# Подключение сторонних библиотек как подпроектов (FetchContent).
# Все библиотеки собираются статически.

include(FetchContent)
set(FETCHCONTENT_QUIET OFF)

set(BUILD_SHARED_LIBS OFF CACHE BOOL "Static build for third-party libs" FORCE)

# --- cmark-gfm (Markdown: CommonMark + GFM-таблицы, зачёркивание, задачи, автоссылки) ---
FetchContent_Declare(cmark
    GIT_REPOSITORY https://github.com/github/cmark-gfm.git
    GIT_TAG        0.29.0.gfm.13
    GIT_SHALLOW    TRUE
)
set(CMARK_STATIC ON CACHE BOOL "build static cmark-gfm" FORCE)
set(CMARK_SHARED OFF CACHE BOOL "no shared cmark-gfm" FORCE)
set(CMAKE_C_STANDARD 99) # cmark-gfm требует C99 (CMake 4 по умолчанию подставляет c90)
FetchContent_MakeAvailable(cmark)
set(_cmark_target libcmark-gfm_static)
foreach(_cand IN ITEMS libcmark-gfm_static cmark-gfm_static cmark_gfm_static)
    if(TARGET ${_cand})
        set(_cmark_target ${_cand})
        break()
    endif()
endforeach()
# cmark-gfm: INTERFACE-обёртка (алиасы нельзя модифицировать; include-пути наружу не экспортируются).
add_library(cmark_wrapper INTERFACE)
target_link_libraries(cmark_wrapper INTERFACE ${_cmark_target})
target_include_directories(cmark_wrapper INTERFACE
    "${cmark_SOURCE_DIR}/src"
    "${cmark_BINARY_DIR}/src"
    "${cmark_BINARY_DIR}/extensions")
if(NOT TARGET cmark::cmark)
    add_library(cmark::cmark ALIAS cmark_wrapper)
endif()
if(TARGET libcmark-gfm-extensions_static)
    add_library(cmark_extensions_wrapper INTERFACE)
    target_link_libraries(cmark_extensions_wrapper INTERFACE libcmark-gfm-extensions_static)
    target_include_directories(cmark_extensions_wrapper INTERFACE
        "${cmark_SOURCE_DIR}/extensions"
        "${cmark_BINARY_DIR}/extensions")
    if(NOT TARGET cmark::cmark_extensions)
        add_library(cmark::cmark_extensions ALIAS cmark_extensions_wrapper)
    endif()
endif()

# --- libssh2 (SSH-транспорт для libgit2) ---
FetchContent_Declare(libssh2
    GIT_REPOSITORY https://github.com/libssh2/libssh2.git
    GIT_TAG        libssh2-1.11.1
    GIT_SHALLOW    TRUE
)
set(BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
set(BUILD_TESTING  OFF CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(libssh2)

# macOS (новые SDK): strtoll требует _DARWIN_C_SOURCE, memset_s — __STDC_WANT_LIB_EXT1__.
foreach(_libssh2_tgt IN ITEMS libssh2_static libssh2_shared)
    if(TARGET ${_libssh2_tgt})
        target_compile_definitions(${_libssh2_tgt} PRIVATE
            __STDC_WANT_LIB_EXT1__=1
            _DARWIN_C_SOURCE=1)
    endif()
endforeach()

# libgit2 ищет libssh2 через переменные LIBSSH2_LIBRARY / LIBSSH2_INCLUDE_DIR.
if(TARGET libssh2_static)
    get_target_property(_libssh2_out libssh2_static OUTPUT_NAME)
    set(LIBSSH2_LIBRARY
        "${libssh2_BINARY_DIR}/src/${_libssh2_out}.a"
        CACHE FILEPATH "libssh2 static library" FORCE)
    set(LIBSSH2_INCLUDE_DIR
        "${libssh2_SOURCE_DIR}/include"
        CACHE PATH "libssh2 headers" FORCE)
endif()

# --- libgit2 (Git: история, откаты, push/pull) с SSH через libssh2 ---
FetchContent_Declare(libgit2
    GIT_REPOSITORY https://github.com/libgit2/libgit2.git
    GIT_TAG        v1.9.7
    GIT_SHALLOW    TRUE
)
set(USE_SSH ON CACHE BOOL "Enable SSH transport (libssh2)" FORCE)
set(BUILD_TESTS OFF CACHE BOOL "" FORCE)
set(BUILD_CLI   OFF CACHE BOOL "" FORCE)
set(BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(libgit2)

# libgit2 не создаёт таргет «git2» при сборке как подпроекта:
# наружу экспортируются только include-пути основного таргета libgit2package.
if(TARGET git2 AND NOT TARGET libgit2package)
    # (не бывает; оставлено на будущее)
endif()
if(TARGET libgit2package AND NOT TARGET Flora_libgit2_static)
    add_library(Flora_libgit2_static INTERFACE)
    target_link_libraries(Flora_libgit2_static INTERFACE libgit2package)
    target_include_directories(Flora_libgit2_static INTERFACE
        "${libgit2_SOURCE_DIR}/include")
endif()