account page stubbed: link to etsy sign up

internal/domains/platforms/etsy/client.go

@@ -0,0 +1,47 @@
+package etsy
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"ruben/inventory2/internal/domains/platforms/etsy/generated_client"
+)
+
+func newFixedAccessTokenClient(apiKey, accessToken string) (*generated_client.ClientWithResponses, error) {
+	return newAuthenticatingClient(apiKey, func(ctx context.Context) (string, error) {
+		return accessToken, nil
+	})
+}
+
+func newAccessTokenRefreshingClient(apiKey string) (*generated_client.ClientWithResponses, error) {
+	return newAuthenticatingClient(apiKey, func(ctx context.Context) (string, error) {
+		// TODO: look up the token in the db.
+		return "", nil
+	})
+}
+
+func newAuthenticatingClient(apiKey string, getAccessToken func(context.Context) (string, error)) (*generated_client.ClientWithResponses, error) {
+	var setAuthHeaders generated_client.ClientOption = func(c *generated_client.Client) error {
+		c.RequestEditors = append(c.RequestEditors, generated_client.RequestEditorFn(func(ctx context.Context, req *http.Request) error {
+			accessToken, err := getAccessToken(req.Context())
+			if err != nil {
+				return err
+			}
+
+			h := req.Header
+			h.Set("x-api-key", apiKey)
+			h.Set("Authorization", fmt.Sprintf("Bearer %s", accessToken))
+
+			return nil
+		}))
+		return nil
+	}
+
+	c, err := generated_client.NewClientWithResponses("https://api.etsy.com", setAuthHeaders)
+	if err != nil {
+		return nil, fmt.Errorf("failed to initialize open api client: %w", err)
+	}
+
+	return c, nil
+}