first commit

apps/backend/internal/authsession/client.go

@@ -0,0 +1,66 @@
+package authsession
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+)
+
+type User struct {
+	ID    string `json:"id"`
+	Name  string `json:"name"`
+	Email string `json:"email"`
+}
+
+type sessionEnvelope struct {
+	User *User `json:"user"`
+}
+
+type Client struct {
+	baseURL    string
+	httpClient *http.Client
+}
+
+func NewClient(baseURL string) *Client {
+	return &Client{
+		baseURL: strings.TrimRight(baseURL, "/"),
+		httpClient: &http.Client{
+			Timeout: 5 * time.Second,
+		},
+	}
+}
+
+func (c *Client) GetUser(ctx context.Context, cookieHeader string) (*User, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, c.baseURL+"/api/auth/get-session", nil)
+	if err != nil {
+		return nil, fmt.Errorf("create auth session request: %w", err)
+	}
+
+	if cookieHeader != "" {
+		req.Header.Set("Cookie", cookieHeader)
+	}
+
+	res, err := c.httpClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("request auth session: %w", err)
+	}
+	defer res.Body.Close()
+
+	if res.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("auth session status: %s", res.Status)
+	}
+
+	var payload *sessionEnvelope
+	if err := json.NewDecoder(res.Body).Decode(&payload); err != nil {
+		return nil, fmt.Errorf("decode auth session: %w", err)
+	}
+
+	if payload == nil || payload.User == nil {
+		return nil, nil
+	}
+
+	return payload.User, nil
+}