hour_string:
        hour_axis = key


for values in json['data']['dataLine']:
    if values['title'] == cost_string:
        for data in values['point']:
           history_index = int(data[hour_axis])-1
           cost_history[history_index] = float(data[cost_axis])
        current_cost = cost_history[date.hour]

print(current_cost)