# Copyright (c) 2023 - 2026 Chair for Design Automation, TUM
# Copyright (c) 2025 - 2026 Munich Quantum Software Company GmbH
# All rights reserved.
#
# SPDX-License-Identifier: MIT
#
# Licensed under the MIT License

# Declare all external dependencies and make sure that they are available.

include(FetchContent)
set(FETCH_PACKAGES "")

if(BUILD_MQT_DDSIM_BINDINGS)
  # Manually detect the installed mqt-core package.
  execute_process(
    COMMAND "${Python_EXECUTABLE}" -m mqt.core --cmake_dir
    OUTPUT_STRIP_TRAILING_WHITESPACE
    OUTPUT_VARIABLE mqt-core_DIR
    ERROR_QUIET)

  # Add the detected directory to the CMake prefix path.
  if(mqt-core_DIR)
    list(APPEND CMAKE_PREFIX_PATH "${mqt-core_DIR}")
    message(STATUS "Found mqt-core package: ${mqt-core_DIR}")
  endif()

  execute_process(
    COMMAND "${Python_EXECUTABLE}" -m nanobind --cmake_dir
    OUTPUT_STRIP_TRAILING_WHITESPACE
    OUTPUT_VARIABLE nanobind_ROOT)
  find_package(nanobind CONFIG REQUIRED)
endif()

# cmake-format: off
set(MQT_CORE_MINIMUM_VERSION 3.4.1
    CACHE STRING "MQT Core minimum version")
set(MQT_CORE_VERSION 3.4.1
    CACHE STRING "MQT Core version")
set(MQT_CORE_REV "8747a89766dfb943d62ed100d383cd1823d2356c"
    CACHE STRING "MQT Core identifier (tag, branch or commit hash)")
set(MQT_CORE_REPO_OWNER "munich-quantum-toolkit"
    CACHE STRING "MQT Core repository owner (change when using a fork)")
# cmake-format: on
FetchContent_Declare(
  mqt-core
  GIT_REPOSITORY https://github.com/${MQT_CORE_REPO_OWNER}/core.git
  GIT_TAG ${MQT_CORE_REV}
  FIND_PACKAGE_ARGS ${MQT_CORE_MINIMUM_VERSION})
list(APPEND FETCH_PACKAGES mqt-core)

if(BUILD_MQT_DDSIM_TESTS)
  set(gtest_force_shared_crt
      ON
      CACHE BOOL "" FORCE)
  set(GTEST_VERSION
      1.17.0
      CACHE STRING "Google Test version")
  set(GTEST_URL https://github.com/google/googletest/archive/refs/tags/v${GTEST_VERSION}.tar.gz)
  FetchContent_Declare(googletest URL ${GTEST_URL} FIND_PACKAGE_ARGS ${GTEST_VERSION} NAMES GTest)
  list(APPEND FETCH_PACKAGES googletest)
endif()

set(TF_BUILD_TESTS
    OFF
    CACHE INTERNAL "")
set(TF_BUILD_EXAMPLES
    OFF
    CACHE INTERNAL "")
set(TF_BUILD_PROFILER
    OFF
    CACHE INTERNAL "")
set(TF_VERSION
    3.7.0
    CACHE STRING "Taskflow version")
set(TF_URL https://github.com/taskflow/taskflow/archive/refs/tags/v${TF_VERSION}.tar.gz)
FetchContent_Declare(taskflow URL ${TF_URL} FIND_PACKAGE_ARGS)
list(APPEND FETCH_PACKAGES taskflow)

if(BUILD_MQT_DDSIM_CLI)
  set(THREADS_PREFER_PTHREAD_FLAG ON)
  find_package(Threads)
  link_libraries(Threads::Threads)

  set(CXXOPTS_VERSION
      3.1.1
      CACHE STRING "cxxopts version")
  set(CXXOPTS_URL https://github.com/jarro2783/cxxopts/archive/refs/tags/v${CXXOPTS_VERSION}.tar.gz)
  FetchContent_Declare(cxxopts URL ${CXXOPTS_URL} FIND_PACKAGE_ARGS ${CXXOPTS_VERSION})
  list(APPEND FETCH_PACKAGES cxxopts)
endif()

# Make all declared dependencies available.
FetchContent_MakeAvailable(${FETCH_PACKAGES})