#!/usr/bin/env bash
# ══════════════════════════════════════════════════════════════════
#  Greendale Media Centre — Export to Unraid
#
#  Usage:
#    chmod +x export-to-unraid.sh
#    ./export-to-unraid.sh [unraid-user@unraid-ip] [destination-path]
#
#  Examples:
#    ./export-to-unraid.sh root@192.168.86.10
#    ./export-to-unraid.sh root@192.168.86.10 /mnt/user/appdata/greendale
#
#  What it does:
#    1. Builds the Docker image locally and saves it as a tarball
#    2. rsyncs the project files (minus secrets & cache) to Unraid
#    3. Copies the image tarball to Unraid
#    4. Loads the image on Unraid via SSH
#    Leaves your .env on Unraid untouched if it already exists.
# ══════════════════════════════════════════════════════════════════

set -euo pipefail

REMOTE="${1:-}"
DEST="${2:-/mnt/user/appdata/greendale}"
IMAGE_NAME="arr-summary-arr-summary"
TARBALL="/tmp/greendale-image.tar"

if [[ -z "$REMOTE" ]]; then
  echo "Usage: $0 <user@unraid-ip> [destination-path]"
  echo "Example: $0 root@192.168.86.10 /mnt/user/appdata/greendale"
  exit 1
fi

echo "▶ Building Docker image..."
docker compose build

echo "▶ Saving image to tarball (this may take a moment)..."
docker save "$IMAGE_NAME" -o "$TARBALL"

echo "▶ Syncing project files to $REMOTE:$DEST ..."
rsync -avz --progress \
  --exclude='.env' \
  --exclude='__pycache__' \
  --exclude='*.pyc' \
  --exclude='.git' \
  --exclude='nginx' \
  --exclude='export-to-unraid.sh' \
  --exclude="$(basename "$TARBALL")" \
  ./ "$REMOTE:$DEST/"

echo "▶ Copying Docker image to Unraid..."
scp "$TARBALL" "$REMOTE:/tmp/greendale-image.tar"

echo "▶ Loading image on Unraid..."
ssh "$REMOTE" "docker load -i /tmp/greendale-image.tar && rm /tmp/greendale-image.tar"

echo "▶ Checking if .env exists on Unraid..."
if ssh "$REMOTE" "test -f $DEST/.env"; then
  echo "  ✓ .env already exists on Unraid — leaving it untouched."
else
  echo "  ⚠ No .env found. Copying .env.example as a starting point..."
  ssh "$REMOTE" "cp $DEST/.env.example $DEST/.env"
  echo "  → Edit $DEST/.env on Unraid before starting the container!"
fi

echo ""
echo "══════════════════════════════════════════════════════════"
echo "  ✅  Export complete!"
echo ""
echo "  On Unraid, to start:"
echo "    cd $DEST"
echo "    nano .env          # set LOGIN_PASSWORD, SECRET_KEY, etc."
echo "    docker compose up -d"
echo ""
echo "  Or add via Unraid's Docker UI:"
echo "    Repository:   arr-summary-arr-summary (already loaded)"
echo "    Port mapping: HOST_PORT (default 5055) → 5000"
echo "══════════════════════════════════════════════════════════"

rm -f "$TARBALL"