#!/bin/bash

# Release next version of the product
# Usage:
#   release <major|minor|patch>
#   release <VERSION> --force
#
# Require:
# - semver - https://github.com/sekati/semver
# - jq - brew install jq

# Common stuff
RED="$(tput setaf 1)"
CYAN="$(tput setaf 6)"
UNDERLINE="$(tput sgr 0 1)"
NOCOLOR="$(tput sgr0)"
function header() { echo -e "$UNDERLINE$CYAN$1$NOCOLOR\n"; }
function error() { echo -e "$UNDERLINE$RED$1$NOCOLOR"; }

function usage() {
	echo "Usage:"
	echo "  `basename $0` <major|minor|patch>"
	echo "  `basename $0` <VERSION> --force"
	echo
}

command -v semver >/dev/null 2>&1 || { error "semver not installed: see comments for instructions."; exit 1; }
command -v jq >/dev/null 2>&1 || { error "jq not installed: see comments for instructions."; exit 1; }

if [ "$1" == "" ]; then
	usage
	exit 1
fi

git pull

# Make sure all changes are merged.
if [ $? -ne 0 ]; then
    error "Branch did not contain the latest changes and could not be merged automatically."
    echo "Please merge by hand before continue."
    echo
    git status
    exit 1
fi

# Dirty repo?
if [ "$(git status --porcelain 2>/dev/null)" ]; then
	error "Repo is dirty."
	echo "Pleae commit changes before continue."
	echo
	git status
	exit 1
fi

# Read existing versions
jq_ver=$(find . -maxdepth 1 -name "*.jquery.json" | xargs cat | jq -r ".version")
cmpnt_ver=$(find . -maxdepth 1 -name "bower.json" | xargs cat | jq -r ".version")
pkg_ver=$(find . -maxdepth 1 -name "package.json" | xargs cat | jq -r ".version")
git_ver=$(git tag | sort -rV | head -n1)

# Non npm package 
[ "$pkg_ver" == "0.0.0" ] && pkg_ver=

# Verify current versions 
current_ver=
[ -n "$jq_ver" ] && current_ver="$jq_ver"
[ -n "$cmpnt_ver" ] && current_ver="$cmpnt_ver"
[ -n "$pkg_ver" ] && current_ver="$pkg_ver"
[ -n "$git_ver" ] && current_ver="$git_ver"
[ -z "$current_ver" ] && current_ver="0.0.0"

# Validate current versions and determine new version
if [ "$1" == "major" ] || [ "$1" == "minor" ] || [ "$1" == "patch" ]; then
	dont_match="Versions in *.jquery.json, bower.json and package.json don’t match."
	if [ -n "$jq_ver" ] && [ "$current_ver" != "$jq_ver" ]; then error $dont_match; fi
	if [ -n "$cmpnt_ver" ] && [ "$current_ver" != "$cmpnt_ver" ]; then error $dont_match; fi
	if [ -n "$pkg_ver" ] && [ "$current_ver" != "$pkg_ver" ]; then error $dont_match; fi
else
	if [ "$1" != "--force" ]; then
		error "Custom versions possible only with --force key."
		echo
		usage
		exit 1
	fi
	new_ver="$1"
fi
if [ -z "$new_ver" ]; then
	[ "$1" == "patch" ] && new_ver=$(semver -p $current_ver)
	[ "$1" == "minor" ] && new_ver=$(semver -n $current_ver)
	[ "$1" == "major" ] && new_ver=$(semver -m $current_ver)
fi

header "Releasing v$new_ver..."

# Update bower.json
if [ -n "$cmpnt_ver" ]; then
	sed -i '' "s^$current_ver^$new_ver^" bower.json
fi

# Update package.json
if [ -n "$pkg_ver" ]; then
	sed -i '' "s^$current_ver^$new_ver^" package.json
fi

# Update *.jquery.json
if [ -n "$jq_ver" ]; then
	find . -maxdepth 1 -name "*.jquery.json" | xargs sed -i '' "s^$current_ver^$new_ver^"
fi

# Build files
[ -f Gruntfile.js ] || [ -f Gruntfile.coffee ] && grunt build
if [ -f src/Gruntfile.js ]; then
	pushd src
	grunt build
	popd
fi

# Commit changed files
git commit -am "$new_ver"
git push origin

# Create tag
git tag "$new_ver"
git push origin --tags

# Publish npm package
if [ -n "$pkg_ver" ]; then
	npm publish
fi

echo "Done."