<template>
  <a-spin :spinning="treeState.loading">
    <div class="ns-tree-form">
      <div v-show="header" class="ns-tree-title">
        <ns-icon :name="header.icon" size="14" />
        <span>{{ header.title }}</span>
      </div>
      <div v-show="!formConfig?.schema">
        <ns-form ref="formElRef" v-bind="formConfig" :model="formModel" @finish="formFinish" />
      </div>
    </div>

    <div style="min-height: 300px; overflow-y: scroll">
      <ns-tree v-if="treeData?.length" v-bind="getBindValue" v-model:selectedKeys="selectedKeys">
        <template #[item]="data" v-for="(item, index) in Object.keys($slots)" :key="index">
          <slot :name="item" v-bind="{ ...data, formModel } || {}"></slot>
        </template>
      </ns-tree>
      <!-- <a-empty v-if="!treeData?.length" /> -->
    </div>
  </a-spin>
</template>
<script lang="ts" setup>
  import { computed, nextTick, reactive, ref, unref, useAttrs } from 'vue';
  import { TreeDataItem } from 'ant-design-vue/es/tree/Tree';
  import { useApi } from '/nerv-lib/use/use-api';
  import { AxiosRequestConfig } from 'axios';
  import { get } from 'lodash-es';
  import { useRoute } from 'vue-router';
  import { debounce } from 'lodash-es';
  import { treeProps, treeFormProps } from '/nerv-lib/component/tree/props';

  defineOptions({
    name: 'NsTreeApi',
  });

  const formElRef = ref();
  const props = defineProps(treeProps);
  const treeData = ref<TreeDataItem[]>([]);
  const selectedKeys = ref(props.selectedKeys || []);
  const { httpRequest } = useApi();
  const requestConfig: AxiosRequestConfig = { method: 'get' };
  const route = useRoute();
  const attrs = useAttrs();
  const formModel = reactive({});
  const treeState = reactive({
    loading: false,
  });
  const formConfig = computed(() => {
    return {
      ...treeFormProps,
      ...props.formConfig,
    };
  });
  const isSticky: any = computed(() => {
    return props.isSticky ? 'sticky' : 'static';
  });
  const formFinish = debounce((data: object) => {
    getData(data);
  }, 200);
  const getBindValue = computed(() => ({
    ...attrs,
    ...props,
    treeData: treeData.value,
  }));
  const setLoading = (loading: boolean) => {
    treeState.loading = loading;
  };
  const httpPrams = computed(() => {
    return { ...route.params, ...route.query, ...props.params };
  });

  const getData = (params = {}) => {
    const { api, transform, resultField } = props;
    treeData.value = [];
    if (!api) return;
    setLoading(true);
    httpRequest({
      api,
      params: { ...httpPrams.value, ...params },
      pathParams: { ...route.params, ...route.query, ...params },
      requestConfig: { ...requestConfig, data: { ...httpPrams.value, ...params } },
    })
      .then((res) => {
        treeData.value = transform(get(res, resultField));
      })
      .finally(() => {
        setLoading(false);
      });
  };

  getData();
</script>
<style lang="less" scoped>
  @gap: 16px;
  :deep(.ant-form-item) {
    margin-bottom: @gap;
  }

  :deep(.ns-form::after) {
    display: none;
  }
  .ns-tree-form {
    position: v-bind(isSticky);
    top: 0;
    background-color: @white;
    z-index: 2;
    & ~ div {
      padding: 0 @gap !important;
    }
  }

  .ns-tree-title {
    font-weight: bold;
    user-select: text;
    padding: @gap;
    margin-bottom: @gap;
    padding-bottom: 10px;
    border-bottom: 1px solid #e9e9e9;

    > span {
      padding-left: 6px;
    }
    & ~ div {
      padding: 0 @gap !important;
      width: 100%;
    }
  }
</style>
