#!/usr/bin/env python
'''
Scenarium usage example

Name of this script should be exactly the same as in scenaruim URL but with '.py' extension

URL  -  scm:scen_ecri_calinj1#scen_ecri_calinj1_xxxxx.xml

'run' procedure will be executed by pyren script
 
'''

import os
import sys
import re
import time
import string
import mod_globals
import mod_utils
import mod_ecu
import mod_db_manager
import mod_ecu_mnemonic
from   mod_utils     import pyren_encode
from   mod_utils     import clearScreen
import xml.dom.minidom

def run( elm, ecu, command, data ):
  '''
  MAIN function of scenarium
  
  Parameters:
      elm     - refernce to adapter class
      ecu     - reference to ecu class
      command - refernce to the command this scenarium belongs to
      data    - name of xml file with parameters from scenarium URL
  '''
  
  clearScreen()
  header =  '['+command.codeMR+'] '+command.label

  ScmSet = {}
  ScmParam = {}

  def get_message( msg, encode = 1 ):
    if msg in list(ScmParam.keys()):
      value = ScmParam[msg]
    else:
      value = msg
    if value.isdigit() and value in list(mod_globals.language_dict.keys()):
      if encode:
        value = pyren_encode(mod_globals.language_dict[value])
      else:
        value = mod_globals.language_dict[value]
    return value

  def get_message_by_id( id, encode = 1 ):
    if id.isdigit() and id in list(mod_globals.language_dict.keys()):
      if encode:
        value = pyren_encode(mod_globals.language_dict[id])
      else:
        value = mod_globals.language_dict[id]
    return value
  
  #
  #      Data file parsing
  #  
  DOMTree = xml.dom.minidom.parse(mod_db_manager.get_file_from_clip(data))
  ScmRoom = DOMTree.documentElement
  
  ScmParams = ScmRoom.getElementsByTagName("ScmParam")
 
  for Param in ScmParams:
    name  = pyren_encode( Param.getAttribute("name") )
    value = pyren_encode( Param.getAttribute("value") )
        
    ScmParam[name] = value
    
  ScmSets = ScmRoom.getElementsByTagName("ScmSet")
 
  for Set in ScmSets:
    if len(Set.attributes) != 1:  
      setname  = pyren_encode(mod_globals.language_dict[Set.getAttribute("name")])
      ScmParams = Set.getElementsByTagName("ScmParam")
    
      for Param in ScmParams:
        name  = pyren_encode( Param.getAttribute("name")  )
        value = pyren_encode( Param.getAttribute("value") )
        
        ScmSet[setname]= value
        ScmParam[name] = value
  
  confirm = get_message_by_id('19800')
  missing_data_message = get_message_by_id('882')
  title = get_message('Title')
  messageInfo = get_message('Message1')
  succesMessage = get_message('CommandFinished')
  failMessage = get_message('CommandImpossible')

  mnemonics = ecu.get_ref_id(ScmParam['default']).mnemolist

  if mnemonics[0][-2:] > mnemonics[1][-2:]:
    mnemo1 = mnemonics[1]
    mnemo2 = mnemonics[0]
  else:
    mnemo1 = mnemonics[0]
    mnemo2 = mnemonics[1]
  
  byteFrom = int(mnemo1[-2:])
  byteTo = int(re.findall('\d+',mnemo2)[1])
  byteCount = byteTo - byteFrom - 1
  resetBytes = byteCount * '00'
  params_to_send_length = int(mnemo2[-2:])

  mnemo1Data = mod_ecu_mnemonic.get_mnemonic(ecu.Mnemonics[mnemo1], ecu.Services, elm, 1)
  mnemo2Data = mod_ecu_mnemonic.get_mnemonic(ecu.Mnemonics[mnemo2], ecu.Services, elm, 1)

  paramsToSend = mnemo1Data + resetBytes + mnemo2Data

  fap_command_sids = ecu.get_ref_cmd(ScmParam['Cmde1']).serviceID
  if len(fap_command_sids) and not mod_globals.opt_demo:
    for sid in fap_command_sids:
      if len(ecu.Services[sid].params):
        if (len(ecu.Services[sid].startReq + paramsToSend)//2 != params_to_send_length):
          input(missing_data_message + "\n\nPress ENTER to exit")
          return

  clearScreen()

  print(title)
  print('*'*80)
  print(messageInfo)
  print('*'*80)
  print()
  ch = input(confirm + ' <YES/NO>: ')
  while (ch.upper()!='YES') and (ch.upper()!='NO'):
    ch = input(confirm + ' <YES/NO>: ')
  if ch.upper()!='YES':
    return

  clearScreen()
  
  print()
  response = ecu.run_cmd(ScmParam['Cmde1'], paramsToSend)
  print()

  if 'NR' in response:
    print(failMessage)
  else:
    print(succesMessage)

  print()
  ch = input("Press ENTER to exit")
  return