add user/user_link.go

Author: SilkageNet

.gitignore

@@ -14,3 +14,4 @@
 # Dependency directories (remove the comment below to include it)
 # vendor/
 .idea/
+go.sum

go.mod

@@ -1,3 +1,5 @@
 module github.com/wechaty/go-wechaty
 
+require github.com/otiai10/opengraph v1.1.1
+
 go 1.14

src/wechaty/user/contact.go

@@ -0,0 +1,7 @@
+package user
+
+import "github.com/wechaty/go-wechaty/src/wechaty"
+
+type Contact struct {
+  wechaty.Accessory
+}

src/wechaty/user/image.go

@@ -14,7 +14,7 @@ type Images struct {
 // NewImages create image struct
 func NewImages(id string, accessory wechaty.Accessory) *Images {
 	if accessory.Puppet == nil {
-		panic("Image class can not be instanciated without a puppet!")
+		panic("Image class can not be instantiated without a puppet!")
 	}
 	return &Images{accessory, id}
 }

src/wechaty/user/tag.go

@@ -0,0 +1,17 @@
+package user
+
+import (
+  "github.com/wechaty/go-wechaty/src/wechaty"
+)
+
+type Tag struct {
+  wechaty.Accessory
+  TagId string
+}
+
+func NewTag(id string, accessory wechaty.Accessory) *Tag {
+  if accessory.Puppet == nil {
+    panic("Tag class can not be instantiated without a puppet!")
+  }
+  return &Tag{accessory, id}
+}

src/wechaty/user/user_link.go

@@ -0,0 +1,74 @@
+package user
+
+import (
+  "errors"
+  "fmt"
+  "github.com/otiai10/opengraph"
+  "github.com/wechaty/go-wechaty/src/wechaty-puppet/schemas"
+)
+
+var (
+  ErrImageUrlOrDescNotFound = errors.New("imgUrl.or.desc.not.found")
+)
+
+type UrlLink struct {
+  payload *schemas.UrlLinkPayload
+}
+
+func NewUrlLink(payload *schemas.UrlLinkPayload) *UrlLink {
+  return &UrlLink{payload: payload}
+}
+
+func (ul *UrlLink) String() string {
+  return fmt.Sprintf("UrlLink<%s>", ul.Url())
+}
+
+func (ul *UrlLink) Url() string {
+  if ul.payload == nil {
+    return ""
+  }
+  return ul.payload.Url
+}
+
+func (ul *UrlLink) Title() string {
+  if ul.payload == nil {
+    return ""
+  }
+  return ul.payload.Title
+}
+
+func (ul *UrlLink) ThumbnailUrl() string {
+  if ul.payload == nil {
+    return ""
+  }
+  return ul.payload.ThumbnailUrl
+}
+
+func (ul *UrlLink) Description() string {
+  if ul.payload == nil {
+    return ""
+  }
+  return ul.payload.Description
+}
+
+func CreateUrlLink(url string) (*UrlLink, error) {
+  var og, err = opengraph.Fetch(url)
+  if err != nil {
+    return nil, err
+  }
+  var payload = &schemas.UrlLinkPayload{
+    Url:         url,
+    Title:       og.Title,
+    Description: og.Description,
+  }
+
+  if len(og.Image) != 0 {
+    payload.ThumbnailUrl = og.Image[0].URL
+  }
+
+  if payload.ThumbnailUrl == "" || payload.Description == "" {
+    return nil, ErrImageUrlOrDescNotFound
+  }
+
+  return NewUrlLink(payload), nil
+}