Files
pi-config/extensions/steel-browser/src/index.ts

104 lines
3.2 KiB
TypeScript

import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";
import { resolveSessionMode, type SteelSessionMode } from "./session-mode.js";
import { SteelClient } from "./steel-client.js";
import { clickTool } from "./tools/click.js";
import { computerTool } from "./tools/computer.js";
import { extractTool } from "./tools/extract.js";
import { findElementsTool } from "./tools/find-elements.js";
import { fillFormTool } from "./tools/fill-form.js";
import { getTitleTool, getUrlTool, goBackTool } from "./tools/navigation.js";
import { navigateTool } from "./tools/navigate.js";
import { pdfTool } from "./tools/pdf.js";
import { scrapeTool } from "./tools/scrape.js";
import { screenshotTool } from "./tools/screenshot.js";
import { scrollTool } from "./tools/scroll.js";
import { pinSessionTool, releaseSessionTool } from "./tools/session-control.js";
import { typeTool } from "./tools/type.js";
import { waitTool } from "./tools/wait.js";
export default function steelExtension(pi: ExtensionAPI): void {
const steelClient = new SteelClient();
const defaultSessionMode = resolveSessionMode();
let sessionMode = defaultSessionMode;
let closingSessions: Promise<void> | null = null;
const closeSessions = async (reason: string) => {
if (!closingSessions) {
closingSessions = (async () => {
try {
await steelClient.closeAllSessions();
} catch (error: unknown) {
// Cleanup failures should not break the main agent response path.
console.warn(`[steel] session cleanup failed (${reason})`, error);
} finally {
closingSessions = null;
}
})();
}
await closingSessions;
};
const sessionController = {
getDefaultSessionMode: () => defaultSessionMode,
getSessionMode: () => sessionMode,
setSessionMode: (mode: SteelSessionMode) => {
sessionMode = mode;
},
closeSessions,
};
const tools = [
navigateTool(steelClient),
scrapeTool(steelClient),
screenshotTool(steelClient),
pdfTool(steelClient),
clickTool(steelClient),
computerTool(steelClient),
findElementsTool(steelClient),
typeTool(steelClient),
fillFormTool(steelClient),
waitTool(steelClient),
extractTool(steelClient),
scrollTool(steelClient),
goBackTool(steelClient),
getUrlTool(steelClient),
getTitleTool(steelClient),
pinSessionTool(steelClient, sessionController),
releaseSessionTool(steelClient, sessionController),
];
for (const tool of tools) {
pi.registerTool(tool);
}
pi.on("turn_end", async () => {
if (sessionMode === "turn") {
await closeSessions("turn_end");
}
});
pi.on("agent_end", async () => {
if (sessionMode === "agent") {
await closeSessions("agent_end");
}
});
// Defensive cleanup for interactive session switches/forks.
pi.on("session_before_switch", async () => {
await closeSessions("session_before_switch");
});
pi.on("session_shutdown", async () => {
await closeSessions("session_shutdown");
});
const shutdownApi = pi as ExtensionAPI & {
onShutdown?: (handler: () => Promise<void> | void) => void;
};
shutdownApi.onShutdown?.(async () => {
await closeSessions("onShutdown");
});
}