#!/usr/bin/env bash

# ``prep-target`` handles the preparations for installing and configuring
# the "target" configuration of DevStack.


# Keep track of the devstack directory
GRENADE_DIR=$(cd $(dirname "$0") && pwd)

# Import common functions
source $GRENADE_DIR/functions

# Determine what system we are running on.  This provides ``os_VENDOR``,
# ``os_RELEASE``, ``os_UPDATE``, ``os_PACKAGE``, ``os_CODENAME``
# and ``DISTRO``
GetDistro

# Source params
source $GRENADE_DIR/grenaderc

# For debugging
set -o xtrace


# System Preparation
# ==================

# perform cleanup to ensure a clean starting environment
##add a config opt to still do this?
#rm -rf $TARGET_DEVSTACK_DIR

# Get DevStack if it doesn't exist
if [[ ! -d $TARGET_DEVSTACK_DIR ]]; then
    git_clone $TARGET_DEVSTACK_REPO $TARGET_DEVSTACK_DIR $TARGET_DEVSTACK_BRANCH
fi

# Load up a copy of the downloaded images if not present
if [[ -d $BASE_RELEASE_DIR/images ]]; then
    rsync -a $BASE_RELEASE_DIR/images $TARGET_DEVSTACK_DIR/files
fi

# Set up target localrc

# if localrc exists and localrc.orig does not exist, save localrc  to localrc.orig
if [[ -r $TARGET_DEVSTACK_DIR/localrc && ! -r $TARGET_DEVSTACK_DIR/localrc.orig ]]; then
    mv $TARGET_DEVSTACK_DIR/localrc $TARGET_DEVSTACK_DIR/localrc.orig
fi

# put devstack.localrc.target in place as localrc
sed -e "
    s|\@TARGET_RELEASE_DIR\@|$TARGET_RELEASE_DIR|
    s|\@DATA_DIR@|$DATA_DIR|
" $GRENADE_DIR/devstack.localrc.target >$TARGET_DEVSTACK_DIR/localrc

# if localrc.orig exists, append it to localrc
if [[ -r $TARGET_DEVSTACK_DIR/localrc.orig ]]; then
    echo "#vvvvvvvvvv devstack-vm-gate.sh localrc vvvvvvvvvv" >>$TARGET_DEVSTACK_DIR/localrc
    cat $TARGET_DEVSTACK_DIR/localrc.orig >>$TARGET_DEVSTACK_DIR/localrc
fi

# if devstack.localrc exists append it to locarc
if [[ -r $GRENADE_DIR/devstack.localrc ]]; then
    echo "#vvvvvvvvvv devstack.localrc vvvvvvvvvv" >>$TARGET_DEVSTACK_DIR/localrc
    cat $GRENADE_DIR/devstack.localrc >>$TARGET_DEVSTACK_DIR/localrc
fi


# Set up Screen
# =============

# Get target config
source $TARGET_DEVSTACK_DIR/stackrc

# Create a new named screen to run processes in
screen -d -m -S $SCREEN_NAME -t shell -s /bin/bash
sleep 1
# Set a reasonable statusbar
SCREEN_HARDSTATUS=${SCREEN_HARDSTATUS:-'%{= .} %-Lw%{= .}%> %n%f %t*%{= .}%+Lw%< %-=%{g}(%{d}%H/%l%{g})'}
screen -r $SCREEN_NAME -X hardstatus alwayslastline "$SCREEN_HARDSTATUS"

# Prep the service check bits
init_service_check


# Set up Logging
# ==============

# Set up logging for ``stack.sh``
# Set ``LOGFILE`` to turn on logging
# Append '.xxxxxxxx' to the given name to maintain history
# where 'xxxxxxxx' is a representation of the date the file was created
TIMESTAMP_FORMAT=${TIMESTAMP_FORMAT:-"%F-%H%M%S"}
if [[ -n "$LOGFILE" || -n "$SCREEN_LOGDIR" ]]; then
    LOGDAYS=${LOGDAYS:-7}
    CURRENT_LOG_TIME=$(date "+$TIMESTAMP_FORMAT")
fi

if [[ -n "$LOGFILE" ]]; then
    # First clean up old log files.  Use the user-specified ``LOGFILE``
    # as the template to search for, appending '.*' to match the date
    # we added on earlier runs.
    LOGDIR=$(dirname "$LOGFILE")
    LOGNAME=$(basename "$LOGFILE")
    mkdir -p $LOGDIR
    find $LOGDIR -maxdepth 1 -name $LOGNAME.\* -mtime +$LOGDAYS -exec rm {} \;
    LOGFILE=$LOGFILE.${CURRENT_LOG_TIME}
    SUMFILE=$LOGFILE.${CURRENT_LOG_TIME}.summary
fi

if [[ -n "$SCREEN_LOGDIR" ]]; then
    mkdir -p $SCREEN_LOGDIR
fi