ARG BUILD_FROM
FROM $BUILD_FROM as builder

# Install build dependencies
RUN apk add --no-cache \
    git \
    build-base \
    python3-dev \
    linux-headers \
    openssl-dev \
    alsa-lib-dev \
    opus-dev \
    speex-dev \
    speexdsp-dev \
    py3-pip

# Build PJSIP
WORKDIR /tmp
RUN git clone --depth 1 --branch 2.14.1 https://github.com/pjsip/pjproject.git && \
    cd pjproject && \
    ./configure \
        --prefix=/opt/pjsip \
        --enable-shared \
        --disable-video \
        --disable-opencore-amr \
        --disable-silk \
        --disable-opus \
        --disable-resample \
        --disable-speex-aec \
        --disable-g711-codec \
        --disable-l16-codec \
        --disable-g722-codec && \
    make dep && \
    make && \
    make install && \
    cd pjsip-apps/src/python && \
    python3 setup.py build && \
    python3 setup.py install --prefix=/opt/pjsip

# Final stage
FROM $BUILD_FROM

# Install runtime dependencies only
RUN apk add --no-cache \
    python3 \
    py3-pip \
    ffmpeg \
    alsa-lib \
    openssl \
    opus \
    speex \
    speexdsp

# Copy PJSIP from builder
COPY --from=builder /opt/pjsip /usr/local
COPY --from=builder /usr/lib/python3.*/site-packages/pjsua2* /usr/lib/python3.11/site-packages/

# Update library cache
RUN ldconfig /usr/local/lib || true

# Set working directory
WORKDIR /app

# Copy requirements and install Python dependencies
COPY requirements.txt .
RUN pip3 install --no-cache-dir --break-system-packages -r requirements.txt

# Copy application files
COPY run.sh .
COPY sip_service.py .
COPY services.yaml .

RUN chmod +x /app/run.sh

CMD [ "/app/run.sh" ]