#!/bin/sh

set -eu

# Pass [-s] to [tr] to squeeze repeat (use short option) for BusyBox
# compatibility.
COVERAGE_MERGED=$(echo "$CI_JOB_NAME" | tr -s '[\/_ @[]+' '-')

# If the ci--no-coverage label is set, we do not attempt to merge the coverage files
if echo "${CI_MERGE_REQUEST_LABELS:-}" | grep -q '\(^\|,\)ci--no-coverage\($\|,\)' ; then
    rm -f "$BISECT_FILE"*.coverage
    echo "Coverage is disabled."
elif bisect-ppx-report merge --coverage-path "$BISECT_FILE" "$COVERAGE_MERGED".coverage; then
    # Merge was successful, meaning that no corrupted files were found
    COVERAGE_MERGED="$COVERAGE_MERGED".coverage
    rm -f "$BISECT_FILE"*.coverage
    mv "$COVERAGE_MERGED" "$BISECT_FILE"
    echo "Merged coverage files to ${BISECT_FILE}/${COVERAGE_MERGED}"
else
    # Merge was not successful, meaning that coverage was corrupted.
    # Store failure details as an artifact that is treated in the job
    # `unified_coverage`.
    rm -f "$BISECT_FILE"*.coverage
    COVERAGE_MERGED="$COVERAGE_MERGED".corrupt.json
    printf '{"job_id": %s, "job_name": "%s", "job_web_url": "%s"}' \
            "$CI_JOB_ID" "$CI_JOB_NAME" "$CI_JOB_URL" > "$COVERAGE_MERGED"
    mv "$COVERAGE_MERGED" "$BISECT_FILE"
    echo "Corrupt coverage files detected, wrote ${BISECT_FILE}${COVERAGE_MERGED}"
fi