#!/usr/bin/env bash
set -eo pipefail

echo "---> Go Buildpack"

# 1. GET ARGS
layers_dir=$1
plan_path=$3

# shellcheck source=/dev/null
. generate-project.sh "${layers_dir}"

# shellcheck source=/dev/null
. generate-layers.sh "${layers_dir}"
generate_deps_layer build-deps
generate_deps_layer run-deps

# 2. DOWNLOAD go
generate_stack_layer go "${plan_path}" false
# shellcheck source=/dev/null
. init-stack

# 3 build target
target_layer_dir="${layers_dir}"/target
mkdir -p "${target_layer_dir}"/{bin,profile.d}
echo "---> Start building ${DRYCC_APP} version"

cp -rf "$(pwd)" "${target_layer_dir}"/source \
  && cd "${target_layer_dir}"/source \
  && go mod vendor \
  && go build -o "${target_layer_dir}/bin/${DRYCC_APP}" -v . \
  && cd - \
  && rm -rf "${target_layer_dir}"/source

cat >"${target_layer_dir}.toml" <<EOL
[types]
cache = true
build = true
launch = true
EOL
cat >"${target_layer_dir}/profile.d/target.sh" <<EOL
export PATH="${target_layer_dir}/bin:${PATH}"
EOL

generate-launch.sh "${layers_dir}"