budibase/packages/builder/src/builderStore/getNewComponentName.js

import { walkProps } from "./storeUtils"
import { get_capitalised_name } from "../helpers"
import { get } from "svelte/store"
import { allScreens } from "builderStore"
import { FrontendTypes } from "../constants"
import { currentAsset } from "."

export default function(component, state) {
  const capitalised = get_capitalised_name(
    component.name || component._component
  )

  const matchingComponents = []

  const findMatches = props => {
    walkProps(props, c => {
      const thisInstanceName = get_capitalised_name(c._instanceName)
      if ((thisInstanceName || "").startsWith(capitalised)) {
        matchingComponents.push(thisInstanceName)
      }
    })
  }

  // check layouts first
  for (let layout of state.layouts) {
    findMatches(layout.props)
  }

  // if viewing screen, check current screen for duplicate
  if (state.currentFrontEndType === FrontendTypes.SCREEN) {
    findMatches(get(currentAsset).props)
  } else {
    // viewing a layout - need to find against all screens
    for (let screen of get(allScreens)) {
      findMatches(screen.props)
    }
  }

  let index = 1
  let name
  while (!name) {
    const tryName = `${capitalised || "Copy"} ${index}`
    if (!matchingComponents.includes(tryName)) name = tryName
    index++
  }

  return name
}