import { PROPERTIES } from '../../nested';
import type { NodeDef } from '../../NodeRegistry';
import {
  OBJECT_BEHAVIOR_SETTING,
  OBJECT_TYPE_SETTING,
  propertiesTitle,
  propertyPort,
} from '../../propertyPorts';
import { asEntity, writeTyped } from '../../values';
import { exec, obj } from '../shared';

export const Properties: NodeDef = {
  type: PROPERTIES,
  label: 'Properties',
  category: 'data',
  description:
    'Reads properties (width, color, a variable, …) of the object it is handed, at any time. Those ' +
    'switched to Set are written together when the flow arrives.',
  inputs: [obj('object')],
  outputs: [],
  params: [OBJECT_TYPE_SETTING, OBJECT_BEHAVIOR_SETTING],
  // The title names both ("Sprite properties", "Game properties").
  hiddenParams: () => [OBJECT_TYPE_SETTING.key, OBJECT_BEHAVIOR_SETTING.key],
  declaresPorts: 'both',
  declaredPort: (port, node) => propertyPort(port, node.params),
  derivePorts: ({ node, behaviors }) => {
    const label = propertiesTitle(node, behaviors);
    return (node.ports ?? []).some((p) => p.write) ? { label, inputs: [exec()], outputs: [exec()] } : { label };
  },
  read: (_ctx, _params, input) => asEntity(input('object'))?.props ?? {},
  run: (_ctx, inputs, _params, def) => {
    const target = asEntity(inputs.object);
    if (target)
      for (const port of def.inputs)
        if (port.type !== 'exec' && port.key !== 'object') writeTyped(target.props, port.key, inputs[port.key]);
    return { next: 'exec' };
  },
};