// Client-side session-handle generator for the spawn form's instant reroll
// (#23/#27). The spawn form rerolls without a round trip, so the wordlists
// live here; nothing server-side generates handles.

/** Musical adjectives — tempo, dynamics, and articulation markings. */
const ADJECTIVES = [
  "allegro", "andante", "adagio", "presto", "vivace", "largo", "grave", "lento",
  "moderato", "crescendo", "staccato", "legato", "forte", "dolce", "agitato",
  "cantabile", "sostenuto", "tremolo", "rubato", "marcato", "brillante",
  "maestoso", "grazioso", "espressivo", "tranquillo", "animato", "spirito",
  "sotto", "vivo", "feroce",
];

/** Musical nouns — instruments and forms from the concert hall. */
const NOUNS = [
  "cello", "violin", "viola", "oboe", "flute", "clarinet", "bassoon", "trumpet",
  "trombone", "tuba", "horn", "timpani", "harp", "piano", "organ", "lyre",
  "lute", "fugue", "sonata", "octave", "chord", "cadence", "prelude", "rondo",
  "nocturne", "scherzo", "refrain", "coda", "motif", "overture",
];

function pick<T>(list: T[]): T {
  return list[Math.floor(Math.random() * list.length)];
}

/** A fresh `adjective-noun` handle, e.g. `allegro-cello`. */
export function generateName(): string {
  return `${pick(ADJECTIVES)}-${pick(NOUNS)}`;
}