Add connector with OAuth2 support

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

pkg/connector/registry.go

@@ -0,0 +1,69 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package connector
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"sync"
+)
+
+type (
+	ConnectorRegistry struct {
+		sync.RWMutex
+		connectors map[string]Connector
+	}
+)
+
+func NewConnectorRegistry() *ConnectorRegistry {
+	return &ConnectorRegistry{
+		connectors: make(map[string]Connector),
+	}
+}
+
+func (cr *ConnectorRegistry) Register(connectorID string, connector Connector) {
+	cr.Lock()
+	defer cr.Unlock()
+	cr.connectors[connectorID] = connector
+}
+
+func (cr *ConnectorRegistry) Get(connectorID string) (Connector, error) {
+	cr.RLock()
+	defer cr.RUnlock()
+	connector, ok := cr.connectors[connectorID]
+	if !ok {
+		return nil, fmt.Errorf("connector %q not found", connectorID)
+	}
+	return connector, nil
+}
+
+func (cr *ConnectorRegistry) Initiate(ctx context.Context, connectorID string, organizationID string, r *http.Request) (string, error) {
+	connector, err := cr.Get(connectorID)
+	if err != nil {
+		return "", fmt.Errorf("cannot initiate connector: %w", err)
+	}
+
+	return connector.Initiate(ctx, connectorID, organizationID, r)
+}
+
+func (cr *ConnectorRegistry) Complete(ctx context.Context, connectorID string, organizationID string, r *http.Request) (Connection, error) {
+	connector, err := cr.Get(connectorID)
+	if err != nil {
+		return nil, fmt.Errorf("cannot complete connector: %w", err)
+	}
+
+	return connector.Complete(ctx, connectorID, organizationID, r)
+}