package kr.re.etri.autoflow.controllers;

import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.enums.ParameterIn;
import io.swagger.v3.oas.annotations.tags.Tag;
import kr.re.etri.autoflow.entity.DatasetEntity;
import kr.re.etri.autoflow.entity.ProjectEntity;
import kr.re.etri.autoflow.payload.request.BaseSearchRequest;
import kr.re.etri.autoflow.service.DatasetService;
import lombok.RequiredArgsConstructor;
import org.springdoc.core.annotations.ParameterObject;
import org.springframework.data.domain.Page;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import java.util.List;

@Tag(name = "데이터셋 API", description = "Dataset CRUD 기능 제공")
@CrossOrigin(origins = "*", maxAge = 3600)
@RestController
@RequestMapping("/api/datasets")
@RequiredArgsConstructor
public class DatasetController {

    private final DatasetService datasetService;

    @Operation(summary = "전체 데이터셋 목록 조회")
    @GetMapping
    public ResponseEntity<List<DatasetEntity>> getAllDatasets() {
        return ResponseEntity.ok(datasetService.findAll());
    }

    @Operation(summary = "ID로 데이터셋 조회")
    @GetMapping("/{id}")
    public ResponseEntity<DatasetEntity> getDatasetById(
            @Parameter(description = "조회할 데이터셋 ID", required = true, in = ParameterIn.PATH)
            @PathVariable("id") Long id) {

        return datasetService.findById(id)
                .map(ResponseEntity::ok)
                .orElse(ResponseEntity.notFound().build());
    }

    @Operation(summary = "검색 및 페이지네이션 데이터셋 목록 조회")
    @GetMapping("/search")
    public ResponseEntity<Page<DatasetEntity>> searchDatasets(
            @ParameterObject @ModelAttribute BaseSearchRequest request) {
        Page<DatasetEntity> page = datasetService.search(request);
        return ResponseEntity.ok(page);
    }

//    @Operation(summary = "데이터셋 생성 (Swagger 전용, 첨부파일 포함, DTO 미사용)")
//    @PostMapping(consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
//    public ResponseEntity<DatasetEntity> createDataset(
//            @Parameter(description = "데이터셋 이름", required = true)
//            @RequestParam("dsNm") String dsNm,
//            @Parameter(description = "데이터셋 설명", required = false)
//            @RequestParam(value = "dsDesc", required = false) String dsDesc,
//            @Parameter(description = "삭제 여부", required = false, example = "N")
//            @RequestParam(value = "delYn", required = false, defaultValue = "N") String delYn,
//            @Parameter(description = "등록 유저 ID", required = true)
//            @RequestParam("regUserId") String regUserId,
//            @Parameter(description = "등록 유저 이름", required = false)
//            @RequestParam(value = "regUserNm", required = false) String regUserNm,
//            @Parameter(description = "첨부파일", required = false)
//            @RequestPart(value = "files", required = false) List<MultipartFile> files
//    ) {
//        // Entity 생성
//        DatasetEntity dataset = DatasetEntity.builder()
//                .dsNm(dsNm)
//                .dsDesc(dsDesc)
//                .delYn(delYn)
//                .regUserId(regUserId)
//                .regUserNm(regUserNm)
//                .build();
//
//        // Service 호출 (Dataset 저장 + 첨부파일 업로드 처리)
//        DatasetEntity savedDataset = datasetService.createWithFiles(dataset, files);
//
//        return ResponseEntity.ok(savedDataset);
//    }


    @Operation(summary = "데이터셋 생성 + 첨부파일 업로드 (Swagger 전용)")
    @PostMapping(consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
    public ResponseEntity<DatasetEntity> createDatasetWithFiles(
            @Parameter(description = "데이터셋 이름", required = true)
            @RequestParam("dsNm") String dsNm,
            @Parameter(description = "데이터셋 설명", required = false)
            @RequestParam(value = "dsDesc", required = false) String dsDesc,
            @Parameter(description = "삭제 여부", required = false, example = "N")
            @RequestParam(value = "delYn", required = false, defaultValue = "N") String delYn,
            @Parameter(description = "등록 유저 ID", required = true)
            @RequestParam("regUserId") String regUserId,
            @Parameter(description = "등록 유저 이름", required = false)
            @RequestParam(value = "regUserNm", required = false) String regUserNm,
            @Parameter(description = "첨부파일", required = false)
            @RequestPart(value = "files", required = false) List<MultipartFile> files
    ) {
        DatasetEntity dataset = DatasetEntity.builder()
                .dsNm(dsNm)
                .dsDesc(dsDesc)
                .delYn(delYn)
                .regUserId(regUserId)
                .regUserNm(regUserNm)
                .build();

        DatasetEntity savedDataset = datasetService.createWithFiles(dataset, files);
        return ResponseEntity.ok(savedDataset);
    }


//
//    @Operation(summary = "데이터셋 생성")
//    @PostMapping
//    public ResponseEntity<?> createDataset(@RequestBody DatasetEntity dataset) {
//        try {
//            DatasetEntity saved = datasetService.create(dataset);
//            return ResponseEntity.ok(saved);
//        } catch (IllegalArgumentException e) {
//            return ResponseEntity.badRequest().body(e.getMessage());
//        }
//    }

//    @Operation(summary = "데이터셋 수정")
//    @PutMapping("/{id}")
//    public ResponseEntity<DatasetEntity> updateDataset(
//            @Parameter(description = "수정할 데이터셋 ID", required = true, in = ParameterIn.PATH)
//            @PathVariable("id") Long id,
//            @RequestBody DatasetEntity dataset) { // DTO 없이 엔티티 사용
//        return datasetService.update(id, dataset)
//                .map(ResponseEntity::ok)
//                .orElse(ResponseEntity.notFound().build());
//    }


    @Operation(summary = "데이터셋 삭제")
    @DeleteMapping("/{id}")
    public ResponseEntity<Void> deleteDataset(
            @Parameter(description = "삭제할 데이터셋 ID", required = true, in = ParameterIn.PATH)
            @PathVariable("id") Long id) {
        if (datasetService.delete(id)) {
            return ResponseEntity.noContent().build();
        }
        return ResponseEntity.notFound().build();
    }
}