working out the worker/execution interface

packs/core/actions/sleep.sh

@@ -1,34 +1,80 @@
-#!/bin/bash
+#!/bin/sh
 # Sleep Action - Core Pack
 # Pauses execution for a specified duration
+#
+# This script uses pure POSIX shell without external dependencies like jq or yq.
+# It reads parameters in DOTENV format from stdin until the delimiter.
 
 set -e
 
-# Parse parameters from environment variables
-SLEEP_SECONDS="${ATTUNE_ACTION_SECONDS:-1}"
-MESSAGE="${ATTUNE_ACTION_MESSAGE:-}"
+# Initialize variables
+seconds="1"
+message=""
 
-# Validate seconds parameter
-if ! [[ "$SLEEP_SECONDS" =~ ^[0-9]+$ ]]; then
-    echo "ERROR: seconds must be a positive integer" >&2
-    exit 1
-fi
+# Read DOTENV-formatted parameters from stdin until delimiter
+while IFS= read -r line; do
+    # Check for parameter delimiter
+    case "$line" in
+        *"---ATTUNE_PARAMS_END---"*)
+            break
+            ;;
+        seconds=*)
+            # Extract value after seconds=
+            seconds="${line#seconds=}"
+            # Remove quotes if present (both single and double)
+            case "$seconds" in
+                \"*\")
+                    seconds="${seconds#\"}"
+                    seconds="${seconds%\"}"
+                    ;;
+                \'*\')
+                    seconds="${seconds#\'}"
+                    seconds="${seconds%\'}"
+                    ;;
+            esac
+            ;;
+        message=*)
+            # Extract value after message=
+            message="${line#message=}"
+            # Remove quotes if present
+            case "$message" in
+                \"*\")
+                    message="${message#\"}"
+                    message="${message%\"}"
+                    ;;
+                \'*\')
+                    message="${message#\'}"
+                    message="${message%\'}"
+                    ;;
+            esac
+            ;;
+    esac
+done
 
-if [ "$SLEEP_SECONDS" -lt 0 ] || [ "$SLEEP_SECONDS" -gt 3600 ]; then
+# Validate seconds parameter (must be numeric)
+case "$seconds" in
+    ''|*[!0-9]*)
+        echo "ERROR: seconds must be a positive integer" >&2
+        exit 1
+        ;;
+esac
+
+# Validate seconds range (0-3600)
+if [ "$seconds" -lt 0 ] || [ "$seconds" -gt 3600 ]; then
     echo "ERROR: seconds must be between 0 and 3600" >&2
     exit 1
 fi
 
 # Display message if provided
-if [ -n "$MESSAGE" ]; then
-    echo "$MESSAGE"
+if [ -n "$message" ]; then
+    echo "$message"
 fi
 
 # Sleep for the specified duration
-sleep "$SLEEP_SECONDS"
+sleep "$seconds"
 
 # Output result
-echo "Slept for $SLEEP_SECONDS seconds"
+echo "Slept for $seconds seconds"
 
 # Exit successfully
 exit 0