# Define global args
ARG FUNCTION_DIR="/home/app/"
ARG RUNTIME_VERSION
ARG DISTRO_VERSION

# Stage 1 - build function and dependencies
FROM node:${RUNTIME_VERSION}-alpine${DISTRO_VERSION} AS build-image
# Install aws-lambda-cpp build dependencies
RUN apk add --update-cache \
        build-base \
        libtool \
        musl-dev \
        libressl-dev \
        libffi-dev \
        autoconf \
        automake \
        libexecinfo-dev \
        make \
        cmake \
        python3 \
        libcurl

# Include global arg in this stage of the build
ARG FUNCTION_DIR
# Create function directory
RUN mkdir -p ${FUNCTION_DIR}

# Copy & build Runtime Interface Client package (as we're installing it from a local filesystem source)
WORKDIR ${FUNCTION_DIR}/deps/aws-lambda-ric
COPY . .

# Node14 uses npm@6.14.18 by default which will downgrade permissions, if it's root,
# before running any build scripts: https://github.com/npm/npm/issues/3497 
# Starting from npm@7.0.0, when npm is run as root, 
# scripts are always run with the effective uid and gid of the working directory owner.
RUN if [[ $(node -v | cut -c 1-3) == "v14" ]] ; then npm install -g npm@7 ; fi
RUN make build && \
    npm run test:unit

# Copy function code
COPY test/integration/test-handlers/programmatic/* ${FUNCTION_DIR}
# Install the function's dependencies
WORKDIR ${FUNCTION_DIR}
RUN npm install


# Stage 2 - final runtime image
# Grab a fresh copy of the Node image
FROM node:${RUNTIME_VERSION}-alpine${DISTRO_VERSION}

# Required for Node runtimes which use npm@8.6.0+ because
# by default npm writes logs under /home/.npm and Lambda fs is read-only
ENV NPM_CONFIG_CACHE=/tmp/.npm
# Include global arg in this stage of the build
ARG FUNCTION_DIR
# Set working directory to function root directory
WORKDIR ${FUNCTION_DIR}
# Copy in the built dependencies
COPY --from=build-image ${FUNCTION_DIR} ${FUNCTION_DIR}

CMD [ "/usr/local/bin/node", "index.mjs" ]