Add connector config support

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

pkg/probod/connector_config.go

@@ -0,0 +1,75 @@
+// 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 probod
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/getprobo/probo/pkg/connector"
+)
+
+type (
+	connectorConfig struct {
+		Name   string              `json:"name"`
+		Type   string              `json:"type"`
+		Config connector.Connector `json:"-"`
+	}
+
+	connectorOAuth2Config struct {
+		ClientID     string   `json:"client-id"`
+		ClientSecret string   `json:"client-secret"`
+		RedirectURI  string   `json:"redirect-uri"`
+		Scopes       []string `json:"scopes"`
+		AuthURL      string   `json:"auth-url"`
+		TokenURL     string   `json:"token-url"`
+	}
+)
+
+func (c *connectorConfig) UnmarshalJSON(data []byte) error {
+	var tmp struct {
+		Name      string          `json:"name"`
+		Type      string          `json:"type"`
+		RawConfig json.RawMessage `json:"config"`
+	}
+
+	if err := json.Unmarshal(data, &tmp); err != nil {
+		return fmt.Errorf("cannot unmarshal connector config: %w", err)
+	}
+
+	c.Name = tmp.Name
+	c.Type = tmp.Type
+
+	switch tmp.Type {
+	case "oauth2":
+		var cfg connectorOAuth2Config
+		if err := json.Unmarshal(tmp.RawConfig, &cfg); err != nil {
+			return fmt.Errorf("cannot unmarshal oauth2 config: %w", err)
+		}
+
+		c.Config = &connector.OAuth2Connector{
+			ClientID:     cfg.ClientID,
+			ClientSecret: cfg.ClientSecret,
+			RedirectURI:  cfg.RedirectURI,
+			Scopes:       cfg.Scopes,
+			AuthURL:      cfg.AuthURL,
+			TokenURL:     cfg.TokenURL,
+		}
+	default:
+		return fmt.Errorf("unknown %q connector type: %s", tmp.Name, tmp.Type)
+	}
+
+	return nil
+}