import { h, ref, toRef, computed, defineComponent, Transition, withDirectives } from 'vue';
import { createTreeMate } from 'treemate';
import { VBinder, VTarget, VFollower } from 'vueuc';
import { clickoutside } from 'vdirs';
import { useIsMounted, useMergedState } from 'vooks';
import { useFormItem, useTheme, useConfig } from '../../_mixins';
import { call, warn, useAdjustedTo, getFirstSlotVNode } from '../../_utils';
import { NInternalSelectMenu } from '../../_internal';
import { NInput } from '../../input';
import { autoCompleteLight } from '../styles';
import { mapAutoCompleteOptionsToSelectOptions } from './utils';
import style from './styles/index.cssr';
import { tmOptions } from '../../select/src/utils';
const autoCompleteProps = Object.assign(Object.assign({}, useTheme.props), { to: useAdjustedTo.propTo, bordered: {
        type: Boolean,
        default: undefined
    }, clearable: {
        type: Boolean,
        default: undefined
    }, defaultValue: {
        type: String,
        default: null
    }, loading: {
        type: Boolean,
        default: undefined
    }, disabled: {
        type: Boolean,
        default: undefined
    }, placeholder: String, value: String, blurAfterSelect: Boolean, clearAfterSelect: Boolean, getShow: Function, size: String, options: {
        type: Array,
        default: () => []
    }, zIndex: Number, 'onUpdate:value': [Function, Array], onUpdateValue: [Function, Array], onSelect: [Function, Array], onBlur: [Function, Array], onFocus: [Function, Array], 
    // deprecated
    onInput: {
        type: [Function, Array],
        validator: () => {
            if (process.env.NODE_ENV !== 'production') {
                warn('auto-complete', '`on-input` is deprecated, please use `on-update:value` instead.');
            }
            return true;
        },
        default: undefined
    } });
export default defineComponent({
    name: 'AutoComplete',
    props: autoCompleteProps,
    setup(props) {
        const { mergedBorderedRef, namespaceRef, mergedClsPrefixRef } = useConfig(props);
        const formItem = useFormItem(props);
        const { mergedSizeRef, mergedDisabledRef } = formItem;
        const triggerElRef = ref(null);
        const menuInstRef = ref(null);
        const uncontrolledValueRef = ref(props.defaultValue);
        const controlledValueRef = toRef(props, 'value');
        const mergedValueRef = useMergedState(controlledValueRef, uncontrolledValueRef);
        const canBeActivatedRef = ref(false);
        const isComposingRef = ref(false);
        const themeRef = useTheme('AutoComplete', 'AutoComplete', style, autoCompleteLight, props, mergedClsPrefixRef);
        const selectOptionsRef = computed(() => {
            return mapAutoCompleteOptionsToSelectOptions(props.options);
        });
        const mergedShowOptionsRef = computed(() => {
            const { getShow } = props;
            if (getShow) {
                return getShow(mergedValueRef.value || '');
            }
            return !!mergedValueRef.value;
        });
        const activeRef = computed(() => {
            return (mergedShowOptionsRef.value &&
                canBeActivatedRef.value &&
                !!selectOptionsRef.value.length);
        });
        const treeMateRef = computed(() => createTreeMate(selectOptionsRef.value, tmOptions));
        function doUpdateValue(value) {
            const { 'onUpdate:value': _onUpdateValue, onUpdateValue, onInput } = props;
            const { nTriggerFormInput, nTriggerFormChange } = formItem;
            if (onUpdateValue)
                call(onUpdateValue, value);
            if (_onUpdateValue)
                call(_onUpdateValue, value);
            if (onInput)
                call(onInput, value);
            uncontrolledValueRef.value = value;
            nTriggerFormInput();
            nTriggerFormChange();
        }
        function doSelect(value) {
            const { onSelect } = props;
            const { nTriggerFormInput, nTriggerFormChange } = formItem;
            if (onSelect)
                call(onSelect, value);
            nTriggerFormInput();
            nTriggerFormChange();
        }
        function doBlur(e) {
            const { onBlur } = props;
            const { nTriggerFormBlur } = formItem;
            if (onBlur)
                call(onBlur, e);
            nTriggerFormBlur();
        }
        function doFocus(e) {
            const { onFocus } = props;
            const { nTriggerFormFocus } = formItem;
            if (onFocus)
                call(onFocus, e);
            nTriggerFormFocus();
        }
        function handleCompositionStart() {
            isComposingRef.value = true;
        }
        function handleCompositionEnd() {
            window.setTimeout(() => {
                isComposingRef.value = false;
            }, 0);
        }
        function handleKeyDown(e) {
            var _a, _b, _c;
            switch (e.code) {
                case 'Enter':
                case 'NumpadEnter':
                    if (!isComposingRef.value) {
                        const pendingOptionTmNode = (_a = menuInstRef.value) === null || _a === void 0 ? void 0 : _a.getPendingTmNode();
                        if (pendingOptionTmNode) {
                            select(pendingOptionTmNode.rawNode);
                            e.preventDefault();
                        }
                    }
                    break;
                case 'ArrowDown':
