<template>
    <div class="app-mpicker-importability">
        <div>
            <el-select
                :value="curValue"
                allow-create
                multiple
                filterable
                remote
                :remote-method="onSearch"
                size="small"
                @change="onSelect"
                @remove-tag="onRemove"
                :disabled="disabled || readonly"
            >
                <el-option
                    v-for="(item, index) in items"
                    :key="index"
                    :label="item[deMajorField]"
                    :value="item[deKeyField]"
                ></el-option>
            </el-select>
            <span class="app-mpicker-importability__open-icon">
                <i class="el-icon-search" @click="openView"></i>
            </span>
        </div>
    </div>
</template>
<script lang = 'ts'>
import { Component, Vue, Prop, Watch } from 'vue-property-decorator';
import { Subject, Subscription } from 'rxjs';
import { Util } from 'ibiz-core';

@Component({})
export default class AppMpickerImportability extends Vue {

    /**
     * 表单数据
     */
    @Prop() data?: any;

    /**
     * 是否禁用
     */
    @Prop() disabled?: boolean;

    /**
     * 只读模式
     *
     * @type {boolean}
     */
    @Prop({ default: false }) public readonly?: boolean;

    /**
     * 表单项值
     */
    @Prop() value?: any;

    /**
     * 值项
     */
    @Prop() valueitem?: any;

    /**
     * 局部上下文导航参数
     *
     * @type {any}
     * @memberof AppMpicker
     */
    @Prop() public localContext!: any;

    /**
     * 局部导航参数
     *
     * @type {any}
     * @memberof AppMpicker
     */
    @Prop() public localParam!: any;

    /**
     * 表单项名称
     */
    @Prop() name: any;

    /**
     * 视图上下文
     *
     * @type {*}
     * @memberof AppMpicker
     */
    @Prop() public context!: any;

    /**
     * 视图参数
     *
     * @type {*}
     * @memberof AppMpicker
     */
    @Prop() public viewparams!: any;

    /**
     * 应用实体主信息属性名称
     *
     * @type {string}
     * @memberof AppMpicker
     */
    @Prop({ default: 'srfmajortext' }) public deMajorField!: string;

    /**
     * 应用实体主键属性名称
     *
     * @type {string}
     * @memberof AppMpicker
     */
    @Prop({ default: 'srfkey' }) public deKeyField!: string;

    /**
     * 打开对应的选择视图
     */
    @Prop() pickupView?: any;

    /**
     * 当前表单项绑定值key的集合
     */
    public curValue: any = [];

    /**
     * 所有操作过的下拉选选项
     */
    public items: Array<any> = [];

    /**
     * 选中项key-value键值对
     *
     */
    public selectItems: Array<any> = [];

    /**
     * 状态事件
     *
     * @public
     * @type {(Subscription | undefined)}
     * @memberof ActionlinetestBase
     */
    public viewStateEvent: Subscription | undefined;

    /**
     * 监听curvalue值
     * @param newVal
     * @param val
     */
    @Watch('value', { immediate: true, deep: true })
    oncurvalueChange(newVal: any, val: any) {
        this.curValue = [];
        this.selectItems = [];
        if (newVal) {
            try {
                this.selectItems = this.parseValue(JSON.parse(newVal));
                this.selectItems.forEach((item: any) => {
                    this.curValue.push(item[this.deKeyField]);
                    let index = this.items.findIndex(i => Object.is(i[this.deKeyField], item[this.deKeyField]));
                    if (index < 0) {
                        this.items.push({
                            [this.deMajorField]: item[this.deMajorField],
                            [this.deKeyField]: item[this.deKeyField],
                        });
                    }
                });
            } catch (error) {
                if (error.name === 'SyntaxError') {
                    let srfkeys: any = newVal.split(',');
                    let srfmajortexts: any = null;
                    if (this.valueitem && this.data[this.valueitem]) {
                        srfmajortexts = this.data[this.valueitem].split(',');
                    }
                    if (
                        srfkeys.length &&
                        srfkeys.length > 0 &&
                        srfmajortexts.length &&
                        srfmajortexts.length > 0 &&
                        srfkeys.length == srfmajortexts.length
                    ) {
                        srfkeys.forEach((id: any, index: number) => {
                            this.curValue.push(id);
                            this.selectItems.push({ [this.deKeyField]: id, [this.deMajorField]: srfmajortexts[index] });
                            let _index = this.items.findIndex(i => Object.is(i[this.deKeyField], id));
                            if (_index < 0) {
                                this.items.push({ [this.deKeyField]: id, [this.deMajorField]: srfmajortexts[index] });
                            }
                        });
                    }
                }
            }
        }
        this.$forceUpdate();
    }

    /**
     * 远程执行搜索
     *
     * @param {*} query
     * @memberof AppMpicker
     */
    public onSearch(query: any) {
        if (query) {
            this.items.push({ [this.deKeyField]: query, [this.deMajorField]: query });
        }
    }

    /**
     * 下拉选中回调
     *
     * @param {*} selects
     * @memberof AppMpicker
     */
    public onSelect(selects: any) {
        let val: Array<any> = [];
        selects.forEach((select: any) => {
            let index = this.items.findIndex(item => Object.is(item[this.deKeyField], select));
            if (index >= 0) {
                let item = this.items[index];
                val.push({
                    [this.deKeyField]: item[this.deKeyField],
                    [this.deMajorField]: item[this.deMajorField],
                });
            } else {
                index = this.selectItems.findIndex((item: any) => Object.is(item[this.deKeyField], select));
                if (index >= 0) {
                    let item = this.selectItems[index];
                    val.push(item);
                }
            }
        });
        let value = val.length > 0 ? JSON.stringify(this.formatValue(val)) : '';
        this.$emit('formitemvaluechange', { name: this.name, value: value });
    }

