# Use official Alpine-based Python image
FROM python:3.11-alpine

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apk add --no-cache --virtual .build-deps \
    gcc \
    musl-dev \
    libffi-dev \
    && apk add --no-cache bash

# Copy requirements first to leverage Docker cache
COPY requirements.txt .

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Copy application files
COPY GTbot.py .

# Remove build dependencies (keep image small)
RUN apk del .build-deps

# Set environment variables (fallback values if .env missing)
ENV API_BASE_URL=${API_BASE_URL}
ENV BEARER_TOKEN=${BEARER_TOKEN}
ENV TELEGRAM_TOKEN=${TELEGRAM_TOKEN2}
ENV ALLOWED_CHAT_ID=${ALLOWED_CHAT_ID}
ENV ALLOWED_THREAD_ID=${ALLOWED_THREAD_ID}

# Start the bot
CMD ["python3", "-u", "GTbot.py"]