#!/bin/bash -e
# MAIN REQUIRED ENVIRONMENT VARIABLES:
#   OPERATING_SYSTEM_NAME = <windows | linux | osx>
#   CPU_ARCHITECTURE_NAME = <amd64 | aarch64 | 386 | armv6 | armv7 | ppc64le>
#   IMPLEMENTATION_NAME = <tdlib | tdlight>
#   CPU_CORES = "-- -j<cores>" or "-m" on Windows
# OTHER REQUIRED ENVIRONMENT VARIABLES:
#   CMAKE_EXTRA_ARGUMENTS = <args>

# Check variables correctness
if [ -z "${OPERATING_SYSTEM_NAME}" ]; then
	echo "Missing parameter: OPERATING_SYSTEM_NAME"
	exit 1
fi
if [ -z "${CPU_ARCHITECTURE_NAME}" ]; then
	echo "Missing parameter: CPU_ARCHITECTURE_NAME"
	exit 1
fi
if [ -z "${IMPLEMENTATION_NAME}" ]; then
	echo "Missing parameter: IMPLEMENTATION_NAME"
	exit 1
fi
if [ -z "${CPU_CORES}" ]; then
	echo "Missing parameter: CPU_CORES"
	exit 1
fi

cd ../../

# Print details
echo "Generating TdApi.java..."
echo "Current directory: $(pwd)"
echo "Operating system: ${OPERATING_SYSTEM_NAME}"
echo "Architecture: ${CPU_ARCHITECTURE_NAME}"
echo "Td implementation: ${IMPLEMENTATION_NAME}"
echo "CPU cores count: ${CPU_CORES}"
echo "CMake extra arguments: '${CMAKE_EXTRA_ARGUMENTS}'"

# Setup constants
if [[ "$OPERATING_SYSTEM_NAME" == "windows" ]]; then
	export PYTHON_EXECUTABLE="python"
else
	export PYTHON_EXECUTABLE="python3"
fi


# Delete old data
echo "Deleting old data..."
[ -d ./generated/tdapi_java_build/ ] && rm -r ./generated/tdapi_java_build/
[ -d ./generated/tdjni_build/ ] && rm -r ./generated/tdjni_build/
[ -d ./generated/tdjni_bin/ ] && rm -r ./generated/tdjni_bin/
[ -d ./generated/tdjni_docs/ ] && rm -r ./generated/tdjni_docs/
[ -d ./generated/src/main/jni-cpp-src/ ] && rm -r ./generated/src/main/jni-cpp-src/
[ -d ./generated/src/main/jni-java-src/ ] && rm -r ./generated/src/main/jni-java-src/
[ -f ./generated/src/main/java/it/tdlight/jni/TdApi.java ] && rm ./generated/src/main/java/it/tdlight/jni/TdApi.java

# Create missing folders
echo "Creating missing folders..."
[ -d ./generated/tdapi_java_build/ ] || mkdir ./generated/tdapi_java_build/
[ -d ./generated/tdjni_build/ ] || mkdir ./generated/tdjni_build/
[ -d ./generated/tdjni_bin/ ] || mkdir ./generated/tdjni_bin/
[ -d ./generated/tdjni_docs/ ] || mkdir ./generated/tdjni_docs/

# Copy source files
echo "Copying source files..."
cp -r ./src/main/jni-cpp-src/common/. ./generated/src/main/jni-cpp-src
cp -r ./src/main/jni-cpp-src/${IMPLEMENTATION_NAME}/. ./generated/src/main/jni-cpp-src
cp -r ./src/main/jni-java-src ./generated/src/main/jni-java-src

# Copy executables
echo "Copying executables..."
if [[ "$OPERATING_SYSTEM_NAME" == "windows" ]]; then
	export TD_GENERATED_BINARIES_DIR=$(realpath -m ./generated/td_tools/td/generate/Release)
else
	export TD_GENERATED_BINARIES_DIR=$(realpath -m ./generated/td_tools/td/generate)
fi


# Configure cmake
echo "Configuring CMake..."
cd ./generated/tdapi_java_build/
echo "Telegram source path: '$(realpath -m ../implementation/)'"
echo "Td bin path: '$(realpath -m ../td_bin/)'"
echo "Td bin files: $(ls $(realpath -m ../td_bin/))"
echo "Td bin/lib path: '$(realpath -m ../td_bin/lib/)'"
echo "Td bin/lib files: $(ls $(realpath -m ../td_bin/lib/))"
echo "Td CMake path: '$(realpath -m ../td_bin/lib/cmake/)'"
echo "Td CMake files: $(ls $(realpath -m ../td_bin/lib/cmake/))"
echo "Td CMake/td path: '$(realpath -m ../td_bin/lib/cmake/Td/)'"
echo "Td CMake/td files: $(ls $(realpath -m ../td_bin/lib/cmake/Td/))"
cmake -DCMAKE_BUILD_TYPE=Release \
 -DTD_SRC_DIR=$(realpath -m ../implementation/) \
 -DTD_GENERATED_BINARIES_DIR=${TD_GENERATED_BINARIES_DIR} \
 -DTd_DIR=$(realpath -m ../td_bin/lib/cmake/Td/) \
 -DTDNATIVES_BIN_DIR=$(realpath -m ../tdjni_bin/) \
 -DTDNATIVES_DOCS_BIN_DIR=$(realpath -m ../tdjni_docs/) \
 -DJAVA_SRC_DIR=$(realpath -m ../src/main/jni-java-src/) \
 ${CMAKE_EXTRA_ARGUMENTS} \
 $(realpath -m ../src/main/jni-cpp-src/)

# Run cmake to generate TdApi.java
echo "Generating TdApi.java..."
cmake --build . --target td_generate_java_api --config Release ${CPU_CORES}
cd ..

echo "Patching TdApi.java..."
${PYTHON_EXECUTABLE} ../scripts/core/tdlib-serializer/tdlib-serializer/ $(realpath -m ./src/main/jni-java-src/it/tdlight/jni/TdApi.java) $(realpath -m ./src/main/jni-java-src/it/tdlight/jni/new_TdApi.java) $(realpath -m ../scripts/core/tdlib-serializer/tdlib-serializer/headers.txt)
rm ./src/main/jni-java-src/it/tdlight/jni/TdApi.java
if [[ "$OPERATING_SYSTEM_NAME" == "osx" ]]; then
	unexpand --tabs=2 ./src/main/jni-java-src/it/tdlight/jni/new_TdApi.java > ./src/main/jni-java-src/it/tdlight/jni/TdApi.java
else
	unexpand -t 2 ./src/main/jni-java-src/it/tdlight/jni/new_TdApi.java > ./src/main/jni-java-src/it/tdlight/jni/TdApi.java
fi
rm ./src/main/jni-java-src/it/tdlight/jni/new_TdApi.java
cp ./src/main/jni-java-src/it/tdlight/jni/TdApi.java ./src/main/java/it/tdlight/jni/TdApi.java

echo "Generated '$(realpath -m ./src/main/java/it/tdlight/jni/TdApi.java)'"

echo "Done."
exit 0