cmake_minimum_required(VERSION 3.16)
project(orni VERSION 0.8.1 LANGUAGES CXX)

# Info del projecte (font de veritat per a project.h)
set(PROJECT_LONG_NAME "Orni Attack")
set(PROJECT_COPYRIGHT "© 2026 JailDesigner")

if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
    set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
endif()

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

# --- GENERACIÓ DEL project.h AMB GIT HASH ---
# Si GIT_HASH ve passat des de fora (Makefile), l'usem; si no, el resolem amb git.
if(NOT DEFINED GIT_HASH OR GIT_HASH STREQUAL "")
    find_package(Git QUIET)
    if(GIT_FOUND)
        execute_process(
            COMMAND ${GIT_EXECUTABLE} rev-parse --short=7 HEAD
            WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
            OUTPUT_VARIABLE GIT_HASH
            OUTPUT_STRIP_TRAILING_WHITESPACE
            ERROR_QUIET
        )
    endif()
    if(NOT DEFINED GIT_HASH OR GIT_HASH STREQUAL "")
        set(GIT_HASH "unknown")
    endif()
endif()

configure_file(${CMAKE_SOURCE_DIR}/source/project.h.in ${CMAKE_BINARY_DIR}/project.h @ONLY)

# --- LLISTA DE FONTS (AUTO-DESCOBRIMENT) ---
# Cerquem tots els .cpp dins core/ i game/, més main.cpp. Exclou legacy/.
file(GLOB_RECURSE CORE_SOURCES CONFIGURE_DEPENDS "${CMAKE_SOURCE_DIR}/source/core/*.cpp")
file(GLOB_RECURSE GAME_SOURCES CONFIGURE_DEPENDS "${CMAKE_SOURCE_DIR}/source/game/*.cpp")
file(GLOB_RECURSE EXTERNAL_SOURCES CONFIGURE_DEPENDS "${CMAKE_SOURCE_DIR}/source/external/*.cpp")

set(APP_SOURCES
    ${CORE_SOURCES}
    ${GAME_SOURCES}
    ${EXTERNAL_SOURCES}
    source/main.cpp
)
list(FILTER APP_SOURCES EXCLUDE REGEX ".*/legacy/.*")

list(LENGTH APP_SOURCES APP_SOURCES_COUNT)
message(STATUS "Fonts .cpp trobades: ${APP_SOURCES_COUNT}")

# --- SDL3 ---
find_package(SDL3 REQUIRED CONFIG REQUIRED COMPONENTS SDL3)

add_executable(${PROJECT_NAME} ${APP_SOURCES})

target_include_directories(${PROJECT_NAME} PRIVATE
    "${CMAKE_SOURCE_DIR}/source"
    "${CMAKE_BINARY_DIR}"
)

target_link_libraries(${PROJECT_NAME} PRIVATE SDL3::SDL3)

# Silencia warnings de codi de tercers (mateixa filosofia que el
# .clang-tidy a source/external/). Només afecta aquests TUs concrets;
# la resta del codi continua compilant amb -Wall -Wextra -Wpedantic.
if(EXTERNAL_SOURCES)
    set_source_files_properties(
        ${EXTERNAL_SOURCES}
        PROPERTIES COMPILE_OPTIONS "-Wno-missing-field-initializers;-Wno-deprecated-declarations;-Wno-tautological-compare"
    )
endif()

target_compile_options(${PROJECT_NAME} PRIVATE -Wall -Wextra -Wpedantic)
target_compile_options(${PROJECT_NAME} PRIVATE
    $<$<CONFIG:Release>:-O2 -ffunction-sections -fdata-sections>
)

target_compile_definitions(${PROJECT_NAME} PRIVATE
    $<$<CONFIG:Debug>:_DEBUG>
    $<$<CONFIG:Release>:RELEASE_BUILD>
)

if(APPLE AND MACOSX_BUNDLE)
    target_compile_definitions(${PROJECT_NAME} PRIVATE MACOS_BUNDLE)
endif()

if(WIN32)
    target_compile_definitions(${PROJECT_NAME} PRIVATE WINDOWS_BUILD)
    target_link_libraries(${PROJECT_NAME} PRIVATE mingw32)
    target_link_options(${PROJECT_NAME} PRIVATE
        -static-libgcc
        -static-libstdc++
        -static
    )
elseif(APPLE)
    target_compile_definitions(${PROJECT_NAME} PRIVATE MACOS_BUILD)
    target_compile_options(${PROJECT_NAME} PRIVATE -Wno-deprecated)
elseif(UNIX AND NOT APPLE)
    target_compile_definitions(${PROJECT_NAME} PRIVATE LINUX_BUILD)
endif()

