devinstall

#!/usr/bin/env python
# This "installer" is not a true installer. It simply sets up symbolic links
# to the 2 subdirectories, i.e. for the question/type and question/behaviour
# directories. It is intended for use by developers because
# it results in changes to the source code being immediately "live", because
# the live code is symbolically linked to the developer code.
# It needs to be run only on the initial cloning of the repository.

from __future__ import print_function
import os
import shutil
import subprocess

def printFailMessage():
    print("This script failed to set up the necessary symbolic links.")
    print("You will need to manually make the following symbolic links to ")
    print("directories in this module:")
    print("<moodlehome>/question/type/coderunner -> coderunner")
    print("<moodlehome>/question/behaviour/adaptive_adapted_for_coderunner -> adaptive_adapted_for_coderunner")


def main():
    cwd = os.getcwd()
    if "moodle/local/CodeRunner" not in cwd:
        print("WARNING: CodeRunner appears not to have been cloned into moodle/local")
        print ("as recommended.")
        printFailMessage()
    else:
        try:
            searchString = "/moodle/local/CodeRunner"
            pos = cwd.index(searchString)
            basedir = cwd[0:pos]
            installdir = cwd[0:pos + len(searchString)]
            dirs = [("type/coderunner", "moodle/question/type/coderunner"),
                ("behaviour/adaptive_adapted_for_coderunner", "moodle/question/behaviour/adaptive_adapted_for_coderunner")]

            for (src,dest) in dirs:
                newdir = "{0}/{1}".format(basedir, dest)
                if os.path.islink(newdir):  # Symbolic link?
                    print("Deleting symbolic link {}".format(newdir))
                    os.unlink(newdir)
                elif os.path.isdir(newdir):
                    print("Removing existing directory {}".format(newdir))
                    shutil.rmtree(newdir) 
                print("Creating new symbolic link {}".format(newdir))                  
                if subprocess.call("ln -s {0}/{1} {2}".format(installdir, src, newdir), shell=True) != 0:
                    raise OSError("Failed to create symbolic link")
            print("Install complete.")

        except Exception as e:
            print("Exception when making symbolic links: " + str(e))
            printFailMessage()

main()