v0.1.0 (#17)

pkg/auth/oauth/provider.go

@@ -0,0 +1,41 @@
+package oauth
+
+import "context"
+
+// UserProfile is the normalized user info returned by an OAuth provider.
+type UserProfile struct {
+	ProviderID string
+	Email      string
+	Name       string
+}
+
+// Provider abstracts an OAuth 2.0 identity provider.
+type Provider interface {
+	// Name returns the provider identifier (e.g. "github", "google").
+	Name() string
+	// AuthCodeURL returns the URL to redirect the user to for authorization.
+	AuthCodeURL(state string) string
+	// Exchange trades an authorization code for a user profile.
+	Exchange(ctx context.Context, code string) (UserProfile, error)
+}
+
+// Registry maps provider names to Provider implementations.
+type Registry struct {
+	providers map[string]Provider
+}
+
+// NewRegistry creates an empty provider registry.
+func NewRegistry() *Registry {
+	return &Registry{providers: make(map[string]Provider)}
+}
+
+// Register adds a provider to the registry.
+func (r *Registry) Register(p Provider) {
+	r.providers[p.Name()] = p
+}
+
+// Get looks up a provider by name.
+func (r *Registry) Get(name string) (Provider, bool) {
+	p, ok := r.providers[name]
+	return p, ok
+}