cmake_minimum_required(VERSION 3.5)
project(kicad_utils)

find_package(Antlr4)
antlr4_add_target(TARGET KicadNet LEXER KicadNetLexer.g4 PARSER KicadNetParser.g4 STATIC)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

set(SOURCE_FILES main.cpp kicad.cpp include/trygvis/kicad.h)
add_executable(kicad_utils ${SOURCE_FILES})
target_include_directories(kicad_utils PUBLIC include)
target_link_libraries(kicad_utils KicadNet Antlr4::antlr4_shared)
target_compile_options(kicad_utils PUBLIC --std=c++14)
target_compile_options(kicad_utils PUBLIC -Wall -Wextra)

add_custom_target(all_examples)

function(kicad_gen)
    set(options IN_SOURCE)
    set(oneValueArgs TARGET NET REF OUTPUT_DIR)

    cmake_parse_arguments(kicad_gen "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})

    if (NOT kicad_gen_TARGET)
        message(FATAL_ERROR "TARGET is required")
    endif ()
    set(TARGET "${kicad_gen_TARGET}")

    if (NOT kicad_gen_NET)
        message(FATAL_ERROR "NET is required")
    endif ()
    set(NET "${CMAKE_CURRENT_SOURCE_DIR}/${kicad_gen_NET}")

    if (NOT kicad_gen_REF)
        message(FATAL_ERROR "REF is required")
    endif ()
    set(REF "${kicad_gen_REF}")

    if (kicad_gen_OUTPUT_DIR)
        if (kicad_gen_IN_SOURCE)
            message(FATAL_ERROR "IN_SOURCE can't be used if OUTPUT_DIR is used")
        endif ()

        set(OUTPUT_DIR "${kicad_gen_OUTPUT_DIR}")
    else ()
        message("IN_SOURCE=${kicad_gen_IN_SOURCE}")
        if (kicad_gen_IN_SOURCE)
            set(OUTPUT_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
        else ()
            set(OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}")
        endif ()
    endif ()

    set(OUTPUT_FILE "${OUTPUT_DIR}/${TARGET}")
    message("OUTPUT_FILE=${OUTPUT_FILE}")
    message("NET=${NET}")

    add_custom_command(OUTPUT ${OUTPUT_FILE}
        COMMAND kicad_utils -f ${NET} -r ${REF} > kicad-${TARGET}.tmp
        COMMAND cmake -E make_directory -p ${OUTPUT_DIR}
        COMMAND cmake -E rename kicad-${TARGET}.tmp ${OUTPUT_FILE}
        MAIN_DEPENDENCY ${NET}
        DEPENDS kicad_utils
        COMMENT "Generating ${TARGET}")
endfunction()

add_subdirectory(examples)