# ============================================================
# BreakPilot Core Backend  --  Multi-stage Docker build
# ============================================================

# ---------- Build stage ----------
FROM python:3.12-slim-bookworm AS builder

WORKDIR /app

# Build-time system libs (needed for asyncpg / psycopg2)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libpq-dev \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .

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 -r requirements.txt && \
    pip install --no-cache-dir semgrep bandit

# ---------- Runtime stage ----------
FROM python:3.12-slim-bookworm

WORKDIR /app

# Runtime system libs
#   - libpango / libgdk-pixbuf / shared-mime-info  -> WeasyPrint (pdf_service)
#   - libgl1 / libglib2.0-0                        -> OpenCV (file_processor)
#   - curl                                          -> healthcheck
RUN apt-get update && apt-get install -y --no-install-recommends \
    libpango-1.0-0 \
    libpangocairo-1.0-0 \
    libgdk-pixbuf-2.0-0 \
    libffi-dev \
    shared-mime-info \
    libgl1 \
    libglib2.0-0 \
    curl \
    git \
    && rm -rf /var/lib/apt/lists/*

# Install DevSecOps tools (gitleaks, trivy, grype, syft)
ARG TARGETARCH=arm64
RUN set -eux; \
    # Gitleaks
    GITLEAKS_VERSION=8.21.2; \
    if [ "$TARGETARCH" = "arm64" ]; then GITLEAKS_ARCH=arm64; else GITLEAKS_ARCH=x64; fi; \
    curl -sSfL "https://github.com/gitleaks/gitleaks/releases/download/v${GITLEAKS_VERSION}/gitleaks_${GITLEAKS_VERSION}_linux_${GITLEAKS_ARCH}.tar.gz" \
      | tar xz -C /usr/local/bin gitleaks; \
    # Trivy
    curl -sfL https://raw.githubusercontent.com/aquasecurity/trivy/main/contrib/install.sh | sh -s -- -b /usr/local/bin; \
    # Grype
    curl -sSfL https://raw.githubusercontent.com/anchore/grype/main/install.sh | sh -s -- -b /usr/local/bin; \
    # Syft
    curl -sSfL https://raw.githubusercontent.com/anchore/syft/main/install.sh | sh -s -- -b /usr/local/bin; \
    # Verify
    gitleaks version && trivy --version && grype version && syft version

# Copy virtualenv from builder
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# Non-root user
RUN useradd --create-home --shell /bin/bash appuser

# Copy application code
COPY --chown=appuser:appuser . .

USER appuser

# Python tweaks
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD curl -f http://127.0.0.1:8000/health || exit 1

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