#!/usr/bin/env fish

has_command fzf || begin
	echo "fzf not installed"
	exit 1
end

mkdir -p $ENV_PATH

function filter_existing_directory
	while read -l l
		test -d $DOTFILES_PATH/$l && echo $l
	end
end

function reject_empty_lines
	while read -l l
		test $l = "" || echo $l
	end
end

function link
	while read -l l
		set safe_fn (string replace -a / - $l)
		echo "Linking $ENV_PATH/$safe_fn to $DOTFILES_PATH/$l"
		rm -f $ENV_PATH/$safe_fn
		ln -s $DOTFILES_PATH/$l $ENV_PATH/$safe_fn
	end
end

cat $DOTFILES_PATH/common/envs |
	filter_existing_directory |
	fzf --multi \
		--prompt "Select applicable environments (multi-select w/ TAB): " \
		--preview-window="up:50%:noborder" \
		--preview="ls -la --color=always $DOTFILES_PATH/{}" |
	string trim |
	reject_empty_lines |
	link