/** 语句：if 条件判断（解析在此，执行在 sequence-runner）；须同时含 then、else 数组（可无分支写 []） */
const { assertStrictKeys } = require('../action-schema.js')
const types = ['if']

function parse (action, parseContext) {
  const path = parseContext.actionPath || 'if'
  assertStrictKeys(action, ['type', 'condition', 'then', 'else'], path)
  if (!Array.isArray(action.then)) {
    throw new Error(`${path}: if 须包含数组 then`)
  }
  if (!Array.isArray(action.else)) {
    throw new Error(`${path}: if 须包含数组 else（无 else 分支写 []）`)
  }
  return {
    type: 'if',
    condition: action.condition,
    then: parseContext.parseActions(action.then, 'then'),
    else: parseContext.parseActions(action.else, 'else'),
  }
}

async function execute() {
  return { success: true }
}

module.exports = { types, parse, execute }