#!/bin/bash
#
# Android backup
#

# Parameters
date="`date +%Y%m%d`"
base="/storage/emulated/0"
storage="/var/backups/remote/celular.`facter domain`/"
previous="`sudo ls -1 $storage | tac | head -n 1`"

# Work folder
cd ~/load || exit 1
mkdir -p $date && cd $date

# Check
if [ -d "$storage/$date" ]; then
  echo "backup for $date already exists"
  exit 1
fi

# If you have a previous backup you might want to use it with hardlinks
if [ -e "$storage/$previous/files" ]; then
  sudo cp -alf $storage/$previous/files files
fi

# Ensure we have a files folder
mkdir -p files

# Contacts. Export also to a .vcf directly from the contact app
adb-export.sh           -e    content://com.android.contacts/contacts
adb shell content query --uri content://com.android.contacts/contacts > contacts.rows

# Configurations
adb backup -all

# Files: full copy
#adb pull $base files/

# Remove multimedia cache from backup
#rm -rf files/Music

# Files: full basic copy
#adb shell ls -1 $base | grep -v ^Music | while read file; do
#  adb pull $base/$file files/
#done

# Files: incremental basic copy
for file in `adb shell ls -1 $base | grep -v '^Music'`; do
  adb-sync --delete --reverse $base/$file files/
done

# Move backup to storage
cd .. && sudo mv $date $storage/