cmake_minimum_required(VERSION 3.10)

# 可配置的项目名称
set(APP_NAME "video_manager")

# 可配置的配置文件名
set(CONFIG_EXAMPLE_FILE "config.example.json")
set(CONFIG_FILE "config.json")

project(${APP_NAME})

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

add_compile_definitions(GLIB_DISABLE_DEPRECATION_WARNINGS)

# 输出目录
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/../bin)

# GStreamer
find_package(PkgConfig REQUIRED)
pkg_check_modules(GSTREAMER REQUIRED gstreamer-1.0)

# include 路径
include_directories(
    ${CMAKE_SOURCE_DIR}/include
    ${CMAKE_SOURCE_DIR}/third_party/include
    ${CMAKE_SOURCE_DIR}/third_party/include/paho_mqtt
    ${GSTREAMER_INCLUDE_DIRS}
)

# 源文件
file(GLOB SRC_FILES src/*.cpp)

# 生成可执行文件
add_executable(${APP_NAME} ${SRC_FILES})

# lib 路径
link_directories(
    ${GSTREAMER_LIBRARY_DIRS}
    ${CMAKE_SOURCE_DIR}/third_party/lib
)

# 链接库
target_link_libraries(${APP_NAME}
    ${GSTREAMER_LIBRARIES}
    pthread
    ${CMAKE_SOURCE_DIR}/third_party/lib/libmp4v2.a
    ${CMAKE_SOURCE_DIR}/third_party/lib/libutil.a
    ${CMAKE_SOURCE_DIR}/third_party/lib/libpaho-mqttpp3.a
    ${CMAKE_SOURCE_DIR}/third_party/lib/libpaho-mqtt3a.a
    ${CMAKE_SOURCE_DIR}/third_party/lib/libpaho-mqtt3c.a
)

# 拷贝配置文件（仅在不存在时）
add_custom_command(TARGET ${APP_NAME} POST_BUILD
    COMMAND /bin/bash -c
    "if [ ! -f \"$<TARGET_FILE_DIR:${APP_NAME}>/${CONFIG_FILE}\" ]; then \
        mkdir -p \"$<TARGET_FILE_DIR:${APP_NAME}>\" && \
        cp \"${CMAKE_SOURCE_DIR}/${CONFIG_EXAMPLE_FILE}\" \
           \"$<TARGET_FILE_DIR:${APP_NAME}>/${CONFIG_FILE}\"; \
     fi"
)