#! /bin/sh -

CPOLIS_REPO_URL="https://git.streifling.com/api/v1/repos/jason/cpolis/releases"
EXTRACTION_DIR=$HOME
CPOLIS_DIR=$EXTRACTION_DIR/cpolis
TAILWINDCSS_REPO_URL=https://api.github.com/repos/tailwindlabs/tailwindcss/releases/latest
TMP_DIR=/tmp
BIN_DIR=/usr/local/bin
SYSTEMD_DIR=/etc/systemd/system

check_dependency() {
    if ! which $1 >/dev/null 2>&1; then
        echo "$1 needs to be installed" >&2
        exit 1
    fi
}

if ! groups | grep -E 'root|wheel|sudo' >/dev/null; then
    echo "You need administrative privileges for this script" >&2
    exit 1
fi

check_dependency curl
check_dependency go
check_dependency jq
check_dependency tar
check_dependency xargs

echo -e '\nDownloading cpolis...' >&2
rm -fr $CPOLIS_DIR/*
latest_release=$(curl -s $CPOLIS_REPO_URL | jq -r '.[0].tag_name')
curl -Lo $TMP_DIR/cpolis.tar.gz https://git.streifling.com/jason/cpolis/archive/$latest_release.tar.gz
tar -xzf $TMP_DIR/cpolis.tar.gz -C $EXTRACTION_DIR
rm $TMP_DIR/cpolis.tar.gz

echo -e '\nDownloading TailwindCSS...' >&2
curl -s $TAILWINDCSS_REPO_URL |
    grep -F browser_download_url |
    grep -F linux-x64 |
    cut -d'"' -f4 |
    xargs -r curl -Lo $CPOLIS_DIR/tailwindcss
chmod +x $CPOLIS_DIR/tailwindcss
$CPOLIS_DIR/tailwindcss -i $CPOLIS_DIR/web/static/css/input.css -o $CPOLIS_DIR/web/static/css/style.css

echo -e 'Building cpolis...' >&2
go build -o $TMP_DIR/cpolis $CPOLIS_DIR/cmd/main.go

echo -e 'Setting system files up...' >&2
sudo mv $TMP_DIR/cpolis $BIN_DIR/cpolis
sudo chown root:root $BIN_DIR/cpolis
chmod +x $BIN_DIR/cpolis

sudo mv $CPOLIS_DIR/cpolis.service $SYSTEMD_DIR
sudo chown root:root $SYSTEMD_DIR/cpolis.service
sudo systemctl daemon-reload
sudo systemctl is-active --quiet cpolis.service && sudo systemctl restart cpolis.service