RecommendationController.java
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package com.srh.api.controller;
import com.srh.api.algorithms.structure.RecommendationsByUser;
import com.srh.api.dto.resource.RecommendationDto;
import com.srh.api.dto.resource.RecommendationForm;
import com.srh.api.dto.resource.RecommendationUserDto;
import com.srh.api.hypermedia.RecommendationModelAssembler;
import com.srh.api.model.Recommendation;
import com.srh.api.service.RecommendationService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.web.PageableDefault;
import org.springframework.data.web.PagedResourcesAssembler;
import org.springframework.hateoas.EntityModel;
import org.springframework.hateoas.PagedModel;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import javax.transaction.Transactional;
import javax.validation.Valid;
import java.util.ArrayList;
import java.util.List;
import static com.srh.api.dto.resource.RecommendationDto.convert;
@RestController
@RequestMapping("/recommendations")
public class RecommendationController {
@Autowired
private RecommendationService recommendationService;
@Autowired
private RecommendationModelAssembler recommendationModelAssembler;
@Autowired
private PagedResourcesAssembler<RecommendationDto> pagedResourcesAssembler;
@GetMapping
public PagedModel<EntityModel<RecommendationDto>> listAll(@PageableDefault(page = 0, size = 5)
Pageable pageInfo) {
Page<Recommendation> recommendations = recommendationService.findAll(pageInfo);
return pagedResourcesAssembler.toModel(convert(recommendations));
}
@GetMapping("/{id}")
public EntityModel<RecommendationDto> find(@PathVariable Integer id) {
Recommendation recommendation = recommendationService.find(id);
return recommendationModelAssembler.toModel(new RecommendationDto(recommendation));
}
@PostMapping
public ResponseEntity<List<RecommendationUserDto>> generateRecommendations(
@RequestBody @Valid RecommendationForm form) {
List<RecommendationsByUser> recommendations = recommendationService.generateRecommendation(form);
List<RecommendationUserDto> recommendationUserDtos = new ArrayList<>();
for (RecommendationsByUser recommendationByUser : recommendations) {
recommendationUserDtos.add(new RecommendationUserDto(recommendationByUser));
}
return ResponseEntity.ok(recommendationUserDtos);
}
@DeleteMapping("/{id}")
@Transactional
public ResponseEntity<Void> delete(@PathVariable Integer id) {
recommendationService.delete(id);
return ResponseEntity.noContent().build();
}
@GetMapping("/performances/{algorithmId}")
public ResponseEntity<Page<RecommendationDto>> listRecommendationsPerformance(
@PathVariable Integer algorithmId, Pageable pageInfo) {
Page<Recommendation> recommendations = recommendationService.listRecommendationsByAlgorithm(
algorithmId, pageInfo
);
return ResponseEntity.ok(RecommendationDto.convert(recommendations));
}
@GetMapping("/matrices/{matrixId}")
public ResponseEntity<Page<RecommendationDto>> listRecommendationsMatrix(
@PathVariable Integer matrixId, Pageable pageInfo) {
Page<Recommendation> recommendations = recommendationService.listRecommendationsByMatrixId(
matrixId, pageInfo);
return ResponseEntity.ok(RecommendationDto.convert(recommendations));
}
@GetMapping("/tags/{tagId}")
public ResponseEntity<Page<RecommendationDto>> listRecommendationsByTag(
@PathVariable Integer tagId, Pageable pageInfo
) {
Page<Recommendation> recommendations = recommendationService.listRecommendationsByTag(tagId, pageInfo);
return ResponseEntity.ok(RecommendationDto.convert(recommendations));
}
}