cmake_minimum_required(VERSION 3.11...3.13)
if(${CMAKE_VERSION} VERSION_LESS 3.12)
    cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
endif()

include(FetchContent)

if(${CMAKE_VERSION} VERSION_LESS 3.14)
    macro(FetchContent_MakeAvailable NAME)
        FetchContent_GetProperties(${NAME})
        if(NOT ${NAME}_POPULATED)
            FetchContent_Populate(${NAME})
            add_subdirectory(${${NAME}_SOURCE_DIR} ${${NAME}_BINARY_DIR})
        endif()
    endmacro()
endif()

set(SQLITECPP_IN_EXTENSION ON CACHE INTERNAL "")
set(SQLITECPP_INTERNAL_SQLITE OFF CACHE INTERNAL "")
set(SQLITE_ENABLE_COLUMN_METADATA OFF CACHE INTERNAL "")

if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
    FetchContent_Declare(
        sqlitecpp
        GIT_REPOSITORY  https://github.com/mlin/SQLiteCpp.git
        GIT_TAG         6d089fc
    )
    FetchContent_MakeAvailable(sqlitecpp)
    include_directories(${sqlitecpp_SOURCE_DIR}/include)


    FetchContent_Declare(
        sqlite_web_vfs
        GIT_REPOSITORY  https://github.com/mlin/sqlite_web_vfs.git
        GIT_TAG         9ae962d
    )
    FetchContent_MakeAvailable(sqlite_web_vfs)
    include_directories(${sqlite_web_vfs_SOURCE_DIR}/src)
    endif()

if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
    # Don't dlopen() libcurl until first attempt to use web_vfs -- avoids loading its large tree of
    # shared library dependencies in most cases. Enabled only for Linux because it seemed to cause
    # libcurl routines to intermittently segfault in the macOS Python tests, which we haven't had
    # time to track down yet.
    add_definitions(-DHTTP_LAZYCURL)
    set(LINK_LIBCURL "")
else()
    set(LINK_LIBCURL curl)
ENDIF()

project(sqlite_nested_vfs VERSION 1.0
        DESCRIPTION "SQLite VFS extension storing database pages in...a SQLite database"
        LANGUAGES C CXX)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)


    add_library(nested_vfs SHARED src/nested_vfs.cc src/SQLiteNestedVFS.h)
    SET_TARGET_PROPERTIES(nested_vfs PROPERTIES PREFIX "")
    target_link_libraries(nested_vfs PRIVATE SQLiteCpp ${LINK_LIBCURL})

    add_library(zstd_vfs SHARED src/zstd_vfs.cc src/SQLiteNestedVFS.h src/zstd_vfs.h)
    SET_TARGET_PROPERTIES(zstd_vfs PROPERTIES PREFIX "")
    target_link_libraries(zstd_vfs PRIVATE SQLiteCpp zstd ${LINK_LIBCURL})



if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")

    if(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
        message( FATAL_ERROR "On Windows, please install vcpkg and set CMAKE_TOOLCHAIN_FILE as per https://github.com/microsoft/vcpkg/blob/master/docs/users/integration.md#cmake-integration" )
    endif()

    if(NOT DEFINED VCPKG_TARGET_TRIPLET)
        message( FATAL_ERROR "On Windows, when using vcpkg, set -DVCPKG_TARGET_TRIPLET=x86-windows or -DVCPKG_TARGET_TRIPLET=x64-windows" )
    endif()

    find_package(unofficial-sqlite3 CONFIG REQUIRED)
    find_package(SQLiteCpp CONFIG REQUIRED)
    find_package(zstd CONFIG REQUIRED)
    SET_TARGET_PROPERTIES(nested_vfs PROPERTIES PREFIX "")
    target_link_libraries(nested_vfs PRIVATE SQLiteCpp ${LINK_LIBCURL})
    #add_library(zstd_vfs SHARED src/zstd_vfs.cc src/SQLiteNestedVFS.h src/zstd_vfs.h)
    SET_TARGET_PROPERTIES(zstd_vfs PROPERTIES PREFIX "")
    target_link_libraries(zstd_vfs PRIVATE SQLiteCpp zstd ${LINK_LIBCURL})

endif()