# This file contains the build system commands configuration
# and environment variables
include mk/config.mk

# Build system dependencies
include mk/depends.mk

# Delete a target's output file if its recipe exits with a non-zero status.
# Without this, a partially-written artifact (e.g. a build that died mid-link,
# a cookbook crash leaving a corrupt pkgar) survives as "up to date" and Make
# skips rebuilding it on the next run — producing silently wrong output.
# This is a global setting; it applies to every file target in this Makefile
# and every target defined by the mk/*.mk fragments included below.
.DELETE_ON_ERROR:

# Make's default shell is /bin/sh without -e. Recipes rely on `&&` chaining
# for sequence safety, which is correct but fragile when an author forgets a
# chain. Forcing -e would be the safer default but would change semantics for
# existing recipes that depend on the `|| true` idiom for optional cleanup.
# We instead rely on .DELETE_ON_ERROR above + per-recipe `&&` chains + the
# cookbook Rust binary's own Result-based error propagation.
#
# If a future audit confirms no recipe depends on shell-level error tolerance,
# adding `.SHELLFLAGS := -euo pipefail -c` here would be the next hardening.

all: lint-config $(BUILD)/harddrive.img

# Post-build validation gate. Runs init-service checks, file-ownership checks,
# and config-vs-package collision detection against the freshly built image.
# This is a MANDATORY part of `make all` — a build that produces a broken image
# (init services pointing at missing binaries, config overrides that will be
# silently overwritten by package staging, file ownership conflicts) is not a
# successful build even if the image file exists.
#
# Escape hatch: REDBEAR_NO_VALIDATE=1 skips the entire validation chain.
# Use only when you understand why validation is failing and have a separate
# plan to fix it. The collision-detection component has its own finer-grained
# escape hatch (REDBEAR_COLLISIONS_WARN=1) that downgrades strict failures to
# warnings while still running the rest of the gate.
ifneq ($(REDBEAR_NO_VALIDATE),1)
all: validate
endif

# ── Red Bear OS Build Cache (OBLIGATORY) ─────────────────────────────────
# Cache sync is a mandatory part of every successful build.
# The git-tracked cache survives make clean, make distclean, and git clone.
#
# Flow:
#   make all → cache-restore (if needed) → build → cache-sync → cache-commit
#
# Commands:
#   make cache-sync         Sync built → git cache (manual)
#   make cache-commit       Sync + git commit (manual)
#   make cache-restore      Restore from git cache
#   make cache-status       Compare cache vs build state

CACHE_SYNC  = local/scripts/cache-sync.sh
CACHE_SAVE  = local/scripts/snapshot-cache.sh
CACHE_RESTORE = local/scripts/restore-cache.sh

cache-sync:
	@bash $(CACHE_SYNC)

cache-commit:
	@bash $(CACHE_SYNC) --commit

cache-restore:
	@echo "Red Bear: restoring from git-tracked cache..."
	@bash $(CACHE_SYNC) --restore
	@if ls local/cache/rbos-cache-* >/dev/null 2>&1; then \
		echo "Red Bear: restoring recipe stage artifacts from snapshot..."; \
		bash $(CACHE_RESTORE); \
		echo "Red Bear: verifying cache integrity..."; \
		bash $(CACHE_RESTORE) --verify || { \
			echo "Red Bear: \033[1;31;49mCACHE INTEGRITY CHECK FAILED\033[0m — restored artifacts may be incomplete."; \
			echo "The build may produce incorrect results. Inspect local/cache/ and re-run snapshot-cache.sh if needed."; \
			exit 1; \
		}; \
	else \
		echo "Red Bear: no cache snapshot found (first build or cache purged) — full build required"; \
	fi

cache-save:
	@bash $(CACHE_SAVE)

cache-save-essential:
	@bash $(CACHE_SAVE) --essential

cache-verify:
	@bash $(CACHE_RESTORE) --verify

# Phase J / Improvement C: verify that all Cargo [patch]
# sections in the local sources' Cargo.toml files resolve
# to the expected local fork paths. Run after `make all`
# to confirm Phase J end-to-end. Returns non-zero exit on
# any unresolved patch.
verify-patches:
	@bash local/scripts/check-cargo-patches.sh

