from datetime import datetime, timezone, timedelta
import time
import threading
import os
import sys
import os.path
import psycopg2
import pytz
import dateutil
from dateutil.parser import parse
from decimal import *
getcontext().prec = 2

###############################################################################
# get fees rows
###############################################################################

def print_fees():

    try:

        conn = psycopg2.connect(database = budget_db, user = budget_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute("SELECT fee_description, payment_type, fee FROM fees")

        rows = cur.fetchall()

        for row in rows:

            print('fee description: ' + str(row[0]), ', payment type: ' + str(row[1]), 'fee: ' + str(row[2]))

        cur.close()

    except (Exception, psycopg2.DatabaseError) as error:

        print(error)

    finally:

        if conn is not None:

            conn.close()

###################################################################################
# add fees to database
###################################################################################

def insert_fees(fee_description, payment_type, fee):

    sql  = "INSERT INTO fees(fee_description, payment_type, fee) VALUES(%s,%s,%s)"

    try:

        conn = psycopg2.connect(database = budget_db, user = budget_db_user, password = "", host = "/var/run/postgresql", port = "5432")

        cur = conn.cursor()

        cur.execute(sql, (fee_description, payment_type, fee))
        print("\n")
        print("Updating fees...")

        conn.commit()

        cur.close()

    except (Exception, psycopg2.DatabaseError) as error:

        print(error)

    finally:

        if conn is not None:

            conn.close()

###############################################################################
# INITIALISATION
###############################################################################

# Returns the parameter from the specified file
def get_parameter( parameter, file_path ):
    # Check if db_config.txt file exists
    if not os.path.isfile(file_path):
        if file_path == "config/db_config.txt":
          print("File %s not found, exiting. Run db-setup.py."%file_path)
        sys.exit(0)

    # Find parameter in file
    with open( file_path ) as f:
        for line in f:
            if line.startswith( parameter ):
                return line.replace(parameter + ":", "").strip()

    # Cannot find parameter, exit
    print(file_path + "  Missing parameter %s "%parameter)
    print("Run setup.py")
    sys.exit(0)

# Load configuration from config file
config_filepath = "config/db_config.txt"
budget_db = get_parameter("budget_db", config_filepath) # E.g., budget
budget_db_user = get_parameter("budget_db_user", config_filepath) # E.g., mastodon

###############################################################################

while True:

    fee_description = input("Fee description? (q to quit) ")
    if fee_description == 'q':
        sys.exit("Bye")

    fee_type = input("Fee type? (in ex. annual) ")

    fee = input("Fee? ")
    if fee == '':
        fee = '0.00'
    fee = round(float(fee),2)

    insert_fees(fee_description, fee_type, fee)

    print_fees()