#!/usr/bin/env bash
set -euo pipefail
root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$root"
origin="$(git remote get-url origin)"
origin="${origin%/}"
remote_root="$(printf '%s\n' "$origin" | sed -E 's#/[^/]+(\.git)?$##')"
fetch_repo() {
  local repo="$1"
  local branch="$2"
  local dir="$3"
  if [ -d "$dir" ]; then
    git -C "$dir" rev-parse --is-inside-work-tree >/dev/null
    git -C "$dir" remote set-url origin "$repo"
    git -C "$dir" fetch origin "$branch"
    git -C "$dir" checkout "$branch"
    git -C "$dir" pull --ff-only origin "$branch"
  else
    git clone --branch "$branch" --single-branch "$repo" "$dir"
  fi
}
fetch_repo_ex() {
  local name="$1"
  local repo="${remote_root}/${name}"
  local branch="master"
  fetch_repo "$repo" "$branch" "third_party/${name}"
}

fetch_repo_ex "build_infra"
fetch_repo_ex "CPP_Core"
fetch_repo_ex "Renderive"
