#!/bin/bash -e
# running from a git repo
# Add cmdline options for passing to ansible
# todo add proper shift to gobble up --debug --reinstall
ARGS=""
OLD_RPI_KERN="4.9.41-v7+"
PLAYBOOK="iiab-stages.yml"
INVENTORY="ansible_hosts"
CWD=`pwd`
OS=`grep ^ID= /etc/*release|cut -d= -f2`
OS=${OS//\"/}

function version_gt() { [ "$(printf '%s\n' "$@" | sort -V | head -1)" != "$1" ]; }

export ANSIBLE_LOG_PATH="$CWD/iiab-install.log"

if [ ! -f $PLAYBOOK ]; then
    echo "IIAB Playbook not found."
    echo "Please run this command from the top level of the git repo."
    echo "Exiting."
    exit 1
fi

if [ $OS == "raspbian" ]; then
    echo "Found Raspbian"
    CURRENT_KERN=`uname -r`
    if version_gt $CURRENT_KERN $OLD_RPI_KERN ; then
    	echo "Kernel looks ok - continuing"
    else
	echo "Kernel "$OLD_RPI_KERN" is obsolete. Before running './iiab-install' you first need"
	echo "to update your system with 'apt update' then 'apt dist-upgrade' then reboot."
	echo "INSTALL INSTRUCTIONS: https://github.com/iiab/iiab/wiki/IIAB-Installation"
	exit 1
    fi
fi

if [ ! -f /etc/ansible/facts.d/local_facts.fact ]; then
    mkdir -p /etc/ansible/facts.d
fi
cp ./scripts/local_facts.fact /etc/ansible/facts.d/local_facts.fact

STAGE=""

if [ ! -f /etc/iiab/iiab.env ]; then
    mkdir -p /etc/iiab
    # ./scripts/ansible   # needs discussion
else
    OLD=`grep XSCE /etc/iiab/iiab.env | wc -l`
    if [ "$OLD" != 0 ] || [ "$1" == "--reinstall" ]; then
        echo "Found old XSCE install - re-installing from scratch"
        rm /etc/iiab/iiab.env
        # check ansible version here and force ansible upgrade if needed
    else
        source /etc/iiab/iiab.env
        if [ "$1" == "--debug" ]; then
            echo "Entering debug mode"
            sed -i -e 's/^STAGE=.*/STAGE=2/' /etc/iiab/iiab.env
        elif [ ! $STAGE == 9 ]; then
            echo "Restarting *after* STAGE $STAGE..as soon as Stage 0 completes. Stage 9 comes last."
        elif [ $STAGE == 9 ]; then
            # place keeper add read response
            # "offer 'Y' or stage number dialog box option to override"
            echo "'iiab-install' has already been completed"
            echo "use --debug to override "
            #echo "In demo mode not preventing second run"
            echo "Exiting."
            exit 1
        fi
    fi
fi

# if vars/local_vars.yml is missing, put a default one in place - First Run
if [ ! -f ./vars/local_vars.yml ]; then
    case $OS in
        OLPC | fedora)
            cp ./vars/olpc.localvars ./vars/local_vars.yml
            ;;
        centos | debian | ubuntu | raspbian)
            cp ./vars/medium.localvars ./vars/local_vars.yml
            ;;
        *)
            echo "IIAB supports raspbian, debian, ubuntu, centos, and OLPC - exiting now..."
            exit 1
            ;;
    esac
fi

echo "Running local playbooks! "
ansible -m setup -i $INVENTORY localhost --connection=local >> /dev/null
ansible-playbook -i $INVENTORY $PLAYBOOK ${ARGS} --connection=local