Make deploy defaults host-agnostic and support Enter auth submit

deploy/scripts/install_service.sh

@@ -1,24 +1,51 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-REPO_ROOT="${1:-/home/bestmidi/chgrid}"
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="${1:-$(cd "$SCRIPT_DIR/../.." && pwd)}"
 UNIT_NAME="${2:-chat-grid.service}"
-SRC_UNIT="$REPO_ROOT/deploy/systemd/$UNIT_NAME"
 DST_UNIT="/etc/systemd/system/$UNIT_NAME"
 DROPIN_FILE="/etc/systemd/system/$UNIT_NAME.d/env.conf"
+OWNER_USER="$(stat -c '%U' "$REPO_ROOT")"
+OWNER_GROUP="$(stat -c '%G' "$REPO_ROOT")"
+SERVER_DIR="$REPO_ROOT/server"
+RUNTIME_DIR="$SERVER_DIR/runtime"
+RUN_SERVER="$SERVER_DIR/run_server.sh"
+SERVER_LOG="$RUNTIME_DIR/server.log"
 
-if [[ ! -f "$SRC_UNIT" ]]; then
-  echo "error: unit file not found: $SRC_UNIT" >&2
+if [[ ! -x "$RUN_SERVER" ]]; then
+  echo "error: executable run script not found: $RUN_SERVER" >&2
   exit 1
 fi
 
-sudo cp "$SRC_UNIT" "$DST_UNIT"
+sudo tee "$DST_UNIT" >/dev/null <<EOF
+[Unit]
+Description=Chat Grid signaling server
+After=network.target
+
+[Service]
+Type=simple
+User=$OWNER_USER
+Group=$OWNER_GROUP
+WorkingDirectory=$SERVER_DIR
+Environment=PATH=$SERVER_DIR/.venv/bin:/usr/bin:/bin
+ExecStartPre=/usr/bin/mkdir -p $RUNTIME_DIR
+ExecStart=$RUN_SERVER
+StandardOutput=append:$SERVER_LOG
+StandardError=append:$SERVER_LOG
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
 if [[ -f "$DROPIN_FILE" ]]; then
   sudo rm -f "$DROPIN_FILE"
 fi
-sudo install -d -m 0755 -o bestmidi -g bestmidi "$REPO_ROOT/server/runtime"
-sudo touch "$REPO_ROOT/server/runtime/server.log"
-sudo chown bestmidi:bestmidi "$REPO_ROOT/server/runtime/server.log"
+sudo install -d -m 0755 -o "$OWNER_USER" -g "$OWNER_GROUP" "$RUNTIME_DIR"
+sudo touch "$SERVER_LOG"
+sudo chown "$OWNER_USER:$OWNER_GROUP" "$SERVER_LOG"
 sudo systemctl daemon-reload
 sudo systemctl enable --now "$UNIT_NAME"
 sudo systemctl restart "$UNIT_NAME"