#!/bin/sh
#
# j -- journal something-or-other.
#

CURRENT=~/.journal/$(date +%Y-%m)

if [ ! -d ~/.journal/ ]; then
    if ! mkdir ~/.journal
    then
        echo "Creation of ~/.journal failed, exiting."
        exit 2
    fi
fi

case $1 in

-n)
   ${EDITOR:-vi} /tmp/jtask.$$
   TEXT=$(cat /tmp/jtask.$$)
   rm /tmp/jtask.$$
;;

-e)
   ${EDITOR:-vi} $CURRENT
;;

-l)
   ${PAGER:-cat} $CURRENT
;;

-m)
   ${PAGER:-cat} ~/.journal/$(date -d"-1 month" +%Y-%m)
;;

-*)
   echo "Usage: $(basename $0) [options | new entry]"
   echo "       -n      enter new entry in editor"
   echo "       -e      edit this month's journal"
   echo "       -l      list this month's journal"
   echo "       -m      list last month's journal"
   echo "       -h      this help"
   echo
   echo Calling $(basename $0) without options reads new entry from STDIN
   exit 1
;;

'')
   TEXT=$(cat)
;;

*)
   TEXT=$*
;;

esac

if [ ! -z "$TEXT" ]
then
    if ! grep --quiet ^$(date +%d) $CURRENT; 
    then
        # first entry today
        echo >> $CURRENT
        echo $(date +%d) >> $CURRENT
    fi
    echo "   - $TEXT" >> $CURRENT
fi