# syntax=docker/dockerfile:1
#######################################################################################
# Copyright ETSI Contributors and Others.
#
# 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.
#######################################################################################


#######################
# Stage 1: Base stage #
#######################

FROM python:3.10-alpine AS base

ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

##########################################################################################################################################################################

########################
# Stage 2: Build stage #
########################

FROM base AS build

ARG COMMON_GERRIT_REFSPEC=master
ARG IM_GERRIT_REFSPEC=master

# Install required system packages with pinned versions where possible
RUN apk add --no-cache \
    build-base \
    patch \
    git \
    zlib-dev \
    rust \
    cargo\
    linux-headers \
    musl-dev \
    curl

WORKDIR /app/osm_nbi

# Create virtual environment
RUN python -m venv /app/osm_nbi/.venv
ENV PATH="/app/osm_nbi/.venv/bin:$PATH"

# Install OSM dependencies with cache optimization
RUN --mount=type=cache,target=/root/.cache/pip \
  git clone --filter=blob:none --tags https://osm.etsi.org/gerrit/osm/common.git /tmp/osm-common && \
  cd /tmp/osm-common && \
  git fetch origin ${COMMON_GERRIT_REFSPEC} && \
  git checkout FETCH_HEAD && \
  cd - && \
  pip install --no-cache-dir -r /tmp/osm-common/requirements.txt && \
  pip install /tmp/osm-common

RUN --mount=type=cache,target=/root/.cache/pip \
  git clone --filter=blob:none --tags https://osm.etsi.org/gerrit/osm/IM.git /tmp/osm-im && \
  cd /tmp/osm-im && \
  git fetch origin ${IM_GERRIT_REFSPEC} && \
  git checkout FETCH_HEAD && \
  cd - && \
  pip install --no-cache-dir -r /tmp/osm-im/requirements.txt && \
  pip install /tmp/osm-im

COPY requirements.txt ./
RUN --mount=type=cache,target=/root/.cache/pip \
  pip install --no-cache-dir -r requirements.txt

COPY . .
RUN --mount=type=cache,target=/root/.cache/pip \
  pip install .

# Clean up
RUN find /app/osm_nbi -type d -name ".tox" -exec rm -rf {} +

#############################################################################################################################################################################

########################
# Stage 3: Final stage #
########################

FROM base AS final

RUN apk add --no-cache \
    libgcc \
    libstdc++

WORKDIR /app/osm_nbi

# Create appuser and directories with correct permissions
RUN addgroup -g 1000 appuser && \
    adduser -D -G appuser -u 1000 appuser && \
    mkdir -p /app/storage/kafka /app/log && \
    chown -R appuser:appuser /app

USER appuser:appuser

ENV VIRTUAL_ENV=/app/.venv \
    PATH="/app/.venv/bin:$PATH"

COPY --from=build --chown=appuser:appuser /app/osm_nbi/.venv /app/.venv
COPY --from=build --chown=appuser:appuser /app/osm_nbi/.venv/lib/python3.10/site-packages/osm_nbi/html_public /app/osm_nbi/html_public
COPY --from=build --chown=appuser:appuser /app/osm_nbi/.venv/lib/python3.10/site-packages/osm_nbi/nbi.cfg /app/osm_nbi/nbi.cfg
COPY --from=build --chown=appuser:appuser /app/osm_nbi/.venv/lib/python3.10/site-packages/osm_nbi/http /app/osm_nbi/http
COPY --from=build --chown=appuser:appuser /app/osm_nbi/.venv/lib/python3.10/site-packages/osm_nbi/templates /app/osm_nbi/templates

EXPOSE 9999

# Configuration environment variables
ENV OSMNBI_SOCKET_HOST=0.0.0.0 \
    OSMNBI_SOCKET_PORT=9999 \
    OSMNBI_STORAGE_PATH=/app/storage \
    OSMNBI_DATABASE_DRIVER=mongo \
    OSMNBI_DATABASE_URI=mongodb://mongo:27017 \
    OSMNBI_STATIC_DIR=/app/osm_nbi/html_public \
    OSMNBI_MESSAGE_DRIVER=kafka \
    OSMNBI_MESSAGE_HOST=kafka \
    OSMNBI_MESSAGE_PORT=9092 \
    OSMNBI_LOG_FILE=/app/log/nbi.log \
    OSMNBI_LOG_LEVEL=DEBUG \
    OSMNBI_AUTHENTICATION_BACKEND=internal \
    OSMNBI_PROMETHEUS_HOST=prometheus \
    OSMNBI_PROMETHEUS_PORT=9090

HEALTHCHECK --start-period=120s --interval=10s --timeout=5s --retries=5 \
    CMD curl -k -f https://localhost:9999/osm/ || exit 1

CMD ["python", "-m", "osm_nbi.nbi"]