63 lines
2.0 KiB
JavaScript
63 lines
2.0 KiB
JavaScript
const MAX_STEPS = 100;
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export class ComputerUseSession {
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constructor({ stepsMax = 20, grantMinutes = 3, mode = 'act', clock = () => Date.now(), audit } = {}) {
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this.clock = clock;
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this.mode = mode;
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this.grantMinutes = grantMinutes;
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this.stepsMax = Math.min(MAX_STEPS, Math.max(1, stepsMax));
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this.active = false;
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this.stepsUsed = 0;
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this.sessionId = null;
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this.backend = 'none';
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this.expiresAt = null;
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this.audit = audit;
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}
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grant({ persist = false, monitors = 'focused' } = {}) {
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if (this.mode === 'off') throw new Error('Desktop access is disabled in Settings');
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this.active = true;
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this.stepsUsed = 0;
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this.sessionId = `cu_${this.clock().toString(36)}`;
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this.expiresAt = this.clock() + this.grantMinutes * 60 * 1000;
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return { session_id: this.sessionId, restore_token_present: Boolean(persist), monitors, backend: this.backend };
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}
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setBackend(backend) { this.backend = ['portal-ei', 'ydotool', 'none'].includes(backend) ? backend : 'none'; return this.backend; }
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revoke() {
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this.active = false;
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this.sessionId = null;
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this.expiresAt = null;
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this.backend = 'none';
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Promise.resolve(this.audit?.wipeTemp?.()).catch(() => {});
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}
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status() {
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if (this.active && this.expiresAt != null && this.clock() >= this.expiresAt) this.revoke();
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return {
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active: this.active,
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mode: this.mode,
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steps_used: this.stepsUsed,
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steps_max: this.stepsMax,
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grant_expires_at: this.expiresAt,
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backend: this.backend,
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};
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}
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assertActive() {
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if (!this.active) throw new Error('computer-use grant is inactive');
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if (this.expiresAt && this.clock() >= this.expiresAt) {
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this.revoke();
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throw new Error('computer-use grant expired');
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}
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}
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beginStep() {
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this.assertActive();
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if (this.mode !== 'act') throw new Error('Desktop access is observe-only');
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if (this.stepsUsed >= this.stepsMax) throw new Error('computer-use step budget exhausted');
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this.stepsUsed += 1;
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}
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}
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