/**
* ValidateFunctionModule Handler - Validate ABAP function module name via ADT API
*
* Uses validateFunctionModuleName from @mcp-abap-adt/adt-clients/core/functionModule for function module-specific validation.
* Requires function group name.
*/
import { AdtClient } from '@mcp-abap-adt/adt-clients';
import type { HandlerContext } from '../../../lib/handlers/interfaces';
import {
type AxiosResponse,
parseValidationResponse,
restoreSessionInConnection,
return_error,
return_response,
} from '../../../lib/utils';
export const TOOL_DEFINITION = {
name: 'ValidateFunctionModuleLow',
description:
'[low-level] Validate an ABAP function module name before creation. Checks if the name is valid and available. Requires function group name. Can use session_id and session_state from GetSession to maintain the same session.',
inputSchema: {
type: 'object',
properties: {
function_group_name: {
type: 'string',
description: 'Function group name (e.g., Z_FUGR_TEST_0001)',
},
function_module_name: {
type: 'string',
description: 'Function module name to validate (e.g., Z_TEST_FM)',
},
description: {
type: 'string',
description: 'Optional description for validation',
},
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: ['function_group_name', 'function_module_name'],
},
} as const;
interface ValidateFunctionModuleArgs {
function_group_name: string;
function_module_name: string;
description?: string;
session_id?: string;
session_state?: {
cookies?: string;
csrf_token?: string;
cookie_store?: Record<string, string>;
};
}
/**
* Main handler for ValidateFunctionModule MCP tool
*/
export async function handleValidateFunctionModule(
context: HandlerContext,
args: ValidateFunctionModuleArgs,
) {
const { connection, logger } = context;
try {
const {
function_group_name,
function_module_name,
description,
session_id,
session_state,
} = args as ValidateFunctionModuleArgs;
if (!function_group_name || !function_module_name) {
return return_error(
new Error('function_group_name and function_module_name are required'),
);
}
// Restore session state if provided
if (session_id && session_state) {
await restoreSessionInConnection(connection, session_id, session_state);
} else {
// Ensure connection is established
}
const functionGroupName = function_group_name.toUpperCase();
const functionModuleName = function_module_name.toUpperCase();
logger?.info(
`Starting function module validation: ${functionModuleName} in group ${functionGroupName}`,
);
try {
const client = new AdtClient(connection);
const validationState = await client.getFunctionModule().validate({
functionModuleName: functionModuleName,
functionGroupName: functionGroupName,
packageName: undefined,
description: description,
});
const validationResponse = validationState.validationResponse;
if (!validationResponse) {
throw new Error('Validation did not return a result');
}
const result = parseValidationResponse(
validationResponse as AxiosResponse,
);
if (!result) {
throw new Error('Validation did not return a result');
}
// Get updated session state after validation
logger?.info(
`✅ ValidateFunctionModule completed: ${functionModuleName} (valid=${result.valid}, msg=${result.message || 'N/A'})`,
);
return return_response({
data: JSON.stringify(
{
success: result.valid,
function_module_name: functionModuleName,
function_group_name: functionGroupName,
description: description || null,
validation_result: result,
session_id: session_id || null,
session_state: null, // Session state management is now handled by auth-broker,
message: result.valid
? `Function module name ${functionModuleName} is valid and available`
: `Function module name ${functionModuleName} validation failed: ${result.message || 'Unknown error'}`,
},
null,
2,
),
} as AxiosResponse);
} catch (error: any) {
logger?.error(
`Error validating function module ${functionModuleName}: ${error?.message || error}`,
);
let errorMessage = `Failed to validate function module: ${error.message || String(error)}`;
if (error.response?.status === 404) {
errorMessage = `Function module ${functionModuleName} not found.`;
} 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);
}
}
