#!/bin/python3

import os
import sys
import json
import psycopg2
import requests

from datetime import datetime
from datetime import timedelta
from tzlocal import get_localzone


# variables
apiKey = os.environ['el_tibber_token']
apiUrl = "https://api.tibber.com/v1-beta/gql"

pg_db = os.environ['el_pg_db']
pg_host = os.environ['el_pg_host']
pg_table = "tibber_consumption"

startTime = datetime.now(get_localzone()) - timedelta(days = 1)
startTime = startTime.isoformat('T')

endTime = datetime.now(get_localzone()).isoformat('T')

# Get the data
try:
    url = apiUrl

    # Request headers
    hdr = {
        'Authorization': "Bearer " + apiKey,
        'Content-Type': 'application/json',
    }

    body = {"query":"""{ 
            viewer { 
                homes { 
                    consumption(resolution: HOURLY, last:100) {
                        nodes {
                            from
                            to
                            cost
                            unitPrice
                            unitPriceVAT
                            consumption
                            consumptionUnit
                        }
                    }
                }
            } }"""}

    response = requests.post(url, headers=hdr, json=body)
    if response.status_code != 200:
        print(response.status_code)
        print("Oh shit")
        response.raise_for_status()

except Exception as e:
    print("oh lol")
    sys.exit(e)

data = response.json()

numdata = len(data["data"]["viewer"]["homes"][0]["consumption"]["nodes"])
print("Got " + str(numdata) + " rows from Tibber")

### insert data into database
# consumption
values = []
for item in data["data"]["viewer"]["homes"][0]["consumption"]["nodes"]:
    if item["consumption"] is not None:
        values.append((item["from"],item["to"],item["consumption"],item["consumptionUnit"],item["cost"],item["unitPrice"],item["unitPriceVAT"]))

# connect to db
conn = psycopg2.connect(database=pg_db, host=pg_host)
cur = conn.cursor()

# count rows before we start
cur.execute("SELECT COUNT(*) FROM " + pg_table)
before = cur.fetchone()

# insert data
try:
    cur.executemany("INSERT INTO " + pg_table + " VALUES(%s,%s,%s,%s,%s,%s,%s) ON CONFLICT (startTime,endTime) DO NOTHING", values)
    conn.commit()
except Exception as e:
    conn.rollback()
    raise e

# count rows after we finnish
cur.execute("SELECT COUNT(*) FROM " + pg_table)
after = cur.fetchone()

# count *new* rows
newRows = after[0] - before[0]

# close connection
conn.close()

print("Successfully inserted " + str(newRows) + " records into the database")