import { BaseEditStrategy } from './BaseEditStrategy.js';
import { EditOperation, EditContext, EditResult, ReplaceOperation } from './IEditStrategy.js';
/**
* Strategy for handling find and replace operations
* Finds text in a file and replaces it with new text
*/
export class FindReplaceStrategy extends BaseEditStrategy {
/**
* Checks if the operation is a replace operation
*/
async canHandle(operation: EditOperation): Promise<boolean> {
return operation.type === 'replace';
}
/**
* Executes the find and replace operation
*/
async execute(operation: EditOperation, context: EditContext): Promise<EditResult> {
if (operation.type !== 'replace') {
throw new Error('Cannot execute non-replace operation');
}
const replaceOp = operation as ReplaceOperation;
try {
// Get current content
const currentContent = await this.getFileContent(context.filepath, context.client);
// Perform replacement
const newContent = currentContent.replace(replaceOp.find, replaceOp.replace);
// Check if replacement actually happened
if (currentContent === newContent) {
return {
success: false,
error: `Text "${replaceOp.find}" not found in ${context.filepath}`,
suggestion: 'Check the exact text to replace. Text search is case-sensitive.',
working_alternative: {
description: 'Append instead',
example: { file: context.filepath, append: replaceOp.replace }
}
};
}
// Update file
await this.updateFileContent(context.filepath, newContent, context.client);
return this.formatResult({
success: true,
message: `Successfully replaced "${replaceOp.find}" with "${replaceOp.replace}" in ${context.filepath}`,
operation: 'replace',
filepath: context.filepath,
find: replaceOp.find,
replace: replaceOp.replace
});
} catch (error: unknown) {
const errorMessage = error instanceof Error ? error.message : String(error);
return this.formatErrorWithAlternative(
`Replace failed: ${errorMessage}`,
'Try obsidian_simple_replace for basic text replacement',
{ filepath: context.filepath, find: replaceOp.find, replace: replaceOp.replace }
);
}
}
}
