###########
# BUILDER #
###########

# pull official base image
FROM python:3.11-slim as builder


# set working directory
WORKDIR /usr/src/app

# set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# install system dependencies
RUN apt-get update \
    && apt-get -y install build-essential netcat-traditional gcc \
    && apt-get clean

# install python dependencies
RUN pip install --upgrade pip setuptools wheel -i https://pypi.tuna.tsinghua.edu.cn/simple
RUN pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pipenv
COPY ./Pipfile .
RUN pipenv install --deploy --dev

# add app
COPY . /usr/src/app
RUN pipenv run pip install black==23.12.1 flake8==7.0.0 isort==5.13.2
# RUN pipenv run flake8 .
# RUN pipenv run black --exclude=migrations . --check
# RUN pipenv run isort . --check-only

#########
# FINAL #
#########

# pull official base image
FROM python:3.11-slim

# create directory for the app user
RUN mkdir -p /home/app

# create the app user
RUN addgroup --system app && adduser --system --group app


# create the appropriate directories
ENV HOME=/home/app
ENV APP_HOME=/home/app/backend
RUN mkdir $APP_HOME
WORKDIR $APP_HOME

# set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
ENV ENVIRONMENT=prod
ENV TESTING=0

# install system dependencies
RUN apt-get update \
    && apt-get -y install build-essential netcat-traditional gcc \
    && apt-get clean

# install python dependencies
COPY --from=builder /usr/src/app/Pipfile .
RUN pip install --upgrade pip setuptools wheel -i https://pypi.tuna.tsinghua.edu.cn/simple
RUN pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pipenv
RUN pipenv install --deploy --dev
RUN pipenv run pip install "uvicorn[standard]==0.26.0"

# add app
COPY . $APP_HOME

# chown all the files to the app user
RUN chown -R app:app $APP_HOME

# change to the app user
USER app


# run gunicorn
CMD pipenv run gunicorn --bind 0.0.0.0:$PORT backend.main:app -k uvicorn.workers.UvicornWorker