/**
* CreateDataElement Handler - Create ABAP DataElement
*
* Uses AdtClient.createDataElement from @mcp-abap-adt/adt-clients.
* Low-level handler: single method call.
*/
import { AdtClient } from '@mcp-abap-adt/adt-clients';
import type { HandlerContext } from '../../../lib/handlers/interfaces';
import {
type AxiosResponse,
restoreSessionInConnection,
return_error,
return_response,
} from '../../../lib/utils';
export const TOOL_DEFINITION = {
name: 'CreateDataElementLow',
description:
'[low-level] Create a new ABAP data element. - use CreateDataElement (high-level) for full workflow with validation, lock, update, check, unlock, and activate.',
inputSchema: {
type: 'object',
properties: {
data_element_name: {
type: 'string',
description:
'DataElement name (e.g., Z_TEST_PROGRAM). Must follow SAP naming conventions.',
},
description: {
type: 'string',
description: 'DataElement description.',
},
package_name: {
type: 'string',
description: 'Package name (e.g., ZOK_LOCAL, $TMP for local objects).',
},
transport_request: {
type: 'string',
description:
'Transport request number (e.g., E19K905635). Required for transportable packages.',
},
data_type: {
type: 'string',
description:
"Data type (e.g., CHAR, NUMC) or domain name when type_kind is 'E' or 'domain'.",
},
type_kind: {
type: 'string',
description:
"Type kind: 'E' for domain-based, 'P' for predefined type, etc.",
},
type_name: {
type: 'string',
description:
"Type name: domain name (when type_kind is 'domain'), data element name (when type_kind is 'refToDictionaryType'), or class name (when type_kind is 'refToClifType')",
},
length: {
type: 'number',
description:
'Data type length (for predefinedAbapType or refToPredefinedAbapType)',
},
decimals: {
type: 'number',
description:
'Decimal places (for predefinedAbapType or refToPredefinedAbapType)',
},
session_id: {
type: 'string',
description:
'Session ID from GetSession. If not provided, a new session will be created.',
},
session_state: {
type: 'object',
description:
'Session state from GetSession (cookies, csrf_token, cookie_store). Required if session_id is provided.',
properties: {
cookies: { type: 'string' },
csrf_token: { type: 'string' },
cookie_store: { type: 'object' },
},
},
},
required: ['data_element_name', 'description', 'package_name'],
},
} as const;
interface CreateDataElementArgs {
data_element_name: string;
description: string;
package_name: string;
transport_request?: string;
data_type?: string;
type_kind?: string;
type_name?: string;
length?: number;
decimals?: number;
session_id?: string;
session_state?: {
cookies?: string;
csrf_token?: string;
cookie_store?: Record<string, string>;
};
}
/**
* Main handler for CreateDataElement MCP tool
*
* Uses AdtClient.createDataElement - low-level single method call
*/
export async function handleCreateDataElement(
context: HandlerContext,
args: CreateDataElementArgs,
) {
const { connection, logger } = context;
try {
const {
data_element_name,
description,
package_name,
transport_request,
data_type,
type_kind,
type_name,
length,
decimals,
session_id,
session_state,
} = args as CreateDataElementArgs;
// Validation
if (!data_element_name || !description || !package_name) {
return return_error(
new Error(
'data_element_name, description, and package_name are required',
),
);
}
const client = new AdtClient(connection);
// Restore session state if provided
if (session_id && session_state) {
await restoreSessionInConnection(connection, session_id, session_state);
} else {
// Ensure connection is established
}
const dataElementName = data_element_name.toUpperCase();
logger?.info(`Starting data element creation: ${dataElementName}`);
try {
// Determine typeKind based on type_kind parameter
// Supports both short form ('E', 'P') and full form ('domain', 'predefinedAbapType')
const typeKindMap: Record<
string,
| 'domain'
| 'predefinedAbapType'
| 'refToPredefinedAbapType'
| 'refToDictionaryType'
| 'refToClifType'
> = {
// Short forms
E: 'domain',
P: 'predefinedAbapType',
R: 'refToPredefinedAbapType',
D: 'refToDictionaryType',
C: 'refToClifType',
// Full forms
domain: 'domain',
predefinedAbapType: 'predefinedAbapType',
refToPredefinedAbapType: 'refToPredefinedAbapType',
refToDictionaryType: 'refToDictionaryType',
refToClifType: 'refToClifType',
};
const rawTypeKind = type_kind || 'E';
const typeKind = typeKindMap[rawTypeKind] || 'domain';
// Create data element
const createConfig: any = {
dataElementName,
description,
packageName: package_name,
typeKind,
dataType: data_type,
typeName: type_name,
length: length,
decimals: decimals,
transportRequest: transport_request,
};
const createState = await client.getDataElement().create(createConfig);
const createResult = createState.createResult;
if (!createResult) {
logger?.error(
`Create did not return a response for data element ${dataElementName}`,
);
throw new Error(
`Create did not return a response for data element ${dataElementName}`,
);
}
// Get updated session state after create
logger?.info(`✅ CreateDataElement completed: ${dataElementName}`);
return return_response({
data: JSON.stringify(
{
success: true,
data_element_name: dataElementName,
description,
package_name: package_name,
transport_request: transport_request || null,
session_id: session_id || null,
session_state: null, // Session state management is now handled by auth-broker,
message: `DataElement ${dataElementName} created successfully. Use LockDataElement and UpdateDataElement to add source code, then UnlockDataElement and ActivateObject.`,
},
null,
2,
),
} as AxiosResponse);
} catch (error: any) {
logger?.error(
`Error creating data element ${dataElementName}: ${error?.message || error}`,
);
// Parse error message
let errorMessage = `Failed to create data element: ${error.message || String(error)}`;
if (error.response?.status === 409) {
errorMessage = `DataElement ${dataElementName} already exists.`;
} else if (
error.response?.data &&
typeof error.response.data === 'string'
) {
try {
const { XMLParser } = require('fast-xml-parser');
const parser = new XMLParser({
ignoreAttributes: false,
attributeNamePrefix: '@_',
});
const errorData = parser.parse(error.response.data);
const errorMsg =
errorData['exc:exception']?.message?.['#text'] ||
errorData['exc:exception']?.message;
if (errorMsg) {
errorMessage = `SAP Error: ${errorMsg}`;
}
} catch (_parseError) {
// Ignore parse errors
}
}
return return_error(new Error(errorMessage));
}
} catch (error: any) {
return return_error(error);
}
}
