136 lines
4.9 KiB
C#
136 lines
4.9 KiB
C#
using System;
|
|
using System.IO;
|
|
using System.Collections.Generic;
|
|
using LeanCloud.Storage;
|
|
|
|
namespace LeanCloud.Realtime {
|
|
/// <summary>
|
|
/// 文件消息
|
|
/// </summary>
|
|
public class LCIMFileMessage : LCIMTextMessage {
|
|
/// <summary>
|
|
/// 文件
|
|
/// </summary>
|
|
public LCFile File {
|
|
get; set;
|
|
}
|
|
|
|
/// <summary>
|
|
/// 文件大小
|
|
/// </summary>
|
|
public int Size {
|
|
get; private set;
|
|
}
|
|
|
|
/// <summary>
|
|
/// 文件扩展名
|
|
/// </summary>
|
|
public string Format {
|
|
get; private set;
|
|
}
|
|
|
|
/// <summary>
|
|
/// 文件链接
|
|
/// </summary>
|
|
public string Url {
|
|
get {
|
|
return File.Url;
|
|
}
|
|
}
|
|
|
|
internal LCIMFileMessage() : base() {
|
|
|
|
}
|
|
|
|
public LCIMFileMessage(LCFile file) : base() {
|
|
File = file;
|
|
}
|
|
|
|
public override int MessageType => FileMessageType;
|
|
|
|
internal override Dictionary<string, object> Encode() {
|
|
if (File == null) {
|
|
throw new Exception("File MUST NOT be null before sent.");
|
|
}
|
|
if (string.IsNullOrEmpty(File.ObjectId)) {
|
|
throw new Exception("File MUST be saved before sent.");
|
|
}
|
|
Dictionary<string, object> fileData = new Dictionary<string, object> {
|
|
{ MessageDataObjectIdKey, File.ObjectId }
|
|
};
|
|
// 链接
|
|
if (!string.IsNullOrEmpty(File.Url)) {
|
|
fileData[MessageDataUrlKey] = File.Url;
|
|
}
|
|
// 元数据
|
|
Dictionary<string, object> metaData = new Dictionary<string, object>();
|
|
// 文件名
|
|
if (!string.IsNullOrEmpty(File.Name)) {
|
|
metaData[MessageDataMetaNameKey] = File.Name;
|
|
}
|
|
// 文件扩展名
|
|
string format = null;
|
|
if (File.MetaData != null &&
|
|
File.MetaData.TryGetValue(MessageDataMetaFormatKey, out object f)) {
|
|
// 优先使用用户设置值
|
|
format = f as string;
|
|
} else if (File.Name != null &&
|
|
!string.IsNullOrEmpty(Path.GetExtension(File.Name))) {
|
|
// 根据文件名推测
|
|
format = Path.GetExtension(File.Name)?.Replace(".", string.Empty);
|
|
} else if (File.Url != null &&
|
|
!string.IsNullOrEmpty(Path.GetExtension(File.Url))) {
|
|
// 根据 url 推测
|
|
format = Path.GetExtension(File.Url)?.Replace(".", string.Empty);
|
|
}
|
|
if (!string.IsNullOrEmpty(format)) {
|
|
metaData[MessageDataMetaFormatKey] = format;
|
|
}
|
|
// 文件大小
|
|
if (File.MetaData != null &&
|
|
File.MetaData.TryGetValue(MessageDataMetaSizeKey, out object size)) {
|
|
metaData[MessageDataMetaSizeKey] = size;
|
|
}
|
|
fileData[MessageDataMetaDataKey] = metaData;
|
|
|
|
Dictionary<string, object> data = base.Encode();
|
|
data[MessageFileKey] = fileData;
|
|
return data;
|
|
}
|
|
|
|
internal override void Decode(Dictionary<string, object> msgData) {
|
|
base.Decode(msgData);
|
|
|
|
if (msgData.TryGetValue(MessageFileKey, out object fileDataObject)) {
|
|
Dictionary<string, object> fileData = fileDataObject as Dictionary<string, object>;
|
|
if (fileData == null) {
|
|
return;
|
|
}
|
|
if (fileData.TryGetValue(MessageDataObjectIdKey, out object objectIdObject)) {
|
|
string objectId = objectIdObject as string;
|
|
File = LCObject.CreateWithoutData(LCFile.CLASS_NAME, objectId) as LCFile;
|
|
if (fileData.TryGetValue(MessageDataUrlKey, out object url)) {
|
|
File.Url = url as string;
|
|
}
|
|
if (fileData.TryGetValue(MessageDataMetaDataKey, out object metaData)) {
|
|
File.MetaData = metaData as Dictionary<string, object>;
|
|
if (File.MetaData == null) {
|
|
return;
|
|
}
|
|
if (File.MetaData.TryGetValue(MessageDataMetaNameKey, out object name)) {
|
|
File.Name = name as string;
|
|
}
|
|
if (File.MetaData.TryGetValue(MessageDataMetaSizeKey, out object size) &&
|
|
int.TryParse(size as string, out int s)) {
|
|
Size = s;
|
|
}
|
|
if (File.MetaData.TryGetValue(MessageDataMetaFormatKey, out object format)) {
|
|
Format = format as string;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|