#!/bin/bash

BIN=bin

function setup_external_tools {
  if [ ! -f "$BIN/test-runner" ]
  then
    mkdir -p "$BIN"
    cabal v2-install --installdir="$BIN" test-lib
  fi
}

function show_usage {
cat <<EOM
Usage: $0 COMMAND COMANND_OPTIONS
Available commands:
  run       Run Cryptol
  build     Build Cryptol
  haddock   Generate Haddock documentation
  test      Run some tests
  exe-path  Print the location of the local executable
EOM
}




if [ "$#" == "0" ]
then
  show_usage
  exit 1
fi

COMMAND=$1
shift

case $COMMAND in
  run)
    cabal exec cryptol -- $*;;

  build)
    echo Building Cryptol

    # XXX: This is a workaround the fact that currently Cabal
    # will not rebuild this file, even though it has TH code, that
    # depends on the environment.  For now, we temporarily modify the
    # file, then build, then revert it back after build.

    echo -- Last build $(date) >> src/GitRev.hs

    cabal v2-build exe:cryptol

    # WARNING!!!:  this is here to undo the HACK date stamp, and will
    # undo any changes to this file, so comment it out if you'd like
    # to change the file
    git checkout src/GitRev.hs
    ;;

  haddock)
    echo Building Haddock documentation
    cabal v2-haddock;;


  test)
    echo Running tests
    setup_external_tools
    if [ "$#" == "0" ]
      then TESTS=tests
      else TESTS=$*
    fi
    $BIN/test-runner --ext=.icry \
                     --exe=cabal \
                     -F v2-run -F -v0 -F exe:cryptol -F -- -F -b \
                     $TESTS
    ;;

  help)
    show_usage
    exit 0;;

  exe-path)
    cabal exec which cryptol
    exit 0;;

  *)
    echo Unrecognized command: $COMMAND
    show_usage
    exit 1;;

esac