/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import {
  defineComponent,
  PropType,
  h,
  VNodeChild,
  Ref,
  ref,
  onMounted,
  onUnmounted,
  nextTick
} from 'vue'
import { NTree, NInput, NDropdown } from 'naive-ui'
import { FILE_TYPES_SUFFIX } from '@/constants/file'
import { getNameByType } from '@/utils/file'
import { useLocale } from '@/hooks'
import styles from './index.module.scss'
import type { IFileRecord, TreeOption } from '@/types/file'

const props = {
  data: {
    type: Array as PropType<IFileRecord[]>,
    default: []
  },
  inputRef: {
    type: Object as PropType<Ref>
  },
  searchValueRef: {
    type: Object as PropType<Ref>
  }
}

export const Files = defineComponent({
  name: 'files',
  props,
  emits: ['select', 'inputBlur', 'delete', 'rename', 'doubleClick'],
  setup(props, { emit, expose }) {
    const keyRef = ref()
    const treeRef = ref()
    const xRef = ref(0)
    const yRef = ref(0)
    const showDropdownRef = ref(false)
    const { t } = useLocale()

    let id: any

    const onSelect = (keys: string[]) => {
      keys[0] && emit('select', keys[0])
    }
    const onBlur = (ev: FocusEvent) => {
      emit('inputBlur', (ev.target as HTMLInputElement)?.value)
    }

    const renderLabel = (info: { option: TreeOption }): VNodeChild => {
      const { isEditing, name, type, id } = info.option as IFileRecord
      return !isEditing
        ? h('div', { 'data-id': id }, type ? getNameByType(type, name) : name)
        : h(
            NInput,
            {
              size: 'tiny',
              autofocus: true,
              onBlur: onBlur,
              ref: props.inputRef
            },
            {
              suffix: () => (type ? '.' + FILE_TYPES_SUFFIX[type] : '')
            }
          )
    }

    const onContextMenu = (ev: MouseEvent) => {
      ev.preventDefault()
      id = (ev.target as HTMLElement)?.dataset.id
      if (id) {
        xRef.value = ev.clientX
        yRef.value = ev.clientY
        showDropdownRef.value = true
      }
    }

    const onContextMenuSelect = (key: 'delete' | 'rename') => {
      showDropdownRef.value = false
      emit(key, Number(id))
    }

    const onClickoutside = () => {
      showDropdownRef.value = false
    }
    const onDoubleClick = (ev: MouseEvent) => {
      id = (ev.target as HTMLElement)?.dataset.id
      if (id) emit('doubleClick', id)
    }

    const bindEvents = () => {
      treeRef.value?.selfElRef.addEventListener('contextmenu', onContextMenu)
      treeRef.value?.selfElRef.addEventListener('dblclick', onDoubleClick)
    }

    const unbindEvents = () => {
      treeRef.value?.selfElRef.removeEventListener('contextmenu', onContextMenu)
      treeRef.value?.selfElRef.removeEventListener('dblclick', onDoubleClick)
    }

    const refresh = async () => {
      keyRef.value = Date.now()
      await nextTick()
      bindEvents()
    }

    expose({ refresh })

    onMounted(() => {
      bindEvents()
    })

    onUnmounted(() => {
      unbindEvents()
    })

    return () => (
      <div>
        <NTree
          block-line
          selectable
          data={props.data}
          on-update:selected-keys={onSelect}
          class={styles['files']}
          renderLabel={renderLabel}
          key={keyRef.value}
          defaultExpandAll
          expand-on-click
          labelField='name'
          keyField='id'
          ref={treeRef}
          showIrrelevantNodes={false}
          pattern={props.searchValueRef?.value}
        ></NTree>
        <NDropdown
          placement='bottom-start'
          trigger='manual'
          x={xRef.value}
          y={yRef.value}
          options={[
            { key: 'delete', label: t('delete') },
            { key: 'rename', label: t('rename') }
          ]}
          show={showDropdownRef.value}
          onClickoutside={onClickoutside}
          onSelect={onContextMenuSelect}
        />
      </div>
    )
  }
})