# The quick checks: no VM boots. Catches what most failed runs of the VM tests
# were about (Go and Nix errors, shellcheck, type errors in the test scripts,
# assertions). Evaluating NixOS is the cost: about a minute for the default.
#   router-fast             Go checks; the installer and a settings-built router
#                           (via the release) build
#   router-fast --drivers   also build every VM test's driver (type-checks the
#                           test scripts, builds the VMs' systems): minutes
#   router-fast --all       also every flake check without VMs (assertions,
#                           lib) and `nix flake check --no-build`: many minutes
root=$(git rev-parse --show-toplevel)
cd "$root"
drivers=0 all=0
case ${1:-} in
  --drivers) drivers=1 ;;
  --all) drivers=1 all=1 ;;
  "") ;;
  *) echo "usage: router-fast [--drivers | --all]" >&2; exit 2 ;;
esac
start=$SECONDS
last=$SECONDS
step() {
  printf '\n\033[1m== %s\033[0m  (previous step: %ds)\n' "$*" $((SECONDS - last))
  last=$SECONDS
}

step "web UI: gofmt, vet, tests"
(
  cd pkgs/router-webui
  if [ -n "$(gofmt -l .)" ]; then echo "gofmt wants to change:"; gofmt -l .; exit 1; fi
  go vet ./...
  go test ./...
)

# New files must be known to git for a flake to see them.
untracked=$(git ls-files --others --exclude-standard)
if [ -n "$untracked" ]; then
  printf '\nwarning: not known to git, so the flake ignores them (git add):\n%s\n' "$untracked"
fi

step "systems build (shellcheck of the scripts, units, firewall rules)"
nix build --no-link --max-jobs 1 \
  .#nixosConfigurations.installer.config.system.build.toplevel \
  .#release

if [ "$drivers" = 1 ]; then
  step "VM test drivers build (type check)"
  for t in basic pppoe vlans onestick rollback dns installer apply setup update image wireguard; do
    echo "  $t"
    nix build --no-link --max-jobs 1 ".#checks.x86_64-linux.$t.driver"
  done
fi
if [ "$all" = 1 ]; then
  step "the checks that need no VM"
  nix build --no-link --max-jobs 1 .#checks.x86_64-linux.{lib,assertions,example}
  step "everything evaluates"
  nix flake check --no-build
fi
printf '\n\033[1mok\033[0m (%ds)\n' $((SECONDS - start))