#!/usr/bin/python
# -*- coding: utf-8 -*-
# ---------------------------------------------------------------------------------------------------------
# Author : Ulrich Carmesin
# Source : gitea.ucarmesin.de
# ---------------------------------------------------------------------------------------------------------
import basic.program
import utils.config_tool
import utils.db_abstract


class DbFcts(utils.db_abstract.DbFcts):
  """
  This interface defines each necessary connection to any kind of database.
  The specific technique how to connect to the concrete DBMS has to be implemented in the specific tool.
  """

  def __init__(self):
    pass

  def selectRows(self, table):
    """ method to select rows from a database
    statement written in sql """
    tdata = {}
    return tdata

  def deleteRows(self, table):
    """ method to delete rows from a database
    statement written in sql """
    job = basic.program.Job.getInstance()
    verify = -1+job.getDebugLevel("db_tool")
    cmd = "DELETE FROM "+table+";"
    self.comp.m.logInfo(cmd)

  def updateRows(self, statement):
    """ method to delete rows from a database
    statement written in sql """
    raise Exception("method is not implemented")

  def insertRows(self, table, rows):
    """ method to insert rows into a database
    the rows will be interpreted by the ddl of the component
    """
    job = basic.program.Job.getInstance()
    verify = -1+job.getDebugLevel("db_tool")
    cmd = "INSERT INTO "+table+";"
    header = ""
    for h in self.comp.conf["ddl"][table]["fields"]:
      print(h)
      header += ", "+h
    cmd += " (" + header[1:]+" ) "
    rowvalues = ""
    for r in rows:
      print("r-----------------")
      print(r)
      rowvalues = ""
      cmd += "\n ( "
      for h in self.comp.conf["ddl"][table]["fields"]:
        print("h "+h)
        if (h in r):
          rowvalues += ", "+self.getDbValue(self.comp.conf["ddl"][table]["data"][h], r[h])
        else:
          rowvalues += ", "+self.getDbValue(self.comp.conf["ddl"][table]["data"][h], "")
        print("rv " + rowvalues)
      cmd += rowvalues[1:]+" ),"
    cmd = cmd[0:-1]+";"
    self.comp.m.logInfo(cmd)

  def getConnector(self):
    """ add-on-method to get the connector
    this method should only called by the class itself """
    job = basic.program.Job.getInstance()
    return ""