# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT-0

# Define global args
ARG APP_DIR=/opt/app
ARG APP_USER=appuser
ARG APP_GROUP=appgroup

# Stage 1: Build image for function
FROM public.ecr.aws/bitnami/ruby:3.0 AS build-image

ARG APP_DIR

# Update package
RUN apt-get -y update && apt-get -y upgrade

# Install bundler
RUN gem install -N bundler:2.2.19

# Set working directory
RUN mkdir -p $APP_DIR
WORKDIR ${APP_DIR}

# Install app dependencies
COPY Gemfile Gemfile.lock ${APP_DIR}/
RUN bundle config set --local path vendor/bundle && bundle install

# Copy function code
COPY function.rb ${APP_DIR}/
COPY lib ${APP_DIR}/lib

# Stage 2: Final runtime image
FROM public.ecr.aws/bitnami/ruby:3.0-prod

# Include global arg in this stage of the build
ARG APP_DIR
ARG APP_USER
ARG APP_GROUP

# Update package
RUN apt-get -y update && apt-get -y upgrade

# Create an app user to run application
RUN addgroup $APP_GROUP && \
    adduser --disabled-login --ingroup $APP_GROUP $APP_USER && \
    mkdir $APP_DIR && \
    chown $APP_USER:$APP_GROUP $APP_DIR

# Install lambda runtime interface client
RUN gem install aws_lambda_ric

# Set user
WORKDIR ${APP_DIR}
USER $APP_USER

# Copy in the built dependencies
COPY --chown=$APP_USER:$APP_GROUP --from=build-image ${APP_DIR} ${APP_DIR}

ENTRYPOINT ["aws_lambda_ric"]
CMD [ "function.Billing::InvoiceGenerator.process" ]