#!/bin/bash

VERBOSE=
[[ $1 == "-v" ]] && VERBOSE=y

unique_contributors_num=$(git --no-pager shortlog --no-merges -n -s -- include/kunit lib/kunit tools/testing/kunit/ | wc -l)
patches_not_from_team_num=$(git log --pretty=oneline --perl-regexp \
  --author='^((?!Brendan Higgins|David Gow|Heidi Fahim|Felix Guo|Avinash Kondareddy|Daniel Latypov).*)$' \
  -- include/kunit lib/kunit tools/testing/kunit/ | wc -l)

# Manual list of files to exclude in `all_tests`.
not_tests='lib/kunit/test.c
'

all_tests=$(for file_name in $(grep -Hrnl -e '#include <kunit/test.h>' | grep -E 'test|_kunit\.c' | grep -v '^Documentation')
do
  if [[ ! $not_tests =~ (^|[[:space:]])"$file_name"($|[[:space:]]) ]] ; then
    printf "$file_name\n"
  fi
done)

tests_total_num=$(echo "$all_tests" | wc -l)
test_authors=$(git --no-pager shortlog --no-merges -n -s -- $all_tests)
test_author_num=$(echo "$test_authors" | wc -l)
test_case_num=$(find ./ -type f ! -wholename '*/Documentation/*' ! -name 'test.h' -name 'get_metrics.sh' -print0 |
  xargs -0 grep 'KUNIT_CASE' | wc -l)


if [[ -n $VERBOSE ]]; then
  printf "All tests:\t$all_tests\n"
  printf "Test authors:\t$test_authors\n"
fi
printf "Unique contributors:\t$unique_contributors_num\n"
printf "Number of patches:\t$patches_not_from_team_num\n"
printf "Number of total tests:\t$tests_total_num\n"
printf "Number of test authors:\t$test_author_num\n"