#!/usr/bin/env bash
# Thin wrapper to run Haskell tooling (stack, hpack, fourmolu, hlint, ...)
# inside the flipstone/haskell-tools Docker image. Usage: ./hs <cmd> [args]
# e.g. ./hs stack build, ./hs stack test, ./hs hpack, ./hs fourmolu
set -euo pipefail

IMAGE="${HAWAT_HASKELL_TOOLS_IMAGE:-ghcr.io/flipstone/haskell-tools:debian-ghc-9.10.3-5d6640d}"
PROJECT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Named Docker volume shared across all worktrees so cached
# GHC/dependencies don't need rebuilding per worktree.
STACK_ROOT_VOLUME="roux-stack-root"

docker volume inspect "${STACK_ROOT_VOLUME}" > /dev/null 2>&1 || \
  docker volume create "${STACK_ROOT_VOLUME}" > /dev/null

exec docker run --rm -i $([ -t 0 ] && printf -- -t) \
  -v "${PROJECT_DIR}:/work" \
  -v "${STACK_ROOT_VOLUME}:/stack-root" \
  -e STACK_ROOT=/stack-root \
  -w /work \
  "${IMAGE}" \
  "$@"