57 lines
2.0 KiB
JavaScript
57 lines
2.0 KiB
JavaScript
const STATES = ['ARMED', 'LISTENING', 'THINKING', 'SPEAKING', 'SLEEPING'];
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const COMMANDS = new Map([
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['cancel', 'cancel'], ['stop', 'cancel'], ['never mind', 'cancel'],
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['hands off', 'cancel'], ['stop clicking', 'cancel'], ["that's enough", 'cancel'],
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['go to sleep', 'sleep'], ['privacy mode', 'sleep'],
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]);
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export class VoiceStateMachine {
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constructor({ now = () => Date.now(), idleMs = 30 * 60 * 1000 } = {}) {
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this.now = now;
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this.idleMs = idleMs;
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this.state = 'ARMED';
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this.lastActivity = now();
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}
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transition(next, reason = 'unspecified') {
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if (!STATES.includes(next)) throw new Error(`unknown Jarvis state: ${next}`);
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const allowed = {
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ARMED: ['LISTENING', 'SLEEPING'], LISTENING: ['THINKING', 'ARMED', 'SLEEPING'],
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THINKING: ['SPEAKING', 'ARMED', 'LISTENING'], SPEAKING: ['LISTENING', 'ARMED'],
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SLEEPING: ['LISTENING', 'ARMED'],
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};
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if (next !== this.state && !allowed[this.state].includes(next)) {
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throw new Error(`invalid state transition ${this.state} -> ${next}`);
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}
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const previous = this.state;
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this.state = next;
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this.lastActivity = this.now();
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return { previous, state: next, reason };
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}
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wake() { return this.transition('LISTENING', 'wake'); }
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utterance() { return this.transition('THINKING', 'utterance'); }
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typedUtterance() {
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if (this.state === 'ARMED' || this.state === 'SLEEPING') this.wake();
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return this.utterance();
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}
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speak() { return this.transition('SPEAKING', 'reply'); }
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finishSpeaking() { return this.transition('LISTENING', 'playback-finished'); }
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cancel() { return this.transition('ARMED', 'cancel'); }
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sleep() { return this.transition('SLEEPING', 'idle-or-privacy'); }
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command(text) {
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const command = COMMANDS.get(String(text || '').trim().toLowerCase());
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if (command === 'cancel') this.cancel();
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if (command === 'sleep') this.sleep();
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return command || null;
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}
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expireIdle() {
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if (this.state !== 'SLEEPING' && this.now() - this.lastActivity >= this.idleMs) this.sleep();
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return this.state;
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}
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}
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export { STATES };
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