#!/bin/bash

shopt -s extglob

if [ -n "$(git status --porcelain --untracked-files=no)" ]; then

DIRTY="-dirty"

fi

COMMIT=$(git rev-parse --short HEAD)

COMMIT_DATE=$(git --no-pager log -1 --format='%ct')

COMMIT_BRANCH=$(git rev-parse --abbrev-ref HEAD | sed -E 's/[^a-zA-Z0-9]+/-/g')

GIT_TAG=${DRONE_TAG:-$(git tag -l --contains HEAD | head -n 1)}

LAST_TAG=${GIT_TAG:-'v0.0.0'}

if [[ -z "$DIRTY" && -n "$GIT_TAG" ]]; then

VERSION=$GIT_TAG

else

VERSION="${COMMIT}${DIRTY}"

fi

# Chart tag.

if [[ -z "${DIRTY}" && -n "${GIT_TAG}" ]]; then

CHART_VERSION="${GIT_TAG}"

elif [[ "$DIRTY" ]]; then

CHART_VERSION="${LAST_TAG}${DIRTY}.${COMMIT}"

else

CHART_VERSION="${LAST_TAG}-${COMMIT_DATE}.${COMMIT}.${COMMIT_BRANCH}"

fi

# Drop the v prefix for Chart Version to follow existing pattern.

CHART_VERSION="$(echo ${CHART_VERSION} | sed -E 's/^v//' | sed -e 's/^\(.\{55\}\).*/\1/')"

# Chart Repo - Target Repo for releases.

case $CHART_VERSION in

*-alpha*) # All alpha tags

CHART_REPO="alpha" ;;

*-rc*) # All rc tags

CHART_REPO="latest" ;;

+([0-9]).+([0-9]).+([0-9])) # All release tags

CHART_REPO="latest" ;;

*) # Anything else - Future use

CHART_REPO="dev" ;;

esac

if [ -z "$ARCH" ]; then

ARCH=amd64

fi

echo "ARCH: $ARCH"

echo "CHART_REPO: $CHART_REPO"

echo "CHART_VERSION: $CHART_VERSION"

echo "VERSION: $VERSION"