/**
 * Copyright (c) 2022 - present TinyVue Authors.
 * Copyright (c) 2022 - present Huawei Cloud Computing Technologies Co., Ltd.
 *
 * Use of this source code is governed by an MIT-style license.
 *
 * THE OPEN SOURCE SOFTWARE IN THIS PRODUCT IS DISTRIBUTED IN THE HOPE THAT IT WILL BE USEFUL,
 * BUT WITHOUT ANY WARRANTY, WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR
 * A PARTICULAR PURPOSE. SEE THE APPLICABLE LICENSES FOR MORE DETAILS.
 *
 */

import type { ICheckboxRenderlessParams, ICheckboxState, ICheckboxChangeEvent, ICheckboxProps } from '@/types'
import { isNull } from '@opentiny/utils'

export const addToStore =
  ({ state, props }: Pick<ICheckboxRenderlessParams, 'state' | 'props'>) =>
  (): void => {
    if (Array.isArray(state.model) && !state.model.includes(props.label)) {
      state.model.push(props.label)
    } else {
      state.model = props.trueLabel || true
    }
  }

export const removeFromStore =
  ({ state, props }: Pick<ICheckboxRenderlessParams, 'state' | 'props'>) =>
  (): void => {
    if (Array.isArray(state.model)) {
      const index = state.model.indexOf(props.label)
      index !== -1 && state.model.splice(index, 1)
    } else {
      state.model = props.falseLabel !== undefined && props.falseLabel
    }
  }

export const handleChange =
  ({
    state,
    props,
    emit,
    nextTick,
    dispatch,
    constants
  }: Pick<ICheckboxRenderlessParams, 'state' | 'props' | 'emit' | 'nextTick' | 'dispatch' | 'constants'>) =>
  (event: ICheckboxChangeEvent): void => {
    if (state.isLimitExceeded) {
      return
    }

    let moduleValue
    const { trueLabel, falseLabel } = props

    if (event.target.checked) {
      moduleValue = trueLabel === undefined ? true : trueLabel
    } else {
      moduleValue = falseLabel === undefined ? false : falseLabel
    }

    emit('change', moduleValue, event)

    nextTick(() => {
      state.isGroup && dispatch(constants.CHECKBOX_GROUP, 'change', [state.checkboxGroup.modelValue])
    })
  }

// prettier-ignore
export const computedGetModelGet = ({ state, props }: Pick<ICheckboxRenderlessParams, 'state' | 'props'>) => (): ICheckboxState['model'] => {
  const model = state.isGroup
    ? state.store
    : props.modelValue !== undefined
      ? props.modelValue
      : state.selfModel

  return isNull(model) ? state.isGroup ? [] : '' : model
}

export const computedGetModelSet =
  ({
    state,
    dispatch,
    emit,
    constants
  }: Pick<ICheckboxRenderlessParams, 'state' | 'dispatch' | 'emit' | 'constants'>) =>
  (value: ICheckboxState['model']): void => {
    if (state.isGroup) {
      state.isLimitExceeded = false

      state.checkboxGroup.min !== undefined && value.length < state.checkboxGroup.min && (state.isLimitExceeded = true)

      state.checkboxGroup.max !== undefined && value.length > state.checkboxGroup.max && (state.isLimitExceeded = true)

      state.isLimitExceeded === false && dispatch(constants.CHECKBOX_GROUP, 'update:modelValue', [value])
    } else {
      emit('update:modelValue', value)
      state.selfModel = value
    }
  }

export const computedIsChecked =
  ({ state, props }: Pick<ICheckboxRenderlessParams, 'state' | 'props'>) =>
  (): boolean => {
    if (typeof state.model === 'boolean') {
      return state.model
    } else if (Array.isArray(state.model)) {
      return state.model.includes(props.label)
    } else if (!isNull(state.model)) {
      return state.model === props.trueLabel
    }
    return false
  }

