# ==============================================================================
# DIRECTORIES
# ==============================================================================
DIR_ROOT       := $(dir $(abspath $(MAKEFILE_LIST)))
DIR_SOURCES    := $(addprefix $(DIR_ROOT), source/)
DIR_BIN        := $(DIR_ROOT)

# ==============================================================================
# TARGET NAMES
# ==============================================================================
ifeq ($(OS),Windows_NT)
    TARGET_NAME    := $(shell powershell -Command "$$line = Get-Content CMakeLists.txt | Where-Object {$$_ -match '^project'}; if ($$line -match 'project\s*\x28(\w+)') { $$matches[1] }")
    LONG_NAME      := $(shell powershell -Command "$$line = Get-Content CMakeLists.txt | Where-Object {$$_ -match 'PROJECT_LONG_NAME'}; if ($$line -match '\"(.+)\"') { $$matches[1] }")
else
    TARGET_NAME    := $(shell awk '/^project/ {gsub(/[)(]/, " "); print $$2}' CMakeLists.txt)
    LONG_NAME      := $(shell grep 'PROJECT_LONG_NAME' CMakeLists.txt | sed 's/.*"\(.*\)".*/\1/')
endif

TARGET_FILE    := $(DIR_BIN)$(TARGET_NAME)
RELEASE_FOLDER := $(TARGET_NAME)_release
RELEASE_FILE   := $(RELEASE_FOLDER)/$(TARGET_NAME)

# Release file names
RAW_VERSION := $(shell echo $(VERSION) | sed 's/^v//')
WINDOWS_RELEASE := $(TARGET_NAME)-$(VERSION)-windows-x64.zip
MACOS_ARM_RELEASE := $(TARGET_NAME)-$(VERSION)-macos-arm64.dmg
MACOS_INTEL_RELEASE := $(TARGET_NAME)-$(VERSION)-macos-x64.dmg
LINUX_RELEASE := $(TARGET_NAME)-$(VERSION)-linux-x64.tar.gz
RPI_RELEASE := $(TARGET_NAME)-$(VERSION)-rpi-arm64.tar.gz
APP_NAME := $(LONG_NAME)

# ==============================================================================
# VERSION
# ==============================================================================
ifeq ($(OS),Windows_NT)
    VERSION := v$(shell powershell -Command "$$line = Get-Content CMakeLists.txt | Where-Object {$$_ -match '^project'}; if ($$line -match 'VERSION\s+([0-9.]+)') { $$matches[1] }")
else
    VERSION := v$(shell grep "^project" CMakeLists.txt | tr -cd 0-9.)
endif

# ==============================================================================
# SOURCE FILES
# ==============================================================================
# Note: Source files are now auto-discovered by CMake using GLOB_RECURSE
# No need to maintain this list manually anymore!

# ==============================================================================
# PLATFORM-SPECIFIC UTILITIES
# ==============================================================================
ifeq ($(OS),Windows_NT)
    RMFILE          := del /Q
    RMDIR           := rmdir /S /Q
    MKDIR           := mkdir
else
    RMFILE          := rm -f
    RMDIR           := rm -rf
    MKDIR           := mkdir -p
    UNAME_S         := $(shell uname -s)
endif

# ==============================================================================
# PACKING TOOL
# ==============================================================================
PACK_TOOL := tools/pack_resources/pack_resources

# ==============================================================================
# DEFAULT GOAL
# ==============================================================================
.DEFAULT_GOAL := all

.PHONY: pack_tool resources.pack

pack_tool:
	@$(MAKE) -C tools/pack_resources

resources.pack: pack_tool
	@echo "Creating resources.pack..."
	@./$(PACK_TOOL) data resources.pack

# ==============================================================================
# TARGETS
# ==============================================================================
.PHONY: all clean debug help backup

# ==============================================================================
# BUILD TARGETS (delegate to CMake)
# ==============================================================================

# Default target: build with CMake + resources
all: resources.pack $(TARGET_FILE)

$(TARGET_FILE):
	@cmake -B build -DCMAKE_BUILD_TYPE=Release
	@cmake --build build
	@echo "Build successful: $(TARGET_FILE)"

# Debug build
debug: resources.pack
	@cmake -B build -DCMAKE_BUILD_TYPE=Debug
	@cmake --build build
	@echo "Debug build successful: $(TARGET_FILE)"

# ==============================================================================
# RELEASE PACKAGING TARGETS
# ==============================================================================

