import.py

#To import data you need a excel style CSV (";" as seperator) with the first as short url (e.g. kurz.ml/example) and in the seccond row the long url (e.g http://example.com).
#Then run docker -it <container_name> python3 import.py Now you can paste the CSV as text and press enter again at the end
import sqlite3
import os
def table_check(): #Check if database exists
    create_table = """
        CREATE TABLE WEB_URL(
        ID INTEGER PRIMARY KEY AUTOINCREMENT,
        LONG_URL TEXT NOT NULL, SHORT_URL TEXT NOT NULL
        );
        """
    with sqlite3.connect('db/urls.db') as conn:
        cursor = conn.cursor()
        try: #Try making the database structure, if fails Database was already created.
            cursor.execute(create_table)
        except sqlite3.OperationalError:
            pass


table_check()
with sqlite3.connect('db/urls.db') as conn:
    cursor = conn.cursor()
    lines = []
    print("ready to recive data, please paste your data to import and press ENTER")
    while True:
        line = input()
        if line:
            lines.append(line)
        else:
            break
    text = lines
    entries = len(text) #Count the entries (for the output in the for loop)
    counter = 1
    for lines in text:
        print("Importing " + str(counter) + " from " + str(entries)) #Make a progress message (mormaly unnecessary, because import is to quick (<1s))
        SHORT_URL = lines.split(";")[0].replace("\n", "").replace("\r","") #Split the CSV at the ";" then use the first one and replace all linebreaks
        LONG_URL = lines.split(";")[1].replace("\n", "").replace("\r","") #Split the CSV at the ";" then use the seccond one and replace all linebreaks
        res = cursor.execute( #Insert the data in the SQL table
            'INSERT INTO WEB_URL (LONG_URL, SHORT_URL) VALUES (?, ?)',
            [LONG_URL, SHORT_URL.lower()]
        )
        counter = counter + 1 #Add 1 to counter, for progress