#!/usr/bin/env python
#
# Title:      PGBlitz (Reference Title File)
# Maintainer: Admin9705
# URL:        https://pgblitz.com - http://github.pgblitz.com
# GNU:        General Public License v3.0
#
# Additions:  clinton-hall - https://github.com/Prinz23
################################################################################
import os
import sys
import shutil

# NZBGet Exit Codes
NZBGET_POSTPROCESS_PARCHECK = 92
NZBGET_POSTPROCESS_SUCCESS = 93
NZBGET_POSTPROCESS_ERROR = 94
NZBGET_POSTPROCESS_NONE = 95

if not os.environ.has_key('NZBOP_SCRIPTDIR'):
    print "This script can only be called from NZBGet (11.0 or later)."
    sys.exit(0)

if os.environ['NZBOP_VERSION'][0:5] < '11.0':
    print "[ERROR] NZBGet Version %s is not supported. Please update NZBGet." % (
        str(os.environ['NZBOP_VERSION']))
    sys.exit(0)

print "Script triggered from NZBGet Version %s." % (
    str(os.environ['NZBOP_VERSION']))
status = 0
if os.environ.has_key('NZBPP_TOTALSTATUS'):
    if not os.environ['NZBPP_TOTALSTATUS'] == 'SUCCESS':
        print "[ERROR] Download failed with status %s." % (
            os.environ['NZBPP_STATUS'])
        status = 1

else:
    # Check par status
    if os.environ['NZBPP_PARSTATUS'] == '1' or os.environ['NZBPP_PARSTATUS'] == '4':
        print "[ERROR] Par-repair failed, setting status \"failed\"."
        status = 1

    # Check unpack status
    if os.environ['NZBPP_UNPACKSTATUS'] == '1':
        print "[ERROR] Unpack failed, setting status \"failed\"."
        status = 1

    if os.environ['NZBPP_UNPACKSTATUS'] == '0' and os.environ['NZBPP_PARSTATUS'] == '0':
        # Unpack was skipped due to nzb-file properties or due to errors during par-check

        if os.environ['NZBPP_HEALTH'] < 1000:
            print "[ERROR] Download health is compromised and Par-check/repair disabled or no .par2 files found. Setting status \"failed\"."
            print "[ERROR] Please check your Par-check/repair settings for future downloads."
            status = 1

        else:
            print "[ERROR] Par-check/repair disabled or no .par2 files found, and Unpack not required. Health is ok so handle as though download successful."
            print "[WARNING] Please check your Par-check/repair settings for future downloads."

# Check if destination directory exists (important for reprocessing of history items)
if not os.path.isdir(os.environ['NZBPP_DIRECTORY']):
    print "[ERROR] Nothing to post-process: destination directory", os.environ['NZBPP_DIRECTORY'], "doesn't exist. Setting status \"failed\"."
    status = 1

# All checks done, now launching the script.
if status == 1:
    sys.exit(NZBGET_POSTPROCESS_NONE)


def removeEmptyFolders(path, removeRoot=True):
    # Function to remove empty folders
    if not os.path.isdir(path):
        return

    # remove empty subfolders
    print "[INFO] Checking for empty folders in:%s" % path
    files = os.listdir(path)
    if len(files):
        for f in files:
            fullpath = os.path.join(path, f)
            if os.path.isdir(fullpath):
                removeEmptyFolders(fullpath)

    # if folder empty, delete it
    files = os.listdir(path)
    if len(files) == 0 and removeRoot:
        print "[INFO] Removing empty folder:%s" % path
        os.rmdir(path)


directory = os.path.normpath(os.environ['NZBPP_DIRECTORY'])
if os.environ['NZBPO_DESTINATIONDIRECTORY'] and os.path.isdir(os.environ['NZBPO_DESTINATIONDIRECTORY']):
    destination = os.environ['NZBPO_DESTINATIONDIRECTORY']
    if os.environ['NZBPO_APPENDCATEGORIES'] == 'yes':
        destination = os.path.join(destination, os.environ['NZBPP_CATEGORY'])
else:
    destination = directory
print "Flattening directory: %s" % (directory)
for dirpath, dirnames, filenames in os.walk(directory):
    for fileName in filenames:
        outputFile = os.path.join(dirpath, fileName)
        if dirpath == directory:
            continue
        target = os.path.join(destination, fileName)
        try:
            shutil.move(outputFile, target)
        except:
            print "[ERROR] Could not flatten %s" % outputFile
removeEmptyFolders(directory)  # Cleanup empty directories
sys.exit(NZBGET_POSTPROCESS_SUCCESS)