#!/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 the shell timeout for expect calls
c.timeout = 2 

# ensure that the shell loaded the plugin
assert c.expect("Plugin 'areyousure' initialized...") == 0, "plugin did not initialize"

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

# try running a command
c.sendline("echo The command ran")

# make sure the command shows up
assert c.expect("echo The command ran\r\n") == 0, "The shell did not get the command"

# ensure that shell prints the expected plugin output
assert c.expect(def_module.plugin_prompt) == 0, "Plugin did not print expected output"

# respond yes so that the command will run.
c.sendline("y")

# ensure that the command ran
assert c.expect("The command ran") == 0, "The command did not run"

# try running another command
c.sendline("sleep 20")

# ensure that shell prints the expected plugin output
assert c.expect(def_module.plugin_prompt) == 0, "Plugin did not print expected output"

# respond no this time
c.sendline("n")

# the prompt shour display right away
assert c.expect(def_module.prompt) == 0, "Shell did not return to prompt"

# now exit the shell
c.sendline("exit")
c.sendline("y")

shellio.success()