package org.cbioportal.web;

import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.media.ArraySchema;
import io.swagger.v3.oas.annotations.media.Content;
import io.swagger.v3.oas.annotations.media.Schema;
import io.swagger.v3.oas.annotations.responses.ApiResponse;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.validation.constraints.Max;
import jakarta.validation.constraints.Min;
import org.cbioportal.model.Gistic;
import org.cbioportal.service.SignificantCopyNumberRegionService;
import org.cbioportal.service.exception.StudyNotFoundException;
import org.cbioportal.web.config.annotation.InternalApi;
import org.cbioportal.web.parameter.Direction;
import org.cbioportal.web.parameter.HeaderKeyConstants;
import org.cbioportal.web.parameter.PagingConstants;
import org.cbioportal.web.parameter.Projection;
import org.cbioportal.web.parameter.sort.SignificantCopyNumberRegionSortBy;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@InternalApi
@RestController()
@RequestMapping("/api")
@Validated
@Tag(name = "Significant Copy Number Regions", description = " ")
public class SignificantCopyNumberRegionController {

    @Autowired
    private SignificantCopyNumberRegionService significantCopyNumberRegionService;

    @PreAuthorize("hasPermission(#studyId, 'CancerStudyId', T(org.cbioportal.utils.security.AccessLevel).READ)")
    @RequestMapping(value = "/studies/{studyId}/significant-copy-number-regions", method = RequestMethod.GET,
        produces = MediaType.APPLICATION_JSON_VALUE)
    @Operation(description = "Get significant copy number alteration regions in a study")
    @ApiResponse(responseCode = "200", description = "OK",
        content = @Content(array = @ArraySchema(schema = @Schema(implementation = Gistic.class))))
    public ResponseEntity<List<Gistic>> getSignificantCopyNumberRegions(
        @Parameter(required = true, description = "Study ID e.g. acc_tcga")
        @PathVariable String studyId,
        @Parameter(description = "Level of detail of the response")
        @RequestParam(defaultValue = "SUMMARY") Projection projection,
        @Parameter(description = "Page size of the result list")
        @Max(PagingConstants.MAX_PAGE_SIZE)
        @Min(PagingConstants.MIN_PAGE_SIZE)
        @RequestParam(defaultValue = PagingConstants.DEFAULT_PAGE_SIZE) Integer pageSize,
        @Parameter(description = "Page number of the result list")
        @Min(PagingConstants.MIN_PAGE_NUMBER)
        @RequestParam(defaultValue = PagingConstants.DEFAULT_PAGE_NUMBER) Integer pageNumber,
        @Parameter(description = "Name of the property that the result list is sorted by")
        @RequestParam(required = false) SignificantCopyNumberRegionSortBy sortBy,
        @Parameter(description = "Direction of the sort")
        @RequestParam(defaultValue = "ASC") Direction direction) throws StudyNotFoundException {

        if (projection == Projection.META) {
            HttpHeaders responseHeaders = new HttpHeaders();
            responseHeaders.add(HeaderKeyConstants.TOTAL_COUNT,
                significantCopyNumberRegionService.getMetaSignificantCopyNumberRegions(studyId).getTotalCount()
                    .toString());
            return new ResponseEntity<>(responseHeaders, HttpStatus.OK);
        } else {
            return new ResponseEntity<>(
                significantCopyNumberRegionService.getSignificantCopyNumberRegions(studyId, projection.name(), pageSize,
                    pageNumber, sortBy == null ? null : sortBy.getOriginalValue(), direction.name()), HttpStatus.OK);
        }
    }
}
