import { supportedInputTypes } from './constant'
import { Props } from './props'

import type { FormElement, TaroElement } from '@tarojs/runtime'
import type { RestoreType } from './event'

// 从 props 中，更新 input 组件的 value 值
function updateInputWrapper (element: TaroElement, oldValue: RestoreType, props: Props) {
  const node = element
  const checked = props.checked

  if (checked != null) {
    console.warn('updateCheck 未实现', node)
    return
  }

  updateWrapper(element, oldValue, props)
  updateNamedCousins(element, props)
}

// react 中原本处理 type=radio 的逻辑，这里留个空，暂时不处理
function updateNamedCousins (rootNode, props) {
  const name = props.name

  if (props.type === 'radio' && name != null) {
    console.warn('radio updateNamedCousins 未实现', rootNode, props)
  }
}

export function getToStringValue (value: any) {
  const isEmptyType = typeof value === 'function' || typeof value === 'symbol'

  return isEmptyType ? '' : value
}

export function toString (value): string {
  return '' + value
}

export function updateWrapper (element: TaroElement, oldValue: RestoreType, props: Props) {
  const node = element as FormElement
  const value = getToStringValue(props.value)
  const type = props.type as string

  setNodeValue(node, oldValue, value, type)
}

// oldValue 为 event.detail.value，value 为 fiber.props.value
// 如果 oldValue 和 value 不相等，代表受控组件需要更新
// 更新的原则为，fiber.props.value 永远为用户所需要的值，因此 node.value = toString(value)
export function setNodeValue (node, oldValue: RestoreType, value, type = 'string') {
  if (value != null) {
    if (type === 'number') {
      if (
        (value === 0 && node.value === '')
        // We explicitly want to coerce to number here if possible.
        // eslint-disable-next-line
        || oldValue != value
      ) {
        node.value = toString(value)
      }
    } else if (oldValue !== toString(value)) {
      node.value = toString(value)
    }
  } else if (type === 'submit' || type === 'reset') {
    // Submit/reset inputs need the attribute removed completely to avoid
    // blank-text buttons.
    node.removeAttribute('value')
  }
}

// 判断当前 TaroElement 是否为 supportedInputTypes input 或 textarea
export function isTextInputElement (elem: TaroElement): boolean {
  const nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase()

  if (nodeName === 'input') {
    const type = (elem as FormElement).type

    return !type || !!supportedInputTypes[type]
  }

  if (nodeName === 'textarea') {
    return true
  }

  return false
}

export const ReactDOMTextareaRestoreControlledState = updateWrapper
export const ReactDOMInputRestoreControlledState = updateInputWrapper