# macOS Release (Apple Silicon)
.PHONY: macos_release
macos_release: pack_tool resources.pack
	@echo "Creating macOS release - Version: $(VERSION)"

	# Check/install create-dmg
	@command -v create-dmg >/dev/null || (echo "Installing create-dmg..." && brew install create-dmg)

	# Clean previous releases
	@$(RMDIR) "$(RELEASE_FOLDER)" 2>/dev/null || true
	@$(RMDIR) Frameworks 2>/dev/null || true
	@$(RMFILE) "$(MACOS_ARM_RELEASE)" 2>/dev/null || true

	# Create .app structure
	@$(MKDIR) "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Frameworks"
	@$(MKDIR) "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/MacOS"
	@$(MKDIR) "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Resources"
	@$(MKDIR) Frameworks

	# Copy resources.pack to Resources
	@cp resources.pack "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Resources/"
	@ditto release/frameworks/SDL3.xcframework/macos-arm64_x86_64/SDL3.framework "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Frameworks/SDL3.framework"
	@ditto release/frameworks/SDL3.xcframework/macos-arm64_x86_64/SDL3.framework Frameworks/SDL3.framework

	# Recreate framework symlinks (may be broken)
	@cd Frameworks/SDL3.framework && rm -f SDL3 Headers Resources && \
		ln -s Versions/Current/SDL3 SDL3 && \
		ln -s Versions/Current/Headers Headers && \
		ln -s Versions/Current/Resources Resources
	@cd Frameworks/SDL3.framework/Versions && rm -f Current && ln -s A Current
	@cd "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Frameworks/SDL3.framework" && rm -f SDL3 Headers Resources && \
		ln -s Versions/Current/SDL3 SDL3 && \
		ln -s Versions/Current/Headers Headers && \
		ln -s Versions/Current/Resources Resources
	@cd "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Frameworks/SDL3.framework/Versions" && rm -f Current && ln -s A Current

	@cp release/icon.icns "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Resources/"
	@cp release/Info.plist "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/"
	@cp LICENSE "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: LICENSE not found"
	@cp README.md "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: README.md not found"

	# Update Info.plist version
	@echo "Updating Info.plist with version $(RAW_VERSION)..."
	@sed -i '' '/<key>CFBundleShortVersionString<\/key>/{n;s|<string>.*</string>|<string>$(RAW_VERSION)</string>|;}' \
		"$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Info.plist"
	@sed -i '' '/<key>CFBundleVersion<\/key>/{n;s|<string>.*</string>|<string>$(RAW_VERSION)</string>|;}' \
		"$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Info.plist"

	# Compile for Apple Silicon using CMake
	@cmake -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_OSX_ARCHITECTURES=arm64
	@cmake --build build
	@cp $(TARGET_FILE) "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/MacOS/$(TARGET_NAME)"

	# Code sign
	@codesign --deep --force --sign - --timestamp=none "$(RELEASE_FOLDER)/$(APP_NAME).app" || echo "Warning: Code signing failed"

	# Create DMG
	@echo "Creating DMG for Apple Silicon..."
	@create-dmg \
		--volname "$(APP_NAME)" \
		--window-pos 200 120 \
		--window-size 720 300 \
		--icon-size 96 \
		--text-size 12 \
		--icon "$(APP_NAME).app" 278 102 \
		--icon "LICENSE" 441 102 \
		--icon "README.md" 604 102 \
		--app-drop-link 115 102 \
		--hide-extension "$(APP_NAME).app" \
		"$(MACOS_ARM_RELEASE)" \
		"$(RELEASE_FOLDER)" || true
	@echo "✓ macOS release created: $(MACOS_ARM_RELEASE)"

	# Cleanup
	@$(RMDIR) Frameworks
	@$(RMDIR) "$(RELEASE_FOLDER)"

# Linux Release
.PHONY: linux_release
linux_release: pack_tool resources.pack
	@echo "Creating Linux release - Version: $(VERSION)"
	@echo "Note: SDL3 must be installed on the target system (libsdl3-dev)"

	# Clean previous
	@$(RMDIR) "$(RELEASE_FOLDER)"
	@$(RMFILE) "$(LINUX_RELEASE)"

	# Create folder
	@$(MKDIR) "$(RELEASE_FOLDER)"

	# Copy resources
	@cp resources.pack "$(RELEASE_FOLDER)/"
	@cp LICENSE "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: LICENSE not found"
	@cp README.md "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: README.md not found"

