# Description: an open-source systems monitoring and alerting toolkit
# URL: https://prometheus.io
# Maintainer: Tim Biermann, tbier at posteo dot de
# Depends on: go yarn

name=prometheus
version=2.27.1
release=1
source=(https://github.com/prometheus/prometheus/archive/v$version/$name-$version.tar.gz
  prometheus.conf prometheus.service)

build() {
  cd $name-$version

  cd web/ui/react-app
  yarn --frozen-lockfile
  yarn lint
  cd ../../../
  ./scripts/build_react_app.sh
  cd web/ui
  CGO_ENABLED=0 GOARCH= go generate -x -v

  cd ../../
  gofmt -w ./web/ui

  GOLDFLAGS="-X github.com/prometheus/common/version.Version=$version
    -X github.com/prometheus/common/version.Revision=CRUX
    -X github.com/prometheus/common/version.Branch=master
    -X github.com/prometheus/common/version.BuildUser=$USER@$HOSTNAME
    -X github.com/prometheus/common/version.BuildDate=$(date -u +%Y%m%d-%H:%M:%S ${SOURCE_DATE_EPOCH:+-d @$SOURCE_DATE_EPOCH})
    "

  if [ -n $LDFLAGS ]; then
    # LDFLAGS (and only LDFLAGS) should be passed to -extldflags.
    GOLDFLAGS="$GOLDFLAGS -extldflags $LDFLAGS"
  fi

  go mod vendor
  go build \
    -trimpath \
    -mod=vendor \
    -ldflags "$GOLDFLAGS" \
    -tags netgo,builtinassets \
    ./cmd/prometheus
  go build \
    -trimpath \
    -mod=vendor \
    -ldflags "$GOLDFLAGS" \
    ./cmd/promtool

  install -Dm755 -t $PKG/usr/bin prometheus promtool

  install -Dm644 $SRC/prometheus.conf \
    $PKG/etc/conf.d/prometheus
  install -dm644 $PKG/var/lib/prometheus/data

  install -Dm644 -t $PKG/etc/prometheus \
    documentation/examples/prometheus.yml

  mkdir -p $PKG/etc/prometheus/console_libraries
  for file in console_libraries/*
  do
    install -Dm644 -t $PKG/etc/prometheus/console_libraries/ $file
  done

  mkdir -p $PKG/etc/prometheus/consoles
  for file in consoles/*
  do
    install -Dm644 -t $PKG/etc/prometheus/consoles/ $file
  done

  ## web
  install -dm755 $PKG/usr/share/prometheus/web/ui
  cp -R web/ui/{static,templates} $PKG/usr/share/prometheus/web/ui/
  install -Dm644 $SRC/prometheus.conf $PKG/etc/conf.d/prometheus

  ## install rc file
  install -Dm 755 $SRC/prometheus.service $PKG/etc/rc.d/prometheus
}