#!/bin/bash

fslist="android-ndk-r10e android-sdk-linux android-studio eclipse java user jdk1.8.0_74"
user=`whoami`
group=$user
dir=$PWD

function up() {
    mkdir -p bin
    sudo mount -t ramfs -o nouser none bin
    sudo chmod 776 bin
    sudo chown $user:$group bin
    for dir in $fslist
    do
        mkdir -p bin/$dir && chown $user:$group bin/$dir
        mkdir -p bin/rom/$dir
        mkdir -p diff/$dir && chown $user:$group diff/$dir
        sudo mount -t squashfs -o ro,nouser files/$dir.squashfs bin/rom/$dir
        #sudo mount -t overlayfs -o lowerdir=bin/rom/$dir,upperdir=diff/$dir,nouser none bin/$dir
        sudo mount -t aufs -o nouser,br:diff/$dir:bin/rom/$dir none bin/$dir
        #unionfs-fuse diff/mnt/disk1-pool=RW:/mnt/disk3-pool=RW /mnt/union-pool
    done
}

function down() {
    ./bin/android-sdk-linux/platform-tools/adb kill-server
    for dir in $fslist
    do
        sudo umount bin/$dir
        sudo umount bin/rom/$dir
    done
    sudo umount bin
}

case $1 in
make-links)
    ln -s $dir/bin/user/AndroidStudioProjects ~/AndroidStudioProjects
    ln -s $dir/bin/user/.AndroidStudio1.5     ~/.AndroidStudio1.5
    ln -s $dir/bin/user/.android              ~/.android
    ln -s $dir/bin/user/.gradle               ~/.gradle
    ln -s $dir/bin/user/.p2                   ~/.p2
    ln -s $dir/bin/user/.tooling              ~/.tooling
    ;;
prepare)
    sudo apt-get install aufs-tools
    sudo apt-get install lib32stdc++6 lib32z1 lib32z1-dev
    ;;
mount)
    up
    ;;
umount)
    down
    ;;
repack)
    echo todo - recreate squashfs files into output dir
    ;;
*)
    echo 'usage: mount-fs mount|umount'
    ;;
esac