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import fs from "node:fs/promises";
import type { Command } from "commander";
import { randomIdempotencyKey } from "../../gateway/call.js";
import { defaultRuntime } from "../../runtime.js";
import { writeBase64ToFile } from "../nodes-camera.js";
import { canvasSnapshotTempPath, parseCanvasSnapshotPayload } from "../nodes-canvas.js";
import { parseTimeoutMs } from "../nodes-run.js";
import { buildA2UITextJsonl, validateA2UIJsonl } from "./a2ui-jsonl.js";
import { getNodesTheme, runNodesCommand } from "./cli-utils.js";
import { callGatewayCli, nodesCallOpts, resolveNodeId } from "./rpc.js";
import type { NodesRpcOpts } from "./types.js";
import { shortenHomePath } from "../../utils.js";
async function invokeCanvas(opts: NodesRpcOpts, command: string, params?: Record<string, unknown>) {
const nodeId = await resolveNodeId(opts, String(opts.node ?? ""));
const invokeParams: Record<string, unknown> = {
nodeId,
command,
params,
idempotencyKey: randomIdempotencyKey(),
};
const timeoutMs = parseTimeoutMs(opts.invokeTimeout);
if (typeof timeoutMs === "number") {
invokeParams.timeoutMs = timeoutMs;
}
return await callGatewayCli("node.invoke", opts, invokeParams);
}
export function registerNodesCanvasCommands(nodes: Command) {
const canvas = nodes
.command("canvas")
.description("Capture or render canvas content from a paired node");
nodesCallOpts(
canvas
.command("snapshot")
.description("Capture a canvas snapshot (prints MEDIA:<path>)")
.requiredOption("--node <idOrNameOrIp>", "Node id, name, or IP")
.option("--format <png|jpg|jpeg>", "Image format", "jpg")
.option("--max-width <px>", "Max width in px (optional)")
.option("--quality <0-1>", "JPEG quality (optional)")
.option("--invoke-timeout <ms>", "Node invoke timeout in ms (default 20000)", "20000")
.action(async (opts: NodesRpcOpts) => {
await runNodesCommand("canvas snapshot", async () => {
const nodeId = await resolveNodeId(opts, String(opts.node ?? ""));
const formatOpt = String(opts.format ?? "jpg")
.trim()
.toLowerCase();
const formatForParams =
formatOpt === "jpg" ? "jpeg" : formatOpt === "jpeg" ? "jpeg" : "png";
if (formatForParams !== "png" && formatForParams !== "jpeg") {
throw new Error(`invalid format: ${String(opts.format)} (expected png|jpg|jpeg)`);
}
const maxWidth = opts.maxWidth ? Number.parseInt(String(opts.maxWidth), 10) : undefined;
const quality = opts.quality ? Number.parseFloat(String(opts.quality)) : undefined;
const timeoutMs = opts.invokeTimeout
? Number.parseInt(String(opts.invokeTimeout), 10)
: undefined;
const invokeParams: Record<string, unknown> = {
nodeId,
command: "canvas.snapshot",
params: {
format: formatForParams,
maxWidth: Number.isFinite(maxWidth) ? maxWidth : undefined,
quality: Number.isFinite(quality) ? quality : undefined,
},
idempotencyKey: randomIdempotencyKey(),
};
if (typeof timeoutMs === "number" && Number.isFinite(timeoutMs)) {
invokeParams.timeoutMs = timeoutMs;
}
const raw = (await callGatewayCli("node.invoke", opts, invokeParams)) as unknown;
const res = typeof raw === "object" && raw !== null ? (raw as { payload?: unknown }) : {};
const payload = parseCanvasSnapshotPayload(res.payload);
const filePath = canvasSnapshotTempPath({
ext: payload.format === "jpeg" ? "jpg" : payload.format,
});
await writeBase64ToFile(filePath, payload.base64);
if (opts.json) {
defaultRuntime.log(
JSON.stringify({ file: { path: filePath, format: payload.format } }, null, 2),
);
return;
}
defaultRuntime.log(`MEDIA:${shortenHomePath(filePath)}`);
});
}),
{ timeoutMs: 60_000 },
);
nodesCallOpts(
canvas
.command("present")
.description("Show the canvas (optionally with a target URL/path)")
.requiredOption("--node <idOrNameOrIp>", "Node id, name, or IP")
.option("--target <urlOrPath>", "Target URL/path (optional)")
.option("--x <px>", "Placement x coordinate")
.option("--y <px>", "Placement y coordinate")
.option("--width <px>", "Placement width")
.option("--height <px>", "Placement height")
.option("--invoke-timeout <ms>", "Node invoke timeout in ms")
.action(async (opts: NodesRpcOpts) => {
await runNodesCommand("canvas present", async () => {
const placement = {
x: opts.x ? Number.parseFloat(opts.x) : undefined,
y: opts.y ? Number.parseFloat(opts.y) : undefined,
