#!/usr/bin/env bash

set -euo pipefail

# init_supabase.sh
# Purpose:
# - Deploy Supabase in Kubernetes and connect it to the CNPG Postgres cluster.

# Initialize SCRIPT_DIR
SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)

# Load environment and config via prole_cfg.sh
# shellcheck disable=SC1090
source "$SCRIPT_DIR/prole_cfg.sh"

ACTION=${1:-}

CNPG_CLUSTER_NAME=${CNPG_CLUSTER_NAME:-prole-db}

# Support both PROLE_HOME/k8s and sibling k8s directory
if [[ -d "$SCRIPT_DIR/../k8s/prole" ]]; then
  SUPABASE_MANIFEST_DIR="$SCRIPT_DIR/../k8s/prole"
elif [[ -n "${PROLE_HOME:-}" && -d "$PROLE_HOME/k8s/prole" ]]; then
  SUPABASE_MANIFEST_DIR="$PROLE_HOME/k8s/prole"
else
  SUPABASE_MANIFEST_DIR="$SCRIPT_DIR/../k8s/prole"
fi

SUPABASE_FILES=(
  "$SUPABASE_MANIFEST_DIR/supabase-configmap.yaml"
  "$SUPABASE_MANIFEST_DIR/supabase-deployment.yaml"
  "$SUPABASE_MANIFEST_DIR/supabase-service.yaml"
)

usage() {
  cat <<EOF
Usage: $0 [start|stop|restart|status]

Actions:
  start     Apply Supabase manifests
  stop      Delete Supabase manifests
  restart   Re-apply Supabase manifests
  status    Show Supabase resources
EOF
  exit 1
}

ensure_tools() {
  for t in kubectl; do
    command -v "$t" >/dev/null || { echo "Missing required tool: $t" >&2; exit 1; }
  done
}

ensure_namespace() {
  if ! kubectl get namespace "$NAMESPACE" >/dev/null 2>&1; then
    echo "Creating namespace '$NAMESPACE' ..."
    kubectl create namespace "$NAMESPACE" >/dev/null 2>&1 || true
  fi
}

ensure_prereqs() {
  ensure_namespace
  if ! kubectl get cluster "$CNPG_CLUSTER_NAME" -n "$NAMESPACE" >/dev/null 2>&1; then
    echo "ERROR: CNPG cluster '$CNPG_CLUSTER_NAME' not found in namespace '$NAMESPACE'." >&2
    exit 1
  fi
  if ! kubectl get secret prole-db-user -n "$NAMESPACE" >/dev/null 2>&1; then
    echo "ERROR: Secret 'prole-db-user' not found in namespace '$NAMESPACE'." >&2
    exit 1
  fi
}

apply_manifests() {
  for f in "${SUPABASE_FILES[@]}"; do
    if [[ -f "$f" ]]; then
      kubectl apply -n "$NAMESPACE" -f "$f"
    else
      echo "ERROR: Missing manifest: $f" >&2
      exit 1
    fi
  done
}

delete_manifests() {
  for f in "${SUPABASE_FILES[@]}"; do
    if [[ -f "$f" ]]; then
      kubectl delete -n "$NAMESPACE" -f "$f" --ignore-not-found
    fi
  done
}

status() {
  ensure_tools
  echo "Supabase status in namespace '$NAMESPACE':"
  kubectl get deploy supabase -n "$NAMESPACE" || true
  kubectl get svc supabase -n "$NAMESPACE" || true
}

case "$ACTION" in
  start)
    ensure_tools
    ensure_prereqs
    echo "Applying Supabase manifests in namespace '$NAMESPACE'..."
    apply_manifests
    ;;
  stop)
    ensure_tools
    echo "Deleting Supabase manifests from namespace '$NAMESPACE'..."
    delete_manifests
    ;;
  restart)
    ensure_tools
    ensure_prereqs
    echo "Re-applying Supabase manifests in namespace '$NAMESPACE'..."
    apply_manifests
    ;;
  status)
    status
    ;;
  *)
    usage
    ;;
esac