#!/bin/bash

set -e # Abort on first failure, so we don't mess something up

check_path() {
    if ! [ -x "$(command -v "$1")" ]; then
        echo >&2 "error: $1 not available on path"
        if [ -n "$2" ]; then
            echo "($2)" 
        fi
        exit 1
    fi
}

check_path git
check_path sed
check_path rebar3 "http://www.rebar3.org"
check_path chandler "https://github.com/mattbrictson/chandler"

if [ -z "$1" ]; then
    # Missing tag name
    echo "usage: cut <version>" >&2
    exit 129
fi
if [ ! -z "$(git status --short)" ]; then
    # Sanity check
    echo "fatal: dirty repository" >&2
    exit 128
fi

VSN="$1"

# Update version
sed -i "" -e "s/{vsn, .*}/{vsn, \"$VSN\"}/g" src/*.app.src
git add src/*.app.src
if [ -f doc/overview.edoc ]; then
    sed -i "" -e "s/@version .*/@version $VSN/g" doc/overview.edoc
    git add doc/overview.edoc
fi

# Commit, tag and push
git commit -m "Version $VSN"
git tag -s "$VSN" -m "Version $VSN"
git push && git push --tags

# Clean and publish package and docs
rm -rf ebin
rm -rf src/**/*.beam
rm -rf test/**/*.beam
rebar3 hex publish
rebar3 hex docs

# Push changelog to GitHub Releases
chandler push "$VSN"
