FROM debian:bookworm-slim

ARG T_VERSION=1453
ARG T_ZIP=terraria-server-${T_VERSION}.zip
ARG T_URL=https://terraria.org/api/download/pc-dedicated-server/${T_ZIP}

# Tools needed to fetch + unpack the official server zip
RUN apt-get update && apt-get install -y --no-install-recommends \
      ca-certificates wget unzip \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /opt/terraria

# Download + extract
RUN wget -O /tmp/terraria.zip "${T_URL}" \
    && unzip /tmp/terraria.zip -d /opt/terraria \
    && rm /tmp/terraria.zip \
    && chmod +x "/opt/terraria/${T_VERSION}/Linux/TerrariaServer.bin.x86_64"

# Runtime dirs (mounted via volumes)
RUN mkdir -p /config /worlds

# Optional: run as non-root (recommended)
RUN useradd -m -u 1000 terraria \
    && chown -R terraria:terraria /config /worlds /opt/terraria
USER terraria

WORKDIR /opt/terraria/${T_VERSION}/Linux

EXPOSE 7777/tcp 7777/udp

COPY --chown=terraria:terraria entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

ENTRYPOINT ["/entrypoint.sh"]