diff options
Diffstat (limited to 'Timeline/Services/TimelineService.cs')
| -rw-r--r-- | Timeline/Services/TimelineService.cs | 1166 |
1 files changed, 0 insertions, 1166 deletions
diff --git a/Timeline/Services/TimelineService.cs b/Timeline/Services/TimelineService.cs deleted file mode 100644 index 4bcae596..00000000 --- a/Timeline/Services/TimelineService.cs +++ /dev/null @@ -1,1166 +0,0 @@ -using Microsoft.EntityFrameworkCore;
-using Microsoft.Extensions.Logging;
-using SixLabors.ImageSharp;
-using System;
-using System.Collections.Generic;
-using System.Globalization;
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
-using Timeline.Entities;
-using Timeline.Helpers;
-using Timeline.Models;
-using Timeline.Models.Validation;
-using Timeline.Services.Exceptions;
-using static Timeline.Resources.Services.TimelineService;
-
-namespace Timeline.Services
-{
- public static class TimelineHelper
- {
- public static string ExtractTimelineName(string name, out bool isPersonal)
- {
- if (name.StartsWith("@", StringComparison.OrdinalIgnoreCase))
- {
- isPersonal = true;
- return name.Substring(1);
- }
- else
- {
- isPersonal = false;
- return name;
- }
- }
- }
-
- public enum TimelineUserRelationshipType
- {
- Own = 0b1,
- Join = 0b10,
- Default = Own | Join
- }
-
- public class TimelineUserRelationship
- {
- public TimelineUserRelationship(TimelineUserRelationshipType type, long userId)
- {
- Type = type;
- UserId = userId;
- }
-
- public TimelineUserRelationshipType Type { get; set; }
- public long UserId { get; set; }
- }
-
- public class PostData : ICacheableData
- {
-#pragma warning disable CA1819 // Properties should not return arrays
- public byte[] Data { get; set; } = default!;
-#pragma warning restore CA1819 // Properties should not return arrays
- public string Type { get; set; } = default!;
- public string ETag { get; set; } = default!;
- public DateTime? LastModified { get; set; } // TODO: Why nullable?
- }
-
- /// <summary>
- /// This define the interface of both personal timeline and ordinary timeline.
- /// </summary>
- public interface ITimelineService
- {
- /// <summary>
- /// Get the timeline last modified time (not include name change).
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <returns>The timeline info.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- Task<DateTime> GetTimelineLastModifiedTime(string timelineName);
-
- /// <summary>
- /// Get the timeline unique id.
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <returns>The timeline info.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- Task<string> GetTimelineUniqueId(string timelineName);
-
- /// <summary>
- /// Get the timeline info.
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <returns>The timeline info.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- Task<Models.Timeline> GetTimeline(string timelineName);
-
- /// <summary>
- /// Set the properties of a timeline.
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <param name="newProperties">The new properties. Null member means not to change.</param>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> or <paramref name="newProperties"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- Task ChangeProperty(string timelineName, TimelineChangePropertyRequest newProperties);
-
- /// <summary>
- /// Get all the posts in the timeline.
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <param name="modifiedSince">The time that posts have been modified since.</param>
- /// <param name="includeDeleted">Whether include deleted posts.</param>
- /// <returns>A list of all posts.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- Task<List<TimelinePost>> GetPosts(string timelineName, DateTime? modifiedSince = null, bool includeDeleted = false);
-
- /// <summary>
- /// Get the etag of data of a post.
- /// </summary>
- /// <param name="timelineName">The name of the timeline of the post.</param>
- /// <param name="postId">The id of the post.</param>
- /// <returns>The etag of the data.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- /// <exception cref="TimelinePostNotExistException">Thrown when post of <paramref name="postId"/> does not exist or has been deleted.</exception>
- /// <exception cref="TimelinePostNoDataException">Thrown when post has no data.</exception>
- /// <seealso cref="GetPostData(string, long)"/>
- Task<string> GetPostDataETag(string timelineName, long postId);
-
- /// <summary>
- /// Get the data of a post.
- /// </summary>
- /// <param name="timelineName">The name of the timeline of the post.</param>
- /// <param name="postId">The id of the post.</param>
- /// <returns>The etag of the data.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- /// <exception cref="TimelinePostNotExistException">Thrown when post of <paramref name="postId"/> does not exist or has been deleted.</exception>
- /// <exception cref="TimelinePostNoDataException">Thrown when post has no data.</exception>
- /// <seealso cref="GetPostDataETag(string, long)"/>
- Task<PostData> GetPostData(string timelineName, long postId);
-
- /// <summary>
- /// Create a new text post in timeline.
