Shows: add pagination to findAll

src/shows/shows.controller.ts

@@ -13,6 +13,7 @@ import {
 } from '@nestjs/common';
 import { ShowsService } from './shows.service';
 import { ShowDto } from './dto/show.dto';
+import { PaginationDto } from 'src/pagination.dto';
 
 @Controller('shows')
 export class ShowsController {
@@ -36,10 +37,15 @@ export class ShowsController {
   }
 
   @Get()
-  async findAll() {
+  async findAll(@Query() pagination: PaginationDto) {
     try {
-      const shows = await this.showsService.findAll();
-      return { status: 'Ok', shows, totalShows: shows.length };
+      const { page, limit } = pagination;
+      const serviceResponse = await this.showsService.findAll(page, limit);
+      return {
+        status: 'Ok',
+        shows: serviceResponse.shows,
+        showCount: serviceResponse.showCount,
+      };
     } catch (error) {
       throw new InternalServerErrorException({
         status: error.name,

src/shows/shows.service.ts

@@ -13,8 +13,22 @@ export class ShowsService {
     return show.save();
   }
 
-  async findAll(): Promise<Show[]> {
-    return this.showModel.find();
+  async findAll(page: number, showsPerPage: number): Promise<any> {
+    // Default value is 1 and I can't think any reason why you would want
+    // a single item per page, so if showsPerPage is 1 then just don't do
+    // any pagination at all
+    let shows;
+    if (showsPerPage != 1) {
+      const skip = (page - 1) * showsPerPage;
+      shows = await this.showModel.find().skip(skip).limit(showsPerPage);
+    } else {
+      shows = await this.showModel.find();
+    }
+    const total = await this.showModel.countDocuments();
+    return {
+      shows: shows,
+      showCount: total,
+    };
   }
 
   async findId(id: string): Promise<any> {