# ==============================================================================
# Makefile per a Shadertoy
#
# Tres targets:
#   make            → Release (cmake)
#   make debug      → Debug (cmake)
#   make release    → Release + empaquetat per a distribució a dist/
#
# El SO es detecta automàticament. La compilació sempre passa per CMake.
# ==============================================================================

PROJECT  := shadertoy
APP_NAME := Shadertoy
DIR_ROOT := $(dir $(abspath $(MAKEFILE_LIST)))
BUILDDIR := build
DIST_DIR := dist
RELEASE_FOLDER := $(DIST_DIR)/_tmp

# ==============================================================================
# DETECCIÓ DE PLATAFORMA + GENERADOR CMAKE + JOBS
# ==============================================================================
ifeq ($(OS),Windows_NT)
    # MSYS2/Git Bash usa /dev/null, cmd.exe pur usa NUL.
    ifneq ($(MSYSTEM),)
        NULDEV := /dev/null
    else
        NULDEV := NUL
    endif
    JOBS      ?= $(NUMBER_OF_PROCESSORS)
    HAS_NINJA := $(shell ninja --version 2>$(NULDEV))
    ifneq ($(HAS_NINJA),)
        CMAKE_GEN := -G "Ninja"
    else
        CMAKE_GEN := -G "MinGW Makefiles"
    endif
    UNAME_S   := Windows
    SHELL     := cmd.exe
else
    NULDEV    := /dev/null
    JOBS      ?= $(shell nproc 2>/dev/null || echo 4)
    CMAKE_GEN :=
    UNAME_S   := $(shell uname -s)
endif

# ==============================================================================
# VERSIÓ (data, format YYYY.MM.DD)
# ==============================================================================
ifeq ($(OS),Windows_NT)
    VERSION := $(shell powershell -Command "Get-Date -Format 'yyyy.MM.dd'")
else
    VERSION := $(shell date +%Y.%m.%d)
endif

# ==============================================================================
# NOMS DELS ARTEFACTES DE RELEASE
# ==============================================================================
WINDOWS_RELEASE             := $(DIST_DIR)/$(PROJECT)-$(VERSION)-win32-x64.zip
MACOS_APPLE_SILICON_RELEASE := $(DIST_DIR)/$(PROJECT)-$(VERSION)-macos-apple-silicon.dmg
LINUX_RELEASE               := $(DIST_DIR)/$(PROJECT)-$(VERSION)-linux.tar.gz

.PHONY: all debug release clean help _windows_release _macos_release _linux_release

# ==============================================================================
# COMPILACIÓ (delegada a CMake)
# ==============================================================================
all:
	@cmake $(CMAKE_GEN) -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release
	@cmake --build $(BUILDDIR) -j$(JOBS)

debug:
	@cmake $(CMAKE_GEN) -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Debug
	@cmake --build $(BUILDDIR) -j$(JOBS)

# ==============================================================================
# RELEASE (auto-dispatch per SO)
# ==============================================================================
release:
ifeq ($(OS),Windows_NT)
	@"$(MAKE)" _windows_release
else
ifeq ($(UNAME_S),Darwin)
	@$(MAKE) _macos_release
else
	@$(MAKE) _linux_release
endif
endif

clean:
	@rm -rf $(BUILDDIR) $(DIST_DIR)

# ==============================================================================
# RELEASE LINUX
# ==============================================================================
_linux_release:
	@echo "Creant release per a Linux - Versió: $(VERSION)"
	@cmake $(CMAKE_GEN) -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release
	@cmake --build $(BUILDDIR) -j$(JOBS)
	@mkdir -p $(DIST_DIR)
	@rm -rf $(RELEASE_FOLDER)
	@mkdir -p $(RELEASE_FOLDER)
	@cp -R data $(RELEASE_FOLDER)/
	@cp LICENSE $(RELEASE_FOLDER)/
	@cp README.md $(RELEASE_FOLDER)/
	@cp $(PROJECT) $(RELEASE_FOLDER)/
	@strip -s -R .comment -R .gnu.version $(RELEASE_FOLDER)/$(PROJECT) --strip-unneeded
	@rm -f $(LINUX_RELEASE)
	@tar -czf $(LINUX_RELEASE) -C $(RELEASE_FOLDER) .
	@echo "Release creat: $(LINUX_RELEASE)"
	@rm -rf $(RELEASE_FOLDER)

