[DRAFT] [WIP] Add in builtin listener for token revoked and app uninstalled events

src/listener/builtin.ts

@@ -0,0 +1,67 @@
+import { InstallationStore, InstallationQuery } from "@slack/oauth";
+import { ConsoleLogger, Logger, LogLevel } from '@slack/logger';
+import { Context } from "../types";
+
+export class TokenRevocationListeners {
+  private installationStore: InstallationStore;
+  private logger: Logger;
+
+  public constructor(installationStore: InstallationStore, logger: Logger, logLevel = LogLevel.INFO,) {
+    this.installationStore = installationStore;
+    this.logger =
+      logger ??
+      (() => {
+        const defaultLogger = new ConsoleLogger();
+        defaultLogger.setLevel(logLevel);
+        return defaultLogger;
+      })();
+  }
+
+  public handleTokensRevokedEvents(context: Context) {
+    const isEnterpriseInstall = context.isEnterpriseInstall;
+
+    const installQuery: InstallationQuery<typeof isEnterpriseInstall> = {
+      isEnterpriseInstall: isEnterpriseInstall,
+      teamId: context.teamId,
+      enterpriseId: context.enterpriseId,
+      userId: context.userId,
+    };
+
+    if (this.installationStore.deleteInstallation) {
+      this.installationStore.deleteInstallation(installQuery, this.logger);
+      /**
+       * deleteInstallation with enterprise/team_id + user_id -> delete only user tokens
+        deleteBot with enterprise/team_id -> delete only bot tokens
+        deleteAll with enterprise/team_id -> delete both bot and user tokens
+      */
+    } else {
+      throw new Error(
+        'Custom InstallationStore must have deleteInstallation method implemented',
+      );
+    }
+  }
+
+  public handleAppUninstalledEvents(context: Context) {
+    const isEnterpriseInstall = context.isEnterpriseInstall;
+
+    const installQuery: InstallationQuery<typeof isEnterpriseInstall> = {
+      isEnterpriseInstall: isEnterpriseInstall,
+      teamId: context.teamId,
+      enterpriseId: context.enterpriseId,
+      userId: context.userId,
+    };
+
+    if (this.installationStore.deleteInstallation) {
+      this.installationStore.deleteInstallation(installQuery, this.logger);
+      /**
+       * deleteInstallation with enterprise/team_id + user_id -> delete only user tokens
+        deleteBot with enterprise/team_id -> delete only bot tokens
+        deleteAll with enterprise/team_id -> delete both bot and user tokens
+      */
+    } else {
+      throw new Error(
+        'Custom InstallationStore must have deleteInstallation method implemented',
+      );
+    }
+  }
+}