1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";
import { type BrowserClient, createBrowserClient } from "./client";
import { getBrowserSystemPrompt } from "./prompt";
import { registerSetupCommand } from "./setup";
import { registerProfileCommand } from "./profile/command";
import { readPin } from "./profile/store";
import { type BrowserState, defaultState, persistState, restoreState } from "./state";
import { registerAllTools } from "./registry";
import { cleanupTempDirs } from "./util/truncate";
import { createDaemonTransport } from "./daemon/transport";
import { setDebugClicks } from "./util/debug";
import { asBoolean, asString } from "./util/guards";
export default function browserHarnessExtension(pi: ExtensionAPI): void {
const flagNs = asString(pi.getFlag("browser-namespace"));
const namespace = flagNs ?? `pi-${Math.random().toString(36).slice(2, 10)}`;
let state: BrowserState = defaultState(namespace);
let client: BrowserClient | null = null;
let toolsRegistered = false;
pi.registerFlag("browser-namespace", {
description: "Browser daemon namespace. Default: auto-generated",
type: "string",
});
pi.registerFlag("browser-debug-clicks", {
description: "Enable debug click overlay (saves annotated screenshots to /tmp)",
type: "boolean",
default: false,
});
pi.registerCommand("browser-status", {
description: "Show browser connection status and current page",
handler: async (_args, ctx) => {
if (!client) {
ctx.ui.notify("Browser client not started. Run /browser-setup first.", "warning");
return;
}
const s = client.status();
const pin = client.profilePin();
const lines = [
`Browser: ${s.alive ? "š¢ Connected" : "š“ Disconnected"}`,
`Profile: ${pin ? pin.label : "not selected (uses whichever window is focused) ā run /browser-profile"}`,
`Session: ${s.sessionId ?? "none"}`,
];
if (s.remoteBrowserId) lines.push(`Browser ID: ${s.remoteBrowserId}`);
if (s.alive) {
const info = await client.pageInfo();
if (info.success) {
if ("dialog" in info.data) {
lines.push(`\nā ļø Dialog open: ${info.data.dialog.type} ā "${info.data.dialog.message}"`);
} else {
lines.push(
`\nCurrent Page:`,
` URL: ${info.data.url}`,
` Title: ${info.data.title}`,
` Viewport: ${info.data.width}x${info.data.height}`,
);
}
}
}
ctx.ui.notify(lines.join("\n"), "info");
},
});
pi.registerCommand("browser-reload-daemon", {
description: "Restart the browser client",
handler: async (_args, ctx) => {
if (!client) {
ctx.ui.notify("Browser client not started.", "warning");
return;
}
ctx.ui.notify("Restarting browser client...", "info");
await client.stop();
const r = await client.start();
if (r.success) {
ctx.ui.notify("Browser client restarted ā", "info");
} else {
ctx.ui.notify(`Restart failed: ${r.error.message}`, "error");
}
},
});
pi.on("session_start", async (_event, ctx) => {
state = restoreState(ctx, state.namespace);
setDebugClicks(asBoolean(pi.getFlag("browser-debug-clicks")) ?? false);
// Re-read the on-disk profile pin every session start: another pi session may have changed it since this client was created.
const profilePin = await readPin();
if (!client) {
const transport = createDaemonTransport(state.namespace);
const initialOwnership: { ownedTargetIds?: ReadonlyArray<string>; harnessWindowTargetId?: string; harnessWindowId?: number } = {};
if (state.ownedTargetIds !== undefined) initialOwnership.ownedTargetIds = state.ownedTargetIds;
if (state.harnessWindowTargetId !== undefined) initialOwnership.harnessWindowTargetId = state.harnessWindowTargetId;
if (state.harnessWindowId !== undefined) initialOwnership.harnessWindowId = state.harnessWindowId;
client = createBrowserClient({
namespace: state.namespace,
transport,
profilePin,
...(Object.keys(initialOwnership).length > 0 ? { initialOwnership } : {}),
onOwnershipChange: (snap) => {
state = {
...state,
ownedTargetIds: snap.ownedTargetIds,
...(snap.harnessWindowTargetId !== undefined
? { harnessWindowTargetId: snap.harnessWindowTargetId }
: {}),
...(snap.harnessWindowId !== undefined
? { harnessWindowId: snap.harnessWindowId }
: {}),
};
try { persistState(pi, state); } catch {}
},
});
} else {
client.setProfilePin(profilePin);
}
if (!toolsRegistered) {
registerAllTools(pi, client);
toolsRegistered = true;
}
registerSetupCommand(pi, client);
registerProfileCommand(pi, client);
});
pi.on("session_shutdown", async () => {
if (client) {
try {
await client.detach();
await client.closeOwnedTabs();
} catch (e) {
console.warn("[pi-browser-harness] browser teardown failed during shutdown:", e);
}
// Do NOT stop the client or null it out: the surviving daemon connection is what eliminates the per-session "Allow Remote Debugging" prompt.
}
persistState(pi, state);
await cleanupTempDirs();
});
pi.on("session_tree", async (_event, ctx) => {
state = restoreState(ctx, client?.namespace);
persistState(pi, state);
});
pi.on("before_agent_start", async (event) => {
if (!client || !client.status().alive) {
return {
systemPrompt:
event.systemPrompt +
`\n\n## Browser Control\n\nBrowser tools (browser_*) are available but the browser is not connected. Run /browser-setup.`,
};
}
return { systemPrompt: event.systemPrompt + getBrowserSystemPrompt() };
});
}
|
