#!/usr/bin/env bash
set -euo pipefail

# Usage: ./build.sh [poller|web|all] [commit message]
#   web   — build/push ONLY the web image (use this for web iterations so the
#           poller image is never rebuilt/repushed)
#   poller— build/push ONLY the poller image (touch deliberately)
#   all   — both (default)
#
# Deploy pins images by SHA (compose.*.yml ship :latest as a convenience only).

REG="docker.adamksmith.xyz"

cd "$(dirname "$0")"

# First arg is the target if it's a known one; otherwise it's treated as the
# commit message (backward-compatible with `./build.sh "message"`).
case "${1:-}" in
    poller) TARGETS="poller"; MSG="${2:-Build and push images}" ;;
    web)    TARGETS="web";    MSG="${2:-Build and push images}" ;;
    all|"") TARGETS="poller web"; MSG="${2:-Build and push images}" ;;
    *)      TARGETS="poller web"; MSG="${1}" ;;
esac
TARGET="${TARGETS// /+}"

# Stage and commit all changes
git add -A
if git diff --cached --quiet; then
    echo "No changes to commit, using HEAD"
else
    git commit -m "${MSG}"
fi

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

for target in ${TARGETS}; do
    img="${REG}/jbod-${target}"
    echo "Building ${img}:${SHA}"
    docker build --target "${target}" -t "${img}:${SHA}" -t "${img}:latest" .
    echo "Pushing ${img}:${SHA}"
    docker push "${img}:${SHA}"
    docker push "${img}:latest"
done

echo "Done (${TARGET}): ${REG}/jbod-{${TARGETS// /,}}:${SHA}"