FROM python:3.11-slim-bookworm

# -----------------------------------------------------
# Set Environment Variables
# -----------------------------------------------------
ENV PYTHONUNBUFFERED=1
ENV MINECRAFT_SERVER_DIR=/app/minecraft_server
ENV SERVER_JAR_NAME=server.jar
# NOTE: Adjust these memory values if your environment has more or less RAM.
ENV MAX_MEMORY=10G 
ENV MIN_MEMORY=1G
ENV WEB_PORT=7860
ENV SERVER_PORT=25565

# -----------------------------------------------------
# 1. Install core system dependencies
# -----------------------------------------------------
RUN apt-get update && apt-get install -y \
    curl \
    wget \
    unzip \
    zip \
    screen \
    procps \
    net-tools \
    ca-certificates \
    file \
    && rm -rf /var/lib/apt/lists/*

# -----------------------------------------------------
# 2. CRITICAL FIX: Create mcuser and Directories/Permissions
#    This must be done before the 'chown' commands in the playit block.
# -----------------------------------------------------
# Create app user and directories
RUN groupadd -r mcuser -g 1000 && \
    useradd -r -u 1000 -g mcuser mcuser

WORKDIR /app

# Create necessary directories
RUN mkdir -p ${MINECRAFT_SERVER_DIR} \
    ${MINECRAFT_SERVER_DIR}/mods \
    ${MINECRAFT_SERVER_DIR}/world \
    ${MINECRAFT_SERVER_DIR}/config \
    ${MINECRAFT_SERVER_DIR}/logs \
    /app/backups \
    /app/uploads \
    /app/static \
    /app/templates \
    && chown -R mcuser:mcuser /app

# -----------------------------------------------------
# 3. Install PlayIt.gg Agent (DIRECT DOWNLOAD & VERIFICATION) 🔑
# -----------------------------------------------------
USER root
# We keep curl install/removal here for efficiency if it wasn't installed above
RUN apt-get update && \
    apt-get install -y curl --no-install-recommends && \
    curl -L -o /usr/local/bin/playit https://github.com/playit-cloud/playit-agent/releases/latest/download/playit-linux-x86-64 && \    chmod +x /usr/local/bin/playit && \
    chown mcuser:mcuser /usr/local/bin/playit && \
    apt-get remove -y curl && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

# -----------------------------------------------------
# 4. Install Java (Temurin-21)
# -----------------------------------------------------
# Note: Since curl is already installed, the first line of the original Java install is redundant.
RUN apt-get update && apt-get install -y gnupg dirmngr && rm -rf /var/lib/apt/lists/*
RUN mkdir -p /etc/apt/keyrings && \
    wget -O - https://packages.adoptium.net/artifactory/api/gpg/key/public | tee /etc/apt/keyrings/adoptium.asc && \
    echo "deb [signed-by=/etc/apt/keyrings/adoptium.asc] https://packages.adoptium.net/artifactory/deb $(awk -F= '/^VERSION_CODENAME/{print$2}' /etc/os-release) main" | tee /etc/apt/sources.list.d/adoptium.list && \
    apt-get update && \
    apt-get install -y temurin-21-jdk && \
    rm -rf /var/lib/apt/lists/*

# Set Java environment
ENV JAVA_HOME=/usr/lib/jvm/temurin-21-jdk-amd64
ENV PATH="${JAVA_HOME}/bin:${PATH}"

# -----------------------------------------------------
# 5. Install Python Dependencies
# -----------------------------------------------------
# Copy requirements first for caching
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Force a rebuild when the installation changes
ENV CACHE_BUSTER=20251207_v33

# Copy application files (including the server.jar and other files)
# The CHOWN is redundant here since the final chown -R /app was done earlier
COPY . .

# --- Minecraft Setup ---
# Uses ENV vars for cleaner execution
RUN cp /app/${SERVER_JAR_NAME} ${MINECRAFT_SERVER_DIR}/${SERVER_JAR_NAME} && \
    echo "eula=true" > ${MINECRAFT_SERVER_DIR}/eula.txt && \
    chown -R mcuser:mcuser ${MINECRAFT_SERVER_DIR}
# --- End Setup ---

# Create default server.properties
RUN printf 'server-port=25565\n\
max-players=2\n\
online-mode=false\n\
enable-command-block=false\n\
spawn-protection=0\n\
view-distance=6\n\
simulation-distance=8\n\
motd=\\u00A7b\\u00A7lHF Spaces MC Server\\u00A7r - \\u00A7aOnline\n\
difficulty=normal\n\
gamemode=survival\n\
level-name=world\n\
pvp=true\n\
allow-flight=true\n\
white-list=false\n\
enforce-whitelist=false\n\
max-tick-time=60000\n\
network-compression-threshold=256\n\
enable-status=true\n\
enable-query=false\n' > ${MINECRAFT_SERVER_DIR}/server.properties

# Expose ports (7860 for web UI, 25565 for internal MC server)
EXPOSE ${WEB_PORT} ${SERVER_PORT}

# -----------------------------------------------------
# 6. Prepare Start Script
# -----------------------------------------------------
# Assuming 'start.sh' is copied in the previous COPY . . command
RUN chmod +x ./start.sh

# Switch to non-root user
USER mcuser

# -----------------------------------------------------
# 7. Update Start command to use the shell wrapper
# -----------------------------------------------------
CMD ["./start.sh"]