# --- EINA STANDALONE: pack_resources ---
# Executable auxiliar que empaqueta `data/` a `build/resources.pack`.
# EXCLUDE_FROM_ALL: només es compila quan algun target en depèn (ho fa
# `resource_pack`). Build manual: `cmake --build build --target pack_resources`.
add_executable(pack_resources EXCLUDE_FROM_ALL
    tools/pack_resources/pack_resources.cpp
    source/core/resources/resource_pack.cpp
)
target_include_directories(pack_resources PRIVATE
    "${CMAKE_SOURCE_DIR}/source"
    "${CMAKE_BINARY_DIR}"
)
target_compile_options(pack_resources PRIVATE -Wall -Wextra -Wpedantic)

# --- REGENERACIÓ AUTOMÀTICA DE build/resources.pack ---
# A cada build re-empaquetem data/ si algun fitxer dins ha canviat. Evita
# debugar amb un pack obsolet. CONFIGURE_DEPENDS força CMake a re-globbar
# a la pròxima invocació (recull fitxers nous afegits a data/).
file(GLOB_RECURSE DATA_FILES CONFIGURE_DEPENDS "${CMAKE_SOURCE_DIR}/data/*")
set(RESOURCE_PACK "${CMAKE_BINARY_DIR}/resources.pack")

add_custom_command(
    OUTPUT ${RESOURCE_PACK}
    COMMAND $<TARGET_FILE:pack_resources>
        "${CMAKE_SOURCE_DIR}/data"
        "${RESOURCE_PACK}"
    DEPENDS pack_resources ${DATA_FILES}
    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
    COMMENT "Empaquetant data/ → build/resources.pack"
    VERBATIM
)
add_custom_target(resource_pack ALL DEPENDS ${RESOURCE_PACK})
add_dependencies(${PROJECT_NAME} resource_pack)

# --- COMPILACIÓ DE SHADERS GLSL → SPIR-V (headers C++ embedits) ---
# Compila els shaders .glsl a SPIR-V i els converteix en headers C++ embedits
# (source/core/rendering/gpu/spv/*.h). Aquests headers es commiteen al repo,
# així que glslc només és necessari quan canvien els .glsl o falten headers.
#
# Per a macOS hi ha a més els headers MSL escrits a mà a source/core/rendering/gpu/msl/.
set(SHADERS_DIR  "${CMAKE_SOURCE_DIR}/shaders")
set(HEADERS_DIR  "${CMAKE_SOURCE_DIR}/source/core/rendering/gpu/spv")
set(ALL_SHADER_HEADERS
    "${HEADERS_DIR}/line_vert_spv.h"
    "${HEADERS_DIR}/line_frag_spv.h"
    "${HEADERS_DIR}/postfx_vert_spv.h"
    "${HEADERS_DIR}/postfx_frag_spv.h"
    "${HEADERS_DIR}/bloom_frag_spv.h"
)
set(ALL_SHADER_SOURCES
    "${SHADERS_DIR}/line.vert.glsl"
    "${SHADERS_DIR}/line.frag.glsl"
    "${SHADERS_DIR}/postfx.vert.glsl"
    "${SHADERS_DIR}/postfx.frag.glsl"
    "${SHADERS_DIR}/bloom.frag.glsl"
)
set(ALL_SHADER_HEADERS_PRESENT TRUE)
foreach(_spv_header IN LISTS ALL_SHADER_HEADERS)
    if(NOT EXISTS "${_spv_header}")
        set(ALL_SHADER_HEADERS_PRESENT FALSE)
        break()
    endif()
endforeach()
find_program(GLSLC_EXE NAMES glslc HINTS ${Vulkan_GLSLC_EXECUTABLE})
if(GLSLC_EXE)
    add_custom_command(
        OUTPUT  ${ALL_SHADER_HEADERS}
        COMMAND ${CMAKE_COMMAND}
                -D GLSLC=${GLSLC_EXE}
                -D SHADERS_DIR=${SHADERS_DIR}
                -D HEADERS_DIR=${HEADERS_DIR}
                -P ${CMAKE_SOURCE_DIR}/tools/shaders/compile_spirv.cmake
        DEPENDS ${ALL_SHADER_SOURCES} ${CMAKE_SOURCE_DIR}/tools/shaders/compile_spirv.cmake
        COMMENT "Compilant shaders GLSL → headers SPIR-V embedits"
        VERBATIM
    )
    add_custom_target(shaders DEPENDS ${ALL_SHADER_HEADERS})
    add_dependencies(${PROJECT_NAME} shaders)
    message(STATUS "Shaders: glslc trobat (${GLSLC_EXE}); headers SPV es regeneraran si canvia el GLSL")
elseif(ALL_SHADER_HEADERS_PRESENT)
    message(STATUS "Shaders: glslc no trobat — s'usaran els headers SPV ja commiteats al repo")
else()
    message(FATAL_ERROR "glslc no trobat i falten headers SPV: instal·la 'shaderc' o 'vulkan-sdk' per generar-los")
endif()

