pre-push hook to avoid Moodle upstream branches to perform travis/github actions builds all the time

pre-push

#!/bin/bash
# pre-push hook to enable/disable travis and github actions push builds
# based on the nature of the pushed branches.
#  - upstream and deleted ones won't be built.
#  - development ones will be built.
# Requires travis (client) gem binary installed.
# Requires gh (client) binary installed.
# Useful for people wanting to keep their upstream branches updated,
# and not causing them to perform travis/github actions builds all the time, like me :-)
IFS=' '
hasupstreambranch=
hasdevelopmentbranches=
hasdeletedbranches=
while read localref localsha remoteref remotesha; do
    if [[ $localref =~ (master|MOODLE_[[:digit:]]{2,3}_STABLE) ]]; then
        hasupstreambranch="$hasupstreambranch $localref"
    elif [[ $localref =~ \(delete\) ]]; then
        hasdeletedbranches="$hasdeletedbranches $remoteref"
    else
        hasdevelopmentbranches="$hasdevelopmentbranches $localref"
    fi
done
echo
echo "pre-push hook:"
echo "   upstream branches: $hasupstreambranch"
echo "development branches: $hasdevelopmentbranches"
echo "    deleted branches: $hasdeletedbranches"
echo

if [[ -n $hasupstreambranch ]] && [[ -n $hasdevelopmentbranches ]]; then
    echo "Mixed upstream and development branches. Please push them separately."
    exit 1
fi

if [[ -n $hasdeletedbranches ]] && [[ -n $hasdevelopmentbranches ]]; then
    echo "Mixed deleted and development branches. Please push them separately."
    exit 1
fi

if [[ -n $hasupstreambranch ]] && [[ -z $hasdevelopmentbranches ]]; then
    echo "Upstream branches, disabling travis push builds."
    travis settings build_pushes --com --disable
    echo "Upstream branches, disabling github actions builds."
    gh api repos/:owner/:repo/actions/permissions --method PUT --field "enabled=false"
    exit 0
fi

if [[ -n $hasdeletedbranches ]] && [[ -z $hasdevelopmentbranches ]]; then
    echo "Deleted branches, disabling travis push builds."
    travis settings build_pushes --com --disable
    echo "Deleted branches, disabling github actions builds."
    gh api repos/:owner/:repo/actions/permissions --method PUT --field "enabled=false"
    exit 0
fi

if [[ -z $hasupstreambranch ]] && [[ -n $hasdevelopmentbranches ]]; then
    echo "Development branches, enabling travis push builds."
    travis settings build_pushes --com --enable
    echo "Development branches, enabling github actions builds."
    gh api repos/:owner/:repo/actions/permissions --method PUT --field "enabled=true"
    exit 0
fi
echo "Nothing to push?"