/// <summary>
/// 附加現有檔案
/// </summary>
/// <param name="context">資料庫內容</param>
/// <param name="fileId">檔案唯一識別號</param>
/// <param name="stream">檔案串流</param>
/// <returns>檔案實例</returns>
public static async Task <File> Append(HHStorageContext context, Guid fileId, Stream stream)
{
var file = context.File.SingleOrDefault(x => x.Id == fileId);
if (file == null)
{
throw new NotFoundException("找不到指定檔案");
}
try {
using (FileStream fileStream = System.IO.File.OpenWrite(GetFilePathById(file.Id))) {
await stream.CopyToAsync(fileStream);
await fileStream.FlushAsync();
}
} catch {
throw new OperationInterruptedException("檔案上傳過程遭到中斷");
}
file.Size += stream.Length;
await context.SaveChangesAsync();
return(file);
}
/// <summary>
/// 建立新儲存體
/// </summary>
/// <param name="context">資料庫內容</param>
/// <param name="userId">使用者帳號</param>
/// <param name="name">名稱</param>
/// <returns>儲存體實例</returns>
public static async Task <Repository> Create(HHStorageContext context, string userId, string name)
{
if (userId == null)
{
throw new NotNullException("使用者帳號不該為null");
}
if (!context.User.Any(x => x.Id == userId))
{
throw new NotFoundException("找不到指定使用者");
}
if (name == null)
{
throw new NotNullException("儲存體名稱不該為null");
}
var result = new Repository()
{
Name = name,
UserId = userId
};
context.Repository.Add(result);
await context.SaveChangesAsync();
return(result);
}
/// <summary>
/// 刪除指定使用者帳戶所有資料
/// </summary>
/// <param name="context">資料庫內容</param>
/// <param name="id">使用者帳戶</param>
/// <returns>非同步操作</returns>
public static async Task Delete(HHStorageContext context, string id)
{
if (id == null)
{
throw new NotNullException("使用者帳戶名稱不該為null");
}
if (id.ToLower() == "admin")
{
throw new OperationException("系統管理者帳戶admin不可刪除");
}
var targetUser = context.User.SingleOrDefault(x => x.Id == id);
if (targetUser == null)
{
throw new NotFoundException("找不到指定的使用者");
}
// 刪除檔案
foreach (var file in context.File.Where(x => x.UserId == id))
{
await EF.File.Delete(context, file.Id);
}
context.RemoveRange(context.WebHook.Where(x => x.UserId == id));
context.RemoveRange(context.Origin.Where(x => x.UserId == id));
context.RemoveRange(context.Repository.Where(x => x.UserId == id));
await context.SaveChangesAsync();
}
/// <summary>
/// 使用帳號與密碼登入並取得使用者實例
/// </summary>
/// <param name="context">資料庫內容</param>
/// <param name="id">帳號</param>
/// <param name="password">密碼</param>
/// <returns>使用者實例</returns>
public static async Task <User> Login(HHStorageContext context, string id, string password)
{
if (id == null || password == null)
{
throw new NotNullException("使用者帳戶名稱與密碼不該為null");
}
var passwordHash = password.ToHashString <MD5>();
return(context.User.SingleOrDefault(x => x.Id == id && x.Password == passwordHash));
}
/// <summary>
/// 建立新檔案
/// </summary>
/// <param name="context">資料庫內容</param>
/// <param name="userId">使用者帳號</param>
/// <param name="repositoryId">儲存庫唯一識別號</param>
/// <param name="stream">檔案串流</param>
/// <param name="contentType">檔案ContentType</param>
/// <param name="name">名稱</param>
/// <param name="accessModifier">存取限制</param>
/// <returns>檔案實例</returns>
public static async Task <File> Create(
HHStorageContext context,
string userId,
Guid repositoryId,
Stream stream,
string contentType,
string name = null,
AccessModifierTypes accessModifier = AccessModifierTypes.Private
)
{
if (userId == null)
{
throw new NotNullException("使用者帳號不該為null");
}
if (!context.Repository.Any(x => x.Id == repositoryId && x.UserId == userId))
{
throw new NotFoundException("找不到該使用者指定儲存庫");
}
var result = new File()
{
UserId = userId,
RepositoryId = repositoryId,
ContentType = contentType
};
result.Name = name;
result.AccessModifier = accessModifier;
result.Size = stream.Length;
try {
using (FileStream fileStream = System.IO.File.Create(GetFilePathById(result.Id))) {
await stream.CopyToAsync(fileStream);
await fileStream.FlushAsync();
}
} catch {
throw new OperationInterruptedException("檔案上傳過程遭到中斷");
}
context.File.Add(result);
await context.SaveChangesAsync();
return(result);
}
/// <summary>
/// 刪除指定檔案
/// </summary>
/// <param name="context">資料庫內容</param>
/// <param name="fileId">檔案唯一識別號</param>
/// <returns>非同步操作</returns>
public static async Task Delete(HHStorageContext context, Guid fileId)
{
var file = context.File.SingleOrDefault(x => x.Id == fileId);
if (file == null)
{
throw new NotFoundException("找不到指定檔案");
}
// 刪除實體檔案
if (System.IO.File.Exists(GetFilePathById(fileId)))
{
System.IO.File.Delete(GetFilePathById(fileId));
}
context.File.Remove(file);
await context.SaveChangesAsync();
}
/// <summary>
/// 建立新使用者帳戶
/// </summary>
/// <param name="context">資料庫內容</param>
/// <param name="id">帳戶</param>
/// <param name="password">密碼</param>
/// <returns>使用者實例</returns>
public static async Task <User> Create(HHStorageContext context, string id, string password)
{
if (id == null || password == null)
{
throw new NotNullException("使用者帳戶名稱與密碼不該為null");
}
if (context.User.Any(x => x.Id == id))
{
throw new DuplicateException("使用者帳戶名稱重複");
}
var result = new User()
{
Id = id, Password = password.ToHashString <MD5>()
};
await context.User.AddAsync(result);
return(result);
}
/// <summary>
/// 刪除儲存體
/// </summary>
/// <param name="context">資料庫內容</param>
/// <param name="id">儲存庫唯一識別號</param>
/// <returns>非同步操作</returns>
public static async Task Delete(HHStorageContext context, Guid id)
{
var repository = context.Repository.SingleOrDefault(x => x.Id == id);
if (repository == null)
{
throw new NotFoundException("找不到指定的儲存庫");
}
foreach (var file in context.File.Where(x => x.RepositoryId == id))
{
await EF.File.Delete(context, file.Id);
}
context.RemoveRange(context.WebHook.Where(x => x.RepositoryId == id));
context.RemoveRange(context.Origin.Where(x => x.RepositoryId == id));
context.Repository.Remove(repository);
await context.SaveChangesAsync();
}
