Does anyone know of a coditional to detect what action has been triggered?

<?php

function sliced_audit_trail_main( $post_id ) {

    function main_stuff_here() {
        #code
    }
    return $post_id;
}


function sliced_onSave_audit_trail( $post_id ) {

    /* Get the post type object. */
    $the_post = get_post( $post_id );

    // If it is our form has not been submitted, so we dont want to do anything
    if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;
    // don't save on 'new post'
    if ( get_post_status( $post_id ) == 'auto-draft' ) return;
    // don#'t save on delete 
    if ( get_post_status( $post_id ) == 'trash' ) return;

    sliced_audit_trail_main( $post_id )

}

function sliced_onDelete_audit_trail( $post_id ) {

    /* Get the post type object. */
    $the_post = get_post( $post_id );

    // run code without conditional used in save

    sliced_audit_trail_main( $post_id )

}

add_action( 'save_post', 'sliced_create_audit_trail' );
add_action( 'before_delete_post', 'sliced_onDelete_audit_trail' );

?>

<?php

function sliced_audit_trail_main( $post_id ) {

    /* Get the post type object. */
    $the_post = get_post( $post_id );

    if ( is_action('save_post') ) :

        # conditionals to only be used when save submitted by user

    endif;

    function main_stuff_here() {
        #code
    }
    return $post_id;
}

add_action( 'save_post', 'sliced_audit_trail_main' );
add_action( 'before_delete_post', 'sliced_audit_trail_main' );

?>