cmake_minimum_required(VERSION 3.25.1)
project(powerplay)

# Options below are laid out so that running cmake with all "OFF" results in the "release" / "user" build

option(RTC                  "Should the build compile with runtime checks enabled (asserts, asan, etc.)         - REQUIRES CRTLIB ON"   OFF)
option(ASAN                 "Should the build compile with the address sanitizer enabled (asserts, asan, etc.)  - REQUIRES CRTLIB ON"   OFF)
option(CRTLIB               "Should the build link with the CRTLIB"                                                                     OFF)
option(DEBINFO              "Should the build compile with debug info"                                                                  OFF)
option(DEVELOPER            "Should the build compile with developer mode enabled"                                                      OFF)
option(PROFILING            "Should the build compile with profiling enabled                                    - REQUIRES CRTLIB ON"   OFF)
option(UNOPTIMIZED          "Should the build compile with optimization disabled"                                                       OFF)

################################################################################
# Source files
################################################################################

# Glob source files
file(GLOB_RECURSE sources CONFIGURE_DEPENDS src/*.c src/*.cpp src/*.h)

# Filter platform specific
list(FILTER sources EXCLUDE REGEX "sys_|renderer_|playback_|mp3_|ttf_")
if(PLATFORM_WIN32)
    set(sources ${sources} src/sys_win32.c)
    set(sources ${sources} src/renderer_d3d11.c)
    set(sources ${sources} src/playback_wasapi.c)
    set(sources ${sources} src/mp3_mmf.c)
    set(sources ${sources} src/ttf_dwrite.cpp)
    set(sources ${sources} .natvis)
endif()

# Add tracy
list(FILTER sources EXCLUDE REGEX "third_party")
if(PROFILING)
    set(sources ${sources} src/third_party/tracy/TracyClient.cpp)
endif()

list(FILTER sources EXCLUDE REGEX "WIP")

################################################################################
# Resource embedding
################################################################################

set(inc_dependencies "")

# Only archive & embed "res" dir if not compiling a developer build
if(NOT DEVELOPER)
    # Generate resource archive
    set(resource_archive_path "${CMAKE_BINARY_DIR}/res.tar")
    file(GLOB_RECURSE resource_sources CONFIGURE_DEPENDS ${CMAKE_SOURCE_DIR}/res/*)
    add_custom_command(
        OUTPUT ${resource_archive_path}
        COMMAND cmake -E tar cvf ${resource_archive_path} .
        DEPENDS ${resource_sources}
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/res
    )
    list(APPEND inc_dependencies ${resource_archive_path})
endif()

# Generate shaders archive
set(shaders_archive_path "${CMAKE_BINARY_DIR}/shaders.tar")
file(GLOB_RECURSE shader_sources CONFIGURE_DEPENDS ${CMAKE_SOURCE_DIR}/src/shaders/*)
add_custom_command(
    OUTPUT ${shaders_archive_path}
    COMMAND cmake -E tar cvf ${shaders_archive_path} .
    DEPENDS ${shader_sources}
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/src/shaders
)
list(APPEND inc_dependencies ${shaders_archive_path})

set_source_files_properties(src/inc.c OBJECT_DEPENDS "${inc_dependencies}")

################################################################################
# RC file (windows)
################################################################################

set(rc_res_sources "")
if(PLATFORM_WIN32)
    set(RC_PATH "${CMAKE_BINARY_DIR}/rc.rc")
    set(RC_RES_PATH "${CMAKE_BINARY_DIR}/rc.res")

    # Add icon resource to .rc
    set(ICON_SOURCE_PATH "${CMAKE_SOURCE_DIR}/icon.ico")
    set(ICON_COPY_PATH "${CMAKE_BINARY_DIR}/icon.ico")
    if(EXISTS ${ICON_SOURCE_PATH})
        # Copy icon to output dir
        add_custom_command(
            OUTPUT ${ICON_COPY_PATH}
            COMMAND ${CMAKE_COMMAND} -E copy ${ICON_SOURCE_PATH} ${ICON_COPY_PATH}
            DEPENDS ${ICON_SOURCE_PATH}
            WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
        )

        # Insert icon into .rc
        add_custom_command(
            OUTPUT ${RC_PATH}
            COMMAND break > ${RC_PATH}
            COMMAND echo IDI_ICON ICON DISCARDABLE icon.ico >> ${RC_PATH}
            DEPENDS ${ICON_COPY_PATH}
            WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
        )

        # Compile rc.rc -> rc.res
        add_custom_command(
            OUTPUT ${RC_RES_PATH}
            COMMAND llvm-rc ${RC_PATH}
            DEPENDS ${ICON_COPY_PATH} ${RC_PATH}
            WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
        )
        add_custom_target(build_rc_res ALL DEPENDS ${RC_RES_PATH})