# Phase I: also run the file-level patch check
verify-file-patches:
	@bash local/scripts/check-unwired-patches.sh --strict

# Verify everything: file-level patches + Cargo [patch] sections
verify-all: verify-file-patches verify-patches

cache-list:
	@bash $(CACHE_SAVE) --list

cache-status:
	@bash $(CACHE_SYNC) --status

# Obligatory cache pipeline — runs before AND after every build
cache-auto:
	@# ── BEFORE BUILD: restore cache if target is empty ──
	@if [ ! -f $(BUILD)/repo.tag ]; then \
		if ls local/cache/pkgar/*/stage.pkgar >/dev/null 2>&1; then \
			echo "Red Bear: restoring build cache..."; \
			bash $(CACHE_SYNC) --restore; \
		fi; \
	fi
	@# ── AFTER BUILD: sync cache back to git-tracked storage ──
	@if [ -f $(BUILD)/harddrive.img ]; then \
		echo "Red Bear: syncing build cache..."; \
		bash $(CACHE_SYNC); \
		echo "Red Bear: committing cache to git..."; \
		bash $(CACHE_SYNC) --commit 2>/dev/null || echo "Red Bear: cache commit skipped (no changes or not in git repo)"; \
	fi

$(BUILD)/harddrive.img: cache-auto

live:
	-$(FUMOUNT) $(BUILD)/filesystem/ || true
	-$(FUMOUNT) /tmp/redbear_installer/ || true
	rm -f $(LIVE_ISO) $(LIVE_IMG) $(LIVE_BOOTLOADER) $(LIVE_IPXE)
	$(MAKE) $(LIVE_ISO)

popsicle: $(LIVE_ISO)
	popsicle-gtk $(LIVE_ISO)

image:
	-$(FUMOUNT) $(BUILD)/filesystem/ || true
	-$(FUMOUNT) /tmp/redbear_installer/ || true
	rm -f $(BUILD)/harddrive.img $(LIVE_ISO) $(LIVE_IMG) $(LIVE_BOOTLOADER) $(LIVE_IPXE)
	$(MAKE) all

rebuild:
	-$(FUMOUNT) $(BUILD)/filesystem/ || true
	-$(FUMOUNT) /tmp/redbear_installer/ || true
	rm -rf $(BUILD)/repo.tag $(BUILD)/harddrive.img $(LIVE_ISO) $(LIVE_IMG) $(LIVE_BOOTLOADER) $(LIVE_IPXE)
	$(MAKE) all

# To tell that it's not safe
# to execute the cookbook binary
NOT_ON_PODMAN?=0

clean:
ifeq ($(PODMAN_BUILD),1)
ifneq ("$(wildcard $(CONTAINER_TAG))","")
	$(PODMAN_RUN) make $@
else
	$(info will not run cookbook clean as container is not built — run 'make container' first to build the Podman image, or set PODMAN_BUILD=0 in .config for a native build)
	$(MAKE) clean PODMAN_BUILD=0 NOT_ON_PODMAN=1 SKIP_CHECK_TOOLS=1
endif # CONTAINER_TAG
else
ifneq ($(NOT_ON_PODMAN),1)
	$(MAKE) repo_clean
	-$(FUMOUNT) $(BUILD)/filesystem/ || true
	-$(FUMOUNT) /tmp/redbear_installer/ || true
endif # NOT_ON_PODMAN
	rm -rf repo
	rm -rf $(BUILD) $(PREFIX)
	$(MAKE) fstools_clean
endif # PODMAN_BUILD

