import { assign, Machine, createMachine, interpret } from 'xstate';
import { EditContext, EditSchema, EditEvent } from '../index.data';
import { actions, guards } from './helper';

/**
 * @param defaultContext 缺省的context, 目前仅用于测试时预设 context 值
 */
function getMachine(defaultContext = {}) {
  return Machine<EditContext, EditSchema, EditEvent>({
    id: 'row-picker-machine',
    context: { usage: 'row-picker', ...defaultContext } as EditContext,
    initial: 'idle',
    states: {
      idle: {
        on: {
          'MOUSE.DOWN': {
            target: 'selecting.row',
            actions: actions.reSelect,
          },
        },
      },
      selecting: {
        states: {
          cell: {},
          column: {},
          row: {
            on: {
              'MOUSE.DOWN': {
                cond: guards.hasSelected,
                actions: actions.reSelect,
              },
              'MOUSE.MOVE': {
                cond: guards.hasSelected,
                actions: actions.appendSelect,
              },
              'MOUSE.UP': {
                cond: guards.hasSelected,
                actions: actions.appendSelect,
              },
            },
          },
        },
      },
      editing: {},
    },
  });
}

export default getMachine;