# ──────────────────────────────────────────────────────────────
#  BanGUI — Backend image (Python / FastAPI)
#
#  Compatible with Docker and Podman.
#  Build context must be the project root.
#
#  Usage:
#    docker build -t bangui-backend -f Docker/Dockerfile.backend .
#    podman build -t bangui-backend -f Docker/Dockerfile.backend .
# ──────────────────────────────────────────────────────────────

# ── Stage 1: build dependencies ──────────────────────────────
FROM docker.io/library/python:3.12-slim AS builder

WORKDIR /build

# Install build-time system dependencies
RUN apt-get update \
    && apt-get install -y --no-install-recommends gcc libffi-dev \
    && rm -rf /var/lib/apt/lists/*

COPY backend/pyproject.toml /build/

# Install Python dependencies into a virtual-env so we can copy it cleanly
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"
RUN pip install --no-cache-dir --upgrade pip \
    && pip install --no-cache-dir .

# ── Stage 2: runtime image ───────────────────────────────────
FROM docker.io/library/python:3.12-slim AS runtime

LABEL maintainer="BanGUI" \
      description="BanGUI backend — fail2ban web management API"

# Non-root user for security
RUN groupadd --gid 1000 bangui \
    && useradd --uid 1000 --gid bangui --shell /bin/bash --create-home bangui

WORKDIR /app

# Copy the pre-built virtual-env
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH" \
    PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1

# Copy application source
COPY backend/app /app/app
COPY fail2ban-master /app/fail2ban-master

# Data directory for the SQLite database
RUN mkdir -p /data && chown bangui:bangui /data
VOLUME ["/data"]

# Default environment values (override at runtime)
ENV BANGUI_DATABASE_PATH="/data/bangui.db" \
    BANGUI_FAIL2BAN_SOCKET="/var/run/fail2ban/fail2ban.sock" \
    BANGUI_LOG_LEVEL="info"

EXPOSE 8000

USER bangui

# Health-check using the built-in health endpoint
HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/api/health')" || exit 1

CMD ["uvicorn", "app.main:create_app", "--factory", "--host", "0.0.0.0", "--port", "8000"]
