release

#!/usr/bin/env bash
set -eu -o pipefail

# TODO: Work without admin / bypass push rules

DEFAULT_BRANCH=master

matchver() {
    # shellcheck disable=SC2319
    [[ $1 =~ v([0-9]+)\.([0-9]+)\.([0-9]+) ]] || return $?
    patch=${BASH_REMATCH[3]}
    minor=${BASH_REMATCH[2]}
    major=${BASH_REMATCH[1]}
}

fmtver() {
    local maj min pat
    maj=$1
    min=$2
    pat=$3
    printf 'v%s.%s.%s' "$maj" "$min" "$pat"
}

prompt() {
    read -re -p "$* "
    echo "$REPLY"
}

panic() {
    printf 'ERR %s\n' >&2 "$*"
    exit 1
}

################################################################

if [[ $(git status -s) ]]; then
    panic 'Dirty work tree'
fi

if [[ $(git branch --show-current) != "$DEFAULT_BRANCH" ]]; then
    panic "Please run git switch $DEFAULT_BRANCH"
fi

if ! latest=$(git describe --tags --match="v[0-9]*" --abbrev=0 HEAD); then
    panic 'Could not detect a recent version tag!'
fi

if ! matchver "$latest"; then
    panic 'Could not extract version components'
fi

if ! ver=$(prompt 'Latest version is' "$(fmtver "$major" "$minor" "$patch")." ' Next version?'); then
    panic 'Could not get next version'
fi

if ! matchver "$ver"; then
    panic 'Invalid version inputted.'
fi


if ! [[ $latest < $ver ]]; then
    panic "$ver < $latest!  Need a version that lexicographically sorts after $latest."
fi

if ! name=$(prompt '(Nick)name for this release.  Make it fun!'); then
    panic 'Could not get name'
fi

sed -i''\
    -e "s,:version \".*\",:version \"$ver\"," \
    -e "s,:name \".*\",:name \"$name\"," \
    src/version.fnl

git add src/version.fnl
git commit -m "release: $ver - $name"
git tag "$ver"

prompt 'Everything look right?  Type Control-c to cancel.'

git push origin "$DEFAULT_BRANCH"
git push origin "$ver"

echo 'Check https://github.com/bismuthsoft/super_rogue/actions/workflows/release.yml'
echo "Then edit https://github.com/bismuthsoft/super_rogue/releases/tag/$ver"