EnergyEfficiencyManagement/Assets/Zion/Scripts/UIItem/AttachmentItem.cs

using System;
using UnityEngine;
using UnityEngine.UI;
using TMPro;

/// <summary>
/// 附件项UI组件
/// </summary>
public class AttachmentItem : MonoBehaviour
{
    [Header("UI组件")]
    public Image iconImage;          // 文件图标
    public TextMeshProUGUI fileNameText;  // 文件名文本
    public TextMeshProUGUI fileSizeText;  // 文件大小文本
    public Button removeButton;      // 删除按钮
    public Button downloadButton;    // 下载/打开按钮
    
    public string filePath;         // 文件路径
    private Action<AttachmentItem> onRemove;  // 删除回调

    /// <summary>
    /// 初始化附件项
    /// </summary>
    /// <param name="filePath">文件路径</param>
    /// <param name="fileIcon">文件图标</param>
    /// <param name="onRemoveCallback">删除回调</param>
    public void Initialize(string filePath, Sprite fileIcon, Action<AttachmentItem> onRemoveCallback = null)
    {
        this.filePath = filePath;
        this.onRemove = onRemoveCallback;

        // 设置文件图标
        if (iconImage != null)
        {
            iconImage.sprite = fileIcon;
            iconImage.preserveAspect = true;
        }

        // 设置文件名
        if (fileNameText != null)
        {
            fileNameText.text = System.IO.Path.GetFileName(filePath);
        }

        // 设置文件大小
        if (fileSizeText != null)
        {
            long fileSize = new System.IO.FileInfo(filePath).Length;
            fileSizeText.text = FormatFileSize(fileSize);
        }

        // 设置删除按钮事件
        if (removeButton != null)
        {
            removeButton.onClick.RemoveAllListeners();
            removeButton.onClick.AddListener(OnRemoveClicked);
        }

        // 设置下载/打开按钮事件
        if (downloadButton != null)
        {
            downloadButton.onClick.RemoveAllListeners();
            downloadButton.onClick.AddListener(OnOpenFileClicked);
        }
    }

    /// <summary>
    /// 删除按钮点击事件
    /// </summary>
    private void OnRemoveClicked()
    {
        if (onRemove != null)
        {
            onRemove(this);
        }
        else
        {
            // 如果没有外部回调，则直接销毁自身
            Destroy(gameObject);
        }
    }

    /// <summary>
    /// 打开文件按钮点击事件
    /// </summary>
    private void OnOpenFileClicked()
    {
        if (!string.IsNullOrEmpty(filePath) && System.IO.File.Exists(filePath))
        {
            // 在不同平台上打开文件
#if UNITY_EDITOR || UNITY_STANDALONE_WIN || UNITY_STANDALONE_OSX
            try
            {
                System.Diagnostics.Process.Start(filePath);
            }
            catch (Exception e)
            {
                Debug.LogError($"无法打开文件: {e.Message}");
            }
#elif UNITY_ANDROID || UNITY_IOS
            // 移动平台需要特殊处理
            Debug.Log("移动平台打开文件功能待实现");
#endif
        }
        else
        {
            Debug.LogWarning("文件不存在: " + filePath);
        }
    }

    /// <summary>
    /// 格式化文件大小
    /// </summary>
    /// <param name="bytes">字节数</param>
    /// <returns>格式化的文件大小字符串</returns>
    private string FormatFileSize(long bytes)
    {
        string[] sizes = { "B", "KB", "MB", "GB" };
        int order = 0;
        double len = bytes;
        
        while (len >= 1024 && order < sizes.Length - 1)
        {
            order++;
            len = len / 1024;
        }

        return $"{len:F2} {sizes[order]}";
    }

    /// <summary>
    /// 获取文件路径
    /// </summary>
    /// <returns>文件路径</returns>
    public string GetFilePath()
    {
        return filePath;
    }
}