#!/usr/bin/env bash
set -e
set -o pipefail
set -o errtrace
shopt -s expand_aliases
[ "$(uname)" == "Darwin" ] && alias sed="gsed" || :

TFW_POSTFIX=tutorial-framework
BASEIMAGE=baseimage-${TFW_POSTFIX}
TEST=test-${TFW_POSTFIX}
FRONTEND=frontend-${TFW_POSTFIX}
LOGFILE=/tmp/bootstrap_tfw.log

run()
{
    trap 'err_cleanup; showlog' ERR
    trap cleanlog EXIT
    : > $LOGFILE

    clone_repos
    install_frontend_deps
    if [ -z "$TFWDEV" ]; then
        LATESTTAG="$(fetch_latest_tag)"
        LATESTTAG=$LATESTTAG pin_latest_baseimage
        LATESTTAG=$LATESTTAG build_latest_baseimage
        cleanup_repos
        merge_repos
    fi

    echo 
    echo "You can build & start TFW by executing the command: ${TEST}/hack/tfw.sh start"
}

showlog() { echo && echo "Error! Showing logs:" && cat $LOGFILE; }
cleanlog() { rm $LOGFILE; }
err_cleanup() { rm -rf "$BASEIMAGE" "$FRONTEND" "$TEST"; }

clone_repos()
{
    echo -n "Cloning TFW repositories... "
    echo -n "baseimage... " && git clone git@github.com:avatao-content/${BASEIMAGE}.git >> $LOGFILE 2>&1
    echo -n "frontend... " && git clone git@github.com:avatao-content/${FRONTEND}.git >> $LOGFILE 2>&1
    echo -n "test... " && git clone git@github.com:avatao-content/${TEST}.git >> $LOGFILE 2>&1
    echo "Done!"
}

install_frontend_deps()
{
    echo -n "Installing frontend dependencies... "
    cd "$FRONTEND"
    yarn install >> $LOGFILE 2>&1
    cd ..
    echo "Done!"
}

pin_latest_baseimage()
{
    echo -n "Pinning latest TFW baseimage version... "
    echo -n "which is ${LATESTTAG}... "
    sed -i "1 s/.*/&:${LATESTTAG}/" "${TEST}/solvable/Dockerfile"
    echo "Done!"
}

build_latest_baseimage()
{
    echo -n "Building baseimage at ${LATESTTAG}... "
    cd "$BASEIMAGE"
    git checkout "$LATESTTAG" >> $LOGFILE 2>&1
    cd ..
    TFWTAG=$LATESTTAG ${TEST}/hack/tfw.sh buildtfw >> $LOGFILE 2>&1
    echo "Done!"
}

fetch_latest_tag()
{
    echo -n "$(git ls-remote --tags git@github.com:avatao-content/${BASEIMAGE}.git |
               cut -f2                                                             |
               grep -oP '(?<=refs/tags/)\w+-\d{8}$'                                |
               sort -t '-' -k2                                                     |
               tail -n 1)"
}

cleanup_repos()
{
    rm -rf "${BASEIMAGE}"
    rm -rf "${TEST}/.git"
    rm -rf "${FRONTEND}/.git"
}

merge_repos()
{
    echo -n "Merging repositories... "
    NESTED_FRONTEND="${TEST}/solvable/frontend"
    rm -rf $NESTED_FRONTEND
    mv "$FRONTEND" "$NESTED_FRONTEND"
    echo "Done!"
}

run