sharp-chat/SharpChatCommon/EventStorage/MariaDBEventStorage.cs

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using MySqlConnector;
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.Json;
namespace SharpChat.EventStorage {
public partial class MariaDBEventStorage : IEventStorage {
private string ConnectionString { get; }
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public MariaDBEventStorage(string connString) {
ConnectionString = connString;
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}
public void AddEvent(
long id, string type,
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object? data = null,
StoredEventFlags flags = StoredEventFlags.None
) {
AddEvent(id, type, null, 0, null, Colour.None, 0, null, 0, data, flags);
}
public void AddEvent(
long id, string type,
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string? channelName,
object? data = null,
StoredEventFlags flags = StoredEventFlags.None
) {
AddEvent(id, type, channelName, 0, null, Colour.None, 0, null, 0, data, flags);
}
public void AddEvent(
long id, string type,
long senderId, string? senderName, Colour senderColour, int senderRank, string? senderNick, UserPermissions senderPerms,
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object? data = null,
StoredEventFlags flags = StoredEventFlags.None
) {
AddEvent(id, type, null, senderId, senderName, senderColour, senderRank, senderNick, senderPerms, data, flags);
}
public void AddEvent(
long id, string type,
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string? channelName,
long senderId, string? senderName, Colour senderColour, int senderRank, string? senderNick, UserPermissions senderPerms,
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object? data = null,
StoredEventFlags flags = StoredEventFlags.None
) {
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RunCommand(
"INSERT INTO `sqc_events` (`event_id`, `event_created`, `event_type`, `event_target`, `event_flags`, `event_data`"
+ ", `event_sender`, `event_sender_name`, `event_sender_colour`, `event_sender_rank`, `event_sender_nick`, `event_sender_perms`)"
+ " VALUES (@id, NOW(), @type, @target, @flags, @data"
+ ", @sender, @sender_name, @sender_colour, @sender_rank, @sender_nick, @sender_perms)",
new MySqlParameter("id", id),
new MySqlParameter("type", type),
new MySqlParameter("target", string.IsNullOrWhiteSpace(channelName) ? null : channelName),
new MySqlParameter("flags", (byte)flags),
new MySqlParameter("data", data == null ? "{}" : JsonSerializer.SerializeToUtf8Bytes(data)),
new MySqlParameter("sender", senderId < 1 ? null : senderId),
new MySqlParameter("sender_name", senderName),
new MySqlParameter("sender_colour", senderColour.ToMisuzu()),
new MySqlParameter("sender_rank", senderRank),
new MySqlParameter("sender_nick", string.IsNullOrWhiteSpace(senderNick) ? null : senderNick),
new MySqlParameter("sender_perms", senderPerms)
);
}
public long AddEvent(string type, UserInfo user, ChannelInfo channel, object? data = null, StoredEventFlags flags = StoredEventFlags.None) {
long id = SharpId.Next();
AddEvent(
id, type,
channel?.Name,
user?.UserId ?? 0,
user?.UserName ?? string.Empty,
user?.Colour ?? Colour.None,
user?.Rank ?? 0,
user?.NickName,
user?.Permissions ?? 0,
data,
flags
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);
return id;
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}
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public StoredEventInfo? GetEvent(long seqId) {
try {
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using MySqlDataReader? reader = RunQuery(
"SELECT `event_id`, `event_type`, `event_flags`, `event_data`, `event_target`"
+ ", `event_sender`, `event_sender_name`, `event_sender_colour`, `event_sender_rank`, `event_sender_nick`, `event_sender_perms`"
+ ", UNIX_TIMESTAMP(`event_created`) AS `event_created`"
+ ", UNIX_TIMESTAMP(`event_deleted`) AS `event_deleted`"
+ " FROM `sqc_events`"
+ " WHERE `event_id` = @id",
new MySqlParameter("id", seqId)
);
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if(reader != null)
while(reader.Read()) {
StoredEventInfo evt = ReadEvent(reader);
if(evt != null)
return evt;
}
} catch(MySqlException ex) {
Logger.Write(ex);
}
return null;
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}
private static StoredEventInfo ReadEvent(MySqlDataReader reader) {
return new StoredEventInfo(
reader.GetInt64("event_id"),
Encoding.ASCII.GetString((byte[])reader["event_type"]),
reader.IsDBNull(reader.GetOrdinal("event_sender")) ? null : new UserInfo(
reader.GetInt64("event_sender"),
reader.IsDBNull(reader.GetOrdinal("event_sender_name")) ? string.Empty : reader.GetString("event_sender_name"),
Colour.FromMisuzu(reader.GetInt32("event_sender_colour")),
reader.GetInt32("event_sender_rank"),
(UserPermissions)reader.GetInt32("event_sender_perms"),
reader.IsDBNull(reader.GetOrdinal("event_sender_nick")) ? null : reader.GetString("event_sender_nick")
),
DateTimeOffset.FromUnixTimeSeconds(reader.GetInt32("event_created")),
reader.IsDBNull(reader.GetOrdinal("event_deleted")) ? null : DateTimeOffset.FromUnixTimeSeconds(reader.GetInt32("event_deleted")),
reader.IsDBNull(reader.GetOrdinal("event_target")) ? null : Encoding.ASCII.GetString((byte[])reader["event_target"]),
JsonDocument.Parse(Encoding.ASCII.GetString((byte[])reader["event_data"])),
(StoredEventFlags)reader.GetByte("event_flags")
);
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}
public IEnumerable<StoredEventInfo> GetChannelEventLog(string channelName, int amount = 20, int offset = 0) {
List<StoredEventInfo> events = new();
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try {
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using MySqlDataReader? reader = RunQuery(
"SELECT `event_id`, `event_type`, `event_flags`, `event_data`, `event_target`"
+ ", `event_sender`, `event_sender_name`, `event_sender_colour`, `event_sender_rank`, `event_sender_nick`, `event_sender_perms`"
+ ", UNIX_TIMESTAMP(`event_created`) AS `event_created`"
+ ", UNIX_TIMESTAMP(`event_deleted`) AS `event_deleted`"
+ " FROM `sqc_events`"
+ " WHERE `event_deleted` IS NULL AND (`event_target` = @target OR `event_target` IS NULL)"
+ " AND `event_id` > @offset"
+ " ORDER BY `event_id` DESC"
+ " LIMIT @amount",
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new MySqlParameter("target", channelName),
new MySqlParameter("amount", amount),
new MySqlParameter("offset", offset)
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);
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if(reader != null)
while(reader.Read()) {
StoredEventInfo evt = ReadEvent(reader);
if(evt != null)
events.Add(evt);
}
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} catch(MySqlException ex) {
Logger.Write(ex);
}
events.Reverse();
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return events;
}
public void RemoveEvent(StoredEventInfo evt) {
RunCommand(
"UPDATE IGNORE `sqc_events` SET `event_deleted` = NOW() WHERE `event_id` = @id AND `event_deleted` IS NULL",
new MySqlParameter("id", evt.Id)
);
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}
}
}