/**
* UpdateClass Handler - Update ABAP Class Source Code
*
* Uses AdtClient.updateClass 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,
return_error,
return_response,
} from '../../../lib/utils';
export const TOOL_DEFINITION = {
name: 'UpdateClassLow',
description:
'[low-level] Update source code of an existing ABAP class. Uses session from HandlerContext. Requires lock handle from LockClass operation. - use UpdateClass (high-level) for full workflow with lock/unlock/activate.',
inputSchema: {
type: 'object',
properties: {
class_name: {
type: 'string',
description:
'Class name (e.g., ZCL_TEST_CLASS_001). Class must already exist.',
},
source_code: {
type: 'string',
description:
'Complete ABAP class source code including CLASS DEFINITION and IMPLEMENTATION sections.',
},
lock_handle: {
type: 'string',
description:
'Lock handle from LockClass operation. Required for update operation.',
},
},
required: ['class_name', 'source_code', 'lock_handle'],
},
} as const;
interface UpdateClassArgs {
class_name: string;
source_code: string;
lock_handle: string;
}
/**
* Main handler for UpdateClass MCP tool
*
* Uses AdtClient.updateClass - low-level single method call
*/
export async function handleUpdateClass(
context: HandlerContext,
args: UpdateClassArgs,
) {
const { connection, logger } = context;
try {
const { class_name, source_code, lock_handle } = args as UpdateClassArgs;
// Validation
if (!class_name || !source_code || !lock_handle) {
return return_error(
new Error('class_name, source_code, and lock_handle are required'),
);
}
const client = new AdtClient(connection);
const className = class_name.toUpperCase();
logger?.info(`Starting class update: ${className}`);
try {
// Update class with source code
const updateState = await client
.getClass()
.update(
{ className, sourceCode: source_code },
{ lockHandle: lock_handle },
);
const updateResult = updateState.updateResult;
if (!updateResult) {
throw new Error(
`Update did not return a response for class ${className}`,
);
}
logger?.info(`✅ UpdateClass completed: ${className}`);
return return_response({
data: JSON.stringify(
{
success: true,
class_name: className,
message: `Class ${className} updated successfully. Remember to unlock using UnlockClassLow.`,
},
null,
2,
),
} as AxiosResponse);
} catch (error: any) {
logger?.error(
`Error updating class ${className}: ${error?.message || error}`,
);
// Parse error message
let errorMessage = `Failed to update class: ${error.message || String(error)}`;
if (error.response?.status === 404) {
errorMessage = `Class ${className} not found.`;
} else if (error.response?.status === 423) {
errorMessage = `Class ${className} is locked by another user or lock handle is invalid.`;
} 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);
}
}
