# Data ## Overview Filesystem access endpoints scoped to the configured `dataDir`. Used by MappingModeler and the CSV picker to browse, read, write, and delete files in a sandboxed area of the server. All sensitive operations sanitize paths to prevent directory traversal, and DELETE on a file checks `readwrite` access on the optional `source` parameter. ## Modules ### 1. Listing (`files.js`) Lists file names inside `dataDir/` (`dataController.getFilesList`). ### 2. File CRUD (`file.js`) - `GET` reads the parsed content of `dataDir//`. - `POST` overwrites/creates the file with the body's `data` payload. - `DELETE` removes the file, with optional `readwrite` check against a source. ### 3. CSV preview (`csv.js`) Streams the first N lines of a CSV file as JSON rows for quick preview in the UI. ### 4. Directory creation (`dir.js`) Creates a new sub-directory under `dataDir`. ```{toctree} :maxdepth: 5 :caption: Contents ``` ## Files in this directory - `csv.js` - `dir.js` - `file.js` - `files.js`