	# Compile with CMake
	@cmake -B build -DCMAKE_BUILD_TYPE=Release
	@cmake --build build
	@cp $(TARGET_FILE) "$(RELEASE_FILE)"
	@strip -s -R .comment -R .gnu.version "$(RELEASE_FILE)" --strip-unneeded || strip "$(RELEASE_FILE)"

	# Package
	@tar -czf "$(LINUX_RELEASE)" -C "$(RELEASE_FOLDER)" .
	@echo "✓ Linux release created: $(LINUX_RELEASE)"

	# Cleanup
	@$(RMDIR) "$(RELEASE_FOLDER)"

# Windows Release (requires MinGW on Windows or cross-compiler on Linux)
.PHONY: windows_release
windows_release:
	@echo "Creating Windows release - Version: $(VERSION)"
	@echo "Note: This target should be run on Windows with MinGW or use windows_cross on Linux"

	# Clean previous
	@$(RMDIR) "$(RELEASE_FOLDER)"
	@$(RMFILE) "$(WINDOWS_RELEASE)"

	# Create folder
	@$(MKDIR) "$(RELEASE_FOLDER)"

	# Copy resources
	@cp -r resources "$(RELEASE_FOLDER)/"
	@cp release/dll/*.dll "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: DLLs not found"
	@cp LICENSE "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: LICENSE not found"
	@cp README.md "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: README.md not found"

	# Compile resource file
	@windres release/$(TARGET_NAME).rc -O coff -o release/$(TARGET_NAME).res 2>/dev/null || echo "Warning: windres failed"

	# Compile with CMake
	@cmake -B build -DCMAKE_BUILD_TYPE=Release
	@cmake --build build
	@cp $(TARGET_FILE).exe "$(RELEASE_FILE).exe" || cp $(TARGET_FILE) "$(RELEASE_FILE).exe"

	# Package
	@cd "$(RELEASE_FOLDER)" && zip -r ../$(WINDOWS_RELEASE) *
	@echo "✓ Windows release created: $(WINDOWS_RELEASE)"

	# Cleanup
	@$(RMDIR) "$(RELEASE_FOLDER)"

# Raspberry Pi Release (cross-compilation from Linux/macOS)
.PHONY: rpi_release
rpi_release:
	@echo "Creating Raspberry Pi ARM64 release - Version: $(VERSION)"
	@echo "Note: Requires aarch64-linux-gnu-g++ cross-compiler"

	# Check for cross-compiler
	@command -v aarch64-linux-gnu-g++ >/dev/null || (echo "Error: aarch64-linux-gnu-g++ not found" && exit 1)

	# Clean previous
	@$(RMDIR) "$(RELEASE_FOLDER)"
	@$(RMFILE) "$(RPI_RELEASE)"

	# Create folder
	@$(MKDIR) "$(RELEASE_FOLDER)"

	# Copy resources
	@cp -r resources "$(RELEASE_FOLDER)/"
	@cp LICENSE "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: LICENSE not found"
	@cp README.md "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: README.md not found"

	# Note: Cross-compilation with CMake is complex, would need toolchain file
	@echo "Warning: RPI cross-compilation requires manual setup with CMake toolchain file"
	@echo "Falling back to direct g++ compilation..."
	@aarch64-linux-gnu-g++ -std=c++20 -Wall -O2 -DLINUX_BUILD -DRPI_BUILD \
		-Isource -Ibuild \
		$$(find source/core source/game -name "*.cpp") source/main.cpp \
		-lSDL3 -o "$(RELEASE_FILE)" || echo "Error: Compilation failed"
	@aarch64-linux-gnu-strip -s -R .comment -R .gnu.version "$(RELEASE_FILE)" --strip-unneeded || true

	# Package
	@tar -czf "$(RPI_RELEASE)" -C "$(RELEASE_FOLDER)" .
	@echo "✓ Raspberry Pi release created: $(RPI_RELEASE)"

	# Cleanup
	@$(RMDIR) "$(RELEASE_FOLDER)"

# Windows Cross-compilation (from Linux/macOS)
.PHONY: windows_cross
windows_cross:
	@echo "Cross-compiling for Windows from $(UNAME_S) - Version: $(VERSION)"

	# Check for cross-compiler
	@command -v x86_64-w64-mingw32-g++ >/dev/null || (echo "Error: x86_64-w64-mingw32-g++ not found" && exit 1)

