#!/usr/bin/env bash
# Regression test: etc/init_kong.sh should not leak a RETURN trap that later
# triggers `tmp: unbound variable` under `set -u`.

set -euo pipefail

SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
PROLE_HOME=$(cd "$SCRIPT_DIR/../.." && pwd)
SOURCE_ETC_DIR="$PROLE_HOME/etc"
SOURCE_ETC_LIB_SHELL_DIR="$PROLE_HOME/etc/lib/shell"

TMP_DIR=$(mktemp -d)
trap 'rm -rf "$TMP_DIR"' EXIT

WORK_DIR="$TMP_DIR/work"
BIN_DIR="$TMP_DIR/bin"
mkdir -p "$WORK_DIR/etc/lib/shell" "$WORK_DIR/conf" "$BIN_DIR"

cp "$SOURCE_ETC_DIR/init_kong.sh" "$WORK_DIR/etc/init_kong.sh"
cp "$SOURCE_ETC_DIR/common_core_lib.sh" "$WORK_DIR/etc/common_core_lib.sh"
cp "$SOURCE_ETC_LIB_SHELL_DIR/common_core_lib.sh" "$WORK_DIR/etc/lib/shell/common_core_lib.sh"
cp "$SOURCE_ETC_DIR/prole_cfg.sh" "$WORK_DIR/etc/prole_cfg.sh"
chmod +x "$WORK_DIR/etc/init_kong.sh"

cat <<EOF > "$WORK_DIR/conf/prole.cfg"
[globals]
prole.home = $WORK_DIR
prole.mode = k3s
NAMESPACE = knoe-db-a0001
SERVICE_NAMESPACE = knoe-system
EOF

export KUBECTL_LOG="$TMP_DIR/kubectl.log"

cat <<'EOF' > "$BIN_DIR/kubectl"
#!/usr/bin/env bash
set -euo pipefail

args=("$@")
printf '%s\n' "${args[*]}" >> "${KUBECTL_LOG}"

# Skip global options like --request-timeout=...
while [[ "${1:-}" == --* ]]; do
  shift
done

sub="${1:-}"
case "$sub" in
  config)
    case "${2:-}" in
      current-context)
        printf '%s' "default"
        exit 0
        ;;
      use-context|get-contexts)
        exit 0
        ;;
    esac
    exit 0
    ;;
  get|create|apply|rollout|wait|exec|delete|describe|logs|patch)
    # Always succeed; this test focuses on avoiding trap/unbound-variable issues.
    if [[ "$sub" == "create" && "${2:-}" == "configmap" ]]; then
      # init_kong.sh expects YAML on stdout when using --dry-run=client -o yaml.
      cat <<YAML
apiVersion: v1
kind: ConfigMap
metadata:
  name: dummy
YAML
    fi
    exit 0
    ;;
  *)
    exit 0
    ;;
esac
EOF
chmod +x "$BIN_DIR/kubectl"

export PATH="$BIN_DIR:$PATH"

export PROLE_HOME="$WORK_DIR"
export PROLE_CONF="$WORK_DIR/conf"
export PROLE_MODE="k3s"

if "$WORK_DIR/etc/init_kong.sh" -n "knoe-system" update >"$TMP_DIR/stdout" 2>"$TMP_DIR/stderr"; then
  :
else
  echo "FAILURE: init_kong.sh update exited non-zero" >&2
  cat "$TMP_DIR/stderr" >&2
  exit 1
fi

if grep -q "unbound variable" "$TMP_DIR/stderr"; then
  echo "FAILURE: stderr contains an unbound-variable error" >&2
  cat "$TMP_DIR/stderr" >&2
  exit 1
fi

if grep -q "tmp: unbound variable" "$TMP_DIR/stderr"; then
  echo "FAILURE: stderr contains 'tmp: unbound variable'" >&2
  cat "$TMP_DIR/stderr" >&2
  exit 1
fi

echo "SUCCESS"