cmake_minimum_required(VERSION 3.10)
project(PrivateBinAPI)

set(CMAKE_CXX_STANDARD 17)

# Platform-specific configurations
if(WIN32)
    # Windows-specific settings
    add_definitions(-DWINDOWS)
    set(PLATFORM_LIBS winhttp)
elseif(UNIX)
    # Linux-specific settings
    add_definitions(-DLINUX)
    find_package(PkgConfig REQUIRED)
    find_package(CURL REQUIRED)
    set(PLATFORM_LIBS ${CURL_LIBRARIES})
endif()

# Handle dependencies
find_package(cryptopp CONFIG REQUIRED)
find_package(nlohmann_json CONFIG REQUIRED)

# Add library sources
set(SOURCES
    src/privatebinapi.cpp
    src/http_client.cpp
    src/crypto.cpp
    src/json_parser.cpp
    src/base58.cpp
)

set(HEADERS
    include/privatebinapi.h
    include/http_client.h
    include/crypto.h
    include/json_parser.h
    include/base58.h
)

# Create the shared library
add_library(privatebinapi SHARED ${SOURCES} ${HEADERS})

# Include directories
target_include_directories(privatebinapi PUBLIC 
    ${CMAKE_CURRENT_SOURCE_DIR}/include
)

# Explicitly include vcpkg directories
target_include_directories(privatebinapi PRIVATE
    ${CMAKE_CURRENT_BINARY_DIR}/vcpkg_installed/x64-windows/include
)

# Link dependencies
target_link_libraries(privatebinapi PRIVATE 
    cryptopp::cryptopp
    nlohmann_json::nlohmann_json
    ${PLATFORM_LIBS}
)

# Install targets
install(TARGETS privatebinapi
    RUNTIME DESTINATION bin
    LIBRARY DESTINATION lib
    ARCHIVE DESTINATION lib
)

install(FILES ${HEADERS} DESTINATION include/privatebinapi)

# Tests
include(CTest)
enable_testing()
add_subdirectory(tests)

# ===================== LLVM/clang-cl Coverage (optional) =====================
option(ENABLE_LLVM_COVERAGE "Enable LLVM/clang-cl coverage instrumentation" OFF)

if(ENABLE_LLVM_COVERAGE)
    if(NOT CMAKE_CXX_COMPILER_ID MATCHES "Clang")
        message(FATAL_ERROR "ENABLE_LLVM_COVERAGE requires clang/clang-cl as compiler (CMAKE_CXX_COMPILER_ID=Clang)")
    endif()

    # Instrumentation flags
    add_compile_options(-fprofile-instr-generate -fcoverage-mapping)
    add_link_options(-fprofile-instr-generate)

    # Helper variables for report tools (can be overridden from environment)
    set(LLVM_PROFDATA "llvm-profdata" CACHE STRING "Path to llvm-profdata")
    set(LLVM_COV "llvm-cov" CACHE STRING "Path to llvm-cov")

    # Custom target to run tests and produce coverage report
    # Usage: cmake --build build --target coverage_llvm --config Release
    add_custom_target(
        coverage_llvm
        COMMAND ${CMAKE_COMMAND} -E env
                LLVM_PROFILE_FILE=${CMAKE_BINARY_DIR}/coverage/%p-%m.profraw
                ctest -C $<IF:$<CONFIG:>,${CMAKE_BUILD_TYPE},$<CONFIG>> --output-on-failure
        COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/coverage
        COMMAND ${LLVM_PROFDATA} merge -sparse ${CMAKE_BINARY_DIR}/coverage/*.profraw -o ${CMAKE_BINARY_DIR}/coverage/merged.profdata
        COMMAND ${LLVM_COV} report
                $<TARGET_FILE:privatebinapi>
                --instr-profile=${CMAKE_BINARY_DIR}/coverage/merged.profdata
                --ignore-filename-regex="(vcpkg|external|CMakeFiles)"
        COMMAND ${LLVM_COV} show
                $<TARGET_FILE:privatebinapi>
                --instr-profile=${CMAKE_BINARY_DIR}/coverage/merged.profdata
                --ignore-filename-regex="(vcpkg|external|CMakeFiles)"
                --format=html
                --output-dir=${CMAKE_BINARY_DIR}/coverage/html
        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
        DEPENDS privatebinapi
    )
endif()