Implemented load new image when navigating back from backup page (#9)

server/src/api-v1/asset/asset.controller.ts

@@ -29,6 +29,7 @@ import { Response as Res } from 'express';
 import { promisify } from 'util';
 import { stat } from 'fs';
 import { pipeline } from 'stream';
+import { GetNewAssetQueryDto } from './dto/get-new-asset-query.dto';
 
 const fileInfo = promisify(stat);
 
@@ -141,6 +142,11 @@ export class AssetController {
     console.log('SHOULD NOT BE HERE');
   }
 
+  @Get('/new')
+  async getNewAssets(@GetAuthUser() authUser: AuthUserDto, @Query(ValidationPipe) query: GetNewAssetQueryDto) {
+    return await this.assetService.getNewAssets(authUser, query.latestDate);
+  }
+
   @Get('/all')
   async getAllAssets(@GetAuthUser() authUser: AuthUserDto, @Query(ValidationPipe) query: GetAllAssetQueryDto) {
     return await this.assetService.getAllAssets(authUser, query);

server/src/api-v1/asset/asset.service.ts

@@ -1,6 +1,6 @@
 import { BadRequestException, Injectable, Logger } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
-import { Repository } from 'typeorm';
+import { MoreThan, Repository } from 'typeorm';
 import { AuthUserDto } from '../../decorators/auth-user.decorator';
 import { CreateAssetDto } from './dto/create-asset.dto';
 import { UpdateAssetDto } from './dto/update-asset.dto';
@@ -8,6 +8,7 @@ import { AssetEntity, AssetType } from './entities/asset.entity';
 import _ from 'lodash';
 import { GetAllAssetQueryDto } from './dto/get-all-asset-query.dto';
 import { GetAllAssetReponseDto } from './dto/get-all-asset-response.dto';
+import { Greater } from '@tensorflow/tfjs-core';
 
 @Injectable()
 export class AssetService {
@@ -53,8 +54,6 @@ export class AssetService {
   }
 
   public async getAllAssets(authUser: AuthUserDto, query: GetAllAssetQueryDto): Promise<GetAllAssetReponseDto> {
-    // Each page will take 100 images.
-
     try {
       const assets = await this.assetRepository
         .createQueryBuilder('a')
@@ -63,7 +62,7 @@ export class AssetService {
           lastQueryCreatedAt: query.nextPageKey || new Date().toISOString(),
         })
         .orderBy('a."createdAt"::date', 'DESC')
-        // .take(500)
+        .take(5000)
         .getMany();
 
       if (assets.length > 0) {
@@ -102,4 +101,16 @@ export class AssetService {
 
     return rows[0] as AssetEntity;
   }
+
+  public async getNewAssets(authUser: AuthUserDto, latestDate: string) {
+    return await this.assetRepository.find({
+      where: {
+        userId: authUser.id,
+        createdAt: MoreThan(latestDate),
+      },
+      order: {
+        createdAt: 'ASC', // ASC order to add existed asset the latest group first before creating a new date group.
+      },
+    });
+  }
 }

server/src/api-v1/asset/dto/get-asset.dto.ts

@@ -1,6 +1,6 @@
 import { IsNotEmpty } from 'class-validator';
 
-class GetAssetDto {
+export class GetAssetDto {
   @IsNotEmpty()
   deviceId: string;
 }

server/src/api-v1/asset/dto/get-new-asset-query.dto.ts

@@ -0,0 +1,6 @@
+import { IsNotEmpty } from 'class-validator';
+
+export class GetNewAssetQueryDto {
+  @IsNotEmpty()
+  latestDate: string;
+}