#!/usr/bin/make -f
#
# Debian package build for PostIt (Yavsc desktop client).
#
# Pipeline:
#   1. Clone pazof/yavsc at POSTIT_GIT_TAG into a clean working
#      tree under build/yavsc-src.
#   2. dotnet publish src/PostIt/PostIt.Desktop — framework-
#      dependent (not self-contained), into build/postit-app.
#   3. Render the icon at the hicolor sizes from
#      src/PostIt/PostIt/Assets/Icon.png, plus the SVG as the
#      scalable form.
#   4. Stage everything under debian/tmp/ — the layout dh_install
#      expects:
#         /usr/lib/postit/           (managed assemblies)
#         /usr/bin/postit            (wrapper script)
#         /usr/share/applications/   (postit.desktop)
#         /usr/share/icons/hicolor/  (icons)
#   5. dh_install moves it all into debian/postit/ and the rest
#      of the dh_* helpers assemble the .deb.

POSTIT_GIT_URL ?= https://github.com/pazof/yavsc.git
POSTIT_GIT_TAG ?= 1.0.6
# Runtime identifier passed to `dotnet publish --runtime`. Override
# at build time for non-amd64 targets:
#   make deb POSTIT_RUNTIME=linux-arm64
POSTIT_RUNTIME ?= linux-x64
POSTIT_DESKTOP_PROJECT := src/PostIt/PostIt.Desktop/PostIt.Desktop.csproj
POSTIT_BUILD_DIR := $(CURDIR)/build
POSTIT_SRC_DIR := $(POSTIT_BUILD_DIR)/yavsc-src
POSTIT_TMP := $(CURDIR)/debian/tmp
POSTIT_TMP_LIB := $(POSTIT_TMP)/usr/lib/postit
POSTIT_TMP_BIN := $(POSTIT_TMP)/usr/bin
POSTIT_TMP_SHARE := $(POSTIT_TMP)/usr/share

ICON_SIZES := 16 32 48 64 128 256

%:
	dh $@

override_dh_auto_clean:
	rm -rf $(POSTIT_BUILD_DIR) $(POSTIT_TMP) $(CURDIR)/debian/changelog

override_dh_auto_build:
	# The rendered changelog (debian/changelog) is generated from
	# debian/changelog.in by the Makefile *before* dpkg-buildpackage
	# runs, because dpkg-buildpackage reads debian/changelog before
	# any rule (in dpkg-source --before-build) and would fail with
	# "changelog missing" if it were not present. If somebody invokes
	# dpkg-buildpackage directly without going through the Makefile
	# (rare, but cheap to guard against), render the changelog on
	# the fly from the current POSTIT_GIT_TAG so the package still
	# builds and ships the right version.
	if [ ! -f $(CURDIR)/debian/changelog ] && [ -f $(CURDIR)/debian/changelog.in ]; then \
	    sed 's/@VERSION@/$(POSTIT_GIT_TAG)/g' \
	        $(CURDIR)/debian/changelog.in > $(CURDIR)/debian/changelog; \
	fi
	# 1. Fetch the upstream source at POSTIT_GIT_TAG. The ref can
	#    be either a branch name (e.g. `main`) or a tag (e.g.
	#    `1.0.1-rc02`); `git fetch origin <ref>` handles both. The
	#    reference MUST exist on the configured POSTIT_GIT_URL
	#    remote (default: github.com/pazof/yavsc). If you are
	#    building from a tag that is only on your local clone
	#    (typical right after `git tag 1.0.1-rc02` and before
	#    `git push origin 1.0.1-rc02`), point POSTIT_GIT_URL at
	#    your local checkout:
	#        make POSTIT_GIT_URL=file:///home/paul/Workspace/yavsc \
	#             POSTIT_GIT_TAG=1.0.1-rc02
	mkdir -p $(POSTIT_BUILD_DIR)
	if [ ! -d $(POSTIT_SRC_DIR)/.git ]; then \
	    git init -q $(POSTIT_SRC_DIR); \
	    git -C $(POSTIT_SRC_DIR) remote add origin $(POSTIT_GIT_URL); \
	fi
	if ! git -C $(POSTIT_SRC_DIR) fetch --depth=1 origin $(POSTIT_GIT_TAG); then \
	    echo "" >&2; \
	    echo "  ERROR: POSTIT_GIT_TAG='$(POSTIT_GIT_TAG)' is not reachable from POSTIT_GIT_URL='$(POSTIT_GIT_URL)'." >&2; \
	    echo "  Either push the ref to the remote first (e.g. \`git push origin $(POSTIT_GIT_TAG)\`)" >&2; \
	    echo "  or override POSTIT_GIT_URL with a local path that has the ref, e.g." >&2; \
	    echo "      make POSTIT_GIT_URL=file:///home/paul/Workspace/yavsc POSTIT_GIT_TAG=$(POSTIT_GIT_TAG)" >&2; \
	    echo "" >&2; \
	    exit 128; \
	fi
	git -C $(POSTIT_SRC_DIR) checkout -q FETCH_HEAD

