{
  "version": "2.2.0",
  "name": "Fetch User Statistics",
  "description": "Calculate and fetch user statistics (posts, comments, activity, etc)",
  "trigger": {
    "type": "http",
    "method": "GET",
    "path": "/stats"
  },
  "nodes": [
    {
      "id": "validate_context",
      "type": "operation",
      "op": "validate",
      "input": "{{ $context.user.id }}",
      "validator": "required"
    },
    {
      "id": "count_forum_posts",
      "type": "operation",
      "op": "database_count",
      "entity": "ForumPost",
      "params": {
        "filter": {
          "authorId": "{{ $context.user.id }}",
          "tenantId": "{{ $context.tenantId }}",
          "isDeleted": false
        }
      }
    },
    {
      "id": "count_forum_threads",
      "type": "operation",
      "op": "database_count",
      "entity": "ForumThread",
      "params": {
        "filter": {
          "authorId": "{{ $context.user.id }}",
          "tenantId": "{{ $context.tenantId }}"
        }
      }
    },
    {
      "id": "count_media_uploads",
      "type": "operation",
      "op": "database_count",
      "entity": "MediaAsset",
      "params": {
        "filter": {
          "uploadedBy": "{{ $context.user.id }}",
          "tenantId": "{{ $context.tenantId }}"
        }
      }
    },
    {
      "id": "calculate_engagement",
      "type": "operation",
      "op": "database_aggregate",
      "entity": "ForumPost",
      "params": {
        "filter": {
          "authorId": "{{ $context.user.id }}",
          "tenantId": "{{ $context.tenantId }}",
          "isDeleted": false
        },
        "aggregations": {
          "totalLikes": "sum(likes)",
          "avgScore": "avg(score)"
        }
      }
    },
    {
      "id": "format_response",
      "type": "operation",
      "op": "transform_data",
      "output": {
        "forumPosts": "{{ $steps.count_forum_posts.output }}",
        "forumThreads": "{{ $steps.count_forum_threads.output }}",
        "mediaUploads": "{{ $steps.count_media_uploads.output }}",
        "engagement": {
          "totalLikes": "{{ $steps.calculate_engagement.output.totalLikes || 0 }}",
          "averageScore": "{{ $steps.calculate_engagement.output.avgScore || 0 }}"
        }
      }
    },
    {
      "id": "return_success",
      "type": "action",
      "action": "http_response",
      "status": 200,
      "body": "{{ $steps.format_response.output }}"
    }
  ]
}