	# Clean previous
	@$(RMDIR) "$(RELEASE_FOLDER)"
	@$(RMFILE) "$(WINDOWS_RELEASE)"

	# Create folder
	@$(MKDIR) "$(RELEASE_FOLDER)"

	# Copy resources
	@cp -r resources "$(RELEASE_FOLDER)/"
	@cp release/dll/*.dll "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: DLLs not found in release/dll/"
	@cp LICENSE "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: LICENSE not found"
	@cp README.md "$(RELEASE_FOLDER)/" 2>/dev/null || echo "Warning: README.md not found"

	# Compile resource file
	@x86_64-w64-mingw32-windres release/$(TARGET_NAME).rc -O coff -o release/$(TARGET_NAME).res 2>/dev/null || echo "Warning: windres failed"

	# Cross-compile
	@echo "Compiling with MinGW cross-compiler..."
	@x86_64-w64-mingw32-g++ -std=c++20 -Wall -O2 -DWINDOWS_BUILD -DRELEASE_BUILD \
		-static-libstdc++ -static-libgcc -Wl,-subsystem,windows \
		-Isource -Ibuild \
		$$(find source/core source/game -name "*.cpp") source/main.cpp \
		release/$(TARGET_NAME).res \
		-lmingw32 -lSDL3 -o "$(RELEASE_FILE).exe" || echo "Error: Compilation failed"
	@x86_64-w64-mingw32-strip "$(RELEASE_FILE).exe" || true

	# Package
	@cd "$(RELEASE_FOLDER)" && zip -r ../$(WINDOWS_RELEASE) *
	@echo "✓ Windows cross-compiled release created: $(WINDOWS_RELEASE)"

	# Cleanup
	@$(RMDIR) "$(RELEASE_FOLDER)"

# Clean build artifacts
clean:
ifeq ($(OS),Windows_NT)
	@if exist $(call FixPath,$(TARGET_FILE).exe) $(RMFILE) $(call FixPath,$(TARGET_FILE).exe)
	@if exist $(call FixPath,$(TARGET_FILE)_debug.exe) $(RMFILE) $(call FixPath,$(TARGET_FILE)_debug.exe)
	@if exist build $(RMDIR) build
	@if exist $(RELEASE_FOLDER) $(RMDIR) $(RELEASE_FOLDER)
else
	@$(RMFILE) $(TARGET_FILE) $(TARGET_FILE)_debug
	@$(RMDIR) build $(RELEASE_FOLDER)
	@$(RMFILE) *.dmg *.zip *.tar.gz 2>/dev/null || true
	@$(RMFILE) resources.pack 2>/dev/null || true
	@$(MAKE) -C tools/pack_resources clean 2>/dev/null || true
endif
	@echo "Clean complete"

# Backup to remote server
backup:
	@echo "Backing up project to maverick:/home/sergio/git-backup/orni..."
	rsync -a --delete \
		--exclude='build/' \
		--exclude='*.o' \
		--exclude='*.exe' \
		--exclude='orni' \
		--exclude='orni_debug' \
		--exclude='*_release/' \
		$(DIR_ROOT) maverick:/home/sergio/git-backup/orni/
	@echo "Backup completed successfully"

# Help target
help:
	@echo "Available targets:"
	@echo ""
	@echo "Build:"
	@echo "  all               - Build the game (default, delegates to CMake)"
	@echo "  debug             - Build with debug symbols"
	@echo "  clean             - Remove build artifacts and release packages"
	@echo ""
	@echo "Release Packaging:"
	@echo "  macos_release     - Create macOS .app bundle + .dmg (Apple Silicon)"
	@echo "  linux_release     - Create Linux .tar.gz"
	@echo "  windows_release   - Create Windows .zip (requires MinGW on Windows)"
	@echo "  windows_cross     - Cross-compile Windows from Linux/macOS (requires MinGW)"
	@echo "  rpi_release       - Cross-compile for Raspberry Pi ARM64"
	@echo ""
	@echo "Other:"
	@echo "  backup            - Backup project to remote server"
	@echo "  help              - Show this help message"
	@echo ""
	@echo "Current configuration:"
	@echo "  Project:      $(LONG_NAME)"
	@echo "  Target:       $(TARGET_NAME)"
	@echo "  Version:      $(VERSION)"
	@echo "  Platform:     $(UNAME_S)"