#!/bin/bash

set -uo pipefail

JOB=${BUILDKITE_PARALLEL_JOB:-0}
JOB_COUNT=${BUILDKITE_PARALLEL_JOB_COUNT:-1}

# a jest failure will result in the script returning an exit code of 10

i=0
exitCode=0

while read -r config; do
  if [ "$((i % JOB_COUNT))" -eq "$JOB" ]; then
    echo "--- $ node scripts/jest --config $config --coverage --coverageReporters json --coverageDirectory target/kibana-coverage/jest"
    node --max-old-space-size=14336 ./node_modules/.bin/jest --runInBand --config="$config" \
      --coverage --coverageReporters json --coverageDirectory target/kibana-coverage/jest \
      --passWithNoTests || true
    if [[ -f "target/kibana-coverage/jest/coverage-final.json" ]]; then
      echo "Rename coverage-final.json to avoid overwrite"
      mv target/kibana-coverage/jest/coverage-final.json "./target/kibana-coverage/jest/coverage-$(date +%s%3N).json"
    else
      echo "Cannot find coverage-final.json"
    fi
    lastCode=$?

    if [ $lastCode -ne 0 ]; then
      exitCode=10
      echo "Jest exited with code $lastCode"
      echo "^^^ +++"
    fi
  fi

  ((i=i+1))
# uses heredoc to avoid the while loop being in a sub-shell thus unable to overwrite exitCode
done <<< "$(find src x-pack packages -name jest.config.js -not -path "*/__fixtures__/*" | sort)"

exit $exitCode