# =============================================================================
# Formeleon - Multi-tenant Form Generator
# Author: Björn Runden <br@runden.net>
# File: Dockerfile
# Description: Multi-stage Docker build for development and production.
# =============================================================================

# =============================================================================
# Builder Stage: Install dependencies in a virtual environment
# =============================================================================
FROM python:3.13-slim as builder

# Set environment variables for builder
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

# Install build dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libpq-dev \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Create and activate virtual environment
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

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

# =============================================================================
# Final Stage: Lean runtime image
# =============================================================================
FROM python:3.13-slim

# Set environment variables for runtime
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    FLASK_APP=app.py \
    PATH="/opt/venv/bin:$PATH"

# Install required runtime system dependencies (curl for healthcheck)
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    libpq5 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copy the virtual environment from builder stage
COPY --from=builder /opt/venv /opt/venv

# Copy entrypoint script and ensure it's executable
COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

# Copy application code
COPY . .

# Create necessary runtime directories
RUN mkdir -p /tmp/formeleon_uploads && \
    mkdir -p /app/data && \
    mkdir -p /app/logs && \
    touch /tmp/formeleon_uploads/.gitkeep

EXPOSE 5000

# Health check
HEALTHCHECK --interval=30s --timeout=3s \
    CMD curl -f http://127.0.0.1:5000/ || exit 1

ENTRYPOINT ["/entrypoint.sh"]
CMD ["server"]