FROM python:3.13-slim

# ── System dependencies ───────────────────────────────────────────────────────
# GStreamer runtime + GObject Introspection typelibs needed at runtime.
# libgirepository + libglib dev headers + gcc needed to compile PyGObject.
# gosu: used by entrypoint to drop from root → mopidy after fixing permissions.
RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        # GStreamer runtime
        gstreamer1.0-plugins-good \
        gstreamer1.0-plugins-bad \
        gstreamer1.0-plugins-ugly \
        gstreamer1.0-tools \
        libgstreamer1.0-0 \
        libgstreamer-plugins-base1.0-0 \
        # GObject Introspection typelibs (used by PyGObject at runtime)
        gir1.2-gstreamer-1.0 \
        gir1.2-gst-plugins-base-1.0 \
        # Build deps for PyGObject (can't be removed — runtime .so links against them)
        libgirepository-2.0-dev \
        libglib2.0-dev \
        libcairo2-dev \
        gcc \
        pkg-config \
        # Misc
        curl \
        gettext-base \
        gosu \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# ── Python packages ───────────────────────────────────────────────────────────
# PyGObject must be compiled first so pip can resolve mopidy's gst dependency.
# setuptools provides pkg_resources (no longer bundled in Python 3.13).
# mopidy-spotify 5.x uses the Spotify Web API (no libspotify C extension).
RUN pip install --no-cache-dir PyGObject \
    && pip install --no-cache-dir \
        "setuptools<72" \
        mopidy \
        mopidy-local \
        mopidy-mpd \
        mopidy-youtube \
        "mopidy-spotify>=5.0.0" \
        yt-dlp

# ── Runtime user ──────────────────────────────────────────────────────────────
# Entrypoint runs as root, fixes volume ownership, then execs as mopidy via gosu.
RUN groupadd -r audio 2>/dev/null || true \
    && useradd -r -g audio -d /var/lib/mopidy -s /sbin/nologin mopidy \
    && mkdir -p /var/lib/mopidy /config \
    && chown -R mopidy:audio /var/lib/mopidy /config

COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

EXPOSE 6680

HEALTHCHECK --interval=20s --timeout=5s --start-period=30s \
    CMD curl -sf http://localhost:6680/mopidy/rpc \
        -d '{"jsonrpc":"2.0","id":1,"method":"core.get_version"}' \
        -H 'Content-Type: application/json' | grep -q '"id": 1' || exit 1

ENTRYPOINT ["/entrypoint.sh"]
CMD ["mopidy", "--config", "/tmp/mopidy.conf"]