public async Task ShareFileToChannelAsync(int channelId, int fileId, int userId, int workspaceId)
{
if (!(await EligibleForTheFileAsync(fileId, userId, workspaceId)))
{
throw new ArgumentException($"File access required.");
}
var message = new ChannelMessage(channelId, string.Empty, userId, workspaceId, true);
var file = await _context.Files.SingleAsync(f => f.Id == fileId);
message.AddMessageFileAttachment(file);
await PostMessageToChannelCommonAsync(message);
}
public async Task PostFileMessageToChannelAsync(IList <IFormFile> files, int channelId, int userId, int workspaceId)
{
if (!files.Any())
{
throw new ArgumentException($"File list is empty.");
}
var savedFiles = await UploadAndSaveFilesForMessageAsync(files, userId, workspaceId);
var message = new ChannelMessage(channelId, string.Empty, userId, workspaceId, true);
foreach (var file in savedFiles)
{
message.AddMessageFileAttachment(file);
}
await PostMessageToChannelCommonAsync(message);
}