width: opts.width ? Number.parseFloat(opts.width) : undefined,
height: opts.height ? Number.parseFloat(opts.height) : undefined,
};
const params: Record<string, unknown> = {};
if (opts.target) params.url = String(opts.target);
if (
Number.isFinite(placement.x) ||
Number.isFinite(placement.y) ||
Number.isFinite(placement.width) ||
Number.isFinite(placement.height)
) {
params.placement = placement;
}
await invokeCanvas(opts, "canvas.present", params);
if (!opts.json) {
const { ok } = getNodesTheme();
defaultRuntime.log(ok("canvas present ok"));
}
});
}),
);
nodesCallOpts(
canvas
.command("hide")
.description("Hide the canvas")
.requiredOption("--node <idOrNameOrIp>", "Node id, name, or IP")
.option("--invoke-timeout <ms>", "Node invoke timeout in ms")
.action(async (opts: NodesRpcOpts) => {
await runNodesCommand("canvas hide", async () => {
await invokeCanvas(opts, "canvas.hide", undefined);
if (!opts.json) {
const { ok } = getNodesTheme();
defaultRuntime.log(ok("canvas hide ok"));
}
});
}),
);
nodesCallOpts(
canvas
.command("navigate")
.description("Navigate the canvas to a URL")
.argument("<url>", "Target URL/path")
.requiredOption("--node <idOrNameOrIp>", "Node id, name, or IP")
.option("--invoke-timeout <ms>", "Node invoke timeout in ms")
.action(async (url: string, opts: NodesRpcOpts) => {
await runNodesCommand("canvas navigate", async () => {
await invokeCanvas(opts, "canvas.navigate", { url });
if (!opts.json) {
const { ok } = getNodesTheme();
defaultRuntime.log(ok("canvas navigate ok"));
}
});
}),
);
nodesCallOpts(
canvas
.command("eval")
.description("Evaluate JavaScript in the canvas")
.argument("[js]", "JavaScript to evaluate")
.option("--js <code>", "JavaScript to evaluate")
.requiredOption("--node <idOrNameOrIp>", "Node id, name, or IP")
.option("--invoke-timeout <ms>", "Node invoke timeout in ms")
.action(async (jsArg: string | undefined, opts: NodesRpcOpts) => {
await runNodesCommand("canvas eval", async () => {
const js = opts.js ?? jsArg;
if (!js) throw new Error("missing --js or <js>");
const raw = await invokeCanvas(opts, "canvas.eval", {
javaScript: js,
});
if (opts.json) {
defaultRuntime.log(JSON.stringify(raw, null, 2));
return;
}
const payload =
typeof raw === "object" && raw !== null
? (raw as { payload?: { result?: string } }).payload
: undefined;
if (payload?.result) defaultRuntime.log(payload.result);
else {
const { ok } = getNodesTheme();
defaultRuntime.log(ok("canvas eval ok"));
}
});
}),
);
const a2ui = canvas.command("a2ui").description("Render A2UI content on the canvas");
nodesCallOpts(
a2ui
.command("push")
.description("Push A2UI JSONL to the canvas")
.option("--jsonl <path>", "Path to JSONL payload")
.option("--text <text>", "Render a quick A2UI text payload")
.requiredOption("--node <idOrNameOrIp>", "Node id, name, or IP")
.option("--invoke-timeout <ms>", "Node invoke timeout in ms")
.action(async (opts: NodesRpcOpts) => {
await runNodesCommand("canvas a2ui push", async () => {
const hasJsonl = Boolean(opts.jsonl);
const hasText = typeof opts.text === "string";
if (hasJsonl === hasText) {
throw new Error("provide exactly one of --jsonl or --text");
}
const jsonl = hasText
? buildA2UITextJsonl(String(opts.text ?? ""))
: await fs.readFile(String(opts.jsonl), "utf8");
const { version, messageCount } = validateA2UIJsonl(jsonl);
if (version === "v0.9") {
throw new Error(
"Detected A2UI v0.9 JSONL (createSurface). Moltbot currently supports v0.8 only.",
);
}
await invokeCanvas(opts, "canvas.a2ui.pushJSONL", { jsonl });
if (!opts.json) {
const { ok } = getNodesTheme();
defaultRuntime.log(
ok(
`canvas a2ui push ok (v0.8, ${messageCount} message${messageCount === 1 ? "" : "s"})`,
),
);
}
});
}),
);
nodesCallOpts(
a2ui
.command("reset")
.description("Reset A2UI renderer state")
.requiredOption("--node <idOrNameOrIp>", "Node id, name, or IP")
.option("--invoke-timeout <ms>", "Node invoke timeout in ms")
.action(async (opts: NodesRpcOpts) => {
await runNodesCommand("canvas a2ui reset", async () => {
await invokeCanvas(opts, "canvas.a2ui.reset", undefined);
if (!opts.json) {
const { ok } = getNodesTheme();
defaultRuntime.log(ok("canvas a2ui reset ok"));
}
});
}),
);
}
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