<template>
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<Select
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@dropdown-visible-change="handleFetch"
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v-bind="$attrs"
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@change="handleChange"
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@search="debounceSearchFn"
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:options="getOptions"
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v-model:value="state"
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>
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<template #[item]="data" v-for="item in Object.keys($slots)">
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<slot :name="item" v-bind="data || {}"></slot>
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</template>
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<template #suffixIcon v-if="loading">
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<LoadingOutlined spin />
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</template>
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<template #notFoundContent v-if="loading">
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<span>
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<LoadingOutlined spin class="mr-1" />
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{{ t('component.form.apiSelectNotFound') }}
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</span>
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</template>
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</Select>
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</template>
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<script lang="ts" setup>
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import { computed, PropType, ref, unref, watch } from 'vue';
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import { Select } from 'ant-design-vue';
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import type { SelectValue } from 'ant-design-vue/es/select';
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import { isEmpty, isFunction } from '@/utils/is';
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import { useRuleFormItem } from '@/hooks/component/useFormItem';
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import { assignIn, get, isEqual, omit } from 'lodash-es';
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import { LoadingOutlined } from '@ant-design/icons-vue';
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import { useI18n } from '@/hooks/web/useI18n';
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import { propTypes } from '@/utils/propTypes';
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import { useDebounceFn } from '@vueuse/core';
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type OptionsItem = { label?: string; value?: string; disabled?: boolean; [name: string]: any };
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type ApiSearchOption = {
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// 待搜索字段名
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searchName?: string;
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// 搜索前置方法
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beforeFetch?: (value?: string) => Promise<string>;
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// 拦截方法
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interceptFetch?: (value?: string) => Promise<boolean>;
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};
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defineOptions({ name: 'ApiSelect', inheritAttrs: false });
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const props = defineProps({
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value: { type: [Array, Object, String, Number] as PropType<SelectValue> },
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numberToString: propTypes.bool,
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api: {
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type: Function as PropType<(arg?: any) => Promise<OptionsItem[] | Recordable>>,
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default: null,
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},
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// api params
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params: propTypes.any.def({}),
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// support xxx.xxx.xx
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resultField: propTypes.string.def(''),
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labelField: propTypes.string.def('label'),
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valueField: propTypes.string.def('value'),
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immediate: propTypes.bool.def(true),
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alwaysLoad: propTypes.bool.def(false),
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options: {
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type: Array<OptionsItem>,
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default: [],
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},
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apiSearch: {
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type: Object as PropType<ApiSearchOption>,
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default: () => null,
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},
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beforeFetch: {
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type: Function as PropType<Fn>,
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default: null,
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},
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afterFetch: {
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type: Function as PropType<Fn>,
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default: null,
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},
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});
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const emit = defineEmits(['options-change', 'change', 'update:value']);
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const optionsRef = ref<OptionsItem[]>([]);
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const loading = ref(false);
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// 首次是否加载过了
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const isFirstLoaded = ref(false);
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const emitData = ref<OptionsItem[]>([]);
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const searchParams = ref<any>({});
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const { t } = useI18n();
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// Embedded in the form, just use the hook binding to perform form verification
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const [state] = useRuleFormItem(props, 'value', 'change', emitData);
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const getOptions = computed(() => {
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const { labelField, valueField, numberToString } = props;
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let data = unref(optionsRef).reduce((prev, next: any) => {
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if (next) {
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const value = get(next, valueField);
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prev.push({
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...omit(next, [labelField, valueField]),
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label: get(next, labelField),
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value: numberToString ? `${value}` : value,
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});
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}
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return prev;
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}, [] as OptionsItem[]);
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return data.length > 0 ? data : props.options;
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});
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watch(
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() => state.value,
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(v) => {
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emit('update:value', v);
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},
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);
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watch(
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() => props.params,
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(value, oldValue) => {
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if (isEqual(value, oldValue)) return;
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fetch();
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},
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{ deep: true, immediate: props.immediate },
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);
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watch(
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() => searchParams.value,
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(value, oldValue) => {
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if (isEmpty(value) || isEqual(value, oldValue)) return;
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(async () => {
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await fetch();
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searchParams.value = {};
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})();
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},
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{ deep: true, immediate: props.immediate },
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);
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async function fetch() {
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let { api, beforeFetch, afterFetch, params, resultField } = props;
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if (!api || !isFunction(api) || loading.value) return;
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optionsRef.value = [];
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try {
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loading.value = true;
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let apiParams = assignIn({}, params, searchParams.value);
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if (beforeFetch && isFunction(beforeFetch)) {
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apiParams = (await beforeFetch(apiParams)) || apiParams;
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}
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let res = await api(apiParams);
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if (afterFetch && isFunction(afterFetch)) {
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res = (await afterFetch(res)) || res;
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}
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isFirstLoaded.value = true;
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if (Array.isArray(res)) {
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optionsRef.value = res;
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emitChange();
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return;
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}
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if (resultField) {
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optionsRef.value = get(res, resultField) || [];
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}
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emitChange();
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} catch (error) {
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console.warn(error);
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// reset status
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isFirstLoaded.value = false;
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} finally {
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loading.value = false;
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}
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}
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async function handleFetch(visible: boolean) {
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if (visible) {
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if (props.alwaysLoad) {
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await fetch();
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} else if (!props.immediate && !unref(isFirstLoaded)) {
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await fetch();
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}
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}
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}
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let debounceSearchFn = useDebounceFn(handleSearch, 500);
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async function handleSearch(value: any) {
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if (!props.apiSearch) {
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return;
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}
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const { searchName, beforeFetch, interceptFetch } = props.apiSearch;
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if (!searchName) {
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return;
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}
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value = value || undefined;
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if (beforeFetch && isFunction(beforeFetch)) {
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value = (await beforeFetch(value)) || value;
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}
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if (interceptFetch && isFunction(interceptFetch)) {
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if (!(await interceptFetch(value))) {
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return;
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}
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}
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searchParams.value = {
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[searchName]: value,
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};
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}
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function emitChange() {
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emit('options-change', unref(getOptions));
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}
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function handleChange(_, ...args) {
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emitData.value = args;
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}
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</script>
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