#!/usr/bin/python
#
# Block header comment
#
#
import sys, imp, atexit
sys.path.append("/home/courses/cs3214/software/pexpect-dpty/");
import pexpect, shellio, signal, time, os, re, proc_check

#Ensure the shell process is terminated
def force_shell_termination(shell_process):
	c.close(force=True)

#pulling in the regular expression and other definitions
definitions_scriptname = sys.argv[1]
plugin_dir = sys.argv[2]
def_module = imp.load_source('', definitions_scriptname)
logfile = None
if hasattr(def_module, 'logfile'):
    logfile = def_module.logfile

#spawn an instance of the shell
c = pexpect.spawn(def_module.shell + plugin_dir, drainpty=True, logfile=logfile)

atexit.register(force_shell_termination, shell_process=c)

# set timeout for all following 'expect*' calls to 2 seconds
c.timeout = 5

# ensure that the shell prints the expected prompt
assert c.expect(def_module.custom_prompt) == 0, "Shell did not print expected prompt"

# run command
c.sendline('maxstr')
(cmd, usage_msg) = shellio.parse_regular_expression(c, def_module.entry_regex)
assert def_module.cmd_usage_msg['usage'] == usage_msg, "Shell did not print expected Usage"

# run command
c.sendline("maxstr aaa bbb 123 xyz")
(unused, result) = shellio.parse_regular_expression(c, def_module.result_regex)
assert "xyz"  == result, "Shell did not print expected max value"

shellio.success()