#!/bin/bash
# syncdropbox -- Synchronize a set of files or a specified folder with
# Dropbox. Accomplished by copying the folder into ~/Dropbox or the set of
# files into the sync folder in Dropbox, then launching Dropbox.app as
# needed 

name="syncdropbox"
dropbox="$HOME/Dropbox"
sourcedir=""
targetdir="sync"		# Target folder on Dropbox for individual files

# Check starting arguments

if [ $# -eq 0 ] ; then
  echo "Usage: $0 [-d source-folder] {file, file, file}" >&2 ; exit 1
fi 

if [ "$1" = "-d" ] ; then
  sourcedir="$2"
  shift; shift
fi

# Validity checks

if [ ! -z "$sourcedir" -a $# -ne 0 ] ; then
  echo "$name: you can't specify both a directory and specific files." >&2 ; exit 1
fi

if [ ! -z "$sourcedir" ] ; then
  if [ ! -d "$sourcedir" ] ; then
    echo "$name: please specify a source directory with -d" >&2 ; exit 1
  fi
fi

###### MAIN BLOCK

if [ ! -z "$sourcedir" ] ; then
 if [ -f "$dropbox/$sourcedir" -o -d "$dropbox/$sourcedir" ] ; then
    echo "$name: specified source directory $sourcedir already exists in $dropbox" >&2 ; exit 1
  fi

  echo "Copying contents of $sourcedir to $dropbox..."
  cp -a "$sourcedir" $dropbox		# -a does a recursive copy, preserving owner info &c
else
  # No source directory, so we've been given individual files
  if [ ! -d "$dropbox/$targetdir" ] ; then
    mkdir "$dropbox/$targetdir"
    if [ $? -ne 0 ] ; then
      echo "$name: Error encountered during mkdir $dropbox/$targetdir" >&2 ; exit 1
    fi
  fi
    
  # Ready! Let's copy the specified files

 cp -p -v $@ "$dropbox/$targetdir"
fi

# Now let's launch the Dropbox app to let it do the actual sync, if needed
exec startdropbox -s