import config

import os, sqlite3

class dbObject:

 def __init__(self, path=config.dbpath):
  self.conn = sqlite3.connect(path)
  self.cur = self.conn.cursor() 

 def closeConnection(self):
  return self.conn.close()

 def commit(self):
  return self.conn.commit()

 def executeQuery(self, query):
  return self.cur.execute(query)

 def GetConnection(self):
  return self.conn

 def GetCursor(self):
  return self.cur

 def isInitialized(self):
  try:
   self.executeQuery("SELECT * FROM tweets")
   return True
  except:
   return False


def dbCheck(db):
 if dbInitialized(db):
  return True
 raise ValueError("Provided database file " + path + " is not initialized. Create it using makedb.py or csvdb.py")


def dbHelper(path):
 db = dbObject(path)
 dbCheck(db)
 return db


def dbInitialized(db):
 return db.isInitialized()


def fileExists(path):
 return os.path.isfile(path)


def parseArgs(argv):
 args = []
 path = None
 nextpath = False

 for a in argv[1:]:
  if nextpath:
   path = a
   nextpath = False
  elif a == "-f":
   if path != None:
    raise ValueError("You can only pass one database file.")
   nextpath = True
  else:
   args += [a]

 return args, path