File Upload Core Handler (core/files.rs)

Validates file upload requests, generates unique file IDs and storage keys, and creates file metadata records for the router's file service API.

// Source: https://github.com/juspay/hyperswitch | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
pub mod helpers;

use api_models::files;
use error_stack::ResultExt;

use super::errors::{self, RouterResponse};
use crate::{
    consts,
    routes::SessionState,
    services::ApplicationResponse,
    types::{api, domain},
};

pub async fn files_create_core(
    state: SessionState,
    platform: domain::Platform,
    create_file_request: api::CreateFileRequest,
) -> RouterResponse<files::CreateFileResponse> {
    helpers::validate_file_upload(
        &state,
        platform.get_processor().clone(),
        create_file_request.clone(),
    )
    .await?;
    let file_id = common_ut

... (truncated -- full source via MCP)