#!/usr/bin/env bash
set -euo pipefail

BUILD_HOST="${BUILD_HOST:-107}"
DEPLOY_HOST="${DEPLOY_HOST:-111}"
BUILD_PATH="${BUILD_PATH:-/opt/vpn-proxy-build}"
DEPLOY_PATH="${DEPLOY_PATH:-/opt/vpn-proxy}"
IMAGE_NAME="${IMAGE_NAME:-vpn-proxy-gateway}"
GIT_REF="$(git rev-parse --short HEAD 2>/dev/null || echo manual)"
IMAGE_TAG="${IMAGE_TAG:-${GIT_REF}-$(date +%Y%m%d%H%M%S)}"
GATEWAY_IMAGE="${GATEWAY_IMAGE:-${IMAGE_NAME}:${IMAGE_TAG}}"
BASE_IMAGE="${BASE_IMAGE:-debian:bookworm-slim}"
SINGBOX_VERSION="${SINGBOX_VERSION:-1.12.13}"

echo "Build host: ${BUILD_HOST}"
echo "Deploy host: ${DEPLOY_HOST}"
echo "Image: ${GATEWAY_IMAGE}"

echo "Syncing source to ${BUILD_HOST}:${BUILD_PATH}"
ssh "${BUILD_HOST}" "mkdir -p '${BUILD_PATH}'"
rsync -az --delete \
  --exclude '.git' \
  --exclude '.vpn-proxy' \
  --exclude 'node_modules' \
  --exclude 'dist' \
  ./ "${BUILD_HOST}:${BUILD_PATH}/"

echo "Building image on ${BUILD_HOST}"
ssh "${BUILD_HOST}" \
  "cd '${BUILD_PATH}' && npm ci && npm run build && docker build --pull --build-arg BASE_IMAGE='${BASE_IMAGE}' --build-arg SINGBOX_VERSION='${SINGBOX_VERSION}' -t '${GATEWAY_IMAGE}' ."

echo "Loading image into ${DEPLOY_HOST}"
ssh "${BUILD_HOST}" "docker save '${GATEWAY_IMAGE}'" | ssh "${DEPLOY_HOST}" "docker load"

echo "Copying deploy script to ${DEPLOY_HOST}:${DEPLOY_PATH}"
ssh "${DEPLOY_HOST}" "mkdir -p '${DEPLOY_PATH}'"
rsync -az scripts/deploy-gateway.sh "${DEPLOY_HOST}:${DEPLOY_PATH}/deploy-gateway.sh"

echo "Starting gateway on ${DEPLOY_HOST}"
ssh "${DEPLOY_HOST}" \
  "cd '${DEPLOY_PATH}' && chmod +x ./deploy-gateway.sh && DEPLOY_PATH='${DEPLOY_PATH}' GATEWAY_IMAGE='${GATEWAY_IMAGE}' PULL_IMAGE=false ./deploy-gateway.sh"