cmake_minimum_required(VERSION 3.14 FATAL_ERROR)

# ---- Project ----

project(
  PEGParser
  VERSION 2.1
  LANGUAGES CXX
)

# ---- Include guards ----

if(PROJECT_SOURCE_DIR STREQUAL PROJECT_BINARY_DIR)
  message(
    FATAL_ERROR
      "In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there."
  )
endif()

# ---- Add dependencies via CPM ----

include(cmake/CPM.cmake)

# PackageProject.cmake will be used to make our target installable
CPMAddPackage(
  NAME PackageProject.cmake
  GITHUB_REPOSITORY TheLartians/PackageProject.cmake
  VERSION 1.4
)

CPMAddPackage(
  NAME EasyIterator
  GITHUB_REPOSITORY TheLartians/EasyIterator
  VERSION 1.4
)

# ---- Add source files ----

file(GLOB_RECURSE headers CONFIGURE_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/include/*.h")
file(GLOB_RECURSE sources CONFIGURE_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/source/*.cpp")

# ---- Create library ----

add_library(PEGParser ${headers} ${sources})

set_target_properties(PEGParser PROPERTIES CXX_STANDARD 17)

target_compile_options(PEGParser PUBLIC "$<$<BOOL:${MSVC}>:/permissive->")

target_link_libraries(PEGParser PRIVATE EasyIterator)

target_include_directories(
  PEGParser PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
                   $<INSTALL_INTERFACE:include/${PROJECT_NAME}-${PROJECT_VERSION}>
)

# ---- Create an installable target ----
# this allows users to install and find the library via `find_package()`.

packageProject(
  NAME ${PROJECT_NAME}
  NAMESPACE ${PROJECT_NAME}
  VERSION ${PROJECT_VERSION}
  BINARY_DIR ${PROJECT_BINARY_DIR}
  INCLUDE_DIR ${PROJECT_SOURCE_DIR}/include
  INCLUDE_DESTINATION include/${PROJECT_NAME}-${PROJECT_VERSION}
  DEPENDENCIES EasyIterator
)