- /// </summary>
- /// <param name="timelineName">The name of the timeline to create post against.</param>
- /// <param name="authorId">The author's user id.</param>
- /// <param name="text">The content text.</param>
- /// <param name="time">The time of the post. If null, then current time is used.</param>
- /// <returns>The info of the created post.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> or <paramref name="text"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- /// <exception cref="UserNotExistException">Thrown if user of <paramref name="authorId"/> does not exist.</exception>
- Task<TimelinePost> CreateTextPost(string timelineName, long authorId, string text, DateTime? time);
-
- /// <summary>
- /// Create a new image post in timeline.
- /// </summary>
- /// <param name="timelineName">The name of the timeline to create post against.</param>
- /// <param name="authorId">The author's user id.</param>
- /// <param name="imageData">The image data.</param>
- /// <param name="time">The time of the post. If null, then use current time.</param>
- /// <returns>The info of the created post.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> or <paramref name="imageData"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- /// <exception cref="UserNotExistException">Thrown if user of <paramref name="authorId"/> does not exist.</exception>
- /// <exception cref="ImageException">Thrown if data is not a image. Validated by <see cref="ImageValidator"/>.</exception>
- Task<TimelinePost> CreateImagePost(string timelineName, long authorId, byte[] imageData, DateTime? time);
-
- /// <summary>
- /// Delete a post.
- /// </summary>
- /// <param name="timelineName">The name of the timeline to delete post against.</param>
- /// <param name="postId">The id of the post to delete.</param>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- /// <exception cref="TimelinePostNotExistException">Thrown when the post with given id does not exist or is deleted already.</exception>
- /// <remarks>
- /// First use <see cref="HasPostModifyPermission(string, long, long, bool)"/> to check the permission.
- /// </remarks>
- Task DeletePost(string timelineName, long postId);
-
- /// <summary>
- /// Delete all posts of the given user. Used when delete a user.
- /// </summary>
- /// <param name="userId">The id of the user.</param>
- Task DeleteAllPostsOfUser(long userId);
-
- /// <summary>
- /// Change member of timeline.
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <param name="membersToAdd">A list of usernames of members to add. May be null.</param>
- /// <param name="membersToRemove">A list of usernames of members to remove. May be null.</param>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- /// <exception cref="ArgumentException">Thrown when names in <paramref name="membersToAdd"/> or <paramref name="membersToRemove"/> is not a valid username.</exception>
- /// <exception cref="UserNotExistException">Thrown when one of the user to change does not exist.</exception>
- /// <remarks>
- /// Operating on a username that is of bad format or does not exist always throws.
- /// Add a user that already is a member has no effects.
- /// Remove a user that is not a member also has not effects.
- /// Add and remove an identical user results in no effects.
- /// More than one same usernames are regarded as one.
- /// </remarks>
- Task ChangeMember(string timelineName, IList<string>? membersToAdd, IList<string>? membersToRemove);
-
- /// <summary>
- /// Check whether a user can manage(change timeline info, member, ...) a timeline.
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <param name="userId">The id of the user to check on.</param>
- /// <returns>True if the user can manage the timeline, otherwise false.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- /// <remarks>
- /// This method does not check whether visitor is administrator.
- /// Return false if user with user id does not exist.
- /// </remarks>
- Task<bool> HasManagePermission(string timelineName, long userId);
-
- /// <summary>
- /// Verify whether a visitor has the permission to read a timeline.
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <param name="visitorId">The id of the user to check on. Null means visitor without account.</param>
- /// <returns>True if can read, false if can't read.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- /// <remarks>
- /// This method does not check whether visitor is administrator.
- /// Return false if user with visitor id does not exist.
- /// </remarks>
- Task<bool> HasReadPermission(string timelineName, long? visitorId);
-
- /// <summary>
- /// Verify whether a user has the permission to modify a post.
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <param name="postId">The id of the post.</param>
- /// <param name="modifierId">The id of the user to check on.</param>
- /// <param name="throwOnPostNotExist">True if you want it to throw <see cref="TimelinePostNotExistException"/>. Default false.</param>
- /// <returns>True if can modify, false if can't modify.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- /// <exception cref="TimelinePostNotExistException">Thrown when the post with given id does not exist or is deleted already and <paramref name="throwOnPostNotExist"/> is true.</exception>
- /// <remarks>
- /// Unless <paramref name="throwOnPostNotExist"/> is true, this method should return true if the post does not exist.
