import optparse
import sys
import subprocess

from wizard import deploy

def prettify(loc):
    return loc.replace("/afs/athena.mit.edu/contrib/scripts", "~scripts")

def indent(text, indent):
    # There should be a built-in
    return "\n".join([" " * indent + x for x in text.split("\n")])

def main(argv, global_options):
    usage = """usage: %prog info [ARGS] DIR

Prints information about an autoinstalled directory,
including its history and current version."""
    parser = optparse.OptionParser(usage)
    parser.add_option("--reverse", dest="reverse", action="store_true",
            default=False, help="Print entries in chronological order (default is reverse)")
    options, args = parser.parse_args(argv)
    if len(args) > 1:
        parser.error("too many arguments")
    elif not args:
        parser.error("must specify directory")
    d = deploy.Deployment.fromDir(args[0])
    d.getLog() # force the log to be loaded, to pre-empt errors
    proc = False
    # This is prime candidate for refactoring. This code pipes
    # stdout to less, so that you get scrolling and stuff.
    if sys.stdout.isatty():
        proc = subprocess.Popen("less", stdin=subprocess.PIPE)
        sys.stdout = proc.stdin
    try:
        if options.reverse: munge = lambda x: x
        else: munge = reversed
        for entry in munge(d.getLog()):
            print "%s %s" % (entry.version.application.name, entry.version.version)
            print "User: %s" % entry.user
            print "Date: %s" % entry.datetime.strftime("%a %b %0d %H:%M:%S %Y %z")
            print
            info = "Unknown"
            if isinstance(entry.source, deploy.TarballInstall):
                info = "Installed with tarball at:\n%s" % \
                    prettify(entry.source.location)
            print indent(info, 4)
            print
    finally:
        if proc:
            proc.stdin.close()
            proc.wait()