#!/bin/sh -e

for arg in "$@"
do
    case "$arg" in
         sh) _ext=".sh" ;;
        ksh) _ext=".ksh" ;;
        txt) _ext=".txt" ;;
        log) _ext=".log" ;;
         rm) _rm=1 ;;
         rmlast) _rmlast=1 ;;
         ls) _ls=1 ;;
         -[0-9]?) _last="$arg" ;;
         mv) _mv=1 ;;
         mvlast) _mvlast=1 ;;
          *) break; ;;
    esac
    shift;
done

upload_list() {
    ssh sdk@codevoid.de \
        "cd /home/www/htdocs/ptrace/paste/ \
            && ls -1tr"
}

if [ -n "$_ls" ]
then
    upload_list \
        | while read f
          do 
              echo "https://ptrace.org/$(echo "$f" | sed 's/ /%20/g') ($f)"
          done
    exit 0
fi

if [ -n "$_last" ]
then
    upload_list \
        | tail $_last \
        | while read f
          do 
              echo "https://ptrace.org/$(echo "$f" | sed 's/ /%20/g') ($f)"
          done
    exit 0
fi

if [ -n "$_mv" ]
then
    ssh sdk@codevoid.de \
        "cd /home/www/htdocs/ptrace/paste/ \
            && mv -v \"$1\" \"$2\""
    exit 0
fi

if [ -n "$_mvlast" ]
then
    lastfile="$(upload_list | tail -1)"
    ssh sdk@codevoid.de \
        "cd /home/www/htdocs/ptrace/paste/ \
            && mv -v \"$lastfile\" \"$2\""
    exit 0
fi

if [ -n "$_rm" ]
then
    for file in "$@"
    do  
        ssh sdk@codevoid.de \
            "cd /home/www/htdocs/ptrace/paste/ \
                && rm -v \"$(basename "$file")\"" \
            || true
    done
    exit 0
fi

if [ -n "$_rmlast" ]
then
    lastfile="$(upload_list | tail -1)"
    ssh sdk@codevoid.de \
        "cd /home/www/htdocs/ptrace/paste/ \
            && rm -v \"$lastfile\"" \
        || true
    exit 0
fi

echo $#

if [ $# -gt 0 ]
then
    for file in "$@"
    do
        [ ! -f "$file" ] \
            && echo "file not found: $file" \
            && exit 1
        # make sure the file is least owner rw and group r
        # the sticky bit in the destiation folder will assign user+group
        chmod u+rw,g+r "$file"
        scp "$file" "sdk@codevoid.de:/home/www/htdocs/ptrace/paste/${file}${_ext}"
        echo "https://ptrace.org/$(basename "$file")${_ext}" \
            | sed 's/ /%20/g' \
            | xclip -f -r
        echo
    done
fi

if [ $# -eq 0 ]
then
    echo "usage: upload [command] [<files>]"
    echo "  commands:"
    echo "    rm <files>                - remove files"
    echo "    rmlast                    - remove last upload"
    echo "    ls                        - list files"
    echo "   -0..N                      - list N last uploads"
    echo "    mv <oldname> <newname>    - rename file"
    echo "  <files>                     - upload files"
    exit 2
fi