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Fixed order-change

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This commit is contained in:
danny-mhlv 2022-09-22 13:31:22 +03:00
parent d996bf679d
commit f4f01fe8c0
1 changed files with 9 additions and 10 deletions
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19
src/core/interceptors/page.interceptor.ts
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@ -1,6 +1,6 @@
import { HttpService } from "@nestjs/axios";
import { CACHE_MANAGER, CallHandler, ExecutionContext, Inject, Injectable, NestInterceptor } from "@nestjs/common";
import { Observable, map, take, switchMap } from "rxjs";
import { Observable, map, take, switchMap, of } from "rxjs";
import { PageDto } from "../domain/dtos";
import { EsQueryDto } from "../domain/dtos/elastic/es-query.dto";
import { RequestDto } from "../domain/dtos/request.dto";
@ -50,6 +50,11 @@ export class PageInterceptor implements NestInterceptor {
const limit = !query.limit ? 10 : query.limit;
const order = !query.order ? Order.DESC : query.order;
const prev_page = await this.cacheManager.get('prev_page');
if (prev_page) {
if (offset == prev_page[1] && limit == prev_page[2] && order == prev_page[3]) return of(prev_page[0]);
}
// Contruct a body for querying Elasticsearch
request.es_query = new EsQueryDto();
request.es_query.query = {
@ -60,14 +65,6 @@ export class PageInterceptor implements NestInterceptor {
};
request.es_query.from = offset;
request.es_query.size = limit;
request.es_query.sort = [
{ "_score": { "order": order } },
];
const prev_page = await this.cacheManager.get('prev_page');
if (prev_page) {
if (offset == prev_page[1] && limit == prev_page[2]) return prev_page[0];
}
return next.handle().pipe(
switchMap(async (res) => {
@ -81,10 +78,12 @@ export class PageInterceptor implements NestInterceptor {
let data = res.hits.hits;
// Omitting the redundant info and leaving only the document
data = data.map((el) => el._source);
// Change the order if set
if (order == Order.ASC) data.reverse();
// Cache and return the page
const page: PageDto = new PageDto(data, meta);
await this.cacheManager.set('prev_page', [page, offset, limit]);
await this.cacheManager.set('prev_page', [page, offset, limit, order]);
return page;
})
);