working out the worker/execution interface

packs/core/actions/download_packs.sh

@@ -0,0 +1,86 @@
+#!/bin/bash
+# Download Packs Action - API Wrapper
+# Thin wrapper around POST /api/v1/packs/download
+
+set -e
+set -o pipefail
+
+# Read JSON parameters from stdin
+INPUT=$(cat)
+
+# Parse parameters using jq
+PACKS=$(echo "$INPUT" | jq -c '.packs // []')
+DESTINATION_DIR=$(echo "$INPUT" | jq -r '.destination_dir // ""')
+REGISTRY_URL=$(echo "$INPUT" | jq -r '.registry_url // "https://registry.attune.io/index.json"')
+REF_SPEC=$(echo "$INPUT" | jq -r '.ref_spec // ""')
+TIMEOUT=$(echo "$INPUT" | jq -r '.timeout // 300')
+VERIFY_SSL=$(echo "$INPUT" | jq -r '.verify_ssl // true')
+API_URL=$(echo "$INPUT" | jq -r '.api_url // "http://localhost:8080"')
+API_TOKEN=$(echo "$INPUT" | jq -r '.api_token // ""')
+
+# Validate required parameters
+if [[ -z "$DESTINATION_DIR" ]] || [[ "$DESTINATION_DIR" == "null" ]]; then
+    echo '{"downloaded_packs":[],"failed_packs":[{"source":"input","error":"destination_dir is required"}],"total_count":0,"success_count":0,"failure_count":1}' >&1
+    exit 1
+fi
+
+# Build request body
+REQUEST_BODY=$(jq -n \
+    --argjson packs "$PACKS" \
+    --arg destination_dir "$DESTINATION_DIR" \
+    --arg registry_url "$REGISTRY_URL" \
+    --argjson timeout "$TIMEOUT" \
+    --argjson verify_ssl "$([[ "$VERIFY_SSL" == "true" ]] && echo true || echo false)" \
+    '{
+        packs: $packs,
+        destination_dir: $destination_dir,
+        registry_url: $registry_url,
+        timeout: $timeout,
+        verify_ssl: $verify_ssl
+    }' | jq --arg ref_spec "$REF_SPEC" 'if $ref_spec != "" and $ref_spec != "null" then .ref_spec = $ref_spec else . end')
+
+# Make API call
+CURL_ARGS=(
+    -X POST
+    -H "Content-Type: application/json"
+    -H "Accept: application/json"
+    -d "$REQUEST_BODY"
+    -s
+    -w "\n%{http_code}"
+    --max-time $((TIMEOUT + 30))
+    --connect-timeout 10
+)
+
+if [[ -n "$API_TOKEN" ]] && [[ "$API_TOKEN" != "null" ]]; then
+    CURL_ARGS+=(-H "Authorization: Bearer ${API_TOKEN}")
+fi
+
+RESPONSE=$(curl "${CURL_ARGS[@]}" "${API_URL}/api/v1/packs/download" 2>/dev/null || echo -e "\n000")
+
+# Extract status code (last line)
+HTTP_CODE=$(echo "$RESPONSE" | tail -n 1)
+BODY=$(echo "$RESPONSE" | head -n -1)
+
+# Check HTTP status
+if [[ "$HTTP_CODE" -ge 200 ]] && [[ "$HTTP_CODE" -lt 300 ]]; then
+    # Extract data field from API response
+    echo "$BODY" | jq -r '.data // .'
+    exit 0
+else
+    # Error response
+    ERROR_MSG=$(echo "$BODY" | jq -r '.error // .message // "API request failed"' 2>/dev/null || echo "API request failed")
+
+    cat <<EOF
+{
+  "downloaded_packs": [],
+  "failed_packs": [{
+    "source": "api",
+    "error": "API call failed (HTTP $HTTP_CODE): $ERROR_MSG"
+  }],
+  "total_count": 0,
+  "success_count": 0,
+  "failure_count": 1
+}
+EOF
+    exit 1
+fi