# distclean: removes build artifacts, toolchain, and upstream source trees.
# local/ overlay source trees are PROTECTED — the repo binary ALWAYS refuses
# to unfetch local overlay recipes (they are internal Red Bear subprojects
# with no upstream). This is unconditional: no env var or flag can override it.
# This is the safe default for Red Bear OS. local/ is NEVER deleted.
distclean:
ifneq ($(REDBEAR_RELEASE),)
	$(error distclean is disabled in release mode (REDBEAR_RELEASE=$(REDBEAR_RELEASE)). Sources are immutable. Use: make clean (build artifacts only, safe))
endif
ifeq ($(PODMAN_BUILD),1)
ifneq ("$(wildcard $(CONTAINER_TAG))","")
	$(PODMAN_RUN) make $@
else
	$(info will not run cookbook unfetch as container is not built — run 'make container' first to build the Podman image, or set PODMAN_BUILD=0 in .config for a native build)
	$(MAKE) distclean PODMAN_BUILD=0 NOT_ON_PODMAN=1 SKIP_CHECK_TOOLS=1
endif # CONTAINER_TAG
else
ifneq ($(NOT_ON_PODMAN),1)
	$(info ==> distclean: cleaning build artifacts and upstream source trees)
	$(info ==> local/ overlay sources are PROTECTED and will NOT be deleted)
	$(MAKE) fetch_clean
endif # NOT_ON_PODMAN
	$(MAKE) clean NOT_ON_PODMAN=1
endif # PODMAN_BUILD

# distclean-nuclear: now a no-op for local/ recipes — local/ sources are
# unconditionally immutable. This target remains for compatibility but
# behaves identically to distclean. Use rm -rf directly if you really
# want to delete local/ sources (NOT recommended — local/ is internal).
distclean-nuclear:
ifeq ($(PODMAN_BUILD),1)
	$(info distclean-nuclear is not supported in Podman mode; use native build)
else
	$(warning !! distclean-nuclear is a no-op for local/ recipes; local/ is immutable)
	$(MAKE) fetch_clean
	$(MAKE) clean NOT_ON_PODMAN=1
endif # PODMAN_BUILD

pull:
	git pull
	rm -f $(FSTOOLS_TAG)

repo: $(BUILD)/repo.tag

repo_clean: c.--all

fetch_clean: u.--all

# Podman build recipes and vars
include mk/podman.mk

# Disk Imaging and Cookbook tools
include mk/fstools.mk

# Cross compiler recipes
include mk/prefix.mk

# Repository maintenance
include mk/repo.mk

# Disk images
include mk/disk.mk

# Emulation recipes
include mk/qemu.mk
include mk/virtualbox.mk

# CI
include mk/ci.mk

include mk/redbear.mk

# Ensure Red Bear OS integration runs before repo cook and disk image creation
$(BUILD)/harddrive.img: $(REDBEAR_TAG)
$(LIVE_ISO): $(REDBEAR_TAG)
$(REPO_TAG): $(REDBEAR_TAG)

env: prefix FORCE $(CONTAINER_TAG)
ifeq ($(PODMAN_BUILD),1)
	$(PODMAN_RUN) make $@
else
	export PATH="$(PREFIX_PATH):$$PATH" && \
	bash
endif

setenv: FORCE
	@echo export ARCH='$(ARCH)'
	@echo export BOARD='$(BOARD)'
	@echo export CONFIG_NAME='$(CONFIG_NAME)'
	@echo BUILD='$(BUILD)'

export RUST_GDB=gdb-multiarch # Necessary when debugging for another architecture than the host
GDB_KERNEL_FILE=recipes/core/kernel/target/$(TARGET)/build/kernel.sym
gdb: FORCE
	rust-gdb $(GDB_KERNEL_FILE) --eval-command="target remote :1234"

# This target allows debugging a userspace application without requiring gdbserver running inside
# the VM. Because gdb doesn't know when the userspace application is scheduled by the kernel and as
# it stops the entire VM rather than just the userspace application that the user wants to debug,
# connecting to a gdbserver running inside the VM is highly encouraged when possible. This target
# should only be used when the application to debug runs early during boot before the network stack
# has started or you need to debug the interaction between the application and the kernel.
# tl;dr: DO NOT USE THIS TARGET UNLESS YOU HAVE TO
gdb-userspace: FORCE
	rust-gdb $(GDB_APP_FILE) --eval-command="add-symbol-file $(GDB_KERNEL_FILE)" --eval-command="target remote :1234"

# An empty target
FORCE:

# Wireshark
wireshark: FORCE
	wireshark $(BUILD)/network.pcap
packages-sync: ; @bash local/scripts/sync-packages.sh
packages-list: ; @ls -la Packages/*.pkgar 2>/dev/null | wc -l && echo "pkgar files in Packages/"
validate-patches:
	@bash local/scripts/validate-patches.sh