feat: add method to fetch response from medium API

Signed-off-by: Sphericalkat <amolele@gmail.com>

pkg/entities/medium_response.go

@@ -0,0 +1,78 @@
+package entities
+
+import "encoding/json"
+
+func UnmarshalMediumResponse(data []byte) (MediumResponse, error) {
+	var r MediumResponse
+	err := json.Unmarshal(data, &r)
+	return r, err
+}
+
+func (r *MediumResponse) Marshal() ([]byte, error) {
+	return json.Marshal(r)
+}
+
+type MediumResponse struct {
+	Data Data `json:"data"`
+}
+
+type Data struct {
+	Post Post `json:"post"`
+}
+
+type Post struct {
+	Title     string  `json:"title"`
+	CreatedAt int64   `json:"createdAt"`
+	Creator   Creator `json:"creator"`
+	Content   Content `json:"content"`
+}
+
+type Content struct {
+	BodyModel BodyModel `json:"bodyModel"`
+}
+
+type BodyModel struct {
+	Paragraphs []Paragraph `json:"paragraphs"`
+}
+
+type Paragraph struct {
+	Name     string      `json:"name"`
+	Text     string      `json:"text"`
+	Type     Type        `json:"type"`
+	Href     interface{} `json:"href"`
+	Layout   *string     `json:"layout"`
+	Markups  []Markup    `json:"markups"`
+	Iframe   interface{} `json:"iframe"`
+	Metadata *Metadata   `json:"metadata"`
+}
+
+type Markup struct {
+	Title      *string     `json:"title"`
+	Type       string      `json:"type"`
+	Href       *string     `json:"href"`
+	UserID     interface{} `json:"userId"`
+	Start      int64       `json:"start"`
+	End        int64       `json:"end"`
+	AnchorType *string     `json:"anchorType"`
+}
+
+type Metadata struct {
+	ID             string `json:"id"`
+	OriginalWidth  int64  `json:"originalWidth"`
+	OriginalHeight int64  `json:"originalHeight"`
+}
+
+type Creator struct {
+	ID   string `json:"id"`
+	Name string `json:"name"`
+}
+
+type Type string
+
+const (
+	H3  Type = "H3"
+	H4  Type = "H4"
+	Img Type = "IMG"
+	P   Type = "P"
+	Pre Type = "PRE"
+)