branch-inactivity

#!/usr/bin/env bash

GITHUB_API=${GITHUB_API:-https://api.github.com}
REPO=$1

RED='\033[0;31m'
WHITE='\033[1;37m'
GRAY='\033[1;30m'
NC='\033[0m' # No Color

print_separator() {
    echo -e "${GRAY}============================================================${NC}"
}

check_branch() {
    branch=$2
    last_commit_date=$(curl -H "Authorization: token $GH_TOKEN" -sL $1/$branch | jq -r '.commit.commit.committer.date')
    last_commit_diff_days=$(echo "(`date '+%s'` - `date '+%s' -d "$last_commit_date"`) / (24*3600)" | bc)
    if [ $last_commit_diff_days -gt 89 ]; then
        echo -e "${RED}inactive for more than 90 days (${last_commit_diff_days} days)${NC}"
        return 1
    fi
    echo -e "OK (${last_commit_diff_days} days)"
    return 0
}

read_branches() {
    page=$2
    branches=$(curl -H "Authorization: token $GH_TOKEN" -sL $1?page=$page | jq -r '.[].name')
    branches_length=$(echo $branches | tr -d '\n' | wc -m)
    if [ $branches_length -eq 0 ]; then
        print_separator
        echo "there is no more branches to check"
        return 0
    fi

    for branch in $branches; do
        print_separator
        echo -e "checking ${WHITE}${branch}${NC}"
        check_branch $1 $branch
    done

    page=$(($page+1))
    return $page
}

page=1
while [ $page -gt 0 ]; do
    read_branches $GITHUB_API/repos/$REPO/branches $page
    page=$?
done