Add GetUser to UserClient

server/userclient.go

@@ -7,6 +7,8 @@ import (
 	"fmt"
 	"net/http"
 	"time"
+
+	"git.t-juice.club/microfilm/users"
 )
 
 type UserClient struct {
@@ -53,3 +55,36 @@ func (c *UserClient) VerifyUserPassword(username, password string) error {
 
 	return nil
 }
+
+func (c *UserClient) GetUser(identifier string) (users.User, error) {
+	var u users.User
+
+	ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout)
+	defer cancel()
+
+	url := fmt.Sprintf("%s/%s", c.BaseURL, identifier)
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, nil)
+	if err != nil {
+		return u, err
+	}
+
+	client := http.Client{}
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return u, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return u, fmt.Errorf("authentication failed")
+	}
+
+	decoder := json.NewDecoder(resp.Body)
+	if err := decoder.Decode(&u); err != nil {
+		return u, err
+	}
+
+	return u, nil
+}