#!/usr/bin/make -f

# Upstream ant project file build.xml hardcodes classpaths unsatisfiable
# under Debian. Then I patch build.xml to extract, re-arrange and re-inject
# them.
# Also I add the run-time classpath into the jar's manifest so that jh_depends
# could work effectively and it doesn't need to be hardcoded into the launcher
# script.

VERSION_UPSTREAM = $(shell dpkg-parsechangelog -S Version | sed -E 's/\+repack.*$$//')

# Extract upstream main.classpath
THEIR_MAIN_CLASSPATH = $(shell \
  ant -nouserlib -quiet get-their-main-classpath | \
  head -1 | \
  sed 's/^ *\[echo\] *//' \
)

# Extract upstream test.classpath
THEIR_TEST_CLASSPATH = $(shell \
  ant -nouserlib -quiet get-their-test-classpath | \
  head -1 | \
  sed 's/^ *\[echo\] *//' \
)

# Macro to re-arrange classpath to match Debian's
their_to_our = $(shell \
  echo '$(1)' | \
  sed 's/:/\n/g' | \
  sed '\&^$(CURDIR)/\(extlibs\|build\)&!d' | \
  sed 's:$(CURDIR)/extlibs:/usr/share/java:' | \
  sed -r 's/jline-.*\.jar/jline2.jar/' | \
  sed -r 's/junit-.*\.jar/junit4.jar/' | \
  sed -r 's/(netty-.*)-.*\.jar/\1.jar/' | \
  sed -r 's/(mysql-connector-java)-.*\.jar/mariadb-java-client.jar/' | \
  sed -r 's/(postgresql)-.*\.jar/\1.jar/' | \
  sed -r 's/(guava)-.*.jar/\1.jar/' | \
  sed -r 's/(stringtemplate).jar/\14.jar/' | \
  sed -r 's/antlr(-.*)?-3\..*\.jar/antlr3\1.jar/' | \
  sed -r '/antlrall/d' | \
  sed -r '/java-sizeof/d' | \
  sed -r '/failureaccess/d' | \
  sed -r '/antlr|netty/!s/(java\/.*)-[0-9\._]*\.jar/\1.jar/' | \
  xargs echo | \
  sed 's/ /:/g' \
)
 
# Fix main.classpath and test.classpath
OUR_MAIN_CLASSPATH = $(call their_to_our,$(THEIR_MAIN_CLASSPATH))
OUR_TEST_CLASSPATH = $(call their_to_our,$(THEIR_TEST_CLASSPATH))

# Runtime classpath uses space as separator instead of ':'
OUR_RUNTIME_CLASSPATH = $(shell echo '$(OUR_MAIN_CLASSPATH)' | sed 's/:/ /g')

# Print and check classpaths to help finding missing dependencies
print_classpath = echo '$(1)' | sed 's/:/\n/g' | sort | grep -v '$(CURDIR)/build/'
ls_classpath = ls -1 $(foreach path,$(shell echo '$(1)' | sed 's/:/\n/g' | grep -v '$(CURDIR)/build/'),'$(path)')
check_classpath:
	@echo THEIR_MAIN
	@$(call print_classpath,$(THEIR_MAIN_CLASSPATH)) || true
	@echo OUR_MAIN
	@$(call ls_classpath,$(OUR_MAIN_CLASSPATH))
	@echo THEIR_TEST
	@$(call print_classpath,$(THEIR_TEST_CLASSPATH)) || true
	@echo OUR_TEST
	@$(call ls_classpath,$(OUR_TEST_CLASSPATH))

DEBIAN_IN = $(wildcard debian/*.in)
DEBIAN_OUT = $(patsubst %.in,%,$(DEBIAN_IN))

# Requested to prevent deletion of $(DEBIAN_OUT) files as intermediate files
.SECONDARY: $(DEBIAN_OUT)

info:
	@echo $(DEBIAN_OUT)

debian/%: debian/%.in
	sed -e 's/@VERSION@/$(VERSION_UPSTREAM)/g' \
	  $< >$@

%:
	dh $@ --with python3 --with javahelper --with jh-maven-repo-helper

override_dh_auto_configure: check_classpath $(DEBIAN_OUT)
	dh_auto_configure

override_dh_auto_build:
	# Reproducible builds - These files' mtime are stored into the
	# generated $py.class files
	touch -d @$(SOURCE_DATE_EPOCH) Lib/*.py lib-python/*/*.py
	# Build the class files.
	# -nouserlib is required to prevent conflicts with the ant jython plugin
	ant -nouserlib developer-build jar javadoc \
	  -Djython.java.version=8 \
	  -Dmain.classpath=$(OUR_MAIN_CLASSPATH) \
	  -Dtest.classpath=$(OUR_TEST_CLASSPATH) \
	  -Druntime.classpath="$(OUR_RUNTIME_CLASSPATH)"

	# Generate OSGi metadata for jython.jar
	bnd wrap --properties debian/jython.bnd --output dist/jython.jar dist/jython-dev.jar

	# Do not install the tests
	rm -rf dist/Lib/test

	# Embed the modules into the jar
	cd dist && zip -r jython.jar Lib/

override_dh_auto_clean:
	dh_auto_clean
	rm -rf extlibs
	rm -f $(DEBIAN_OUT)

override_jh_installlibs:
	jh_installlibs --version-strip="[+].*"

# libmariadb-java and libpostgresql-jdbc-java are part of Suggests
override_jh_depends:
	jh_depends -Xlibmariadb-java -Xlibpostgresql-jdbc-java

override_dh_installchangelogs:
	dh_installchangelogs -- NEWS