81 lines
2.5 KiB
TypeScript
81 lines
2.5 KiB
TypeScript
import { randomUUID } from "node:crypto";
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import * as fs from "node:fs/promises";
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import * as os from "node:os";
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import * as path from "node:path";
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export type CameraFacing = "front" | "back";
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export type CameraSnapPayload = {
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format: string;
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base64: string;
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width: number;
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height: number;
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};
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export type CameraClipPayload = {
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format: string;
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base64: string;
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durationMs: number;
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hasAudio: boolean;
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};
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function asRecord(value: unknown): Record<string, unknown> {
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return typeof value === "object" && value !== null ? (value as Record<string, unknown>) : {};
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}
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function asString(value: unknown): string | undefined {
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return typeof value === "string" ? value : undefined;
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}
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function asNumber(value: unknown): number | undefined {
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return typeof value === "number" && Number.isFinite(value) ? value : undefined;
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}
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function asBoolean(value: unknown): boolean | undefined {
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return typeof value === "boolean" ? value : undefined;
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}
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export function parseCameraSnapPayload(value: unknown): CameraSnapPayload {
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const obj = asRecord(value);
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const format = asString(obj.format);
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const base64 = asString(obj.base64);
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const width = asNumber(obj.width);
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const height = asNumber(obj.height);
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if (!format || !base64 || width === undefined || height === undefined) {
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throw new Error("invalid camera.snap payload");
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}
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return { format, base64, width, height };
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}
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export function parseCameraClipPayload(value: unknown): CameraClipPayload {
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const obj = asRecord(value);
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const format = asString(obj.format);
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const base64 = asString(obj.base64);
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const durationMs = asNumber(obj.durationMs);
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const hasAudio = asBoolean(obj.hasAudio);
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if (!format || !base64 || durationMs === undefined || hasAudio === undefined) {
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throw new Error("invalid camera.clip payload");
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}
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return { format, base64, durationMs, hasAudio };
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}
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export function cameraTempPath(opts: {
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kind: "snap" | "clip";
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facing?: CameraFacing;
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ext: string;
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tmpDir?: string;
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id?: string;
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}) {
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const tmpDir = opts.tmpDir ?? os.tmpdir();
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const id = opts.id ?? randomUUID();
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const facingPart = opts.facing ? `-${opts.facing}` : "";
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const ext = opts.ext.startsWith(".") ? opts.ext : `.${opts.ext}`;
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return path.join(tmpDir, `clawdbot-camera-${opts.kind}${facingPart}-${id}${ext}`);
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}
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export async function writeBase64ToFile(filePath: string, base64: string) {
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const buf = Buffer.from(base64, "base64");
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await fs.writeFile(filePath, buf);
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return { path: filePath, bytes: buf.length };
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}
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