- /// If the post is deleted, its author info still exists, so it is checked as the post is not deleted unless <paramref name="throwOnPostNotExist"/> is true.
- /// This method does not check whether the user is administrator.
- /// It only checks whether he is the author of the post or the owner of the timeline.
- /// Return false when user with modifier id does not exist.
- /// </remarks>
- Task<bool> HasPostModifyPermission(string timelineName, long postId, long modifierId, bool throwOnPostNotExist = false);
-
- /// <summary>
- /// Verify whether a user is member of a timeline.
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <param name="userId">The id of user to check on.</param>
- /// <returns>True if it is a member, false if not.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Throw when <paramref name="timelineName"/> is of bad format.</exception>
- /// <exception cref="TimelineNotExistException">
- /// Thrown when timeline with name <paramref name="timelineName"/> does not exist.
- /// If it is a personal timeline, then inner exception is <see cref="UserNotExistException"/>.
- /// </exception>
- /// <remarks>
- /// Timeline owner is also considered as a member.
- /// Return false when user with user id does not exist.
- /// </remarks>
- Task<bool> IsMemberOf(string timelineName, long userId);
-
- /// <summary>
- /// Get all timelines including personal and ordinary timelines.
- /// </summary>
- /// <param name="relate">Filter timelines related (own or is a member) to specific user.</param>
- /// <param name="visibility">Filter timelines with given visibility. If null or empty, all visibilities are returned. Duplicate value are ignored.</param>
- /// <returns>The list of timelines.</returns>
- /// <remarks>
- /// If user with related user id does not exist, empty list will be returned.
- /// </remarks>
- Task<List<Models.Timeline>> GetTimelines(TimelineUserRelationship? relate = null, List<TimelineVisibility>? visibility = null);
-
- /// <summary>
- /// Create a timeline.
- /// </summary>
- /// <param name="timelineName">The name of the timeline.</param>
- /// <param name="ownerId">The id of owner of the timeline.</param>
- /// <returns>The info of the new timeline.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Thrown when timeline name is invalid.</exception>
- /// <exception cref="EntityAlreadyExistException">Thrown when the timeline already exists.</exception>
- /// <exception cref="UserNotExistException">Thrown when the owner user does not exist.</exception>
- Task<Models.Timeline> CreateTimeline(string timelineName, long ownerId);
-
- /// <summary>
- /// Delete a timeline.
- /// </summary>
- /// <param name="timelineName">The name of the timeline to delete.</param>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="timelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Thrown when timeline name is invalid.</exception>
- /// <exception cref="TimelineNotExistException">Thrown when the timeline does not exist.</exception>
- Task DeleteTimeline(string timelineName);
-
- /// <summary>
- /// Change name of a timeline.
- /// </summary>
- /// <param name="oldTimelineName">The old timeline name.</param>
- /// <param name="newTimelineName">The new timeline name.</param>
- /// <returns>The new timeline info.</returns>
- /// <exception cref="ArgumentNullException">Thrown when <paramref name="oldTimelineName"/> or <paramref name="newTimelineName"/> is null.</exception>
- /// <exception cref="ArgumentException">Thrown when <paramref name="oldTimelineName"/> or <paramref name="newTimelineName"/> is of invalid format.</exception>
- /// <exception cref="TimelineNotExistException">Thrown when timeline does not exist.</exception>
- /// <exception cref="EntityAlreadyExistException">Thrown when a timeline with new name already exists.</exception>
- /// <remarks>
- /// You can only change name of general timeline.
- /// </remarks>
- Task<Models.Timeline> ChangeTimelineName(string oldTimelineName, string newTimelineName);
- }
-
- public class TimelineService : ITimelineService
- {
- public TimelineService(ILogger<TimelineService> logger, DatabaseContext database, IDataManager dataManager, IUserService userService, IImageValidator imageValidator, IClock clock)
- {
- _logger = logger;
- _database = database;
- _dataManager = dataManager;
- _userService = userService;
- _imageValidator = imageValidator;
- _clock = clock;
- }
-
- private readonly ILogger<TimelineService> _logger;
-
- private readonly DatabaseContext _database;
-
- private readonly IDataManager _dataManager;
-
- private readonly IUserService _userService;
-
- private readonly IImageValidator _imageValidator;
-
- private readonly IClock _clock;
-
- private readonly UsernameValidator _usernameValidator = new UsernameValidator();
-
- private readonly TimelineNameValidator _timelineNameValidator = new TimelineNameValidator();
-
- private void ValidateTimelineName(string name, string paramName)
- {
- if (!_timelineNameValidator.Validate(name, out var message))
- {
- throw new ArgumentException(ExceptionTimelineNameBadFormat.AppendAdditionalMessage(message), paramName);
- }
- }
-
- /// Remember to include Members when query.
