#!/usr/bin/env bash
# Show current download status: process alive, log tail, disk usage.
set -euo pipefail

ROOT=/mnt/local-fast/opd_zt
LOG_DIR="$ROOT/logs"
PID_FILE="$LOG_DIR/download.pid"

echo "=== process ==="
if [[ -f "$PID_FILE" ]]; then
    PID=$(cat "$PID_FILE")
    if kill -0 "$PID" 2>/dev/null; then
        echo "RUNNING  pid=$PID"
        ps -o pid,etime,rss,cmd -p "$PID" 2>/dev/null || true
    else
        echo "NOT RUNNING (pid $PID is dead — check log for exit reason)"
    fi
else
    echo "no pid file at $PID_FILE"
fi

echo
echo "=== disk usage under data/raw ==="
du -sh "$ROOT/data/raw"/* 2>/dev/null || echo "(no data yet)"
echo
df -h "$ROOT" | tail -2

echo
echo "=== last 30 lines of latest log ==="
LATEST="$LOG_DIR/download.latest.log"
if [[ -f "$LATEST" ]]; then
    tail -30 "$(readlink -f "$LATEST")"
else
    echo "no log yet"
fi