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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ROOT_DIR="$(cd "$SCRIPT_DIR/../.." && pwd)"

REMOTE_HOST="${REMOTE_HOST:?REMOTE_HOST is required, example: player@shineup.me}"
TARGET_DOMAIN="${TARGET_DOMAIN:?TARGET_DOMAIN is required, example: shineup.me}"
REMOTE_SERVER_DIR="${REMOTE_SERVER_DIR:?REMOTE_SERVER_DIR is required}"
REMOTE_LOGS_DIR="${REMOTE_LOGS_DIR:-$REMOTE_SERVER_DIR/logs}"
REMOTE_DATA_DIR="${REMOTE_DATA_DIR:-$REMOTE_SERVER_DIR/data}"
REMOTE_SERVICE_NAME="${REMOTE_SERVICE_NAME:?REMOTE_SERVICE_NAME is required}"
SERVER_PORT="${SERVER_PORT:?SERVER_PORT is required}"
LOCAL_JAR="${LOCAL_JAR:-$ROOT_DIR/SHiNE-server/build/libs/shine-server.jar}"
BUILD_JAR="${BUILD_JAR:-1}"
REQUIRE_BACKUP="${REQUIRE_BACKUP:-0}"
BACKUP_DIR="${BACKUP_DIR:-$ROOT_DIR/deploy/backup/archive}"

if [[ "$REQUIRE_BACKUP" == "1" ]]; then
  if ! find "$BACKUP_DIR" -mindepth 2 -maxdepth 2 -name MANIFEST.txt -print -quit 2>/dev/null | grep -q .; then
    echo "ERROR: для production deploy сначала положите свежий бэкап в $BACKUP_DIR/<date>/MANIFEST.txt" >&2
    exit 1
  fi
fi

if [[ "$BUILD_JAR" == "1" ]]; then
  echo "==> Building server jar"
  (cd "$ROOT_DIR" && ./gradlew shadowJar)
fi

if [[ ! -f "$LOCAL_JAR" ]]; then
  echo "ERROR: локальный jar не найден: $LOCAL_JAR" >&2
  exit 1
fi

echo "==> Deploy server to $TARGET_DOMAIN ($REMOTE_HOST)"
ssh -o BatchMode=yes -o ConnectTimeout=20 "$REMOTE_HOST" "echo SSH OK" >/dev/null
ssh "$REMOTE_HOST" "sudo -n true"
ssh "$REMOTE_HOST" "java -version >/dev/null 2>&1"

TMP_DIR="$(mktemp -d)"
cleanup() {
  rm -rf "$TMP_DIR"
}
trap cleanup EXIT

cat >"$TMP_DIR/$REMOTE_SERVICE_NAME.service" <<EOF
[Unit]
Description=SHiNE Server ($TARGET_DOMAIN)
After=network.target

[Service]
Type=simple
User=player
Group=player
WorkingDirectory=$REMOTE_SERVER_DIR
ExecStart=/usr/bin/java -Dserver.port=$SERVER_PORT -jar $REMOTE_SERVER_DIR/shine-server.jar
Restart=always
RestartSec=3

[Install]
WantedBy=multi-user.target
EOF

ssh "$REMOTE_HOST" "mkdir -p '$REMOTE_SERVER_DIR' '$REMOTE_DATA_DIR' '$REMOTE_LOGS_DIR'"
rsync -az --timeout=120 "$LOCAL_JAR" "$REMOTE_HOST:$REMOTE_SERVER_DIR/shine-server.jar"
rsync -az "$TMP_DIR/$REMOTE_SERVICE_NAME.service" "$REMOTE_HOST:/tmp/$REMOTE_SERVICE_NAME.service"

ssh "$REMOTE_HOST" "set -euo pipefail; \
  sudo mv -f '/tmp/$REMOTE_SERVICE_NAME.service' '/etc/systemd/system/$REMOTE_SERVICE_NAME.service'; \
  sudo chown root:root '/etc/systemd/system/$REMOTE_SERVICE_NAME.service'; \
  sudo chown -R player:player '$REMOTE_SERVER_DIR'; \
  sudo systemctl daemon-reload; \
  sudo systemctl enable '$REMOTE_SERVICE_NAME'; \
  sudo systemctl restart '$REMOTE_SERVICE_NAME'; \
  sudo systemctl --no-pager --full status '$REMOTE_SERVICE_NAME' >/dev/null"

echo "Всё хорошо: сервер $TARGET_DOMAIN обновлён и сервис $REMOTE_SERVICE_NAME перезапущен"