feat: route ssh to run a specifc shell script

ssh_router.sh

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+MODE="$1" # 'rw' or 'readonly'
+CONTAINER="$SSH_ORIGINAL_COMMAND"
+IMAGE="analytics-backend-workspace" # change to match your setup
+TMUX_SESSION="analytics-backend"
+DEV_USER="devuser"
+VIEW_USER="viewer"
+
+# Function to start the container if not running
+start_container_if_needed() {
+  if ! podman container exists "$CONTAINER"; then
+    echo "🚀 Creating container $CONTAINER..."
+    podman run -dit \
+      --name "$CONTAINER" \
+      --user "$DEV_USER" \
+      --hostname devbox \
+      --label auto-cleanup=true \
+      "$IMAGE" bash
+  elif ! podman inspect -f '{{.State.Running}}' "$CONTAINER" | grep -q true; then
+    echo "⚡ Starting existing container $CONTAINER..."
+    podman start "$CONTAINER"
+  fi
+}
+
+# After devuser exits...
+check_devuser_attached() {
+  # Get list of clients
+  client_users=$(podman exec "$CONTAINER" tmux list-clients -t "$TMUX_SESSION" -F "#{client_user}" 2>/dev/null)
+
+  if echo "$client_users" | grep -q "$USER"; then
+    echo "💡 devuser still attached — container stays running"
+    return 0
+  else
+    echo "⚠️  devuser has exited — stopping container"
+    podman stop "$CONTAINER"
+    return 1
+  fi
+}
+
+# === Main ===
+
+case "$MODE" in
+rw)
+  start_container_if_needed
+
+  # Run tmux session inside the container
+  if ! podman exec -it --user "$USER" "$CONTAINER" tmux has-session -t "$TMUX_SESSION" 2>/dev/null; then
+    podman exec -it --user "$USER" "$CONTAINER" tmux new-session -s "$TMUX_SESSION"
+  else
+    podman exec -it --user "$USER" "$CONTAINER" tmux attach -t "$TMUX_SESSION"
+  fi
+
+  check_devuser_attached
+  ;;
+ro)
+  if ! podman container exists "$CONTAINER" || ! podman inspect -f '{{.State.Running}}' "$CONTAINER" | grep -q true; then
+    echo "❌ Container '$CONTAINER' not running."
+    exit 1
+  fi
+  exec podman exec -it --user "$VIEW_USER" "$CONTAINER" tmux attach -r -t "$TMUX_SESSION"
+  ;;
+*)
+  echo "❌ Invalid access mode: $MODE"
+  exit 1
+  ;;
+esac