#!/usr/bin/env bash
# Fetch (or update) the three repos this deployment is built from.
#
#   scripts/fetch.sh            clone/init the submodules, check out and fast-forward branch "sv" in each
#   scripts/fetch.sh --pinned   check out exactly the commits recorded in this repo (detached HEAD)
#
# Also adds the original DARC repos as the local-only remote "upstream", so upstream changes
# can be pulled in with `git fetch upstream`.
set -euo pipefail
cd "$(dirname "$0")/.."

BRANCH=sv
declare -A UPSTREAM=(
  [50ohm]=https://github.com/DARC-e-V/50ohm.git
  [50ohm-contents-dl]=https://github.com/DARC-e-V/50ohm-contents-dl.git
  [50ohm-ansible]=https://github.com/DARC-e-V/50ohm-ansible.git
)

git submodule sync --quiet
git submodule update --init

for repo in "${!UPSTREAM[@]}"; do
  if ! git -C "$repo" remote | grep -qx upstream; then
    git -C "$repo" remote add upstream "${UPSTREAM[$repo]}"
    echo "$repo: added remote upstream"
  fi
  if [[ "${1:-}" != "--pinned" ]]; then
    git -C "$repo" fetch --quiet origin
    git -C "$repo" checkout --quiet "$BRANCH"
    git -C "$repo" merge --quiet --ff-only "origin/$BRANCH" || echo "$repo: $BRANCH has local commits, not fast-forwarded"
  fi
  echo "$repo: $(git -C "$repo" rev-parse --abbrev-ref HEAD) @ $(git -C "$repo" rev-parse --short HEAD)"
done

[[ -f .env ]] || { cp .env.example .env && echo "created .env from .env.example"; }
echo "Done. Next: make build && make up"