# --- STATIC ANALYSIS / FORMAT TARGETS ---
find_program(CLANG_TIDY_EXE NAMES clang-tidy)
find_program(CLANG_FORMAT_EXE NAMES clang-format)
find_program(CPPCHECK_EXE NAMES cppcheck)

file(GLOB_RECURSE ALL_SOURCE_FILES
    "${CMAKE_SOURCE_DIR}/source/*.cpp"
    "${CMAKE_SOURCE_DIR}/source/*.hpp"
    "${CMAKE_SOURCE_DIR}/source/*.h"
)
list(FILTER ALL_SOURCE_FILES EXCLUDE REGEX ".*/external/.*")
list(FILTER ALL_SOURCE_FILES EXCLUDE REGEX ".*/legacy/.*")

set(CPPCHECK_SOURCES ${ALL_SOURCE_FILES})
list(FILTER CPPCHECK_SOURCES INCLUDE REGEX ".*\\.cpp$")

if(CLANG_TIDY_EXE)
    # En macOS, obtenir la ruta del SDK perquè clang-tidy trobe els headers del sistema.
    set(CLANG_TIDY_EXTRA_ARGS "")
    if(APPLE)
        execute_process(
            COMMAND xcrun --show-sdk-path
            OUTPUT_VARIABLE MACOS_SDK_PATH
            OUTPUT_STRIP_TRAILING_WHITESPACE
        )
        if(MACOS_SDK_PATH)
            set(CLANG_TIDY_EXTRA_ARGS "--extra-arg=-isysroot${MACOS_SDK_PATH}")
            message(STATUS "clang-tidy usarà SDK de macOS: ${MACOS_SDK_PATH}")
        endif()
    endif()

    add_custom_target(tidy
        COMMAND ${CLANG_TIDY_EXE}
            -p ${CMAKE_BINARY_DIR}
            ${CLANG_TIDY_EXTRA_ARGS}
            ${ALL_SOURCE_FILES}
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        COMMENT "Running clang-tidy..."
    )

    add_custom_target(tidy-fix
        COMMAND ${CLANG_TIDY_EXE}
            -p ${CMAKE_BINARY_DIR}
            ${CLANG_TIDY_EXTRA_ARGS}
            --fix
            ${ALL_SOURCE_FILES}
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        COMMENT "Running clang-tidy with fixes..."
    )
else()
    message(STATUS "clang-tidy no trobat - targets 'tidy' i 'tidy-fix' no disponibles")
endif()

if(CLANG_FORMAT_EXE)
    add_custom_target(format
        COMMAND ${CLANG_FORMAT_EXE}
            -i
            ${ALL_SOURCE_FILES}
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        COMMENT "Running clang-format..."
    )

    add_custom_target(format-check
        COMMAND ${CLANG_FORMAT_EXE}
            --dry-run
            --Werror
            ${ALL_SOURCE_FILES}
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        COMMENT "Checking clang-format..."
    )
else()
    message(STATUS "clang-format no trobat - targets 'format' i 'format-check' no disponibles")
endif()

if(CPPCHECK_EXE)
    add_custom_target(cppcheck
        COMMAND ${CPPCHECK_EXE}
            --enable=warning,style,performance,portability
            --std=c++20
            --language=c++
            --inline-suppr
            --suppress=missingIncludeSystem
            --suppress=toomanyconfigs
            --suppress=*:*source/external/*
            --suppress=*:*source/legacy/*
            --suppress=normalCheckLevelMaxBranches
            --suppress=useStlAlgorithm
            -D_DEBUG
            -DLINUX_BUILD
            --quiet
            -I ${CMAKE_SOURCE_DIR}/source
            ${CPPCHECK_SOURCES}
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        COMMENT "Running cppcheck..."
    )
else()
    message(STATUS "cppcheck no trobat - target 'cppcheck' no disponible")
endif()