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crud.py
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crud.py
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import os.path
from google.auth.transport.requests import Request
from google.oauth2.credentials import Credentials
from google_auth_oauthlib.flow import InstalledAppFlow
from googleapiclient.discovery import build
from google.auth.exceptions import MutualTLSChannelError
import psycopg2
from psycopg2.extras import execute_values
from googleapiclient.errors import HttpError
SCOPES = ["https://www.googleapis.com/auth/spreadsheets"]
SPREADSHEET_ID = "1SvGvOXTO-SMloCklizlcN252uaaOw-9XxEL-x-fDXGw"
RANGE_NAME = "Sheet1"
db_name = "superjoin"
db_user = "postgres"
db_password = "IamaCSstudent"
db_host = "localhost"
def sheet_service():
creds = None
if os.path.exists("token.json"):
creds = Credentials.from_authorized_user_file("token.json", SCOPES)
if not creds or not creds.valid:
if creds and creds.expired and creds.refresh_token:
creds.refresh(Request())
else:
flow = InstalledAppFlow.from_client_secrets_file("credentials.json", SCOPES)
creds = flow.run_local_server(port=5000)
with open("token.json", "w") as token:
token.write(creds.to_json())
try:
service = build("sheets", "v4", credentials=creds)
return service
except MutualTLSChannelError as err:
print(err)
def spawn_table(conn, name):
# conn = get_db_instance()
query = f"""create table if not exists {name} (
id serial primary key,
company text,
contact text,
country text
)"""
cursor = conn.cursor()
cursor.execute(query)
def get_db_instance():
try:
conn = psycopg2.connect(
host=db_host,
database=db_name,
user=db_user,
password=db_password,
port=5432
)
return conn
except Exception as e:
print(e)
exit(1)
def fetch_db(conn):
cursor = conn.cursor()
cursor.execute("""select * from company""")
rows = cursor.fetchall()
# for row in rows:
# print(row)
return rows
def fetch_sheet(sheet_service, id, sheet_name):
sheet = sheet_service.spreadsheets()
res = sheet.values().get(spreadsheetId=id, range=sheet_name).execute()
vals = res.get("values", [])
if not vals:
print("Sheet is empty!")
return
return vals
def update_db(conn, vals):
cursor = conn.cursor()
vals = vals[1:]
# cursor.execute("""drop table company""")
cursor.execute("""truncate table company""")
cursor.execute("""ALTER SEQUENCE company_id_seq RESTART WITH 1""")
# spawn_table(conn, 'company')
# print("test")
execute_values(cursor,
"""insert into company (company, contact, country) values %s""",
[tuple(row) for row in vals]
)
conn.commit()
def update_sheet(sheet_service, id, sheet_name, data):
no_index_data = [x[1:] for x in data]
print(no_index_data)
body = {"values": no_index_data}
try:
sheet_service.spreadsheets().values().update(
spreadsheetId=id, range=sheet_name, valueInputOption="USER_ENTERED", body=body
).execute()
except HttpError as e:
print(f"Encountered error: {e} while trying to update sheet!")
def sync(dbChange):
if dbChange:
service = sheet_service()
db_data = fetch_db()
update_sheet(service, SPREADSHEET_ID, RANGE_NAME, db_data)
else:
conn = get_db_instance()
sheet_service = sheet_service()
spawn_table(conn, 'company')
data = fetch_sheet(sheet_service, SPREADSHEET_ID, RANGE_NAME)
update_db(conn, data)
# conn = get_db_instance()
# sheet_service = sheet_service()
# spawn_table(conn, 'company')
# data = fetch_sheet(sheet_service, SAMPLE_SPREADSHEET_ID, SAMPLE_RANGE_NAME)
# print(len(data))
# update_db(conn, data)
# data = fetch_db(conn)
# update_sheet(sheet_service, SAMPLE_SPREADSHEET_ID, SAMPLE_RANGE_NAME, data)