#!/bin/bash
# Rust Game Server Modul für gameadm
# Ersetzt die Funktionalität von rustadm

# Konfigurationsdatei
CONFIG_FILE="/etc/rust-server.conf"

# Konfiguration laden
if [[ -f "$CONFIG_FILE" ]]; then
    # shellcheck disable=SC1090
    source "$CONFIG_FILE"
else
    log "WARN" "Konfig nicht gefunden: $CONFIG_FILE"
fi

# Standardwerte (können durch Konfig überschrieben werden)
CONTAINER_NAME=${CONTAINER_NAME:-rust-game}
IMAGE=${IMAGE:-docker.io/didstopia/rust-server:latest}
DATA_DIR=${DATA_DIR:-/srv/rust}
PORT=${PORT:-28015}
RCON_PORT=${RCON_PORT:-28016}
MAXPLAYERS=${MAXPLAYERS:-4}
RUST_SERVER_NAME=${RUST_SERVER_NAME:-"PurePowerPh1L's Rust Server"}
SERVER_SECRET_FILE=${SERVER_SECRET_FILE:-/root/secrets/rust_server_password}
RCON_SECRET_FILE=${RCON_SECRET_FILE:-/root/secrets/rust_rcon_password}
EXTRA_ARGS=${EXTRA_ARGS:-"-batchmode -load -nographics +server.secure 1"}
MEMORY_LIMIT=${MEMORY_LIMIT:-""}

# Hilfsfunktionen
ensure_prereqs() {
    mkdir -p "$DATA_DIR"
    if [[ ! -s "$SERVER_SECRET_FILE" ]]; then
        log "ERROR" "Server-Passwortdatei fehlt oder ist leer: $SERVER_SECRET_FILE"
        exit 1
    fi
    if [[ ! -s "$RCON_SECRET_FILE" ]]; then
        log "ERROR" "RCON-Passwortdatei fehlt oder ist leer: $RCON_SECRET_FILE"
        exit 1
    fi
}

is_running() {
    podman inspect -f '{{.State.Running}}' "$CONTAINER_NAME" 2>/dev/null | grep -q true
}

# Befehle
cmd_start() {
    ensure_prereqs
    if is_running; then
        log "INFO" "Bereits gestartet: $CONTAINER_NAME"
        exit 0
    fi
    
    # Beendeten Container entfernen falls vorhanden
    if podman inspect "$CONTAINER_NAME" >/dev/null 2>&1; then
        podman rm -f "$CONTAINER_NAME" >/dev/null 2>&1 || true
    fi
    
    log "INFO" "Starte $CONTAINER_NAME ..."
    podman run -d \
      --name "$CONTAINER_NAME" \
      --restart=always \
      ${MEMORY_LIMIT:+--memory="$MEMORY_LIMIT"} \
      -p ${PORT}:${PORT}/udp \
      -p ${PORT}:${PORT}/tcp \
      -p ${RCON_PORT}:${RCON_PORT}/tcp \
      -v "$DATA_DIR:/steamcmd" \
      -e RUST_SERVER_NAME="$RUST_SERVER_NAME" \
      -e RUST_SERVER_MAXPLAYERS="$MAXPLAYERS" \
      -e RUST_SERVER_PORT="$PORT" \
      -e RUST_RCON_PORT="$RCON_PORT" \
      -e RUST_RCON_PASSWORD="$(cat "$RCON_SECRET_FILE")" \
      -e RUST_SERVER_STARTUP_ARGUMENTS="$EXTRA_ARGS +server.password $(cat "$SERVER_SECRET_FILE")" \
      "$IMAGE" >/dev/null
    
    log "INFO" "Rust Server gestartet."
}

cmd_stop() {
    if ! podman inspect "$CONTAINER_NAME" >/dev/null 2>&1; then
        log "INFO" "Container existiert nicht: $CONTAINER_NAME"
        exit 0
    fi
    
    log "INFO" "Stoppe $CONTAINER_NAME ..."
    podman stop -t 45 "$CONTAINER_NAME" >/dev/null 2>&1 || true
    podman rm "$CONTAINER_NAME" >/dev/null 2>&1 || true
    log "INFO" "Rust Server gestoppt."
}

cmd_restart() {
    cmd_stop || true
    cmd_start
}

cmd_status() {
    if is_running; then
        echo "RUNNING"
        podman ps --filter name="^${CONTAINER_NAME}$" --format '{{.Names}}\t{{.Status}}\t{{.Ports}}'
    else
        if podman inspect "$CONTAINER_NAME" >/dev/null 2>&1; then
            echo "EXITED"
        else
            echo "NOT FOUND"
        fi
    fi
}

cmd_logs() {
    if ! podman inspect "$CONTAINER_NAME" >/dev/null 2>&1; then
        log "ERROR" "Container $CONTAINER_NAME existiert nicht"
        exit 1
    fi
    podman logs --tail=200 "$CONTAINER_NAME"
}

cmd_follow() {
    if ! podman inspect "$CONTAINER_NAME" >/dev/null 2>&1; then
        log "ERROR" "Container $CONTAINER_NAME existiert nicht"
        exit 1
    fi
    podman logs -f "$CONTAINER_NAME"
}

cmd_update() {
    log "INFO" "Pull $IMAGE ..."
    podman pull "$IMAGE"
    log "INFO" "Rust Server Image aktualisiert."
}

cmd_help() {
    cat <<EOF
Rust Game Server Verwaltung

Verwendung:
  gameadm rust <befehl>

Verfügbare Befehle:
  start   - Startet Rust Game Server
  stop    - Stoppt Rust Game Server
  restart - Startet Server neu
  status  - Zeigt Server-Status
  logs    - Zeigt Server-Logs (letzte 200 Zeilen)
  follow  - Folgt Logs in Echtzeit
  update  - Aktualisiert Server-Image
  help    - Zeigt diese Hilfe

Konfiguration: $CONFIG_FILE
Container: $CONTAINER_NAME
Port: $PORT (UDP/TCP)
RCON: $RCON_PORT (TCP)
Daten: $DATA_DIR
EOF
}