#!/usr/bin/make -f
include /usr/share/dpkg/pkg-info.mk

# Uncomment this to enable verbose mode.
#export DH_VERBOSE := 1

# Acceptance tests need to be run separately.
export DH_GOPKG := github.com/prometheus/alertmanager
export DH_GOLANG_EXCLUDES := asset examples test/.*/acceptance ui/react-app
export DH_GOLANG_EXCLUDES_ALL := 0
export DH_GOLANG_INSTALL_EXTRA := template/default.tmpl template/email.tmpl ui/app

METAPKG := github.com/prometheus/common

BRANCH     := debian/sid
USER       := team+pkg-go@tracker.debian.org
BUILD_DATE := $(shell date --utc --date='@$(SOURCE_DATE_EPOCH)' \
    +%Y%m%d-%H:%M:%S)
GO_VERSION := $(shell go version | sed 's/go version \(\S*\).*/\1/')
BUILDFLAGS  = -ldflags \
  " -X $(METAPKG)/version.Version=$(DEB_VERSION_UPSTREAM)\
    -X $(METAPKG)/version.Revision=$(DEB_VERSION)\
    -X $(METAPKG)/version.Branch=$(BRANCH)\
    -X $(METAPKG)/version.BuildUser=$(USER)\
    -X $(METAPKG)/version.BuildDate=$(BUILD_DATE)\
    -X $(METAPKG)/version.GoVersion=$(GO_VERSION)"

%:
	dh $@ --builddir=_build --buildsystem=golang

MANAGER_BINNAME := $(DEB_SOURCE)
TOOL_BINNAME := amtool

override_dh_auto_build:
	dh_auto_build -- $(BUILDFLAGS)
	# Rename the binary to match the debian package.
	mv -v _build/bin/alertmanager _build/bin/$(MANAGER_BINNAME)
	# Build bash completion scripts.
	mkdir -vp _build/bash_completion.d
	_build/bin/$(TOOL_BINNAME) --completion-script-bash > _build/bash_completion.d/$(TOOL_BINNAME)

MAN_WHATIS_MANAGER := $(MANAGER_BINNAME) \\- the Prometheus alert manager
MAN_WHATIS_TOOL := $(TOOL_BINNAME) \\- Tooling for the Prometheus alert manager
MAN_PROG_MANAGER := $(shell echo $(MANAGER_BINNAME) | tr [:lower:] [:upper:])
MAN_PROG_TOOL := $(shell echo $(TOOL_BINNAME) | tr [:lower:] [:upper:])
MAN_DATE := $(shell date --utc --date='@$(SOURCE_DATE_EPOCH)' '+%B %Y')

execute_before_dh_installman:
	_build/bin/$(MANAGER_BINNAME) --help-man > _build/$(MANAGER_BINNAME).1
	_build/bin/$(TOOL_BINNAME) --help-man > _build/$(TOOL_BINNAME).1
	# Fix title header and footers.
	sed -i '/^.TH .*/c.TH $(MAN_PROG_MANAGER) "1" "$(MAN_DATE)" "$(DEB_SOURCE) $(DEB_VERSION_UPSTREAM)" "Prometheus"/' \
        _build/$(MANAGER_BINNAME).1
	sed -i '/^.TH .*/c.TH $(MAN_PROG_TOOL) "1" "$(MAN_DATE)" "$(DEB_SOURCE) $(DEB_VERSION_UPSTREAM)" "Prometheus"/' \
        _build/$(TOOL_BINNAME).1
	# Remove build user/build date/go version headers, which is ugly.
	sed -i '/^  /d' _build/*.1
	# Fix whatis entries.
	sed -i '/^.SH "NAME"/,+1c.SH "NAME"\n$(MAN_WHATIS_MANAGER)' _build/$(MANAGER_BINNAME).1
	sed -i '/^.SH "NAME"/,+1c.SH "NAME"\n$(MAN_WHATIS_TOOL)' _build/$(TOOL_BINNAME).1
	# Remove default values, as they create unwieldy long lines.
	sed -i 's/\\fB--\(.*\)=".*"\\fR/\\fB--\1\\fR/' _build/*.1
	# Fix executable path in amtool examples
	sed -i 's/\.\/amtool/amtool/' _build/$(TOOL_BINNAME).1

execute_after_dh_auto_test:
	# Don't abort if acceptance tests fail, as they are too sensitive to
	# timing issues.
	( for pkg in cli/acceptance with_api_v1/acceptance \
	    with_api_v2/acceptance; do \
	    DH_GOLANG_EXCLUDES= DH_GOPKG=$(DH_GOPKG)/test/$$pkg \
	    dh_auto_test || { \
		echo "*** Acceptance tests failed ***"; \
		exit 1; \
		}; \
	  done; ) || true

override_dh_auto_install-indep:
	dh_auto_install -- --no-binaries
	dh_install usr/share/gocode

override_dh_auto_install-arch:
	dh_auto_install -- --no-source