- private async Task<Models.Timeline> MapTimelineFromEntity(TimelineEntity entity)
- {
- var owner = await _userService.GetUserById(entity.OwnerId);
-
- var members = new List<User>();
- foreach (var memberEntity in entity.Members)
- {
- members.Add(await _userService.GetUserById(memberEntity.UserId));
- }
-
- var name = entity.Name ?? ("@" + owner.Username);
-
- return new Models.Timeline
- {
- UniqueID = entity.UniqueId,
- Name = name,
- NameLastModified = entity.NameLastModified,
- Title = string.IsNullOrEmpty(entity.Title) ? name : entity.Title,
- Description = entity.Description ?? "",
- Owner = owner,
- Visibility = entity.Visibility,
- Members = members,
- CreateTime = entity.CreateTime,
- LastModified = entity.LastModified
- };
- }
-
- private async Task<TimelinePost> MapTimelinePostFromEntity(TimelinePostEntity entity, string timelineName)
- {
- User? author = entity.AuthorId.HasValue ? await _userService.GetUserById(entity.AuthorId.Value) : null;
-
- ITimelinePostContent? content = null;
-
- if (entity.Content != null)
- {
- var type = entity.ContentType;
-
- content = type switch
- {
- TimelinePostContentTypes.Text => new TextTimelinePostContent(entity.Content),
- TimelinePostContentTypes.Image => new ImageTimelinePostContent(entity.Content),
- _ => throw new DatabaseCorruptedException(string.Format(CultureInfo.InvariantCulture, ExceptionDatabaseUnknownContentType, type))
- };
- }
-
- return new TimelinePost(
- id: entity.LocalId,
- author: author,
- content: content,
- time: entity.Time,
- lastUpdated: entity.LastUpdated,
- timelineName: timelineName
- );
- }
-
- private TimelineEntity CreateNewTimelineEntity(string? name, long ownerId)
- {
- var currentTime = _clock.GetCurrentTime();
-
- return new TimelineEntity
- {
- Name = name,
- NameLastModified = currentTime,
- OwnerId = ownerId,
- Visibility = TimelineVisibility.Register,
- CreateTime = currentTime,
- LastModified = currentTime,
- CurrentPostLocalId = 0,
- Members = new List<TimelineMemberEntity>()
- };
- }
-
-
-
- // Get timeline id by name. If it is a personal timeline and it does not exist, it will be created.
- //
- // This method will check the name format and if it is invalid, ArgumentException is thrown.
- //
- // For personal timeline, if the user does not exist, TimelineNotExistException will be thrown with UserNotExistException as inner exception.
- // For ordinary timeline, if the timeline does not exist, TimelineNotExistException will be thrown.
- //
- // It follows all timeline-related function common interface contracts.
