From 50b2c07548e9fa05d09cda9a79f04ee0706bcb6e Mon Sep 17 00:00:00 2001
From: David Newhall II <david@sleepers.pro>
Date: Wed, 12 Jun 2019 14:32:28 -0700
Subject: [PATCH] Build formula file from template with Makefile.

---
 .gitignore  |  2 ++
 .travis.yml |  4 ++--
 Makefile    | 28 ++++++++++++++++++----------
 3 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/.gitignore b/.gitignore
index f99dc2a2..2cde1178 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,8 @@
 /unifi-poller*.pkg
 /unifi-poller.macos
 /unifi-poller.linux
+/unifi-poller.rb
+*.sha256
 /vendor
 .DS_Store
 *~
diff --git a/.travis.yml b/.travis.yml
index d48e8e87..84b7666d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,13 +20,13 @@ before_install:
 - chmod +x $GOPATH/bin/dep
   # download super-linter: golangci-lint
 - curl -sL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin latest
-- curl -sLo ./up.tgz https://github.com/davidnewhall/unifi-poller/archive/${TRAVIS_TAG}.tar.gz
 install:
 - dep ensure
 - rvm $brew_ruby do gem install --no-document fpm
 script:
 - rvm $brew_ruby do make release
-- openssl dgst -sha256 ./up.tgz | tee release/${TRAVIS_TAG}.tar.gz.sha256
+# TODO: upload the formula somewhere.
+- make formula
 deploy:
   provider: releases
   api_key:
diff --git a/Makefile b/Makefile
index c884c635..3eb44d79 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 BINARY:=unifi-poller
 URL=https://github.com/davidnewhall/unifi-poller
-MAINT="David Newhall II <david at sleepers dot pro>"
-DESC="This daemon polls a Unifi controller at a short interval and stores the collected metric data in an Influx Database."
+MAINT=David Newhall II <david at sleepers dot pro>
+DESC=This daemon polls a Unifi controller at a short interval and stores the collected metric data in an Influx Database.
 PACKAGE:=./cmd/$(BINARY)
 ifeq ($(VERSION),)
 	VERSION:=$(shell git tag -l --merged | tail -n1 | tr -d v||echo development)
@@ -24,8 +24,8 @@ release: clean test $(BINARY)-$(VERSION)-$(ITERATION).x86_64.rpm $(BINARY)_$(VER
 # Delete all build assets.
 clean:
 	# Cleaning up.
-	rm -f $(BINARY){.macos,.linux,.1,}{,.gz}
-	rm -f $(BINARY){_,-}*.{deb,rpm,pkg} md2roff
+	rm -f $(BINARY){.macos,.linux,.1,}{,.gz} $(BINARY).rb
+	rm -f $(BINARY){_,-}*.{deb,rpm,pkg} md2roff v$(VERSION).tar.gz.sha256
 	rm -f cmd/$(BINARY)/README{,.html} README{,.html} ./$(BINARY)_manual.html
 	rm -rf package_build_* release
 
@@ -80,8 +80,8 @@ $(BINARY)-$(VERSION)-$(ITERATION).x86_64.rpm: check_fpm package_build_linux
 		--before-remove scripts/before-remove.sh \
 		--license MIT \
 		--url $(URL) \
-		--maintainer $(MAINT) \
-		--description $(DESC) \
+		--maintainer "$(MAINT)" \
+		--description "$(DESC)" \
 		--chdir package_build_linux
 
 deb: clean $(BINARY)_$(VERSION)-$(ITERATION)_amd64.deb
@@ -95,8 +95,8 @@ $(BINARY)_$(VERSION)-$(ITERATION)_amd64.deb: check_fpm package_build_linux
 		--before-remove scripts/before-remove.sh \
 		--license MIT \
 		--url $(URL) \
-		--maintainer $(MAINT) \
-		--description $(DESC) \
+		--maintainer "$(MAINT)" \
+		--description "$(DESC)" \
 		--chdir package_build_linux
 
 osxpkg: clean $(BINARY)-$(VERSION).pkg
@@ -110,8 +110,8 @@ $(BINARY)-$(VERSION).pkg: check_fpm package_build_osx
 		--osxpkg-identifier-prefix com.github.davidnewhall \
 		--license MIT \
 		--url $(URL) \
-		--maintainer $(MAINT) \
-		--description $(DESC) \
+		--maintainer "$(MAINT)" \
+		--description "$(DESC)" \
 		--chdir package_build_osx
 
 # OSX packages use /usr/local because Apple doesn't allow writing many other places.
@@ -146,6 +146,14 @@ package_build_linux: readme man linux
 check_fpm:
 	@fpm --version > /dev/null || (echo "FPM missing. Install FPM: https://fpm.readthedocs.io/en/latest/installing.html" && false)
 
+formula: $(BINARY).rb
+v$(VERSION).tar.gz.sha256:
+	# Calculate the SHA from the Github source file.
+	curl -sL https://github.com/davidnewhall/unifi-poller/archive/v$(VERSION).tar.gz | openssl dgst -sha256 | tee v$(VERSION).tar.gz.sha256
+$(BINARY).rb: v$(VERSION).tar.gz.sha256
+	# Creating formula from template using sed.
+	sed "s/{{Version}}/$(VERSION)/g;s/{{SHA256}}/$$(<v$(VERSION).tar.gz.sha256)/g;s/{{Desc}}/$(DESC)/g;s%{{URL}}%$(URL)%g" templates/$(BINARY).rb.tmpl | tee $(BINARY).rb
+
 # Extras
 
 # Run code tests and lint.