import sys
import time
import sqlite3

try:
    amount_of_deals = sys.argv[1]
    pair = None
    if len(sys.argv) > 2:
        pair = sys.argv[2]
except Exception as e:
    print(e)
    print("Usage: python3 last_n_deals.py int <pair>")
    sys.exit()

connection = sqlite3.connect('profits_database.db')
cursor = connection.cursor()
extra_query = ""
if pair:
    extra_query = f"WHERE pair = '{pair}'"
cursor.execute(f'SELECT * FROM profits_table {extra_query} ORDER BY timestamp DESC LIMIT ?', (amount_of_deals,))
deals = cursor.fetchall()
connection.close()


for line in deals[::-1]:
    human_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(int(line[0])))
    print(human_time,line[1],round(line[2],2),line[3])