- private async Task<long> FindTimelineId(string timelineName)
- {
- timelineName = TimelineHelper.ExtractTimelineName(timelineName, out var isPersonal);
-
- if (isPersonal)
- {
- long userId;
- try
- {
- userId = await _userService.GetUserIdByUsername(timelineName);
- }
- catch (ArgumentException e)
- {
- throw new ArgumentException(ExceptionFindTimelineUsernameBadFormat, nameof(timelineName), e);
- }
- catch (UserNotExistException e)
- {
- throw new TimelineNotExistException(timelineName, e);
- }
-
- var timelineEntity = await _database.Timelines.Where(t => t.OwnerId == userId && t.Name == null).Select(t => new { t.Id }).SingleOrDefaultAsync();
-
- if (timelineEntity != null)
- {
- return timelineEntity.Id;
- }
- else
- {
- var newTimelineEntity = CreateNewTimelineEntity(null, userId);
- _database.Timelines.Add(newTimelineEntity);
- await _database.SaveChangesAsync();
-
- return newTimelineEntity.Id;
- }
- }
- else
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- ValidateTimelineName(timelineName, nameof(timelineName));
-
- var timelineEntity = await _database.Timelines.Where(t => t.Name == timelineName).Select(t => new { t.Id }).SingleOrDefaultAsync();
-
- if (timelineEntity == null)
- {
- throw new TimelineNotExistException(timelineName);
- }
- else
- {
- return timelineEntity.Id;
- }
- }
- }
-
- public async Task<DateTime> GetTimelineLastModifiedTime(string timelineName)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
-
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).Select(t => new { t.LastModified }).SingleAsync();
-
- return timelineEntity.LastModified;
- }
-
- public async Task<string> GetTimelineUniqueId(string timelineName)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
-
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).Select(t => new { t.UniqueId }).SingleAsync();
-
- return timelineEntity.UniqueId;
- }
-
- public async Task<Models.Timeline> GetTimeline(string timelineName)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
-
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).Include(t => t.Members).SingleAsync();
-
- return await MapTimelineFromEntity(timelineEntity);
- }
-
- public async Task<List<TimelinePost>> GetPosts(string timelineName, DateTime? modifiedSince = null, bool includeDeleted = false)
- {
- modifiedSince = modifiedSince?.MyToUtc();
-
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
- IQueryable<TimelinePostEntity> query = _database.TimelinePosts.Where(p => p.TimelineId == timelineId);
-
- if (!includeDeleted)
- {
- query = query.Where(p => p.Content != null);
- }
-
- if (modifiedSince.HasValue)
- {
- query = query.Include(p => p.Author).Where(p => p.LastUpdated >= modifiedSince || (p.Author != null && p.Author.UsernameChangeTime >= modifiedSince));
- }
-
- query = query.OrderBy(p => p.Time);
-
- var postEntities = await query.ToListAsync();
-
- var posts = new List<TimelinePost>();
- foreach (var entity in postEntities)
- {
- posts.Add(await MapTimelinePostFromEntity(entity, timelineName));
- }
- return posts;
- }
-
- public async Task<string> GetPostDataETag(string timelineName, long postId)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
-
- var postEntity = await _database.TimelinePosts.Where(p => p.TimelineId == timelineId && p.LocalId == postId).SingleOrDefaultAsync();
-
- if (postEntity == null)
- throw new TimelinePostNotExistException(timelineName, postId, false);
-
- if (postEntity.Content == null)
- throw new TimelinePostNotExistException(timelineName, postId, true);
-
- if (postEntity.ContentType != TimelinePostContentTypes.Image)
- throw new TimelinePostNoDataException(ExceptionGetDataNonImagePost);
-
- var tag = postEntity.Content;
-
- return tag;
- }
-
- public async Task<PostData> GetPostData(string timelineName, long postId)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
- var postEntity = await _database.TimelinePosts.Where(p => p.TimelineId == timelineId && p.LocalId == postId).SingleOrDefaultAsync();
-
- if (postEntity == null)
- throw new TimelinePostNotExistException(timelineName, postId, false);
-
- if (postEntity.Content == null)
- throw new TimelinePostNotExistException(timelineName, postId, true);
-
- if (postEntity.ContentType != TimelinePostContentTypes.Image)
- throw new TimelinePostNoDataException(ExceptionGetDataNonImagePost);
-
- var tag = postEntity.Content;
-
- byte[] data;
-
- try
- {
- data = await _dataManager.GetEntry(tag);
- }
- catch (InvalidOperationException e)
- {
