Git pre-commit hook to verify your email in public/work repository

pre-commit.sh

#!/bin/bash

# Place it in ~/.githooks/pre-commit & configure your emails and domains
# Then run:
#    git config --global core.hooksPath ~/.githooks

public_email="[email protected]"
public_domain="github.com"
work_email="[email protected]"
work_domain="your.work.domain"


origin_url=$(git remote get-url origin)
origin_domain=""
exit_code=0

get_domain() {
   local protocol=$(echo "${origin_url}" | sed 's/\([a-z]*\):.*/\1/')
   if [[ $protocol == "https" ]]; then
       origin_domain=$(echo "${origin_url}" | sed 's/.*\/\/\(.*\)\/.*\/.*/\1/')
   else
       origin_domain=$(echo "${origin_url}" | sed 's/.*git@\(.*\):.*/\1/')
   fi
}

verify_user(){
    local email=$(git config user.email)
    case ${origin_domain} in
        ${public_domain})
            if [[ $email != $public_email ]]; then
              echo "email not configured to personal email"
              echo "run:"
              echo "   git config user.email ${public_email}"
              echo ""
              exit_code=1
            fi
        ;;
        ${work_domain})
            if [[ $email != $work_email ]]; then
              echo "email not configured to work email"
              echo "run:"
              echo "   git config user.email ${work_email}"
              echo ""
              exit_code=1
            fi
        ;;
        *) 
            printf "%b" "\e[33m WARNING: no git user has been set for this domain '${origin_domain}' in the pre-commit hook \e[39m\n"
        ;;
    esac
}

get_domain
verify_user
exit $exit_code