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

HOST="${BTCPRICE_DEPLOY_HOST:-citadel}"
APP_DIR="${BTCPRICE_DEPLOY_DIR:-/home/pmp/apps/btcprice}"
IMAGE_NAME="${BTCPRICE_IMAGE_NAME:-btcprice:latest}"
PLATFORM="${BTCPRICE_PLATFORM:-}"
COMPOSE_FILE="docker-compose.citadel.yml"
ENV_FILE=".env.citadel"
FILES=("$COMPOSE_FILE" "$ENV_FILE")

if [[ -z "$PLATFORM" ]]; then
  remote_arch="$(ssh "$HOST" uname -m)"
  case "$remote_arch" in
  x86_64 | amd64) PLATFORM="linux/amd64" ;;
  aarch64 | arm64) PLATFORM="linux/arm64" ;;
  *)
    echo "Unsupported target architecture: $remote_arch" >&2
    echo "Set BTCPRICE_PLATFORM manually, e.g. BTCPRICE_PLATFORM=linux/amd64" >&2
    exit 1
    ;;
  esac
fi

for file in "${FILES[@]}"; do
  if [[ ! -f "$file" ]]; then
    echo "Missing required file: $file" >&2
    exit 1
  fi
done

echo "Building $IMAGE_NAME locally for $PLATFORM..."
docker build --platform "$PLATFORM" -t "$IMAGE_NAME" .

echo "Preparing $APP_DIR on $HOST..."
ssh "$HOST" "mkdir -p '$APP_DIR'"

echo "Copying $COMPOSE_FILE and $ENV_FILE to $HOST:$APP_DIR..."
scp "$COMPOSE_FILE" "$HOST:$APP_DIR/docker-compose.yml"
scp "$ENV_FILE" "$HOST:$APP_DIR/.env"

echo "Copying Docker image $IMAGE_NAME to $HOST..."
docker save "$IMAGE_NAME" | ssh "$HOST" docker load

echo "Starting docker compose on $HOST in $APP_DIR..."
ssh "$HOST" "cd '$APP_DIR' && docker compose up -d --no-build"