- throw new DatabaseCorruptedException(ExceptionGetDataDataEntryNotExist, e);
- }
-
- if (postEntity.ExtraContent == null)
- {
- _logger.LogWarning(LogGetDataNoFormat);
- var format = Image.DetectFormat(data);
- postEntity.ExtraContent = format.DefaultMimeType;
- await _database.SaveChangesAsync();
- }
-
- return new PostData
- {
- Data = data,
- Type = postEntity.ExtraContent,
- ETag = tag,
- LastModified = postEntity.LastUpdated
- };
- }
-
- public async Task<TimelinePost> CreateTextPost(string timelineName, long authorId, string text, DateTime? time)
- {
- time = time?.MyToUtc();
-
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
- if (text == null)
- throw new ArgumentNullException(nameof(text));
-
- var timelineId = await FindTimelineId(timelineName);
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).SingleAsync();
-
- var author = await _userService.GetUserById(authorId);
-
- var currentTime = _clock.GetCurrentTime();
- var finalTime = time ?? currentTime;
-
- timelineEntity.CurrentPostLocalId += 1;
-
- var postEntity = new TimelinePostEntity
- {
- LocalId = timelineEntity.CurrentPostLocalId,
- ContentType = TimelinePostContentTypes.Text,
- Content = text,
- AuthorId = authorId,
- TimelineId = timelineId,
- Time = finalTime,
- LastUpdated = currentTime
- };
- _database.TimelinePosts.Add(postEntity);
- await _database.SaveChangesAsync();
-
-
- return new TimelinePost(
- id: postEntity.LocalId,
- content: new TextTimelinePostContent(text),
- time: finalTime,
- author: author,
- lastUpdated: currentTime,
- timelineName: timelineName
- );
- }
-
- public async Task<TimelinePost> CreateImagePost(string timelineName, long authorId, byte[] data, DateTime? time)
- {
- time = time?.MyToUtc();
-
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
- if (data == null)
- throw new ArgumentNullException(nameof(data));
-
- var timelineId = await FindTimelineId(timelineName);
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).SingleAsync();
-
- var author = await _userService.GetUserById(authorId);
-
- var imageFormat = await _imageValidator.Validate(data);
-
- var imageFormatText = imageFormat.DefaultMimeType;
-
- var tag = await _dataManager.RetainEntry(data);
-
- var currentTime = _clock.GetCurrentTime();
- var finalTime = time ?? currentTime;
-
- timelineEntity.CurrentPostLocalId += 1;
-
- var postEntity = new TimelinePostEntity
- {
- LocalId = timelineEntity.CurrentPostLocalId,
- ContentType = TimelinePostContentTypes.Image,
- Content = tag,
- ExtraContent = imageFormatText,
- AuthorId = authorId,
- TimelineId = timelineId,
- Time = finalTime,
- LastUpdated = currentTime
- };
- _database.TimelinePosts.Add(postEntity);
- await _database.SaveChangesAsync();
-
- return new TimelinePost(
- id: postEntity.LocalId,
- content: new ImageTimelinePostContent(tag),
- time: finalTime,
- author: author,
- lastUpdated: currentTime,
- timelineName: timelineName
- );
- }
-
- public async Task DeletePost(string timelineName, long id)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
-
- var post = await _database.TimelinePosts.Where(p => p.TimelineId == timelineId && p.LocalId == id).SingleOrDefaultAsync();
-
- if (post == null)
- throw new TimelinePostNotExistException(timelineName, id, false);
-
- if (post.Content == null)
- throw new TimelinePostNotExistException(timelineName, id, true);
-
- string? dataTag = null;
-
- if (post.ContentType == TimelinePostContentTypes.Image)
- {
- dataTag = post.Content;
- }
-
- post.Content = null;
- post.LastUpdated = _clock.GetCurrentTime();
-
- await _database.SaveChangesAsync();
-
- if (dataTag != null)
- {
- await _dataManager.FreeEntry(dataTag);
- }
- }
-
- public async Task DeleteAllPostsOfUser(long userId)
- {
- var posts = await _database.TimelinePosts.Where(p => p.AuthorId == userId).ToListAsync();
-
- var now = _clock.GetCurrentTime();
-
- var dataTags = new List<string>();
-
- foreach (var post in posts)
- {
- if (post.Content != null)
- {
- if (post.ContentType == TimelinePostContentTypes.Image)
- {
- dataTags.Add(post.Content);
- }
- post.Content = null;
- }
- post.LastUpdated = now;
- }
-
- await _database.SaveChangesAsync();
-
- foreach (var dataTag in dataTags)
- {
- await _dataManager.FreeEntry(dataTag);
- }
- }
-
- public async Task ChangeProperty(string timelineName, TimelineChangePropertyRequest newProperties)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
- if (newProperties == null)
- throw new ArgumentNullException(nameof(newProperties));
-
