from datetime import date
import glob
import os

## Set version number.
version = '1.0'
## Get the current date.
now = date.today()
## Format it.
today = now.strftime("%m-%d-%y")
## Set request type. May be improved by making it interactive later.
request = 'Parts'
## Get to the parts request directory.
os.chdir('S:\\Parts Requisitions\\Electrical Requests\\2013')
## Make a list of the filenames that start with a number and end with
## ".pdf".
filelist = glob.glob('[0-99999]*.pdf')
## Sort the list so that the newest request filename is the first index.
filelist.sort(reverse=True)
## Pull out the last requests filename.
lastreq = filelist[0]
## Parse out the different parts of the file name.
templist = lastreq.split()
## Pull out the portion of the file name that contains the number.
lastnum = templist[0]
## Change the string into a integer.
lastnum = int(lastnum)
## Increment the number by 1.
newnum = lastnum + 1
## Concatenate the parts of the new request file name into a single
## string
filename = str(newnum) + ' ' + request + ' ' + today + ".pdf"
## Open a writable file with the proper file name.
placeholderfile = open(filename, 'w')
## Place a summary of how the file was created in the file as plain
## text for anyone who wants to know more.
placeholderfile.write('This is a placeholder file for the next parts\n'
                      'request number in line created by running\n'
                      'a python program named neewpartreqnumgen.py\n'
                      'version ' + version + ' located in\n'
                      "'S:\Parts Requisitions\Electrical Requests\' \n"
                      'created by Casey Hancock.\n')
## close the file
placeholderfile.close()
## print out the file name so people know which request number is
## theirs.
print(filename)