#!/usr/bin/env python

import glob
import os
import sys
import subprocess
from glob import glob
import shutil

#TODO: Delete the old files to support removing a man page

def cmd_exists(cmd):
    return subprocess.call("type " + cmd, shell=True, 
        stdout=subprocess.PIPE, stderr=subprocess.PIPE) == 0

if not cmd_exists("pod2rst"): 
    print "ERROR, %s requires pod2rst to continue!" %(os.path.basename(__file__))
    sys.exit(1)

# the location relativate to xcat-core where the man pages will go
MANPAGE_DEST="./docs/source/guides/admin-guides/references/man"

#
# add the following to delete the generate files before creating them
# essentially this allows us to remove man pages and they will be 
# removed in the generation
print "Cleaning up the generated man pages in %s" %(MANPAGE_DEST)
allfiles = glob("%s*/*.rst" %(MANPAGE_DEST))
for d in allfiles: 
    # Skip over the index.rst file 
    if not "index.rst" in d: 
        print "Removing file %s" %(d)
        os.remove(d)

# List the xCAT component directory which contain pod pages
COMPONENTS = ['xCAT-SoftLayer', 'xCAT-test', 'xCAT-client', 'xCAT-vlan']

for component in COMPONENTS: 
    for root,dirs,files in os.walk("%s" %(component)):

        for file in files:
            # only interested in .pod files 
            if file.endswith(".pod"):
                pod_input = os.path.join(root,file)

                filename = os.path.basename(pod_input)
                # get the man version (1,3,5,8,etc)
                man_ver = filename.split('.')[1]
                # title is needed to pass to pod2rst
                title = filename.split('.')[0]

                DESTINATION = "%s%s" %(MANPAGE_DEST, man_ver)
                try:
                    os.stat(DESTINATION)
                except:
                    # Create the directory if it does not exist
                    os.mkdir(DESTINATION)

                outputFile = filename.replace("pod", "rst")
                rst_output = "%s/%s" %(DESTINATION, outputFile)

                # generate the pod2rst command
                cmd = "pod2rst --infile=%s --outfile=%s --title=%s.%s" %(pod_input, rst_output, title, man_ver)
                print cmd 
                os.system(cmd)