# ---- Single Stage: Simple, Fast, Robuste pour HF Spaces ----
FROM python:3.11-slim

# 1. Métadonnées & Variables d'env
LABEL maintainer="HF Space User"
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1 \
    YTDLP_NO_LAZY_EXTRACTORS=1

# 2. Install System Deps (FFMPEG + Certificats) en UNE seule couche RUN
# Utilise --mount=type=cache pour accélérer les rebuilds locaux/HF
RUN --mount=type=cache,target=/var/cache/apt \
    --mount=type=cache,target=/var/lib/apt \
    apt-get update && apt-get install -y --no-install-recommends \
    ffmpeg \
    ca-certificates \
    curl \
    && rm -rf /var/lib/apt/lists/*

# 3. Créer user non-root (Sécurité HF)
RUN useradd -m -u 1000 appuser

# 4. Workdir & Permissions
WORKDIR /app
RUN mkdir -p /app/downloads && chown -R appuser:appuser /app

# 5. Copier SEULEMENT requirements.txt d'abord (Cache Docker Layer)
COPY --chown=appuser:appuser requirements.txt .

# 6. Install Python Deps (Cache pip mount)
# --no-deps légèrement plus rapide mais risqué, on garde standard.
RUN --mount=type=cache,target=/root/.cache/pip \
    pip install --no-cache-dir -r requirements.txt

# 7. Copier le Code Applicatif (Dernière étape = cache max si code change)
COPY --chown=appuser:appuser ./app ./app

# 8. User & Launch
USER appuser
EXPOSE 7860

# HF Spaces attend le serveur sur 0.0.0.0:7860
# --proxy-headers --forwarded-allow-ips=* indispensable derrière le proxy HF
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860", "--proxy-headers", "--forwarded-allow-ips", "*"]