export const computedIsGroup =
  ({ state, parent, constants }: Pick<ICheckboxRenderlessParams, 'state' | 'parent' | 'constants'>) =>
  (): boolean => {
    let parentObj = parent.$parent

    while (parentObj) {
      if (parentObj.$options.componentName !== constants.CHECKBOX_GROUP) {
        parentObj = parentObj.$parent
      } else {
        state.checkboxGroup = parentObj
        return true
      }
    }

    return false
  }

export const computedStore =
  ({ state, props }: Pick<ICheckboxRenderlessParams, 'state' | 'props'>) =>
  (): ICheckboxState['store'] =>
    state.checkboxGroup ? state.checkboxGroup.modelValue : props.modelValue

export const computedIsLimitDisabled = (state) => () => {
  const { max, min } = state.checkboxGroup

  return (
    (!!(max || min) && state.model.length >= max && !state.isChecked) || (state.model.length <= min && state.isChecked)
  )
}

export const computedIsDisabled =
  ({ state, props }: Pick<ICheckboxRenderlessParams, 'state' | 'props'>) =>
  (): boolean =>
    (state.isGroup
      ? state.checkboxGroup.disabled ||
        state.checkboxGroup.displayOnly ||
        props.disabled ||
        props.displayOnly ||
        state.isLimitDisabled
      : props.disabled) || state.formDisabled

export const computedFormItemSize = (props) => (): string => (props.formItem || {}).formItemSize

export const computedCheckboxSize =
  ({ state, props, formItemSize }: Pick<ICheckboxRenderlessParams, 'state' | 'props' | 'formItemSize'>) =>
  () => {
    const tempCheckboxSize = props.size || formItemSize.value

    return state.isGroup ? state.checkboxGroup.state.checkboxGroupSize || tempCheckboxSize : tempCheckboxSize
  }

export const mounted =
  ({ props, emit, api, parent }: Pick<ICheckboxRenderlessParams, 'props' | 'emit' | 'api' | 'parent'>) =>
  (): void => {
    props.checked && api.addToStore()

    props.indeterminate && parent.$el.setAttribute('aria-controls', props.controls)

    emit('complete', true)
  }

export const toggleEvent = ({
  parent,
  props,
  type
}: Pick<ICheckboxRenderlessParams, 'parent' | 'props' | 'type'>): void => {
  const inputEl = parent.$el

  for (let ev in props.events) {
    inputEl[type + 'EventListener'](ev, props.events[ev])
  }
}

export const computedIsDisplayOnly =
  ({ state, props }: Pick<ICheckboxRenderlessParams, 'state' | 'props'>) =>
  (): boolean =>
    props.displayOnly || state.formDisplayOnly

export const computedIsGroupDisplayOnly =
  ({ state }: Pick<ICheckboxRenderlessParams, 'state'>) =>
  (): boolean =>
    state.isGroup && (state.checkboxGroup.displayOnly || state.formDisplayOnly)

// 多端模板下，计算displayLabel的值。  pc模板没有用到
export const computedDisplayLabel =
  ({ state, props, t }: Pick<ICheckboxRenderlessParams, 'state' | 'props' | 't'>) =>
  (): string => {
    state.showLabel = true
    if (props.trueLabel !== undefined && props.falseLabel !== undefined) {
      // 当需要显示 trueLabel 或 falseLabel 时， 根据示例推测， modelValue应该是其中一个值，而不能是一个boolean值
      return props.modelValue
    } else {
      return props.modelValue ? t('yes') : t('no')
    }
  }

export const computedIsShowText =
  ({ props }: Pick<ICheckboxRenderlessParams, 'props'>) =>
  (): boolean =>
    !isNull(props.text) || !isNull(props.label)

export const computedShowText =
  ({ props }: Pick<ICheckboxRenderlessParams, 'props'>) =>
  (): ICheckboxProps['label'] | ICheckboxProps['text'] => {
    if (props.text || !isNull(props.text)) {
      return props.text
    } else {
      return props.label
    }
  }