#!/usr/bin/env bash
set -o pipefail

GIT_ROOT=$(cd "${BASH_SOURCE%/*}" && git rev-parse --show-toplevel)

source "${GIT_ROOT}/_assets/scripts/colors.sh"

if [[ $UNIT_TEST_RERUN_FAILS == 'true' ]]; then
  GOTESTSUM_EXTRAFLAGS="${GOTESTSUM_EXTRAFLAGS} --rerun-fails"
elif [[ $UNIT_TEST_FAILFAST == 'true' ]]; then
  GOTEST_EXTRAFLAGS="${GOTEST_EXTRAFLAGS} -failfast"
fi

if [[ $UNIT_TEST_USE_DEVELOPMENT_LOGGER == 'false' ]]; then
  if [[ -z $BUILD_TAGS ]]; then
    BUILD_TAGS="test_silent"
  else
    BUILD_TAGS="${BUILD_TAGS},test_silent"
  fi
fi

if [[ -z "${UNIT_TEST_COUNT}" ]]; then
  UNIT_TEST_COUNT=1
fi

UNIT_TEST_PACKAGE_TIMEOUT="3m"
UNIT_TEST_PACKAGE_TIMEOUT_EXTENDED="45m"

redirect_stdout() {
  output_file=$1

  if [[ "${CI}" == 'true' ]]; then
    cat > "${output_file}";
  else
    tee "${output_file}";
  fi
}

has_extended_timeout() {
  local package
  for package in ${UNIT_TEST_PACKAGES_WITH_EXTENDED_TIMEOUT}; do
    if [[ "$1" == "${package}" ]]; then
      return 0
    fi
  done
  return 1
}

is_parallelizable() {
  local package
  for package in ${UNIT_TEST_PACKAGES_NOT_PARALLELIZABLE}; do
    if [[ "$1" == "${package}" ]]; then
      return 1
    fi
  done
  return 0
}

run_test_for_package() {
  local package=$1
  local iteration=$2
  echo -e "${GRN}Testing:${RST} ${package} Iteration:${iteration}"
  package_dir=$(go list -f "{{.Dir}}" "${package}")
  output_file="${package_dir}/test_${iteration}.log"
  coverage_file="${package_dir}/test_${iteration}.coverage.out"

  if has_extended_timeout "${package}"; then
    package_timeout="${UNIT_TEST_PACKAGE_TIMEOUT_EXTENDED}"
  else
    package_timeout="${UNIT_TEST_PACKAGE_TIMEOUT}"
  fi

  local report_file="${package_dir}/report_${iteration}.xml"
  local rerun_report_file="${package_dir}/report_rerun_fails_${iteration}.txt"
  local exit_code_file="${package_dir}/exit_code_${iteration}.txt"

  gotestsum_flags="${GOTESTSUM_EXTRAFLAGS}"
  if [[ "${CI}" == 'true' ]]; then
    gotestsum_flags="${gotestsum_flags} --junitfile=${report_file} --rerun-fails-report=${rerun_report_file}"
  fi

  # Cleanup previous coverage reports
  rm -f ${package_dir}/coverage.out.rerun.*

  PACKAGE_DIR=${package_dir} gotestsum --packages="${package}" ${gotestsum_flags} --raw-command -- \
    ./_assets/scripts/test-with-coverage.sh \
    ${package} \
    -v ${GOTEST_EXTRAFLAGS} \
    -timeout "${package_timeout}" \
    -count 1 \
    -tags "${BUILD_TAGS}" | \
    redirect_stdout "${output_file}"

  local go_test_exit=$?

  # Merge package coverage results
  go run ./cmd/test-coverage-utils/gocovmerge.go ${package_dir}/coverage.out.rerun.* > ${coverage_file}

  # Cleanup coverage reports
  rm -f ${package_dir}/coverage.out.rerun.*

  echo "${go_test_exit}" > "${exit_code_file}"
  if [[ "${go_test_exit}" -ne 0 ]]; then
    if [[ "${CI}" == 'true' ]]; then
      echo -e "${YLW}Failed, see the log:${RST} ${BLD}${output_file}${RST}"
    fi
  fi

  return ${go_test_exit}
}

if [[ $UNIT_TEST_REPORT_CODECLIMATE == 'true' ]]; then
	cc-test-reporter before-build
fi

echo -e "${GRN}Testing HEAD:${RST} $(git rev-parse HEAD)"

rm -rf ./**/*.coverage.out

for package in ${UNIT_TEST_PACKAGES}; do
  for ((i=1; i<=UNIT_TEST_COUNT; i++)); do
    if ! is_parallelizable "${package}" || [[ "$UNIT_TEST_FAILFAST" == 'true' ]]; then
      run_test_for_package "${package}" "${i}"
      go_test_exit=$?
      if [[ "$UNIT_TEST_FAILFAST" == 'true' ]]; then
        if [[ "${go_test_exit}" -ne 0 ]]; then
          exit "${go_test_exit}"
        fi
      fi
    else
      run_test_for_package "${package}" "${i}" &
    fi
  done
  wait # Wait for all background jobs to finish
done

# Gather test coverage results
rm -f c.out c-full.out
go run ./cmd/test-coverage-utils/gocovmerge.go $(find -iname "*.coverage.out") >> c-full.out

# Filter out test coverage for packages in ./cmd
grep -v '^github.com/status-im/status-go/cmd/' c-full.out > c.out

# Generate HTML coverage report
go tool cover -html c.out -o test-coverage.html

if [[ $UNIT_TEST_REPORT_CODECLIMATE == 'true' ]]; then
  # https://docs.codeclimate.com/docs/jenkins#jenkins-ci-builds
  GIT_COMMIT=$(git log | grep -m1 -oE '[^ ]+$')
  cc-test-reporter format-coverage --prefix=github.com/status-im/status-go # To generate 'coverage/codeclimate.json'
  cc-test-reporter after-build --prefix=github.com/status-im/status-go
fi

shopt -s globstar nullglob # Enable recursive globbing
if [[ "${UNIT_TEST_COUNT}" -gt 1 ]]; then
  for exit_code_file in "${GIT_ROOT}"/**/exit_code_*.txt; do
    read exit_code < "${exit_code_file}"
    if [[ "${exit_code}" -ne 0 ]]; then
      mkdir -p "${GIT_ROOT}/reports"
      "${GIT_ROOT}/_assets/scripts/test_stats.py" | redirect_stdout "${GIT_ROOT}/reports/test_stats.txt"
      exit ${exit_code}
    fi
  done
fi