#!/bin/bash

# ===================================
# 训练监控脚本
# ===================================

LOG_DIR="./training_logs"
EXP_NAME="trajectory_a40_temporal_optimized"

# 检查是否有正在运行的训练
check_training_status() {
    echo "=== 训练状态检查 ==="
    
    if [ -f "${LOG_DIR}/training_${EXP_NAME}.pid" ]; then
        PID=$(cat "${LOG_DIR}/training_${EXP_NAME}.pid")
        if ps -p $PID > /dev/null 2>&1; then
            echo "✅ 训练正在运行 (PID: $PID)"
            return 0
        else
            echo "❌ 训练进程已停止 (PID: $PID)"
            return 1
        fi
    else
        echo "❌ 未找到训练进程文件"
        return 1
    fi
}

# 显示GPU使用情况
show_gpu_status() {
    echo ""
    echo "=== GPU状态 ==="
    nvidia-smi --query-gpu=index,name,memory.used,memory.total,utilization.gpu,temperature.gpu --format=csv,noheader,nounits
}

# 显示最新日志
show_latest_logs() {
    echo ""
    echo "=== 最新训练日志 (最后20行) ==="
    
    # 找到最新的日志文件
    LATEST_LOG=$(ls -t ${LOG_DIR}/training_${EXP_NAME}_*.log 2>/dev/null | head -1)
    
    if [ -n "$LATEST_LOG" ]; then
        echo "日志文件: $LATEST_LOG"
        echo "----------------------------------------"
        tail -20 "$LATEST_LOG"
    else
        echo "未找到日志文件"
    fi
}

# 显示实验目录状态
show_experiment_status() {
    echo ""
    echo "=== 实验目录状态 ==="
    
    # 查找最新的实验目录
    LATEST_EXP=$(ls -td Experiments/trajectory_a40_temporal_optimized_* 2>/dev/null | head -1)
    
    if [ -n "$LATEST_EXP" ]; then
        echo "实验目录: $LATEST_EXP"
        echo "创建时间: $(stat -c %y "$LATEST_EXP")"
        
        # 检查模型保存情况
        if [ -d "$LATEST_EXP/models" ]; then
            MODEL_COUNT=$(ls "$LATEST_EXP/models"/*.pt 2>/dev/null | wc -l)
            echo "已保存模型数量: $MODEL_COUNT"
        fi
        
        # 检查日志文件
        if [ -d "$LATEST_EXP/logs" ]; then
            LOG_SIZE=$(du -sh "$LATEST_EXP/logs" | cut -f1)
            echo "日志文件大小: $LOG_SIZE"
        fi
    else
        echo "未找到实验目录"
    fi
}

# 实时监控模式
real_time_monitor() {
    echo "进入实时监控模式 (按Ctrl+C退出)..."
    echo ""
    
    while true; do
        clear
        echo "====================================="
        echo "ProDiff 训练实时监控"
        echo "时间: $(date)"
        echo "====================================="
        
        check_training_status
        show_gpu_status
        show_latest_logs
        show_experiment_status
        
        echo ""
        echo "====================================="
        echo "5秒后刷新... (Ctrl+C 退出)"
        echo "====================================="
        
        sleep 5
    done
}

# 主菜单
show_menu() {
    echo "====================================="
    echo "ProDiff 训练监控工具"
    echo "====================================="
    echo "1. 检查训练状态"
    echo "2. 查看GPU状态"
    echo "3. 查看最新日志"
    echo "4. 查看实验状态"
    echo "5. 实时监控模式"
    echo "6. 停止训练"
    echo "7. 退出"
    echo "====================================="
}

# 停止训练
stop_training() {
    if [ -f "${LOG_DIR}/training_${EXP_NAME}.pid" ]; then
        PID=$(cat "${LOG_DIR}/training_${EXP_NAME}.pid")
        if ps -p $PID > /dev/null 2>&1; then
            echo "正在停止训练进程 (PID: $PID)..."
            kill $PID
            sleep 2
            if ps -p $PID > /dev/null 2>&1; then
                echo "强制停止..."
                kill -9 $PID
            fi
            echo "✅ 训练已停止"
        else
            echo "训练进程已经停止"
        fi
    else
        echo "未找到训练进程文件"
    fi
}

# 如果提供了参数，直接执行对应功能
case "$1" in
    "status")
        check_training_status
        show_gpu_status
        ;;
    "logs")
        show_latest_logs
        ;;
    "monitor")
        real_time_monitor
        ;;
    "stop")
        stop_training
        ;;
    *)
        # 交互模式
        while true; do
            show_menu
            read -p "请选择 (1-7): " choice
            case $choice in
                1)
                    check_training_status
                    ;;
                2)
                    show_gpu_status
                    ;;
                3)
                    show_latest_logs
                    ;;
                4)
                    show_experiment_status
                    ;;
                5)
                    real_time_monitor
                    ;;
                6)
                    stop_training
                    ;;
                7)
                    echo "退出监控工具"
                    exit 0
                    ;;
                *)
                    echo "无效选择"
                    ;;
            esac
            echo ""
            read -p "按回车继续..."
        done
        ;;
esac