#!/usr/bin/env python
#
#  et_mon_dir.py /tmp/et_sys_test "/gluex/data/rawdata/curr/rawdata/active/RunPeriod-2018-08/rawdata/Run*/*.evio"
#
#
#

import subprocess
import time
import glob
import sys
import os

if len(sys.argv) !=3 :
	print ''
	print 'Usage:'
	print '    et_mon_dir.py et_file regexp'
	print ''
	print 'where "et_file" is something like /tmp/et_sys_monitoring'
	print 'and regexp gives a file pattern like:'
	print ''
	print '   "/gluex/data/rawdata/curr/rawdata/active/RunPeriod-2018-08/rawdata/Run051739/*.evio"'
	print ''
	print '(remember the quotes if using a wildcard!)'
	print ''
	sys.exit(0)
	

et_file = sys.argv[1]
mon_pat = sys.argv[2]
et_prescale = '5'

#base_dir = os.path.dirname(mon_pat)

print 'mon_pat = ' + mon_pat
#print 'base_dir = ' + base_dir

last_file =''

while True:

	#if ! os.path.exists(base_dir): break

	files = glob.glob(mon_pat)
	files.sort(key=os.path.getmtime)
	print 'Found %d files matching %s' % (len(files), mon_pat)
	if len(files)>=2:
		most_recent_file = str(files[-2])
		if most_recent_file != last_file:
			cmd = ['file2et', '-f', et_file, '-s', et_prescale, most_recent_file]
			print ' '.join(cmd)
			subprocess.call(cmd)
			last_file = most_recent_file
	time.sleep(2.0)

print ''
#print 'Directory ' + base_dir + ' has disappeared. Stopping'