Integrate rga-fzf function into a script

[amigthea]

Could the integration with fzf be implemented in this script?

I would like a way to implement this function

rga-fzf() {
    RG_PREFIX="rga --files-with-matches"
    local file
    file="$(
        FZF_DEFAULT_COMMAND="$RG_PREFIX '$1'" \
            fzf --sort --preview="[[ ! -z {} ]] && rga --pretty --context 5 {q} {}" \
                --phony -q "$1" \
                --bind "change:reload:$RG_PREFIX {q}" \
                --preview-window="70%:wrap"
    )" &&
    echo "opening $file" &&
    xdg-open "$file"
}

into this script

#!/usr/bin/env bash

# Store the STDOUT of fzf in a variable
selection=$(find -type d | fzf --multi --height=80% --border=sharp \
--preview='tree -C {}' --preview-window='45%,border-sharp' \
--prompt='Dirs > ' \
--bind='del:execute(rm -ri {+})' \
--bind='ctrl-p:toggle-preview' \
--bind='ctrl-d:change-prompt(Dirs > )' \
--bind='ctrl-d:+reload(find -type d)' \
--bind='ctrl-d:+change-preview(tree -C {})' \
--bind='ctrl-d:+refresh-preview' \
--bind='ctrl-f:change-prompt(Files > )' \
--bind='ctrl-f:+reload(find -type f)' \
--bind='ctrl-f:+change-preview(cat {})' \
--bind='ctrl-f:+refresh-preview' \
--bind='ctrl-a:select-all' \
--bind='ctrl-x:deselect-all' \
--header '
CTRL-D to display directories | CTRL-F to display files
CTRL-A to select all | CTRL-x to deselect all
ENTER to edit | DEL to delete
CTRL-P to toggle preview
'
)

# Determine what to do depending on the selection
if [ -d "$selection" ]; then
    cd "$selection" || exit
else
    eval "$EDITOR $selection"
fi

maybe using an additional keybind like ctrl+g. I tried to figure out a way to do this but failed, can someone help me out please?