FROM ubuntu:24.04

RUN apt-get update && apt-get install -y --no-install-recommends \
    ca-certificates tzdata curl locales gettext-base systemd systemd-sysv && \
    rm -rf /var/lib/apt/lists/*

# Configure systemd for container use
RUN cd /lib/systemd/system/sysinit.target.wants/ && \
    ls | grep -v systemd-tmpfiles-setup | xargs rm -f && \
    rm -f /lib/systemd/system/multi-user.target.wants/* && \
    rm -f /etc/systemd/system/*.wants/* && \
    rm -f /lib/systemd/system/local-fs.target.wants/* && \
    rm -f /lib/systemd/system/sockets.target.wants/*udev* && \
    rm -f /lib/systemd/system/sockets.target.wants/*initctl* && \
    rm -f /lib/systemd/system/basic.target.wants/* && \
    rm -f /lib/systemd/system/anaconda.target.wants/*

# Create bzzz directories
RUN mkdir -p /opt/bzzz /opt/bzzz/.bzzz /etc/systemd/system

# BZZZ binary
COPY ./build/bzzz /opt/bzzz/bzzz
RUN chmod +x /opt/bzzz/bzzz

# Config template
COPY ./config.yml.tmpl /opt/bzzz/.bzzz/config.yml.tmpl

# Create systemd service file
RUN cat > /etc/systemd/system/bzzz.service << 'EOF'
[Unit]
Description=BZZZ P2P Task Coordination System
After=network.target
Wants=network-online.target

[Service]
Type=simple
User=root
WorkingDirectory=/opt/bzzz
ExecStart=/opt/bzzz/bzzz -config /opt/bzzz/.bzzz/config.yml
Restart=always
RestartSec=10
StandardOutput=journal
StandardError=journal
SyslogIdentifier=bzzz

[Install]
WantedBy=multi-user.target
EOF

# Enable the service
RUN systemctl enable bzzz.service

# Create startup script that renders config and starts systemd
RUN cat > /opt/bzzz/startup.sh << 'EOF'
#!/bin/bash
set -e

# Render config from template
envsubst < /opt/bzzz/.bzzz/config.yml.tmpl > /opt/bzzz/.bzzz/config.yml

# Start systemd
exec /lib/systemd/systemd
EOF

RUN chmod +x /opt/bzzz/startup.sh

# Working directory
WORKDIR /opt/bzzz

# Use systemd as init system
ENTRYPOINT ["/opt/bzzz/startup.sh"]