#!/usr/bin/env python

import os, sys, tempfile
from subprocess import Popen, PIPE

def which(file, path = None):
    from os import environ, pathsep
    from os.path import join, isfile
    if path is None: path = environ.get("PATH", "")
    path = path.split(pathsep)
    for p in path:
        if isfile(join(p,file)):
            return join(p,file)
    return None

retcode = 0
try:
    
    if len(sys.argv) > 1:
        optfiles = sys.argv[1:]
    else:
        optfiles = [ "main.py" ]
    
    # parse the option file and cache the configuration (python only)
    cmd = ["python", which("gaudirun.py"),
           "-n", "-v", "--output", "out1.py" ] + optfiles
    proc = Popen(cmd, stdout=PIPE)
    print "=========================================="
    print "======== First pass (python only) ========"
    print "=========================================="
    print "= cmd:", " ".join(cmd)
    out, err = proc.communicate()
    print out
    if err:
        print "=== stderr: ==="
        print err
    expected = eval(open("out1.py").read())
    
    # parse the option file, export old options, parse again
    cmd = ["python", which("gaudirun.py"),
           "-n", "-v", "--old-opts", "--output", "out.opts" ] + optfiles
    proc = Popen(cmd, stdout=PIPE, stderr=PIPE)
    print ""
    print "=========================================="
    print "========== Second pass (export) =========="
    print "=========================================="
    print "= cmd:", " ".join(cmd)
    out, err = proc.communicate()
    print out
    if err:
        print "=== stderr: ==="
        print err
    
    cmd = ["python", which("gaudirun.py"),
           "-n", "-v", "--output", "out2.py", "out.opts"]
    proc = Popen(cmd, stdout=PIPE, stderr=PIPE)
    print ""
    print "=========================================="
    print "========== Second pass (import) =========="
    print "=========================================="
    print "= cmd:", " ".join(cmd)
    out, err = proc.communicate()
    print out
    if err:
        print "=== stderr: ==="
        print err
    result = eval(open("out2.py").read())
    
    if result != expected:
        print "Configuration from old options differs from the python one"
        retcode = 1
        
except RuntimeError, x:
    print x
    retcode = 1

sys.exit(retcode)