# SPDX-License-Identifier: Apache-2.0

cmake_minimum_required(VERSION 3.20.0)

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(tls_configurations)

target_sources(app PRIVATE src/main.c)

set(gen_dir ${ZEPHYR_BINARY_DIR}/include/generated/)

# Helper function to convert the content of a PEM file (generated by OpenSSL)
# to a C string that can be parsed by Mbed TLS. The format is unchanged, it's
# still PEM, but new lines are replaced by "\n", so that both C compiler and
# Mbed TLS parser are happy.
function(pem_to_mbedtls target input_file)
  file(READ credentials/${input_file} input_file_content)
  string(REGEX REPLACE "\n" "\\\\n" input_file_content ${input_file_content})
  set(GENERATED_FILE ${gen_dir}/${input_file}.inc)
  file(WRITE ${GENERATED_FILE} "\"${input_file_content}\"\n")
  generate_unique_target_name_from_filename(${input_file} generated_target_name)
  add_custom_target(${generated_target_name} DEPENDS ${GENERATED_FILE})
  add_dependencies(${target} ${generated_target_name})
endfunction()

pem_to_mbedtls(app ec.crt)
pem_to_mbedtls(app rsa.crt)