GHZMRNavigatorProXR/Assets/Scripts/Blue/Service/IPointService.cs

using System;
using System.Collections;
using System.IO;
using Blue;
using UnityEngine;
using UnityEngine.Networking;

public interface IPointService:IService
{
    /// <summary>
    /// 获取点坐标数据
    /// </summary>
    /// <param name="methodName">后缀</param>
    void GetPoint(string methodName, Action<string> callback);
    /// <summary>
    /// 获取点云文件的下载链接
    /// </summary>
    /// <param name="methodName">后缀</param>
    /// <param name="projectId">场景ID</param>
    /// <param name="fileType">文件类型</param>
    void GetPointFileDownloadUrl(string methodName, string projectId, PointFileType fileType, Action<string> callback);

    /// <summary>
    /// 根据点云文件的下载链接去下载点云文件
    /// </summary>
    /// <param name="downloadingUrl">点云文件的下载链接</param>
    /// <param name="fileType">文件类型</param>
    /// <param name="sceneID">场景ID</param>
    void DownloadPointFile(string downloadingUrl, PointFileType fileType);
}

public class PointService : IPointService
{
    private string UrlPointCloud;
    public void OnInit()
    {
        UrlPointCloud = "https://pro.qulivr.com/mr-navigator/v1";
    }

    public void GetPoint(string methodName, Action<string> callback)
    {
        CoroutineSystem.Instance.Start_Coroutine(GetPointRequest(methodName, callback));
    }
    public void GetPointFileDownloadUrl(string methodName, string projectId, PointFileType fileType, Action<string> callback)
    {
        string url = UrlPointCloud + methodName;
        // 创建URL
        UriBuilder uriBuilder = new UriBuilder(url);
        // 添加查询参数
        uriBuilder.Query = "projectId=" + projectId + "&fileType=" + fileType.ToString();
        // 创建UnityWebRequest
        UnityWebRequest webRequest = UnityWebRequest.Get(uriBuilder.Uri);
        webRequest.SetRequestHeader("Authorization", HttpTool.Instance.Token);
        // 发送请求
        CoroutineSystem.Instance.Start_Coroutine(GetPointGetPointFileRequest(webRequest, callback));
    }
    public void DownloadPointFile(string downloadingUrl, PointFileType fileType)
    {
        CoroutineSystem.Instance.Start_Coroutine(DownloadPointFileRequest(downloadingUrl,fileType));
    }

    #region 协程

    private IEnumerator GetPointRequest(string methodName, Action<string> callback)
    {
        string url = UrlPointCloud + methodName;
        using (UnityWebRequest webRequest = UnityWebRequest.Get(url))
        {
            webRequest.SetRequestHeader("authorization", HttpTool.Instance.Token);
            //设置header
            foreach (var v in HttpTool.Instance.RequestHeader)
            {
                webRequest.SetRequestHeader(v.Key, v.Value);
            }
            yield return webRequest.SendWebRequest();

            if (webRequest.result == UnityWebRequest.Result.ProtocolError || webRequest.result == UnityWebRequest.Result.ConnectionError)
                Debug.LogError("GetPoint failed: " + webRequest.error + "\n" + webRequest.downloadHandler.text);
            else
                callback?.Invoke(webRequest.downloadHandler.text);
        }
    }
    private IEnumerator GetPointGetPointFileRequest(UnityWebRequest webRequest, Action<string> callback)
    {
        yield return webRequest.SendWebRequest();

        if( webRequest.result == UnityWebRequest.Result.ProtocolError || webRequest.result == UnityWebRequest.Result.ConnectionError)
            Debug.LogError("GetPointFileDownloadUrl failed: " + webRequest.error);
        else
            callback?.Invoke(webRequest.downloadHandler.text);
    }

    /// <summary>
    /// 下载点云文件 UnityWebRequest
    /// </summary>
    /// <param name="downloadingUrl">下载的Url</param>
    /// <param name="fileType">文件类型</param>
    /// <returns></returns>
    private IEnumerator DownloadPointFileRequest(string downloadingUrl, PointFileType fileType)
    {
        string fileName = this.GetUtility<GetFileNameUtility>().GetFileName(downloadingUrl, fileType.ToString());

        if (!File.Exists(Application.persistentDataPath + "/Map Data/" + fileName))
        {
            Debug.LogWarning("文件不存在，下载文件");
            using (UnityWebRequest webRequestPoint = UnityWebRequest.Get(downloadingUrl))
            {
                webRequestPoint.timeout = 30;//设置超时，若webRequest.SendWebRequest()连接超时会返回，且isNetworkError为true

                yield return webRequestPoint.SendWebRequest();

                if (webRequestPoint.result == UnityWebRequest.Result.ProtocolError || webRequestPoint.result == UnityWebRequest.Result.ConnectionError)
                    Debug.Log("Download Point Cloud Error:" + webRequestPoint.error);
                else
                {
                    if (Directory.Exists(Application.persistentDataPath + "/Map Data") == false) // Map Data文件夹不存在
                        Directory.CreateDirectory(Application.persistentDataPath + "/Map Data");
                    if (System.IO.File.Exists(Application.persistentDataPath + "/Map Data/" + fileName)) // Map Data/fileName 文件存在则删除
                        System.IO.File.Delete(Application.persistentDataPath + "/Map Data/" + fileName);
                    
                    var File = webRequestPoint.downloadHandler.data; //获取二进制数据
                    FileStream nFile = new FileStream(Application.persistentDataPath + "/Map Data/" + fileName, FileMode.Create); //创建文件写入对象
                    nFile.Write(File, 0, File.Length); //写入数据
                    nFile.Close(); nFile.Dispose(); nFile = null;//关闭当前流并释放与之相关联的所有系统资源
                    if (fileType == PointFileType.bytes)
                        this.TriggerEvent(new LoadMapFileEvent() { fileName = fileName });
                }
            }
               
        }
        else
        {
            Debug.LogWarning("文件已存在");
            if (fileType == PointFileType.bytes)
                this.TriggerEvent(new LoadMapFileEvent() { fileName = fileName });
        }
    }

    #endregion
}