	# 2. Publish PostIt.Desktop for the host architecture.
	#    --self-contained false : rely on the system .NET
	#    runtime (declared in debian/control Depends:).
	#    -p:PublishReadyToRun=false : avoid R2R which inflates
	#    the binary for marginal startup gain on a desktop GUI.
	#    -p:DisableGitVersionTask=true : GitVersion.MsBuild cannot
	#    resolve the repo when we check out FETCH_HEAD (the working
	#    tree is in detached-HEAD state, which trips GitVersion's
	#    FindGitDir path detection). We instead stamp the assembly
	#    metadata manually from POSTIT_GIT_TAG below.
	#    -p:Version / -p:AssemblyVersion / -p:FileVersion / -p:InformationalVersion :
	#    substitute GitVersion's resolved values with values
	#    derived from the tag we are packaging. The consumer of
	#    the .deb can still query `dpkg-deb -f postit_*.deb Version`
	#    for the Debian package version; these MSBuild properties
	#    only show up in the managed assembly metadata (visible
	#    via `postit --version` once the WinExe embeds it).
	#
	#    Strip the pre-release suffix (e.g. -rc03) from
	#    POSTIT_GIT_TAG for AssemblyVersion/FileVersion, since
	#    those require strict major.minor.build.revision numerics.
	#    Version / InformationalVersion keep the full string with
	#    the suffix, which is what SemanticVersion consumers
	#    expect.
	$(eval POSTIT_ASSEMBLY_VERSION := $(shell echo $(POSTIT_GIT_TAG) | sed 's/-.*//'))
	dotnet publish $(POSTIT_SRC_DIR)/$(POSTIT_DESKTOP_PROJECT) \
	    -c Release \
	    --self-contained false \
	    --runtime $(POSTIT_RUNTIME) \
	    -p:PublishReadyToRun=false \
	    -p:DisableGitVersionTask=true \
	    -p:Version=$(POSTIT_GIT_TAG) \
	    -p:AssemblyVersion=$(POSTIT_ASSEMBLY_VERSION).0 \
	    -p:FileVersion=$(POSTIT_ASSEMBLY_VERSION).0 \
	    -p:InformationalVersion=$(POSTIT_GIT_TAG) \
	    -o $(POSTIT_BUILD_DIR)/postit-app


override_dh_auto_test:
	# No upstream test suite for PostIt.Desktop at this stage
	# (Yavsc.Org.Tests covers the web front, not the desktop
	# client). Build smoke is sufficient for the package.

override_dh_shlibdeps:
	# If a stage of arm64 libraries has been extracted into
	# $(ARM64_STAGE)/usr/lib/aarch64-linux-gnu/ (by the
	# upstream fetch-arm64-libs.sh script wired into the
	# Forgejo Actions workflow), point dpkg-shlibdeps at it
	# with -l so it can resolve ELF NEEDED entries from the
	# arm64 binaries (libc.so.6, libstdc++.so.6, etc.) without
	# installing arm64 on the amd64 host.
	if [ -n "$(ARM64_STAGE)" ] && [ -d "$(ARM64_STAGE)/usr/lib/aarch64-linux-gnu" ]; then \
	    echo "  --> dpkg-shlibdeps: using arm64 stage at $(ARM64_STAGE)"; \
	    dh_shlibdeps -- -l"$(ARM64_STAGE)/usr/lib/aarch64-linux-gnu"; \
	else \
	    dh_shlibdeps -- \
	        --warnings=0 \
	        -l"$(DEB_HOST_MULTIARCH_DIR)" 2>/dev/null || true; \
	fi

override_dh_strip:
	# dh_strip disabled entirely. See MEMORY.md / AGENTS.md for the
	# rationale (cross-compiled native .so via NuGet from Avalonia
	# deps cannot be parsed by amd64 objcopy/strip).


define stage_postit
	mkdir -p $(POSTIT_TMP_LIB)
	cp -r $(POSTIT_BUILD_DIR)/postit-app/. $(POSTIT_TMP_LIB)/

	mkdir -p $(POSTIT_TMP_BIN)
	cp $(CURDIR)/debian/postit.wrapper $(POSTIT_TMP_BIN)/postit
	chmod 0755 $(POSTIT_TMP_BIN)/postit

	mkdir -p $(POSTIT_TMP_SHARE)/applications
	cp $(CURDIR)/debian/postit.desktop \
	    $(POSTIT_TMP_SHARE)/applications/postit.desktop

	mkdir -p $(POSTIT_TMP_SHARE)/icons/hicolor/scalable/apps
	cp $(POSTIT_SRC_DIR)/src/PostIt/PostIt/Assets/yavsc-logo.svg \
	    $(POSTIT_TMP_SHARE)/icons/hicolor/scalable/apps/postit.svg

	for size in $(ICON_SIZES); do \
	    mkdir -p $(POSTIT_TMP_SHARE)/icons/hicolor/$${size}x$${size}/apps; \
	    convert $(POSTIT_SRC_DIR)/src/PostIt/PostIt/Assets/Icon.png \
	        -resize $${size}x$${size} \
	        $(POSTIT_TMP_SHARE)/icons/hicolor/$${size}x$${size}/apps/postit.png; \
	done
endef

override_dh_install:
	$(call stage_postit)
	dh_install