WeKnora deployment source with the reviewed wiki identity, summary and recovery fixes

internal/im/slack/factory.go

@@ -0,0 +1,52 @@
+package slack
+
+import (
+	"context"
+	"fmt"
+
+	slackpkg "github.com/slack-go/slack"
+
+	"github.com/Tencent/WeKnora/internal/im"
+	"github.com/Tencent/WeKnora/internal/logger"
+)
+
+// NewFactory returns an im.AdapterFactory for Slack channels.
+// Supports "webhook" (Events API) and "websocket" (Socket Mode, default).
+func NewFactory() im.AdapterFactory {
+	return func(factoryCtx context.Context, channel *im.IMChannel, msgHandler func(context.Context, *im.IncomingMessage) error) (im.Adapter, context.CancelFunc, error) {
+		creds, err := im.ParseCredentials(channel.Credentials)
+		if err != nil {
+			return nil, nil, fmt.Errorf("parse slack credentials: %w", err)
+		}
+
+		mode := im.ResolveMode(channel, "websocket")
+
+		switch mode {
+		case "webhook":
+			api := slackpkg.New(im.GetString(creds, "bot_token"))
+			adapter := NewWebhookAdapter(api, im.GetString(creds, "signing_secret"))
+			return adapter, func() {}, nil
+
+		case "websocket":
+			client := NewLongConnClient(
+				im.GetString(creds, "app_token"),
+				im.GetString(creds, "bot_token"),
+				msgHandler,
+			)
+
+			adapter := NewAdapter(client, client.GetAPI())
+
+			wsCtx, wsCancel := context.WithCancel(context.Background())
+			go func() {
+				if err := client.Start(wsCtx); err != nil && wsCtx.Err() == nil {
+					logger.Errorf(context.Background(), "[IM] Slack long connection stopped for channel %s: %v", channel.ID, err)
+				}
+			}()
+
+			return adapter, wsCancel, nil
+
+		default:
+			return nil, nil, fmt.Errorf("unsupported slack mode: %s", mode)
+		}
+	}
+}