#!/usr/bin/env bash

run_directory=$(dirname $(readlink -f "$0"))
source "$run_directory/variables.conf"

for dir in $sync_directory/*; do
  git -C $dir rev-parse 2>/dev/null >/dev/null
  if [ "$?" -ne 0 ]; then
    echo "$dir: not a Git repo"
    continue
  fi
  if [ -f $dir/.disabled ]; then
    echo "$dir update is disabled."
    continue
  fi
  git -C $dir fetch 2>/dev/null >/dev/null
  UPSTREAM=${1:-'@{u}'}
  LOCAL=$(git -C $dir rev-parse @)
  REMOTE=$(git -C $dir rev-parse "$UPSTREAM")
  BASE=$(git -C $dir merge-base @ "$UPSTREAM")
  if [ $LOCAL = $REMOTE ]; then
      echo "$dir: up-to-date"
  elif [ $LOCAL = $BASE ]; then
      echo "pulling $dir"
      git -C $dir pull 2>/dev/null >/dev/null
      if [ -e $dir/install.sh ]; then
        echo "Running $dir's install script..."
        $dir/install.sh
      fi
  elif [ $REMOTE = $BASE ]; then
      echo "WARNING: $dir is ahead of remote!"
  else
      echo "WARNING: $dir and remote have diverged!"
  fi
done

exit 0