99 lines
1.9 KiB
Go
99 lines
1.9 KiB
Go
package metadata
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import (
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"git.lumeweb.com/LumeWeb/libs5-go/encoding"
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"github.com/emirpasic/gods/maps/linkedhashmap"
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"github.com/vmihailenco/msgpack/v5"
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)
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type FileVersionThumbnail struct {
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ImageType string
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AspectRatio float64
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CID *encoding.EncryptedCID
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Thumbhash []byte
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}
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func NewFileVersionThumbnail(imageType string, aspectRatio float64, cid *encoding.EncryptedCID, thumbhash []byte) *FileVersionThumbnail {
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return &FileVersionThumbnail{
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ImageType: imageType,
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AspectRatio: aspectRatio,
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CID: cid,
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Thumbhash: thumbhash,
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}
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}
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func (fvt *FileVersionThumbnail) EncodeMsgpack(enc *msgpack.Encoder) error {
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fmap := &fileVersionThumbnailSerializationMap{*linkedhashmap.New()}
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fmap.Put(2, fvt.AspectRatio)
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fmap.Put(3, fvt.CID.ToBytes())
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if fvt.ImageType != "" {
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fmap.Put(1, fvt.ImageType)
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}
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if fvt.Thumbhash != nil {
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fmap.Put(4, fvt.Thumbhash)
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}
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return enc.Encode(fmap)
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}
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func (fvt *FileVersionThumbnail) DecodeMsgpack(dec *msgpack.Decoder) error {
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mapLen, err := dec.DecodeMapLen()
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if err != nil {
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return err
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}
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for i := 0; i < mapLen; i++ {
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key, err := dec.DecodeInt8()
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if err != nil {
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return err
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}
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switch key {
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case int8(1):
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err := dec.Decode(&fvt.ImageType)
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if err != nil {
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return err
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}
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case int8(2):
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err := dec.Decode(&fvt.AspectRatio)
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if err != nil {
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return err
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}
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case int8(3):
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val, err := dec.DecodeBytes()
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if err != nil {
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return err
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}
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fvt.CID, err = encoding.EncryptedCIDFromBytes(val)
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if err != nil {
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return err
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}
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case int8(4):
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err := dec.Decode(&fvt.Thumbhash)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (fvt *FileVersionThumbnail) Encode() map[int]interface{} {
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data := map[int]interface{}{
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2: fvt.AspectRatio,
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3: fvt.CID.ToBytes(),
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}
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if fvt.ImageType != "" {
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data[1] = fvt.ImageType
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}
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if fvt.Thumbhash != nil {
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data[4] = fvt.Thumbhash
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}
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return data
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}
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