diff --git a/datasource.go b/datasource.go
new file mode 100644
index 0000000..3488257
--- /dev/null
+++ b/datasource.go
@@ -0,0 +1,31 @@
+package main
+
+// EPData 视频信息
+type EPData struct {
+	Cid       int64 `json:"cid"`
+	Dimension struct {
+		Height int64 `json:"height"`
+		Rotate int64 `json:"rotate"`
+		Width  int64 `json:"width"`
+	} `json:"dimension"`
+	Duration int64  `json:"duration"`
+	From     string `json:"from"`
+	Page     int64  `json:"page"`
+	Part     string `json:"part"`
+	Vid      string `json:"vid"`
+	Weblink  string `json:"weblink"`
+}
+
+// EPResponse 视频信息请求接口返回数据
+type EPResponse struct {
+	Code    int64    `json:"code"`
+	Data    []EPData `json:"data"`
+	Message string   `json:"message"`
+	TTL     int64    `json:"ttl"`
+}
+
+// EPDataProvider 定义数据来源接口
+type EPDataProvider interface {
+	// GetEPData 根据视频号获取视频的集数据
+	GetEPData(videoNo string) (epdatas []EPData, err error)
+}
diff --git a/main.go b/main.go
index 7905807..5ad8539 100644
--- a/main.go
+++ b/main.go
@@ -1,5 +1,16 @@
 package main
 
-func main() {
+import (
+	"fmt"
+)
 
+func main() {
+	epProvider := new(mockProvider)
+	epdatas, err := epProvider.GetEPData("av1742161")
+	if err != nil {
+		panic(err)
+	}
+	for i, epdata := range epdatas {
+		fmt.Printf("ep %d Cid: %v, Part: %s\n", i, epdata.Cid, epdata.Part)
+	}
 }
diff --git a/mock.go b/mock.go
new file mode 100644
index 0000000..f40fb29
--- /dev/null
+++ b/mock.go
@@ -0,0 +1,21 @@
+package main
+
+import (
+	"encoding/json"
+	"os"
+)
+
+type mockProvider struct{}
+
+func (mock *mockProvider) GetEPData(videoNo string) (epdatas []EPData, err error) {
+	file, err := os.Open("mock/" + videoNo + ".json")
+	if err != nil {
+		return epdatas, err
+	}
+	var resp EPResponse
+	err = json.NewDecoder(file).Decode(&resp)
+	if err != nil {
+		return epdatas, err
+	}
+	return resp.Data, nil
+}