#!/usr/bin/env bash

# Copyright 2018-2019 Uber Technologies, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -ex

mkdir -p out
pushd h3c
# Run cmake - necessary for building h3api.h
cmake .

# Get canonical list of functions the lib should expose
./scripts/binding_functions.sh && cp binding-functions ../out

# Get the list of defined functions the lib actually needs to bind
bound_functions=`node ../dist/print-bindings.js`

pushd src/h3lib/lib
# Copy size exports into C code
cp ../../../../build/sizes.h ../include
cp ../../../../build/sizes.c .
# Compile with emscripten
emcc -O3 -I ../include *.c -DH3_HAVE_VLA --memory-init-file 0 \
    -s WASM=0 -s INVOKE_RUN=0 \
    -s MODULARIZE_INSTANCE=1 -s EXPORT_NAME="'libh3'" -s EXPORT_ES6=1 \
    -s FILESYSTEM=0 -s NODEJS_CATCH_EXIT=0 -s NODEJS_CATCH_REJECTION=0 \
    -s TOTAL_MEMORY=33554432 -s ALLOW_MEMORY_GROWTH=1 -s WARN_UNALIGNED=1 \
    -s EXPORTED_FUNCTIONS=$bound_functions \
    -s EXTRA_EXPORTED_RUNTIME_METHODS='["cwrap", "getValue", "setValue", "getTempRet0"]' \
    "$@"
cp *.js ../../../../out
popd
popd