avatar support

1 files changed, 71 insertions, 0 deletions

diff --git a/models/avatar.go b/models/avatar.go
new file mode 100644
index 0000000..65c690f
--- /dev/null
+++ b/models/avatar.go
@@ -0,0 +1,71 @@
+package models
+
+import (
+	"bytes"
+	"encoding/gob"
+	"fmt"
+
+	"git.capotej.com/capotej/communique/config"
+	"github.com/dgraph-io/badger/v3"
+)
+
+type Avatar struct {
+	Handler     config.Handler
+	ContentType string
+	Bytes       []byte
+}
+
+// used for lookup purposes (count, collect, find)
+func NewAvatar(h config.Handler) *Avatar {
+	aso := &Avatar{Handler: h}
+	return aso
+}
+
+func CreateAvatar(h config.Handler, contentType string, bytes []byte) (*Avatar, error) {
+	aso := &Avatar{
+		Handler:     h,
+		ContentType: contentType,
+		Bytes:       bytes,
+	}
+	return aso, nil
+}
+
+func (a *Avatar) Name() string {
+	return "Avatar"
+}
+
+func (a *Avatar) Key() string {
+	keyBase := fmt.Sprintf("avatars:%s", a.Handler.Name)
+	return keyBase
+}
+
+func (a *Avatar) DedupKey() string {
+	return a.Key()
+}
+
+func (a *Avatar) Keybase() string {
+	return a.Key()
+}
+
+func (a *Avatar) SaveDedup(txn *badger.Txn) error {
+	txn.Discard() // nothing to do here
+	return nil
+}
+
+func (a *Avatar) Save(txn *badger.Txn) error {
+	if a.Bytes == nil {
+		return fmt.Errorf("bytes not set")
+	}
+	if a.ContentType == "" {
+		return fmt.Errorf("content type not set")
+	}
+
+	var network bytes.Buffer
+	enc := gob.NewEncoder(&network)
+	err := enc.Encode(a)
+	if err != nil {
+		return fmt.Errorf("could not encode Avatar: %w", err)
+	}
+	e := badger.NewEntry([]byte(a.Key()), network.Bytes())
+	return txn.SetEntry(e)
+}