#!/bin/bash
set -euo pipefail

mod_list=${1:-/factorio/mods/mod-list.json}
mkdir -p "$(dirname "$mod_list")"

if [[ ! -s "$mod_list" ]]; then
  printf '{"mods":[{"name":"base","enabled":true}]}\n' > "$mod_list"
fi

tmp_file="${mod_list}.tmp"
jq '
  if (.mods | map(.name) | index("recycler")) then
    .mods |= map(if .name == "recycler" then .enabled = false else . end)
  else
    .mods += [{"name":"recycler","enabled":false}]
  end
' "$mod_list" > "$tmp_file"
mv "$tmp_file" "$mod_list"