prepare-commit-msg

#!/bin/sh

format=$(cat << EOS
Merge    pray
feat     sparkles
fix      wrench
chore    tea
refactor hammer
docs     memo
style    dress
perf     runner
test     eyes
format   art
rm       fire
bug      bug
hotfix   ambulance
docker   whale
init     tada
perform  zap
add      heavy_plus_sign
EOS
)

awk_script="$(echo "$format" | awk '{
    if (NR != 1) printf "else "
    print "if (match($1, /"$1"/)) print \":"$2":\"$0"
}')
else print \$0"

_command_exists() {
  hash "$1" 2>/dev/null
}

msg=$(cat "$1")

if [ "$msg" != "" ] ; then
    echo "$msg" | awk -F '(' "{ $awk_script }"  > "$1"
else
    if _command_exists peco ; then
        type=$(echo "$format" | awk '{print ":"$2":"$1}' | peco)
        scope=$(git status -s | awk '{
            if (match($1, /A|M/)) {
                print $2
            }
        }' | peco)

        echo "$type($scope): " > "$1"
    fi
fi