Backup env config setup. Add --check flag to wild-config and wild-set.

bin/wild-config

@@ -5,7 +5,7 @@ set -o pipefail
 
 # Usage function
 usage() {
-    echo "Usage: wild-config <yaml_key_path>"
+    echo "Usage: wild-config [--check] <yaml_key_path>"
     echo ""
     echo "Read a value from \$WC_HOME/config.yaml using a YAML key path."
     echo ""
@@ -13,18 +13,25 @@ usage() {
     echo "  wild-config 'cluster.name'           # Get cluster name"
     echo "  wild-config 'apps.myapp.replicas'    # Get app replicas count"
     echo "  wild-config 'services[0].name'       # Get first service name"
+    echo "  wild-config --check 'cluster.name'   # Exit 1 if key doesn't exist"
     echo ""
     echo "Options:"
+    echo "  --check     Exit 1 if key doesn't exist (no output)"
     echo "  -h, --help  Show this help message"
 }
 
 # Parse arguments
+CHECK_MODE=false
 while [[ $# -gt 0 ]]; do
     case $1 in
         -h|--help)
             usage
             exit 0
             ;;
+        --check)
+            CHECK_MODE=true
+            shift
+            ;;
         -*)
             echo "Unknown option $1"
             usage
@@ -61,6 +68,9 @@ fi
 CONFIG_FILE="${WC_HOME}/config.yaml"
 
 if [ ! -f "${CONFIG_FILE}" ]; then
+    if [ "${CHECK_MODE}" = true ]; then
+        exit 1
+    fi
     echo "Error: config file not found at ${CONFIG_FILE}" >&2
     echo ""
     exit 0
@@ -71,9 +81,17 @@ result=$(yq eval ".${KEY_PATH}" "${CONFIG_FILE}" 2>/dev/null || echo "null")
 
 # Check if result is null (key not found)
 if [ "${result}" = "null" ]; then
+    if [ "${CHECK_MODE}" = true ]; then
+        exit 1
+    fi
     echo "Error: Key path '${KEY_PATH}' not found in ${CONFIG_FILE}" >&2
     echo ""
     exit 0
 fi
 
+# In check mode, exit 0 if key exists (don't output value)
+if [ "${CHECK_MODE}" = true ]; then
+    exit 0
+fi
+
 echo "${result}"