#!/bin/bash

set -ueo pipefail

export LANG=C.UTF-8 LANGUAGE=C.UTF-8
# test-reporter expects reporter identifier under this environment variable
CC_TEST_REPORTER_ID="$COVERAGE_ID"
export CC_TEST_REPORTER_ID
TEST_REPORTER_VERSION="0.6.3"
S3_URL="s3://public-cd-buildkite-cache/$BUILDKITE_PIPELINE_SLUG/$BUILDKITE_LABEL"

download_test_reporter() {
    curl -o test-reporter -L https://codeclimate.com/downloads/test-reporter/test-reporter-"$TEST_REPORTER_VERSION"-linux-amd64
    chmod +x test-reporter
    touch new_test-reporter
}

download_s3_file() {
    aws s3 cp "$S3_URL/$1" "$1"
}

upload_s3_file() {
    if [ -f "$1" ]; then
        aws s3 cp "$1" "$S3_URL/$1" || echo "Could not push $1 to S3 for caching."
    fi
}

echo "--- downloading coverage tool"
download_s3_file test-reporter || download_test_reporter
download_s3_file test-reporter.sha || echo -e "\nCould not download test-reporter.sha"


echo "--- updating rubygems"
gem update --system -N

echo "--- system details"
uname -a
gem env
bundle --version

echo "--- setting up test coverage before build"
./test-reporter before-build

echo "--- bundle install"
bundle install --jobs=7 --retry=3 --without tools maintenance deploy

echo "+++ bundle exec rake"
bundle exec rake test
EXIT_CODE=$?

echo "+++ formatting and uploading test coverage"
./test-reporter sum-coverage
./test-reporter after-build -t simplecov --exit-code "$EXIT_CODE"

echo "--- uploading test-reporter.sha to s3"
if [ -f "new_test-reporter" ]; then
    echo "new test-reporter detected. uploading."
    shasum -a 256 test-reporter > test-reporter.sha
    for i in "test-reporter" "test-reporter.sha"; do
        upload_s3_file "$i"
    done
fi

if shasum --check test-reporter.sha --status; then
    echo "test-reporter shasum mismatch. uploading."
    shasum -a 256 test-reporter > test-reporter.sha
    for i in "test-reporter" "test-reporter.sha"; do
        upload_s3_file "$i"
    done
fi