# ==============================================================================
# RELEASE MACOS (Apple Silicon, .dmg amb .app bundle)
# ==============================================================================
_macos_release:
	@echo "Creant release per a macOS - Versió: $(VERSION)"
	@command -v create-dmg >/dev/null 2>&1 || { \
		echo "Falta create-dmg. Instal·la amb: brew install create-dmg"; \
		exit 1; \
	}
	@cmake -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release -DMACOS_BUNDLE=ON -DCMAKE_OSX_ARCHITECTURES=arm64 -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0
	@cmake --build $(BUILDDIR) -j$(JOBS)
	@mkdir -p $(DIST_DIR)
	@rm -rf $(RELEASE_FOLDER)
	@rm -f tmp.dmg "$(MACOS_APPLE_SILICON_RELEASE)" $(DIST_DIR)/rw.*
	@mkdir -p "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Frameworks"
	@mkdir -p "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/MacOS"
	@mkdir -p "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Resources"
	@cp -R data "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Resources/"
	@cp -R release/macos/frameworks/SDL3.xcframework/macos-arm64_x86_64/SDL3.framework "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Frameworks/"
	@cp release/icons/icon.icns "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/Resources/"
	@cp release/macos/Info.plist "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/"
	@cp $(PROJECT) "$(RELEASE_FOLDER)/$(APP_NAME).app/Contents/MacOS/$(PROJECT)"
	@cp LICENSE "$(RELEASE_FOLDER)/"
	@cp README.md "$(RELEASE_FOLDER)/"
	@RAW_VERSION=$$(echo "$(VERSION)" | sed 's/^v//'); \
		sed -i '' '/<key>CFBundleShortVersionString<\/key>/{n;s|<string>.*</string>|<string>'"$$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"
	@codesign --deep --force --sign - --timestamp=none "$(RELEASE_FOLDER)/$(APP_NAME).app"
	@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_APPLE_SILICON_RELEASE)" \
		"$(RELEASE_FOLDER)" || true
	@echo "Release creat: $(MACOS_APPLE_SILICON_RELEASE)"
	@rm -rf $(RELEASE_FOLDER)
	@rm -f $(DIST_DIR)/rw.*

# ==============================================================================
# RELEASE WINDOWS (.zip amb DLLs)
# ==============================================================================
_windows_release:
	@echo off
	@echo Creant release per a Windows - Versió: $(VERSION)
	@cmake $(CMAKE_GEN) -S . -B $(BUILDDIR) -DCMAKE_BUILD_TYPE=Release
	@cmake --build $(BUILDDIR) -j$(JOBS)
	@powershell -Command "if (-not (Test-Path '$(DIST_DIR)')) {New-Item '$(DIST_DIR)' -ItemType Directory | Out-Null}"
	@powershell -Command "if (Test-Path '$(RELEASE_FOLDER)') {Remove-Item '$(RELEASE_FOLDER)' -Recurse -Force}"
	@powershell -Command "New-Item '$(RELEASE_FOLDER)' -ItemType Directory | Out-Null"
	@powershell -Command "Copy-Item -Path 'data' -Destination '$(RELEASE_FOLDER)' -Recurse"
	@powershell -Command "Copy-Item 'LICENSE' -Destination '$(RELEASE_FOLDER)'"
	@powershell -Command "Copy-Item 'README.md' -Destination '$(RELEASE_FOLDER)'"
	@powershell -Command "Copy-Item 'release\windows\dll\*.dll' -Destination '$(RELEASE_FOLDER)'"
	@powershell -Command "Copy-Item -Path '$(PROJECT).exe' -Destination '$(RELEASE_FOLDER)/$(APP_NAME).exe'"
	@strip -s -R .comment -R .gnu.version "$(RELEASE_FOLDER)/$(APP_NAME).exe" --strip-unneeded
	@powershell -Command "if (Test-Path '$(WINDOWS_RELEASE)') {Remove-Item '$(WINDOWS_RELEASE)'}"
	@powershell -Command "Compress-Archive -Path '$(RELEASE_FOLDER)/*' -DestinationPath '$(WINDOWS_RELEASE)'"
	@echo Release creat: $(WINDOWS_RELEASE)
	@powershell -Command "Remove-Item '$(RELEASE_FOLDER)' -Recurse -Force"

# ==============================================================================
# AJUDA
# ==============================================================================
help:
	@echo "Makefile per a $(PROJECT)"
	@echo ""
	@echo "  make            Compilar Release (cmake)"
	@echo "  make debug      Compilar Debug (cmake)"
	@echo "  make release    Compilar + empaquetar per a distribució a $(DIST_DIR)/"
	@echo "  make clean      Esborrar $(BUILDDIR)/ i $(DIST_DIR)/"
	@echo ""
	@echo "  Versió actual: $(VERSION)"