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import { DynamicFilterOperations, DynamicFilterRelations, IDynamicFilterItem, ITekRestDatasource } from './interfaces';
export class TekRestDatasource extends RestDatasource implements ITekRestDatasource {
/** Dynamic filter data */
public dynamicFilter!: IDictionary<IDynamicFilterItem[]>;
/** Search Join data */
public searchJoin!: IDictionary<Array<string | number>>;
/**
* Dynamic Filter Operations
*/
public dynamicFilterOperations = DynamicFilterOperations;
/**
* Dynamic Filter Relations
*/
public dynamicFilterRelations = DynamicFilterRelations;
/**
* Dynamic Filter applied flag
*/
protected dynamicFilterApplied = '';
/**
* Create new datasource
* @param props Datasource properties
*/
constructor(props: ITekRestDatasource) {
super({ ...props, lazyLoad: true });
if (!this.watchUrl) {
this.dynamicFilter = this.getInitValue('dynamicFilter', props.dynamicFilter, {});
this.searchJoin = this.getInitValue('searchJoin', props.searchJoin, {});
}
this.lazyLoad = this.getInitValue('lazyLoad', props.lazyLoad, this.lazyLoad);
this.createAccessors();
this.createObjAccessors(this.dynamicFilter, 'dynamicFilter');
this.createObjAccessors(this.searchJoin, 'searchJoin');
}
protected updateReservedKeys() {
this.reservedKeys.dynamic_filter = true;
this.reservedKeys.search_join = true;
}
protected updateInternalProperties(datasource: IDatasource = {}) {
if (!this.watchUrl) return;
this.updateReservedKeys();
super.updateInternalProperties(datasource);
const queryString = URL.getParsedQueryStringFromUrl();
this.dynamicFilter = this.getEncodedParam(queryString.dynamic_filter, datasource.dynamicFilter);
this.searchJoin = this.getEncodedParam(queryString.search_join, datasource.searchJoin);
}
protected getEncodedParam(urlParam: string, datasourceParam: IDictionary<any> = {}): IDictionary<any> {
return urlParam ? JSON.parse(atob(urlParam)) : datasourceParam;
}
protected getQueryStringValues(): IDictionary<any> {
const values = super.getQueryStringValues();
if (this.dynamicFilter && Object.keys(this.dynamicFilter).length) {
values.dynamic_filter = btoa(JSON.stringify(this.dynamicFilter));
}
if (this.searchJoin && Object.keys(this.searchJoin).length) {
values.search_join = btoa(JSON.stringify(this.searchJoin));
}
return values;
}
protected getUrlQueryString() {
const superQueryString = super.getUrlQueryString();
const query = URL.getParsedQueryStringFromUrl();
let dynamicFilterQuerystring = '';
if (query.dynamic_filter) {
dynamicFilterQuerystring = `&${URL.getFormattedQueryString({
dynamic_filter: query.dynamic_filter,
})}`;
}
let searchJoinQuerystring = '';
if (query.search_join) {
searchJoinQuerystring = `&${URL.getFormattedQueryString({
search_join: query.search_join,
})}`;
}
return superQueryString + dynamicFilterQuerystring + searchJoinQuerystring;
}
/**
* Adds a new dynamic filter position or replace if exists
* @param column Dynamic Filter column name
* @param value Dynamic Filter value
* @returns Promise with data collection
*/
public addDynamicFilter(column: string, value: any) {
if (this.isValidDynamicFilterValue(column, value)) {
this.dynamicFilter[column] = value;
return this.updateDynamicFilter();
}
return this.removeDynamicFilter(column);
}
/**
* Removes a dynamic filter position
* @param column Dynamic Filter column name
* @returns Promise with data collection
*/
public removeDynamicFilter(column: string) {
delete this.dynamicFilter[column];
return this.updateDynamicFilter();
}
/**
* Sets new dynamic filter value
* @param filter Dynamic Filter value
* @returns Promise with data collection
*/
public setDynamicFilter(filter: IDictionary<any>) {
this.dynamicFilter = {};
Object.keys(filter).forEach((column: string) => {
if (this.isValidDynamicFilterValue(column, filter[column])) {
this.dynamicFilter[column] = filter[column];
} else {
delete this.dynamicFilter[column];
}
});
return this.updateDynamicFilter();
}
/**
* Clears Dynamic filter value
* @returns Promise with data collection
*/
public clearDynamicFilter() {
this.dynamicFilter = {};
return this.updateDynamicFilter();
}
/**
* Resets page and selected rows and tries to update the url
* @returns Promise with data collection
*/
public async updateDynamicFilter() {
this.page = this.firstPage;
this.selectedRows = [];
this.visibleSelectedRows = [];
if (this.watchUrl) {
if (this.dynamicFilter && Object.keys(this.dynamicFilter).length) {
URL.updateQueryString({
dynamic_filter: btoa(JSON.stringify(this.dynamicFilter)),
});
} else {
URL.updateQueryString({
dynamic_filter: undefined,
});
}
}
return this.get();
}
/**
* Checks if a filter value is valid
* @param value Filter value
* @returns Is valid filter value
*/
protected isValidDynamicFilterValue(column: string, value?: IDictionary<any>[]) {
return (
!this.reservedKeys[column] &&
value &&
value.length > 0 &&
value.every(
(filterValue) =>
this.dynamicFilterOperations[filterValue.operation] &&
this.dynamicFilterRelations[filterValue.relation] &&
filterValue.value !== '' &&
filterValue.value !== null,
)
);
}
/**
* Retrieves request params
*/
protected getRequestParams(): any {
const requestParams = super.getRequestParams();
const isNotEmptyObj = (obj?: IDictionary) => !!(obj && Object.keys(obj).length);
const isValid =
this.dynamicFilter &&
Object.keys(this.dynamicFilter).every((column) => {
const value = this.dynamicFilter[column];
return value && value.length > 0 && this.isValidDynamicFilterValue(column, value);
});
if (isNotEmptyObj(this.dynamicFilter) && isValid) {
requestParams.dynamic_filter = btoa(JSON.stringify(this.dynamicFilter));
}
if (isNotEmptyObj(this.searchJoin)) {
requestParams.search_join = btoa(JSON.stringify(this.searchJoin));
}
return requestParams;
}
public hasFilter(columnName: string): boolean {
return this.dynamicFilter[columnName] && this.dynamicFilter[columnName].length > 0;
}
public clone() {
return {
...super.clone(),
dynamicFilter: this.dynamicFilter,
searchJoin: this.searchJoin,
type: 'tek-rest',
};
}
}
DatasourceFactory.register('tek-rest', TekRestDatasource);
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