FROM python:3.11-slim

# ── System dependencies ───────────────────────────────
RUN apt-get update && apt-get install -y \
    curl wget git ca-certificates \
    tesseract-ocr tesseract-ocr-eng \
    poppler-utils \
    libgl1 libglib2.0-0 libsm6 libxext6 \
    build-essential gfortran \
    && rm -rf /var/lib/apt/lists/*

# ── Install Julia 1.11 (executable-stack fix vs 1.10) ────────────────────────────
ENV JULIA_VERSION=1.11.4
RUN wget -q https://julialang-s3.julialang.org/bin/linux/x64/1.11/julia-${JULIA_VERSION}-linux-x86_64.tar.gz \
    && tar -xzf julia-${JULIA_VERSION}-linux-x86_64.tar.gz \
    && mv julia-${JULIA_VERSION} /usr/local/julia \
    && ln -s /usr/local/julia/bin/julia /usr/local/bin/julia \
    && rm julia-${JULIA_VERSION}-linux-x86_64.tar.gz \
    && julia --version

# ── Julia / app environment ───────────────────────────
ENV JULIA_DEPOT_PATH=/app/.julia
ENV JULIA_NUM_THREADS=4
ENV JULIA_BINDIR=/usr/local/julia/bin
ENV PYTHON_JULIAPKG_OFFLINE=yes

WORKDIR /app

# ── Python dependencies ───────────────────────────────
COPY requirements.txt /tmp/requirements.txt
RUN pip install --no-cache-dir -r /tmp/requirements.txt

# ── Copy project files ────────────────────────────────
COPY . .

# ── Step 1: Warmup — JIT-compile all hot paths (non-fatal) ────
RUN julia /app/src/warmup.jl || true

# ── Step 3: Pre-warm juliacall Python↔Julia bridge (non-fatal) ────
RUN python3 /app/src/warmup_bridge.py || true

# ── Runtime ───────────────────────────────────────────
ENV GRADIO_SERVER_NAME=0.0.0.0
ENV GRADIO_SERVER_PORT=7860
ENV JULIA_DEPOT_PATH=/app/.julia
ENV JULIA_BINDIR=/usr/local/julia/bin
ENV PYTHON_JULIAPKG_OFFLINE=yes

EXPOSE 7860
CMD ["python", "app.py"]