#!/bin/bash
# copyright 2021 by moshix
# GPL3 license
# many, many thanks to https://www.shellcheck.net/#
# v 0.01 Make ftp work
# v 0.11 put sensitive variables outside script
# v 0.12 list .vimrc changes 
# v 0.20 display something if job was not executed
# v 0.21 remove listing before getting out script
# v 0.30 test for set variables before execution
# v 0.40 beautify a bit
# v 0.50 set passive mode for folks behind NAT on ipv4
# v 0.60 user /tmp for temporary files...
# v 1.00 beginning of MVS 3.8 TK4- version 
# v 1.10 tail tk4 printer file
# v 1.30 fixed nasty bash-related bug with spaces after EOF
# v 1.40 fix for MVS 3.8 tk4

VERSION="1.40"

# Variables used (best to supply before submit execution for security reasons 
#user=
#pwd=
#host=
arg2=$2
mode=""
#echo "before executiong of ifs: $user $pwd $host"

check_tk4 () {
if [[ "$arg2" == "tk4" ]]; then
    mode="tk4"
fi
}
check_vars () {
# test if variables set before running submit and if not, abort
if [ -n "$user" ]; then 
   :
else
  echo "No user defined. export user and retry"
fi

if [ -n "$pwd" ]; then                                                            
   : 
else                                                                                      
  echo "No password  defined. export pwd and retry"                               
fi  

if [ -n "$host" ]; then                                                            
   : 
else                                                                                      
  echo "No remote host defined. export host and retry"                               
fi  
}

check_tk4   # check if we are talking to MVS 3.8 TK4-
check_vars  # check vars

# now let's check if a job was supplied
if [ -n "$1" ]&& [[ "$mode" != "tk4" ]]; then
    job=$1
    output=${job%.*}
    echo "Job not executed!! Check connection, userid,pwd and IP and retry..." >  $output.listing
    #echo "user: $user   pwd:******   job:$job    output:$output.listing"
    ftp -n $host <<**
    quote USER $user
    quote PASS $pwd
    passive
    quote site filetype=jes
    quote site jesjobname=* jesstatus=all jesowner=*
    get $job /tmp/$output.listing
    bye
    END
**
    cat /tmp/$output.listing #show the listing
    rm /tmp/$output.listing #remove it so we don't pollute directory
fi

# let's check for TK4 case
if [ -n "$1" ] && [[ "$mode" == "tk4" ]]; then                                  
    job=$1
    ftp -n $host 2300 <<**
    $user 
    $pwd 
    asci
    put $job AAINTRDR
    quit
**
    echo "file submitted to MVS 3.8 TK4-"
else                                                                            
    echo "Something is wrong with tk4 supplied input.."
fi    

#  .vimrc changes:
#  nnoremap <F10>   :split new <CR>:resize 40<CR>                                  
#  nnoremap <f11>   :% ! submit                                                    
#  nnoremap <f8>    :set autoread | au CursorHold * checktime | call feedkeys("lh") 
# .vimrc: set autoread