- var timelineId = await FindTimelineId(timelineName);
-
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).SingleAsync();
-
- var changed = false;
-
- if (newProperties.Title != null)
- {
- changed = true;
- timelineEntity.Title = newProperties.Title;
- }
-
- if (newProperties.Description != null)
- {
- changed = true;
- timelineEntity.Description = newProperties.Description;
- }
-
- if (newProperties.Visibility.HasValue)
- {
- changed = true;
- timelineEntity.Visibility = newProperties.Visibility.Value;
- }
-
- if (changed)
- {
- var currentTime = _clock.GetCurrentTime();
- timelineEntity.LastModified = currentTime;
- }
-
- await _database.SaveChangesAsync();
- }
-
- public async Task ChangeMember(string timelineName, IList<string>? add, IList<string>? remove)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- List<string>? RemoveDuplicateAndCheckFormat(IList<string>? list, string paramName)
- {
- if (list != null)
- {
- List<string> result = new List<string>();
- var count = list.Count;
- for (var index = 0; index < count; index++)
- {
- var username = list[index];
- if (result.Contains(username))
- {
- continue;
- }
- var (validationResult, message) = _usernameValidator.Validate(username);
- if (!validationResult)
- throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, ExceptionChangeMemberUsernameBadFormat, index), nameof(paramName));
- result.Add(username);
- }
- return result;
- }
- else
- {
- return null;
- }
- }
- var simplifiedAdd = RemoveDuplicateAndCheckFormat(add, nameof(add));
- var simplifiedRemove = RemoveDuplicateAndCheckFormat(remove, nameof(remove));
-
- // remove those both in add and remove
- if (simplifiedAdd != null && simplifiedRemove != null)
- {
- var usersToClean = simplifiedRemove.Where(u => simplifiedAdd.Contains(u)).ToList();
- foreach (var u in usersToClean)
- {
- simplifiedAdd.Remove(u);
- simplifiedRemove.Remove(u);
- }
-
- if (simplifiedAdd.Count == 0)
- simplifiedAdd = null;
-
- if (simplifiedRemove.Count == 0)
- simplifiedRemove = null;
- }
-
- if (simplifiedAdd == null && simplifiedRemove == null)
- return;
-
- var timelineId = await FindTimelineId(timelineName);
-
- async Task<List<long>?> CheckExistenceAndGetId(List<string>? list)
- {
- if (list == null)
- return null;
-
- List<long> result = new List<long>();
- foreach (var username in list)
- {
- result.Add(await _userService.GetUserIdByUsername(username));
- }
- return result;
- }
- var userIdsAdd = await CheckExistenceAndGetId(simplifiedAdd);
- var userIdsRemove = await CheckExistenceAndGetId(simplifiedRemove);
-
- if (userIdsAdd != null)
- {
- var membersToAdd = userIdsAdd.Select(id => new TimelineMemberEntity { UserId = id, TimelineId = timelineId }).ToList();
- _database.TimelineMembers.AddRange(membersToAdd);
- }
-
- if (userIdsRemove != null)
- {
- var membersToRemove = await _database.TimelineMembers.Where(m => m.TimelineId == timelineId && userIdsRemove.Contains(m.UserId)).ToListAsync();
- _database.TimelineMembers.RemoveRange(membersToRemove);
- }
-
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).SingleAsync();
- timelineEntity.LastModified = _clock.GetCurrentTime();
-
- await _database.SaveChangesAsync();
- }
-
- public async Task<bool> HasManagePermission(string timelineName, long userId)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).Select(t => new { t.OwnerId }).SingleAsync();
-
- return userId == timelineEntity.OwnerId;
- }
-
- public async Task<bool> HasReadPermission(string timelineName, long? visitorId)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).Select(t => new { t.Visibility }).SingleAsync();
-
- if (timelineEntity.Visibility == TimelineVisibility.Public)
- return true;
-
- if (timelineEntity.Visibility == TimelineVisibility.Register && visitorId != null)
- return true;
-
- if (visitorId == null)
- {
- return false;
- }
- else
- {
- var memberEntity = await _database.TimelineMembers.Where(m => m.UserId == visitorId && m.TimelineId == timelineId).SingleOrDefaultAsync();
- return memberEntity != null;
- }
- }
-
- public async Task<bool> HasPostModifyPermission(string timelineName, long postId, long modifierId, bool throwOnPostNotExist = false)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
-
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).Select(t => new { t.OwnerId }).SingleAsync();
-
- var postEntity = await _database.TimelinePosts.Where(p => p.Id == postId).Select(p => new { p.Content, p.AuthorId }).SingleOrDefaultAsync();
-
- if (postEntity == null)
