feat: add sqlite3 database support

Author: fumiama

db/sqlite3/model.go

@@ -0,0 +1,72 @@
+package sqlite3
+
+const (
+	Sqlite3GroupMessageTableName          = "grpmsg"
+	Sqlite3MessageAttributeTableName      = "msgattr"
+	Sqlite3GuildMessageAttributeTableName = "gmsgattr"
+	Sqlite3QuotedInfoTableName            = "quoinf"
+	Sqlite3PrivateMessageTableName        = "privmsg"
+	Sqlite3GuildChannelMessageTableName   = "guildmsg"
+)
+
+// StoredMessageAttribute 持久化消息属性
+type StoredMessageAttribute struct {
+	ID         int64 // ID is the crc64 of 字段s below
+	MessageSeq int32
+	InternalID int32
+	SenderUin  int64
+	SenderName string
+	Timestamp  int64
+}
+
+// StoredGuildMessageAttribute 持久化频道消息属性
+type StoredGuildMessageAttribute struct {
+	ID           int64 // ID is the crc64 of 字段s below
+	MessageSeq   int64
+	InternalID   int64
+	SenderTinyID int64
+	SenderName   string
+	Timestamp    int64
+}
+
+// QuotedInfo 引用回复
+type QuotedInfo struct {
+	ID            int64 // ID is the crc64 of 字段s below
+	PrevID        string
+	PrevGlobalID  int32
+	QuotedContent string // QuotedContent is json of original content
+}
+
+// StoredGroupMessage 持久化群消息
+type StoredGroupMessage struct {
+	GlobalID     int32
+	ID           string
+	AttributeID  int64
+	SubType      string
+	QuotedInfoID int64
+	GroupCode    int64
+	AnonymousID  string
+	Content      string // Content is json of original content
+}
+
+// StoredPrivateMessage 持久化私聊消息
+type StoredPrivateMessage struct {
+	GlobalID     int32
+	ID           string
+	AttributeID  int64
+	SubType      string
+	QuotedInfoID int64
+	SessionUin   int64
+	TargetUin    int64
+	Content      string // Content is json of original content
+}
+
+// StoredGuildChannelMessage 持久化频道消息
+type StoredGuildChannelMessage struct {
+	ID           string
+	AttributeID  int64
+	GuildID      int64
+	ChannelID    int64
+	QuotedInfoID int64
+	Content      string // Content is json of original content
+}