feat: support calling Gopeed API via host RPC (#1247)

cmd/host/main.go

@@ -60,10 +60,39 @@ func wakeup(hidden bool) error {
 	return fmt.Errorf("start gopeed failed")
 }
 
+// postToFlutter sends a POST request to Flutter RPC server
+func postToFlutter(path string, body []byte, headers map[string]string, timeout time.Duration) (*http.Response, error) {
+	client := &http.Client{
+		Transport: &http.Transport{
+			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+				return Dial()
+			},
+		},
+		Timeout: timeout,
+	}
+	req, err := http.NewRequest("POST", "http://127.0.0.1"+path, bytes.NewBuffer(body))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	for k, v := range headers {
+		req.Header.Set(k, v)
+	}
+	return client.Do(req)
+}
+
 var apiMap = map[string]func(message *Message) (data any, err error){
 	"ping": func(message *Message) (data any, err error) {
 		return check()
 	},
+	"wakeup": func(message *Message) (data any, err error) {
+		silent := false
+		if v, ok := message.Meta["silent"]; ok {
+			silent, _ = v.(bool)
+		}
+		err = wakeup(silent)
+		return
+	},
 	"create": func(message *Message) (data any, err error) {
 		buf, err := message.Params.MarshalJSON()
 		if err != nil {
@@ -79,24 +108,36 @@ var apiMap = map[string]func(message *Message) (data any, err error){
 			return nil, err
 		}
 
-		client := &http.Client{
-			Transport: &http.Transport{
-				DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-					return Dial()
-				},
-			},
-			Timeout: 10 * time.Second,
+		headers := make(map[string]string)
+		if message.Meta != nil {
+			metaJson, _ := json.Marshal(message.Meta)
+			headers["X-Gopeed-Host-Meta"] = string(metaJson)
 		}
-		req, err := http.NewRequest("POST", "http://127.0.0.1/create", bytes.NewBuffer(buf))
+		_, err = postToFlutter("/create", buf, headers, 10*time.Second)
+		return
+	},
+	"forward": func(message *Message) (data any, err error) {
+		buf, err := message.Params.MarshalJSON()
 		if err != nil {
 			return
 		}
-		if message.Meta != nil {
-			metaJson, _ := json.Marshal(message.Meta)
-			req.Header.Set("X-Gopeed-Host-Meta", string(metaJson))
+
+		resp, err := postToFlutter("/forward", buf, nil, 60*time.Second)
+		if err != nil {
+			return
 		}
-		_, err = client.Do(req)
-		return
+		defer resp.Body.Close()
+
+		respBody, err := io.ReadAll(resp.Body)
+		if err != nil {
+			return nil, err
+		}
+
+		var respData map[string]json.RawMessage
+		if err := json.Unmarshal(respBody, &respData); err != nil {
+			return nil, err
+		}
+		return respData, nil
 	},
 }
 
@@ -108,7 +149,6 @@ func main() {
 		var length uint32
 		if err := binary.Read(os.Stdin, binary.NativeEndian, &length); err != nil {
 			if err == io.EOF {
-				// Connection closed by Chrome
 				return
 			}
 			sendError("Failed to read message length: " + err.Error())