- {
- if (throwOnPostNotExist)
- throw new TimelinePostNotExistException(timelineName, postId, false);
- else
- return true;
- }
-
- if (postEntity.Content == null && throwOnPostNotExist)
- {
- throw new TimelinePostNotExistException(timelineName, postId, true);
- }
-
- return timelineEntity.OwnerId == modifierId || postEntity.AuthorId == modifierId;
- }
-
- public async Task<bool> IsMemberOf(string timelineName, long userId)
- {
- if (timelineName == null)
- throw new ArgumentNullException(nameof(timelineName));
-
- var timelineId = await FindTimelineId(timelineName);
-
- var timelineEntity = await _database.Timelines.Where(t => t.Id == timelineId).Select(t => new { t.OwnerId }).SingleAsync();
-
- if (userId == timelineEntity.OwnerId)
- return true;
-
- return await _database.TimelineMembers.AnyAsync(m => m.TimelineId == timelineId && m.UserId == userId);
- }
-
- public async Task<List<Models.Timeline>> GetTimelines(TimelineUserRelationship? relate = null, List<TimelineVisibility>? visibility = null)
- {
- List<TimelineEntity> entities;
-
- IQueryable<TimelineEntity> ApplyTimelineVisibilityFilter(IQueryable<TimelineEntity> query)
- {
- if (visibility != null && visibility.Count != 0)
- {
- return query.Where(t => visibility.Contains(t.Visibility));
- }
- return query;
- }
-
- bool allVisibilities = visibility == null || visibility.Count == 0;
-
- if (relate == null)
- {
- entities = await ApplyTimelineVisibilityFilter(_database.Timelines).Include(t => t.Members).ToListAsync();
- }
- else
- {
- entities = new List<TimelineEntity>();
-
- if ((relate.Type & TimelineUserRelationshipType.Own) != 0)
- {
- entities.AddRange(await ApplyTimelineVisibilityFilter(_database.Timelines.Where(t => t.OwnerId == relate.UserId)).Include(t => t.Members).ToListAsync());
- }
-
- if ((relate.Type & TimelineUserRelationshipType.Join) != 0)
- {
- entities.AddRange(await ApplyTimelineVisibilityFilter(_database.TimelineMembers.Where(m => m.UserId == relate.UserId).Include(m => m.Timeline).ThenInclude(t => t.Members).Select(m => m.Timeline)).ToListAsync());
- }
- }
-
- var result = new List<Models.Timeline>();
-
- foreach (var entity in entities)
- {
- result.Add(await MapTimelineFromEntity(entity));
- }
-
- return result;
- }
-
- public async Task<Models.Timeline> CreateTimeline(string name, long owner)
- {
- if (name == null)
- throw new ArgumentNullException(nameof(name));
-
- ValidateTimelineName(name, nameof(name));
-
- var user = await _userService.GetUserById(owner);
-
- var conflict = await _database.Timelines.AnyAsync(t => t.Name == name);
-
- if (conflict)
- throw new EntityAlreadyExistException(EntityNames.Timeline, null, ExceptionTimelineNameConflict);
-
- var newEntity = CreateNewTimelineEntity(name, user.Id!.Value);
-
- _database.Timelines.Add(newEntity);
- await _database.SaveChangesAsync();
-
- return await MapTimelineFromEntity(newEntity);
- }
-
- public async Task DeleteTimeline(string name)
- {
- if (name == null)
- throw new ArgumentNullException(nameof(name));
-
- ValidateTimelineName(name, nameof(name));
-
- var entity = await _database.Timelines.Where(t => t.Name == name).SingleOrDefaultAsync();
-
- if (entity == null)
- throw new TimelineNotExistException(name);
-
- _database.Timelines.Remove(entity);
- await _database.SaveChangesAsync();
- }
-
- public async Task<Models.Timeline> ChangeTimelineName(string oldTimelineName, string newTimelineName)
- {
- if (oldTimelineName == null)
- throw new ArgumentNullException(nameof(oldTimelineName));
- if (newTimelineName == null)
- throw new ArgumentNullException(nameof(newTimelineName));
-
- ValidateTimelineName(oldTimelineName, nameof(oldTimelineName));
- ValidateTimelineName(newTimelineName, nameof(newTimelineName));
-
- var entity = await _database.Timelines.Include(t => t.Members).Where(t => t.Name == oldTimelineName).SingleOrDefaultAsync();
-
- if (entity == null)
- throw new TimelineNotExistException(oldTimelineName);
-
- if (oldTimelineName == newTimelineName)
- return await MapTimelineFromEntity(entity);
-
- var conflict = await _database.Timelines.AnyAsync(t => t.Name == newTimelineName);
-
- if (conflict)
- throw new EntityAlreadyExistException(EntityNames.Timeline, null, ExceptionTimelineNameConflict);
-
- var now = _clock.GetCurrentTime();
-
- entity.Name = newTimelineName;
- entity.NameLastModified = now;
- entity.LastModified = now;
-
- await _database.SaveChangesAsync();
-
- return await MapTimelineFromEntity(entity);
- }
- }
-}
|