#!/usr/bin/env nix-shell
#!nix-shell -i bash -p php.packages.composer git

SOURCE=$1
WRITE_PATH=$(realpath $2)
SOURCE_EXTRACTED=$(mktemp -du)

cp -r $SOURCE $SOURCE_EXTRACTED
chmod -R +w $SOURCE_EXTRACTED

cd $SOURCE_EXTRACTED

rm composer.lock

composer update

rm -rf vendor

$(nix-build -E 'let composer2nix = builtins.fetchGit {url = "https://git.chir.rs/darkkirb/composer2nix.git"; }; in import composer2nix')/bin/composer2nix

cp composer-env.nix php-packages.nix $WRITE_PATH

rm result

git diff --no-index $SOURCE $SOURCE_EXTRACTED | sed "s,$SOURCE,,g" | sed "s,$SOURCE_EXTRACTED,,g" > $WRITE_PATH/update.patch