import { KIND, kindLabel, type VariableKind } from '../../../properties/kinds';
import { coerceValue, flatDef, type PropertyDef } from '../../../properties/PropertySchema';
import type { NodeDef } from '../../NodeRegistry';

/** A node handing out one constant of a kind: its one setting, edited as that kind, is its output. */
function literal(type: string, kind: Exclude<VariableKind, 'struct'>, description: string): NodeDef {
  const value: PropertyDef =
    kind === 'list'
      ? { key: 'value', label: 'Value', kind, default: [] }
      : kind === 'number'
        ? { ...flatDef('value', kind, { label: 'Value' }), step: 1 }
        : flatDef('value', kind, { label: 'Value' });
  return {
    type,
    label: kindLabel(kind),
    category: 'data',
    description,
    inputs: [],
    outputs: [{ key: 'value', label: 'value', type: KIND[kind].travels }],
    params: [value],
    run: (_ctx, _inputs, params) => ({ outputs: { value: coerceValue(value, params.value ?? value.default) } }),
  };
}

export const NumberLiteral = literal('Number', 'number', 'A constant number.');
export const BooleanLiteral = literal('Boolean', 'boolean', 'A constant true/false.');
export const StringLiteral = literal('String', 'text', 'A constant text.');
export const TextureLiteral = literal(
  'Texture',
  'texture',
  'A constant picture: a texture or one of its frames, as a sprite wears it.',
);
export const StateMachineLiteral = literal(
  'StateMachine',
  'statemachine',
  'A constant state machine, for a "State branch" or a "Set state" to work on.',
);
export const SoundLiteral = literal(
  'Sound',
  'sound',
  'A constant sound, for a "Play sound" or a "Stop sound" to work on.',
);
export const SceneLiteral = literal(
  'Scene',
  'scene',
  'A constant scene, for a "Load scene" to work on.',
);
export const AnimationLiteral = literal(
  'Animation',
  'animation',
  'A constant animation, for a "Play animation", "Pause animation" or "Stop animation" to work on.',
);
export const ListLiteral = literal(
  'List',
  'list',
  'A constant list, edited item by item in the List tab – each item with its own kind.',
);