#!/bin/bash

INSTALL_DIR="${PWD}"

# Check system requirements: Git, Node & NPM
EXC_GIT="$(/usr/bin/which git)"
if [ -z "$EXC_GIT" ]; then
  echo "[ERROR] Missing required system dependency 'git'." >&2
  echo "Please install using \"apt install git\"" >&2
  exit 1
fi

EXC_DOCKER="$(/usr/bin/which docker)"
if [ -z "$EXC_DOCKER" ]; then
  echo "[ERROR] Missing required system dependency 'docker'." >&2
  echo "Please install using the official documentation." >&2
  exit 1
fi

GCC_CONFIG_DIR="${INSTALL_DIR}/google-cloud"
FCM_ACCOUNT_JSON="${GCC_CONFIG_DIR}/firebase-adminsdk.json"

if [ ! -d "$GCC_CONFIG_DIR" ]; then
  echo "[ERROR] Missing required google cloud key files. Please prepare directory 'google-cloud' in install directory." >&2
  exit 1
fi

if [ ! -f "$FCM_ACCOUNT_JSON" ]; then
  echo "[ERROR] Missing required Firebase Admin SDK key file. Please provide this file as 'google-cloud/firebase-adminsdk.json' in order to install." >&2
  exit 1
fi

# exit on error exit codes
set -e

TMPFOLDER="/tmp/hbbq/monitoring/$(date +'%Y%m%d%H%M%S')"

echo "[INSTALL] Cloning entire project into temp folder $TMPFOLDER"
mkdir -p "$TMPFOLDER"
git clone https://gogs.hostbbq.com/hostbbq/hostbbq-monitoring.git "$TMPFOLDER"

cd "$TMPFOLDER"

echo "[INSTALL] Cloning submodules ..."
git submodule init
git submodule update

if [[ -f "$INSTALL_DIR/.env" ]]; then
  export $(cat "$INSTALL_DIR/.env" | xargs)
else 
  export $(cat "$TMPFOLDER/server/.env.default" | xargs)
fi

echo "Checking data volume directory $INSTALL_DIR/$DB_DIR"
if [[ ! -d "$INSTALL_DIR/$DB_DIR" ]]; then
  mkdir "$INSTALL_DIR/$DB_DIR"
fi

if [ -f "$INSTALL_DIR/.env" ]; then
  cp "$INSTALL_DIR/.env" ./
else 
  cp "$TMPFOLDER/server/.env.default" ./.env
fi
cp -r "$GCC_CONFIG_DIR" ./server/

docker compose -f server.docker-compose.yml build

echo "[INSTALL] Installing server application"
if [ -d "$INSTALL_DIR/dist" ]; then
  rm -rf "$INSTALL_DIR/dist"
fi
if [ ! -f "$INSTALL_DIR/.env" ]; then
  cp -v "$TMPFOLDER/server/.env.default" "$INSTALL_DIR/.env"
fi
echo "[INSTALL] Creating docker-compose.yml"
. "$INSTALL_DIR/.env"
envsubst < "$TMPFOLDER/server.docker-compose.yml" > "$INSTALL_DIR/docker-compose.yml"

cd "$INSTALL_DIR"

DOCKER_NETWORK_NAME=hostbbq-monitoring-vlan
if ! docker network inspect ${DOCKER_NETWORK_NAME} > /dev/null 2>&1; then
  if [[ "${COMMAND}" == "up" ]]; then
    echo "⭐ Creating network '${DOCKER_NETWORK_NAME}'..."
    docker network create --subnet=172.20.5.0/24 "${DOCKER_NETWORK_NAME}"
  fi
else
  if [[ "${COMMAND}" == "up" ]]; then
    echo "✔ Network '${DOCKER_NETWORK_NAME}' exists."
  fi
fi

COMPOSE_PROJECT_NAME="monitoring-server" \
docker compose up -d --force-recreate

echo "[CLEANUP] Removing temp folder $TMPFOLDER"
rm -rf "$TMPFOLDER"

echo "[SUCCESS] HostBBQ Monitoring Server installed and activated successfully"