        # Add to list of res_sources
        set(rc_res_sources ${rc_res_sources} ${RC_RES_PATH})
    endif()
endif()

################################################################################
# Executable
################################################################################

set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)

# Add executable
add_executable(powerplay_exe ${sources})
set_target_properties(
    powerplay_exe PROPERTIES
    C_STANDARD 99
    OUTPUT_NAME "PowerPlay.exe"
)

# Add precompiled header
target_precompile_headers(powerplay_exe PRIVATE src/common.h)

################################################################################
# Compiler flags
################################################################################

# TODO:
# Enable -
# -Wconversion \
# -Wno-sign-conversion \

set(COMPILER_WARNINGS " \
-Weverything -Werror \
-Wno-unused-macros -Wno-gnu-zero-variadic-macro-arguments -Wno-documentation \
-Wno-old-style-cast \
-Wno-conversion -Wno-sign-conversion -Wno-declaration-after-statement -Wno-extra-semi \
-Wno-extra-semi-stmt -Wno-bad-function-cast -Wno-class-varargs \
-Wno-unreachable-code-break -Wno-cast-align -Wno-float-equal \
-Wno-zero-as-null-pointer-constant -Wno-cast-qual -Wno-missing-noreturn \
-Wno-missing-field-initializers -Wno-missing-braces -Wno-initializer-overrides \
-Wno-c99-extensions -Wno-c++98-compat-pedantic -Wno-c++98-compat \
-Wno-switch-enum -Wno-switch-default \
-Wno-reserved-identifier -Wno-reserved-macro-identifier \
-Wno-unsafe-buffer-usage \
")
# -Wno-unused-variable -Wno-unused-but-set-variable -Wno-unused-parameter

set(COMPILER_FLAGS "
-fno-strict-aliasing \
-fno-finite-loops \
-fwrapv \
-msse4.2 \
")

set(LINKER_FLAGS " \
-fuse-ld=lld-link \
${rc_res_sources} \
-fno-strict-aliasing \
-fno-finite-loops \
-fwrapv \
-msse4.2 \
")

# RTC (Runtime checks)
if (RTC)
    if (NOT CRTLIB)
        message(FATAL_ERROR "CRTLIB (C runtime library) Must be enabled when compiling with RTC (runtime checks)")
    endif()
    # Enable UBSan
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -fsanitize=undefined -fsanitize-trap=all -DRTC=1")
    # set(COMPILER_FLAGS "${COMPILER_FLAGS} -fsanitize=undefined -DRTC=1")
endif()

# CRTLIB (C runtime library)
if (CRTLIB)
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -DCRTLIB=1")
else()
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -mno-stack-arg-probe -fno-builtin -nostdlib")
endif()

# Optimization
if (UNOPTIMIZED)
    set(COMPILER_FLAGS "${COMPILER_FLAGS}  -O0 -DUNOPTIMIZED=1")
else()
    set(COMPILER_FLAGS "${COMPILER_FLAGS}  -O3 -flto")
endif()

# Debug info
if (DEBINFO)
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -g -DDEBINFO=1")
endif()

# ASAN
if (ASAN)
    if (NOT CRTLIB)
        message(FATAL_ERROR "CRTLIB (C runtime library) Must be enabled when compiling with ASAN")
    endif()
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -fsanitize=address -DASAN=1")
endif()

# Developer mode
if(DEVELOPER)
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -DDEVELOPER=1")
endif()

# Profiling
if(PROFILING)
    if (NOT CRTLIB)
        message(FATAL_ERROR "CRTLIB (C runtime library) Must be enabled when compiling with PROFILING")
    endif()
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -DPROFILING=1")
    # Tracy flags
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -DTRACY_ENABLE=1")
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -DTRACY_NO_SAMPLING=1")
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -DTRACY_NO_SYSTEM_TRACING=1")
    set(COMPILER_FLAGS "${COMPILER_FLAGS} -DTRACY_NO_CALLSTACK=1")
    # Disable warnings when compiling tracy client
    set(COMPILER_WARNINGS "-Wno-everything")
endif()

set(CMAKE_C_FLAGS "${COMPILER_FLAGS} ${COMPILER_WARNINGS} -std=c99")
set(CMAKE_CXX_FLAGS "${COMPILER_FLAGS} ${COMPILER_WARNINGS} -std=c++14")
set(CMAKE_EXE_LINKER_FLAGS "${COMPILER_FLAGS} ${LINKER_FLAGS}")