                    (_b = menuInstRef.value) === null || _b === void 0 ? void 0 : _b.next();
                    break;
                case 'ArrowUp':
                    (_c = menuInstRef.value) === null || _c === void 0 ? void 0 : _c.prev();
                    break;
            }
        }
        function select(option) {
            if (option) {
                if (props.clearAfterSelect) {
                    doUpdateValue(null);
                }
                else {
                    doUpdateValue(option.label);
                }
                doSelect(option.value);
                canBeActivatedRef.value = false;
                if (props.blurAfterSelect) {
                    blur();
                }
            }
        }
        function handleClear() {
            doUpdateValue(null);
        }
        function handleFocus(e) {
            canBeActivatedRef.value = true;
            doFocus(e);
        }
        function handleBlur(e) {
            canBeActivatedRef.value = false;
            doBlur(e);
        }
        function handleInput(value) {
            canBeActivatedRef.value = true;
            doUpdateValue(value);
        }
        function handleToggle(option) {
            select(option.rawNode);
        }
        function handleClickOutsideMenu(e) {
            var _a;
            if (!((_a = triggerElRef.value) === null || _a === void 0 ? void 0 : _a.contains(e.target))) {
                canBeActivatedRef.value = false;
            }
        }
        function blur() {
            var _a, _b;
            if ((_a = triggerElRef.value) === null || _a === void 0 ? void 0 : _a.contains(document.activeElement)) {
                ;
                (_b = document.activeElement) === null || _b === void 0 ? void 0 : _b.blur();
            }
        }
        return {
            uncontrolledValue: uncontrolledValueRef,
            mergedValue: mergedValueRef,
            isMounted: useIsMounted(),
            adjustedTo: useAdjustedTo(props),
            menuInstRef,
            triggerElRef,
            treeMate: treeMateRef,
            mergedSize: mergedSizeRef,
            mergedDisabled: mergedDisabledRef,
            active: activeRef,
            handleClear,
            handleFocus,
            handleBlur,
            handleInput,
            handleToggle,
            handleClickOutsideMenu,
            handleCompositionStart,
            handleCompositionEnd,
            handleKeyDown,
            mergedTheme: themeRef,
            cssVars: computed(() => {
                const { common: { cubicBezierEaseInOut }, self: { menuBoxShadow } } = themeRef.value;
                return {
                    '--menu-box-shadow': menuBoxShadow,
                    '--bezier': cubicBezierEaseInOut
                };
            }),
            mergedBordered: mergedBorderedRef,
            namespace: namespaceRef,
            mergedClsPrefix: mergedClsPrefixRef
        };
    },
    render() {
        const { mergedClsPrefix } = this;
        return (h("div", { class: `${mergedClsPrefix}-auto-complete`, ref: "triggerElRef", onKeydown: this.handleKeyDown, onCompositionstart: this.handleCompositionStart, onCompositionend: this.handleCompositionEnd },
            h(VBinder, null, {
                default: () => [
                    h(VTarget, null, {
                        default: () => {
                            const defaultSlot = this.$slots.default;
                            if (defaultSlot) {
                                return getFirstSlotVNode(this.$slots, 'default', {
                                    handleInput: this.handleInput,
                                    handleFocus: this.handleFocus,
                                    handleBlur: this.handleBlur,
                                    value: this.mergedValue
                                });
                            }
                            const { mergedTheme } = this;
                            return (h(NInput, { theme: mergedTheme.peers.Input, themeOverrides: mergedTheme.peerOverrides.Input, bordered: this.mergedBordered, value: this.mergedValue, placeholder: this.placeholder, size: this.mergedSize, disabled: this.mergedDisabled, clearable: this.clearable, loading: this.loading, onClear: this.handleClear, onFocus: this.handleFocus, onUpdateValue: this.handleInput, onBlur: this.handleBlur }));
                        }
                    }),
                    h(VFollower, { show: this.active, to: this.adjustedTo, containerClass: this.namespace, zIndex: this.zIndex, teleportDisabled: this.adjustedTo === useAdjustedTo.tdkey, placement: "bottom-start", width: "target" }, {
                        default: () => (h(Transition, { name: "fade-in-scale-up-transition", appear: this.isMounted }, {
                            default: () => this.active
                                ? withDirectives(h(NInternalSelectMenu, { clsPrefix: mergedClsPrefix, ref: "menuInstRef", theme: this.mergedTheme.peers.InternalSelectMenu, themeOverrides: this.mergedTheme.peerOverrides
                                        .InternalSelectMenu, "auto-pending": true, class: `${mergedClsPrefix}-auto-complete-menu`, style: this.cssVars, treeMate: this.treeMate, multiple: false, size: "medium", onToggle: this.handleToggle }), [[clickoutside, this.handleClickOutsideMenu]])
                                : null
                        }))
                    })
                ]
            })));
    }
});
