include_guard(GLOBAL)

function(_cppbessot_dotenv_escape output_var value)
  set(escaped "${value}")
  string(REPLACE "\\" "\\\\" escaped "${escaped}")
  string(REPLACE "\"" "\\\"" escaped "${escaped}")
  string(REPLACE "\n" "\\n" escaped "${escaped}")
  string(REPLACE "\r" "\\r" escaped "${escaped}")
  string(REPLACE "\t" "\\t" escaped "${escaped}")
  set(${output_var} "${escaped}" PARENT_SCOPE)
endfunction()

function(_cppbessot_dotenv_append output_var name value)
  _cppbessot_dotenv_escape(escaped_value "${value}")
  set(line "${name}=\"${escaped_value}\"\n")
  set(${output_var} "${${output_var}}${line}" PARENT_SCOPE)
endfunction()

function(cppbessot_write_runtime_env_file output_path)
  set(env_contents
    "# Generated by cppbessot during CMake configure. Do not edit.\n")
  _cppbessot_dotenv_append(env_contents
    "DB_TARGET" "${DB_TARGET}")
  _cppbessot_dotenv_append(env_contents
    "CPPBESSOT_DB_PGSQL_PROD_CONNSTR" "${CPPBESSOT_DB_PGSQL_PROD_CONNSTR}")
  _cppbessot_dotenv_append(env_contents
    "CPPBESSOT_DB_PGSQL_DEV_CONNSTR" "${CPPBESSOT_DB_PGSQL_DEV_CONNSTR}")
  _cppbessot_dotenv_append(env_contents
    "CPPBESSOT_DB_PGSQL_PRODDEV_CONNSTR" "${CPPBESSOT_DB_PGSQL_PRODDEV_CONNSTR}")
  _cppbessot_dotenv_append(env_contents
    "CPPBESSOT_DB_PGSQL_TESTS_CONNSTR" "${CPPBESSOT_DB_PGSQL_TESTS_CONNSTR}")
  _cppbessot_dotenv_append(env_contents
    "CPPBESSOT_DB_SQLITE_PROD_PATH" "${CPPBESSOT_DB_SQLITE_PROD_PATH}")
  _cppbessot_dotenv_append(env_contents
    "CPPBESSOT_DB_SQLITE_DEV_PATH" "${CPPBESSOT_DB_SQLITE_DEV_PATH}")
  _cppbessot_dotenv_append(env_contents
    "CPPBESSOT_DB_SQLITE_PRODDEV_PATH" "${CPPBESSOT_DB_SQLITE_PRODDEV_PATH}")
  _cppbessot_dotenv_append(env_contents
    "CPPBESSOT_DB_SQLITE_TESTS_PATH" "${CPPBESSOT_DB_SQLITE_TESTS_PATH}")
  file(WRITE "${output_path}" "${env_contents}")
endfunction()