# Use a lightweight Python base image
FROM python:3.10-slim

# Install system-level dependencies
RUN apt-get update && apt-get install -y \
    tesseract-ocr \
    libglib2.0-0 \
    libgl1 \
    libsm6 \
    libxext6 \
    libxrender-dev \
    poppler-utils \
    ffmpeg \
    git \
    build-essential \
    curl \
 && rm -rf /var/lib/apt/lists/*

# Verify Tesseract installation
RUN ln -s /usr/bin/tesseract /usr/local/bin/tesseract && \
    tesseract --version

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PIP_NO_CACHE_DIR=1
ENV HF_HUB_DISABLE_SYMLINKS_WARNING=1
ENV LANG=C.UTF-8
ENV LC_ALL=C.UTF-8
ENV TESSERACT_PATH=/usr/bin/tesseract
ENV PATH="${TESSERACT_PATH}:${PATH}"

# Set working directory
WORKDIR /home/user/app

# Install Python dependencies
COPY requirements.txt .
RUN pip install --upgrade pip && pip install -r requirements.txt

# Copy application code
COPY . .

# Download NLTK tokenizer
RUN python -m nltk.downloader punkt

# Expose port for Gradio
EXPOSE 7860

# Optional: container health check
HEALTHCHECK CMD curl --fail http://localhost:7860 || exit 1

# Start the application
CMD ["python", "app.py"]