Support Media Message (#9)

internal/model/media_v4.go

@@ -0,0 +1,35 @@
+package model
+
+import "path/filepath"
+
+type MediaV4 struct {
+	Type       string `json:"type"`
+	Key        string `json:"key"`
+	Dir1       string `json:"dir1"`
+	Dir2       string `json:"dir2"`
+	Name       string `json:"name"`
+	Size       int64  `json:"size"`
+	ModifyTime int64  `json:"modifyTime"`
+}
+
+func (m *MediaV4) Wrap() *Media {
+
+	var path string
+	switch m.Type {
+	case "image":
+		path = filepath.Join("msg", "attach", m.Dir1, m.Dir2, "Img", m.Name)
+	case "video":
+		path = filepath.Join("msg", "video", m.Dir1, m.Name)
+	case "file":
+		path = filepath.Join("msg", "file", m.Dir1, m.Name)
+	}
+
+	return &Media{
+		Type:       m.Type,
+		Key:        m.Key,
+		Path:       path,
+		Name:       m.Name,
+		Size:       m.Size,
+		ModifyTime: m.ModifyTime,
+	}
+}