#!/bin/python3

import os
import sys
import json
import psycopg2
import requests

lat = str(os.environ['el_yr_lat'])
lon = str(os.environ['el_yr_lon'])

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

apiUrl = "https://api.met.no/weatherapi/locationforecast/2.0/compact?lat=" + lat + "&lon=" + lon

### Get the data
try:
    url = apiUrl

    # Request headers
    hdr = {
        'User-Agent': 'gratis.morell@litepost.no',
        'Cache-Control': 'no-cache',
    }

    response = requests.get(url, headers=hdr)
    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()






### insert data into database

values = []
for item in data["properties"]["timeseries"]:
    details = item["data"]["instant"]["details"]
    values.append((item["time"],details["air_temperature"],details["air_pressure_at_sea_level"],details["cloud_area_fraction"],details["relative_humidity"],details["wind_from_direction"],details["wind_speed"]))

# connect to database
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 (time) DO UPDATE SET 
                        air_temperature=EXCLUDED.air_temperature,
                        air_pressure_at_sea_level=EXCLUDED.air_pressure_at_sea_level,
                        cloud_area_fraction=EXCLUDED.cloud_area_fraction,
                        relative_humidity=EXCLUDED.relative_humidity,
                        wind_from_direction=EXCLUDED.wind_from_direction,
                        wind_speed=EXCLUDED.wind_speed,
                        updated=now()
                        """, 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. Might have updated a bunch more.")