#!/bin/bash
set -euo pipefail

# Determine configuration
export RUSTFLAGS="-D warnings"
export CARGO_INCREMENTAL=0
export CARGO_EXTRA_FLAGS="--all-features"

# Prepare
echo "Build and install miri"
./miri build --all-targets --locked
./miri install # implicitly locked
echo

# Test
function run_tests {
  if [ -n "${MIRI_TEST_TARGET+exists}" ]; then
    echo "Testing foreign architecture $MIRI_TEST_TARGET"
  else
    echo "Testing host architecture"
  fi

  ./miri test --locked
  if [ -z "${MIRI_TEST_TARGET+exists}" ]; then
    # Only for host architecture: tests with optimizations (`-O` is what cargo passes, but crank MIR
    # optimizations up all the way).
    MIRIFLAGS="-O -Zmir-opt-level=4" ./miri test --locked
  fi

  # On Windows, there is always "python", not "python3" or "python2".
  if command -v python3 > /dev/null; then
    PYTHON=python3
  else
    PYTHON=python
  fi

  # "miri test" has built the sysroot for us, now this should pass without
  # any interactive questions.
  ${PYTHON} test-cargo-miri/run-test.py
  echo
}

# host
run_tests

case $HOST_TARGET in
  x86_64-unknown-linux-gnu)
    MIRI_TEST_TARGET=i686-unknown-linux-gnu run_tests
    MIRI_TEST_TARGET=aarch64-apple-darwin run_tests
    MIRI_TEST_TARGET=i686-pc-windows-msvc run_tests
    ;;
  x86_64-apple-darwin)
    MIRI_TEST_TARGET=mips64-unknown-linux-gnuabi64 run_tests # big-endian architecture
    MIRI_TEST_TARGET=x86_64-pc-windows-msvc run_tests
    ;;
  i686-pc-windows-msvc)
    MIRI_TEST_TARGET=x86_64-unknown-linux-gnu run_tests
    MIRI_TEST_TARGET=x86_64-apple-darwin run_tests
    ;;
  *)
    echo "FATAL: unknown OS"
    exit 1
    ;;
esac