#!/bin/bash
# Based on https://github.com/akkartik/mu1/blob/master/relayout
set -e
if [[ $# -eq 0 && `git diff HEAD |wc -l` -gt 0 ]]
then
  echo "Uncommitted changes"
  exit
fi
# Phase 1
#? index=0
#? ls [0-9]* |sort -n |
#?   while read file
#?   do
#?     while [[ $file != `printf "%04d" $index`* ]]
#?     do
#?       echo
#?       index=$(($index+1))
#?     done
#?     echo $file |sed 's/^....-//'
#?     index=$(($index+1))
#?   done > .layout
root() {
  echo $1 |sed 's/^[0-9]*-//'
}
# Phase 2
index=0
cat $1 |
  while read file
  do
    echo $index $file
    if [ ! -z $file ]
    then
      file=$(ls |grep ".-$file\$")
      newfile=$(printf "%04d-%s" $index `root $file`)
      echo "=> $newfile"
      if [[ $newfile != $file ]]
      then
        echo git mv $file $newfile
        git mv $file $newfile
      fi
    fi
    index=$(($index+1))
  done