#!/usr/bin/env bash

set -eou pipefail

DIRECTORY=$(dirname "$0")
PACKAGES_FILE="$DIRECTORY/packages.txt"
SOURCES_FILE="$DIRECTORY/sources.json"

TEMP_DIR=$(mktemp -d "rust-flake-sources.XXXX" -p $XDG_RUNTIME_DIR)
pushd $TEMP_DIR

echo ""
for package in $(cat "$PACKAGES_FILE")
do
  version=$(curl -s "https://crates.io/api/v1/crates/$package" | jq ".crate.max_stable_version" | tr -d '"') 
  echo "Fetching $package -- $version"
  nurl "https://crates.io/crates/$package" "$version" -j | jq ".args" > $package.json
  echo ""
done

popd
jq -s "map({(.pname): .}) | add" $TEMP_DIR/* > $SOURCES_FILE
rm -r $TEMP_DIR