{
  "version": "2.2.0",
  "name": "Create Forum Post",
  "description": "Create a new post (reply) in a forum thread",
  "trigger": {
    "type": "http",
    "method": "POST",
    "path": "/forum/threads/:threadId/posts"
  },
  "nodes": [
    {
      "id": "validate_tenant",
      "type": "operation",
      "op": "validate",
      "input": "{{ $context.tenantId }}",
      "validator": "required"
    },
    {
      "id": "validate_input",
      "type": "operation",
      "op": "validate",
      "input": "{{ $json }}",
      "rules": {
        "content": "required|string|minLength:3|maxLength:5000"
      }
    },
    {
      "id": "check_thread_exists",
      "type": "operation",
      "op": "database_read",
      "entity": "ForumThread",
      "params": {
        "filter": {
          "id": "{{ $json.threadId }}",
          "tenantId": "{{ $context.tenantId }}"
        }
      }
    },
    {
      "id": "check_thread_locked",
      "type": "operation",
      "op": "condition",
      "condition": "{{ $steps.check_thread_exists.output.isLocked !== true }}"
    },
    {
      "id": "create_post",
      "type": "operation",
      "op": "database_create",
      "entity": "ForumPost",
      "data": {
        "tenantId": "{{ $context.tenantId }}",
        "threadId": "{{ $json.threadId }}",
        "authorId": "{{ $context.user.id }}",
        "content": "{{ $json.content }}",
        "editedAt": null,
        "isDeleted": false,
        "createdAt": "{{ new Date().toISOString() }}"
      }
    },
    {
      "id": "increment_thread_count",
      "type": "operation",
      "op": "database_update",
      "entity": "ForumThread",
      "params": {
        "filter": {
          "id": "{{ $json.threadId }}"
        },
        "data": {
          "postCount": "{{ $steps.check_thread_exists.output.postCount + 1 }}",
          "updatedAt": "{{ new Date().toISOString() }}"
        }
      }
    },
    {
      "id": "emit_event",
      "type": "action",
      "action": "emit_event",
      "event": "post_created",
      "channel": "{{ 'forum:thread:' + $json.threadId }}",
      "data": {
        "postId": "{{ $steps.create_post.output.id }}",
        "threadId": "{{ $json.threadId }}",
        "authorId": "{{ $context.user.id }}"
      }
    },
    {
      "id": "return_success",
      "type": "action",
      "action": "http_response",
      "status": 201,
      "body": "{{ $steps.create_post.output }}"
    }
  ]
}