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

name=prometheus
version=2.34.0
release=1
source=(https://github.com/prometheus/prometheus/archive/v$version/$name-$version.tar.gz
  prometheus.conf prometheus.service)

build() {
  # setup build env {{{
  export LC_ALL=C

  ## Node Setup
  #export NODE_ENV=production
  #[ ! -d $PKGMK_SOURCE_DIR/npm_cache ] && mkdir $PKGMK_SOURCE_DIR/npm_cache
  #export npm_config_cache=$PKGMK_SOURCE_DIR/npm_cache
  export NPM_CONFIG_PREFIX="$SRC/npm"
  export PATH+=":$NPM_CONFIG_PREFIX/bin"

  ## Go Setup
  export GOPATH="$SRC/gopath"
  export PATH+=":$GOPATH/bin"
  mkdir -p "$GOPATH/src/github.com/grafana/"
  ln -fsrT "$SRC/grafana-$version/" "$GOPATH/src/github.com/grafana/grafana"
  export CGO_LDFLAGS="${LDFLAGS}"
  export CGO_CPPFLAGS="${CPPFLAGS}"
  export CGO_CFLAGS="${CFLAGS}"
  export CGO_CXXFLAGS="${CXXFLAGS}"
  export GOFLAGS="-buildmode=pie -trimpath -modcacherw"

  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)
  "

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

  cd web/ui
  npm install
  npm run build
  npm run build:module
  npm run lint
  GOOS= GOARCH= go generate -x -v
  cd ../..

  gofmt -w ./web/ui
  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
  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

  install -dm755 $PKG/usr/share/prometheus/web/ui
  cp -R web/ui/static $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
}

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