Added: downloading and returning wikipedia articles

api/httpio/request.go

@@ -0,0 +1,38 @@
+package httpio
+
+import (
+	"encoding/json"
+	"errors"
+	"io"
+	"log"
+	"net/http"
+)
+
+type IRequestIO interface {
+	// Validates the received request.
+	Validate() *HTTPError
+}
+
+// Parses request body into the provided struct.
+// Throws an error if the body could not be parsed.
+func ParseRequestBody[T IRequestIO](r *http.Request) (*T, error) {
+	requestBytes, err := io.ReadAll(r.Body)
+	if err != nil {
+		log.Println(err.Error())
+		return nil, err
+	}
+
+	if !json.Valid(requestBytes) {
+		return nil, errors.New("invalid JSON format")
+	}
+
+	var req T
+	err = json.Unmarshal(requestBytes, &req)
+	if err != nil {
+		log.Println(err.Error())
+		return nil, err
+	}
+
+	return &req, nil
+
+}