#coding:utf-8
#
# id:           bugs.core_4224
# title:        Database replace through services API fails
# decription:
#                   13.04.2021. Adapted for run both on Windows and Linux. Checked on:
#                      Windows: 3.0.8.33445, 4.0.0.2416
#                      Linux:   3.0.8.33426, 4.0.0.2416
#
# tracker_id:   CORE-4224
# min_versions: ['2.5.3']
# versions:     2.5.3
# qmid:         None

import pytest
import os
from io import BytesIO
from firebird.qa import db_factory, python_act, Action
from firebird.driver import SrvRestoreFlag

# version: 2.5.3
# resources: None

substitutions_1 = []

init_script_1 = """"""

db_1 = db_factory(sql_dialect=3, init=init_script_1)

# test_script_1
#---
# import os
#  import time
#  import subprocess
#
#  os.environ["ISC_USER"] = user_name
#  os.environ["ISC_PASSWORD"] = user_password
#  db_conn.close()
#
#  #--------------------------------------------
#
#  def flush_and_close( file_handle ):
#      # https://docs.python.org/2/library/os.html#os.fsync
#      # If you're starting with a Python file object f,
#      # first do f.flush(), and
#      # then do os.fsync(f.fileno()), to ensure that all internal buffers associated with f are written to disk.
#      global os
#
#      file_handle.flush()
#      if file_handle.mode not in ('r', 'rb') and file_handle.name != os.devnull:
#          # otherwise: "OSError: [Errno 9] Bad file descriptor"!
#          os.fsync(file_handle.fileno())
#      file_handle.close()
#
#  #--------------------------------------------
#
#  def cleanup( f_names_list ):
#      global os
#      for i in range(len( f_names_list )):
#         if type(f_names_list[i]) == file:
#            del_name = f_names_list[i].name
#         elif type(f_names_list[i]) == str:
#            del_name = f_names_list[i]
#         else:
#            print('Unrecognized type of element:', f_names_list[i], ' - can not be treated as file.')
#            print('type(f_names_list[i])=',type(f_names_list[i]))
#            del_name = None
#
#         if del_name and os.path.isfile( del_name ):
#             os.remove( del_name )
#
#  #--------------------------------------------
#
#  tmpsrc='$(DATABASE_LOCATION)bugs.core_4224.fdb'
#  tmpbkp='$(DATABASE_LOCATION)tmp_core_4224.fbk'
#
#  fn_bkp_log=open( os.path.join(context['temp_directory'],'tmp_4224_backup.log'), 'w')
#  fn_bkp_err=open( os.path.join(context['temp_directory'],'tmp_4224_backup.err'), 'w')
#
#  subprocess.call([context['fbsvcmgr_path'],"localhost:service_mgr",
#                   "action_backup", "dbname", tmpsrc, "bkp_file", tmpbkp ],
#                  stdout=fn_bkp_log, stderr=fn_bkp_err)
#  flush_and_close( fn_bkp_log )
#  flush_and_close( fn_bkp_err )
#
#  src_timestamp1 = -1
#  if os.path.isfile(tmpsrc):
#    src_timestamp1 = os.path.getmtime(tmpsrc)
#
#  fn_res_log=open( os.path.join(context['temp_directory'],'tmp_4224_restore.log'), 'w')
#  fn_res_err=open( os.path.join(context['temp_directory'],'tmp_4224_restore.err'), 'w')
#  subprocess.call([context['fbsvcmgr_path'],"localhost:service_mgr",
#                   "action_restore", "res_replace", "verbose", "bkp_file", tmpbkp, "dbname", tmpsrc ],
#                  stdout=fn_res_log, stderr=fn_res_err)
#  flush_and_close( fn_res_log )
#  flush_and_close( fn_res_err )
#
#  src_timestamp2 = -2
#  if os.path.isfile(tmpsrc):
#    src_timestamp2 = os.path.getmtime(tmpsrc)
#
#  # Log ERRORS on BACKUP should be EMPTY:
#  with open( fn_bkp_err.name,'r') as f:
#      for line in f:
#          if line.split():
#             print("UNEXPECTED BACKUP STDERR: " + line)
#
#
#  # Log ERRORS on RESTORE should also be EMPTY:
#  with open( fn_res_err.name,'r') as f:
#      for line in f:
#          if line.split():
#              print("UNEXPECTED RESTORE STDERR: " + line)
#
#  # If restore will fail due to source database in use, its error logs will be like this:
#  # RESTORE STDERR: could not drop database <...> (database might be in use)
#  # -Exiting before completion due to errors
#  # Problems on backup or restore. Timestamps difference is 0.0
#
#  # Difference of timestamps should be positive number:
#  src_timestamps_diff = src_timestamp2 - src_timestamp1
#
#  if src_timestamps_diff > 0:
#      print("OK: 'fbsvcmgr action_restore res_replace' DID change database file.")
#  else:
#      print("Problems on backup or restore. Timestamps difference is "+str(src_timestamps_diff))
#
#  #####################################################################
#  # Cleanup:
#
#  # do NOT remove this pause otherwise some of logs will not be enable for deletion and test will finish with
#  # Exception raised while executing Python test script. exception: WindowsError: 32
#  time.sleep(1)
#  cleanup( (fn_bkp_log, fn_bkp_err, fn_res_log, fn_res_err, tmpbkp) )
#
#
#---

act_1 = python_act('db_1', substitutions=substitutions_1)

@pytest.mark.version('>=2.5.3')
def test_1(act_1: Action):
    src_timestamp1 = os.path.getmtime(act_1.db.db_path)
    backup = BytesIO()
    with act_1.connect_server() as srv:
        srv.database.local_backup(database=str(act_1.db.db_path), backup_stream=backup)
        backup.seek(0)
        srv.database.local_restore(database=str(act_1.db.db_path), backup_stream=backup,
                                   flags=SrvRestoreFlag.REPLACE)
    src_timestamp2 = os.path.getmtime(act_1.db.db_path)
    assert src_timestamp2 - src_timestamp1 > 0