    /**
     * 移除标签回调
     *
     * @param {*} tag
     * @memberof AppMpicker
     */
    public onRemove(tag: any) {
        let index = this.selectItems.findIndex((item: any) => Object.is(item[this.deKeyField], tag));
        if (index >= 0) {
            this.selectItems.splice(index, 1);
            let value = this.selectItems.length > 0 ? JSON.stringify(this.formatValue(this.selectItems)) : '';
            this.$emit('formitemvaluechange', { name: this.name, value: value });
        }
    }

    /**
     * 公共参数处理
     *
     * @param {*} arg
     * @returns
     * @memberof AppMpicker
     */
    public handlePublicParams(arg: any): boolean {
        if (!this.data) {
            this.$throw(this.$t('components.AppMpicker.formdataException') as any, 'handlePublicParams');
            return false;
        }
        // 合并表单参数
        arg.param = this.viewparams ? Util.deepCopy(this.viewparams) : {};
        arg.context = this.context ? Util.deepCopy(this.context) : {};
        // 附加参数处理
        if (this.localContext && Object.keys(this.localContext).length > 0) {
            let _context = Util.computedNavData(this.data, arg.context, arg.param, this.localContext);
            Object.assign(arg.context, _context);
        }
        if (this.localParam && Object.keys(this.localParam).length > 0) {
            let _param = Util.computedNavData(this.data, arg.param, arg.param, this.localParam);
            Object.assign(arg.param, _param);
        }
        return true;
    }

    /**
     * 打开视图
     *
     * @returns
     * @memberof AppMpicker
     */
    public openView() {
        if (this.disabled) {
            return;
        }
        if (this.pickupView && Object.keys(this.pickupView).length > 0) {
            // 参数处理
            const view = { ...this.pickupView };
            // 公共参数处理
            let data: any = {};
            const bcancel: boolean = this.handlePublicParams(data);
            if (!bcancel) {
                return;
            }
            // 参数处理
            let _context = data.context;
            let _viewparams = data.param;
            let _selectItems = JSON.parse(JSON.stringify(this.selectItems));
            if (!Object.is(this.deKeyField, 'srfkey')) {
                _selectItems.forEach((item: any, index: number) => {
                    _selectItems[index].srfkey = item[this.deKeyField];
                });
            }
            if (!Object.is(this.deMajorField, 'srfmajortext')) {
                _selectItems.forEach((item: any, index: number) => {
                    _selectItems[index].srfmajortext = item[this.deMajorField];
                });
            }
            _context = Object.assign(_context, { srfparentdata: { srfparentkey: this.data[this.deKeyField] } });
            _viewparams = Object.assign(_viewparams, { selectedData: [..._selectItems] });
            if (view && view.viewpath) {
                _context.viewpath = view.viewpath;
            }
            let formdata = this.data;
            const modal: Subject<any> = this.$appmodal.openModal(view, _context, _viewparams);
            this.viewStateEvent = modal.subscribe((result: any) => {
                if (!result || !Object.is(result.ret, 'OK')) {
                    return;
                }
                let selects: Array<any> = [];
                if (result.datas && Array.isArray(result.datas)) {
                    result.datas.forEach((select: any) => {
                        selects.push({
                            [this.deKeyField]: select[this.deKeyField],
                            [this.deMajorField]: select[this.deMajorField],
                        });
                        let index = this.items.findIndex(item =>
                            Object.is(item[this.deKeyField], select[this.deKeyField]),
                        );
                        if (index < 0) {
                            this.items.push({
                                [this.deMajorField]: select[this.deMajorField],
                                [this.deKeyField]: select[this.deKeyField],
                            });
                        }
                    });
                    if (this.selectItems && this.selectItems.length > 0) {
                        this.selectItems.forEach((item: any) => {
                            selects.push(item);
                        });
                    }
                }
                if (this.name && this.data) {
                    let value = selects.length > 0 ? JSON.stringify(this.formatValue(selects)) : '';
                    this.$emit('formitemvaluechange', { name: this.name, value: value });
                }
            });
        }
    }

    /**
     * 解析值,把srfkey和srfmajortext解析成实体属性名
     *
     * @param {any[]} value 需要转换的数组
     * @memberof AppMpicker
     */
    public parseValue(value: any[]) {
        let result = [];
        if (this.deKeyField !== 'srfkey' || this.deMajorField !== 'srfmajortext') {
            value.forEach((item: any) => {
                result.push({ [this.deMajorField]: item.srfmajortext, [this.deKeyField]: item.srfkey });
            });
        } else {
            result = value;
        }
        return result;
    }

    /**
     * 格式化值，把实体属性名格式化成srfkey和srfmajortext
     *
     * @param {any[]} value 需要转换的数组
     * @memberof AppMpicker
     */
    public formatValue(value: any[]) {
        let result = [];
        if (this.deKeyField !== 'srfkey' || this.deMajorField !== 'srfmajortext') {
            value.forEach((item: any) => {
                result.push({ srfmajortext: item[this.deMajorField], srfkey: item[this.deKeyField] });
            });
        } else {
            result = value;
        }
        return result;
    }

    /**
     * @description: 组件销毁
     * 
     * @return {*}
     */    
    public destroyed(){
        if(this.viewStateEvent){
            this.viewStateEvent.unsubscribe();
        }
    }
}
</script>