#! /usr/bin/env nix-shell
#! nix-shell -i bash -p nix-prefetch-git jq ruby mastodon.updateScript prefetch-yarn-deps

# http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -euo pipefail
IFS=$'\n\t'

# self-explanatory
UPDATE_URL="https://github.com/vivlim/glitch-soc-snoottube.git"
BRANCH="snoot-prod"


# intermediate variables
PREFETCHED_JSON="$(nix-prefetch-git "$UPDATE_URL" refs/heads/"$BRANCH")"
GIT_REV="$(echo "$PREFETCHED_JSON" | jq -r '.rev')"
REPO_PATH="$(echo "$PREFETCHED_JSON" | jq -r '.path')"
# i believe this is the most "correct" way to get the version string from the source
VERSION="$(ruby -e "require '${REPO_PATH}/lib/mastodon/version.rb'; puts Mastodon::Version.to_s")"

update.sh --url "$UPDATE_URL" --ver "$VERSION" --rev "$GIT_REV"

# prefetch-yarn-deps outputs everything on stdout so we tee /dev/stderr
# so that we can have human-readable output too and just take the end...
#
# it also writes an extra line at the end so we take the last two lines
#
# this sucks but uh whatever
YARN_SHA256="$(prefetch-yarn-deps -v "${REPO_PATH}/yarn.lock" | tee /dev/stderr | tail -n2)"
# now we write it as a nix string (double quoted) to this file so it can be imported
echo "\"$YARN_SHA256\"" > yarn-sha256.nix