Support SQL Agent skill (#1411)

* Support SQL Agent skill

* add MSSQL agent connector

* Add frontend to agent skills
remove FAKE_DB mock
reset skills to pickup child-skill dynamically

* add prompt examples for tools on untooled

* add better logging on SQL agents

* Wipe toolruns on each chat relay so tools can be used within the same session

* update comments

server/utils/agents/aibitat/plugins/sql-agent/SQLConnectors/index.js

@@ -0,0 +1,60 @@
+const { SystemSettings } = require("../../../../../../models/systemSettings");
+const { safeJsonParse } = require("../../../../../http");
+
+/**
+ * @typedef {('postgresql'|'mysql'|'sql-server')} SQLEngine
+ */
+
+/**
+ * @typedef {Object} QueryResult
+ * @property {[number]} rows - The query result rows
+ * @property {number} count - Number of rows the query returned/changed
+ * @property {string|null} error - Error string if there was an issue
+ */
+
+/**
+ * A valid database SQL connection object
+ * @typedef {Object} SQLConnection
+ * @property {string} database_id - Unique identifier of the database connection
+ * @property {SQLEngine} engine - Engine used by connection
+ * @property {string} connectionString - RFC connection string for db
+ */
+
+/**
+ * @param {SQLEngine} identifier
+ * @param {object} connectionConfig
+ * @returns Database Connection Engine Class for SQLAgent or throws error
+ */
+function getDBClient(identifier = "", connectionConfig = {}) {
+  switch (identifier) {
+    case "mysql":
+      const { MySQLConnector } = require("./MySQL");
+      return new MySQLConnector(connectionConfig);
+    case "postgresql":
+      const { PostgresSQLConnector } = require("./Postgresql");
+      return new PostgresSQLConnector(connectionConfig);
+    case "sql-server":
+      const { MSSQLConnector } = require("./MSSQL");
+      return new MSSQLConnector(connectionConfig);
+    default:
+      throw new Error(
+        `There is no supported database connector for ${identifier}`
+      );
+  }
+}
+
+/**
+ * Lists all of the known database connection that can be used by the agent.
+ * @returns {Promise<[SQLConnection]>}
+ */
+async function listSQLConnections() {
+  return safeJsonParse(
+    (await SystemSettings.get({ label: "agent_sql_connections" }))?.value,
+    []
+  );
+}
+
+module.exports = {
+  getDBClient,
+  listSQLConnections,
+};