#!/bin/bash
#
# Android backup
#

# Basic parameters
BASENAME="`basename $0`"
NAME="$1"

# Check
if [ -z "$NAME" ]; then
  echo "$BASENAME: missing phone name"
  exit 1
fi

# Additional parameters
DATE="`date +%Y%m%d`"
BASE="/storage/emulated/0"
STORAGE="/var/backups/remote/$NAME.`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/