/*
 * MIT License
 *
 * Copyright (c) 2020-present Cloudogu GmbH and Contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
    
package sonia.scm.api.v2.resources;

import io.swagger.v3.oas.annotations.Operation;
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 sonia.scm.repository.Modifications;
import sonia.scm.repository.NamespaceAndName;
import sonia.scm.repository.api.RepositoryService;
import sonia.scm.repository.api.RepositoryServiceFactory;
import sonia.scm.web.VndMediaType;

import javax.inject.Inject;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;
import java.io.IOException;

public class ModificationsRootResource {

  private final RepositoryServiceFactory serviceFactory;
  private final ModificationsToDtoMapper modificationsToDtoMapper;

  @Inject
  public ModificationsRootResource(RepositoryServiceFactory serviceFactory, ModificationsToDtoMapper modificationsToDtoMapper) {
    this.serviceFactory = serviceFactory;
    this.modificationsToDtoMapper = modificationsToDtoMapper;
  }

  /**
   * Get the file modifications related to a revision.
   * file modifications are for example: Modified, Added or Removed.
   */
  @GET
  @Path("{revision}")
  @Produces(VndMediaType.MODIFICATIONS)
  @Operation(summary = "File modifications", description = "Get the file modifications related to a revision.", tags = "Repository")
  @ApiResponse(
    responseCode = "200",
    description = "success",
    content = @Content(
      mediaType = VndMediaType.MODIFICATIONS,
      schema = @Schema(implementation = ModificationsDto.class)
    )
  )
  @ApiResponse(responseCode = "401", description = "not authenticated / invalid credentials")
  @ApiResponse(responseCode = "403", description = "not authorized, the current user has no privileges to read the modifications")
  @ApiResponse(
    responseCode = "404",
    description = "not found, no changeset with the specified id is available in the repository",
    content = @Content(
      mediaType = VndMediaType.ERROR_TYPE,
      schema = @Schema(implementation = ErrorDto.class)
    ))
  @ApiResponse(responseCode = "500", description = "internal server error")
  public Response get(@PathParam("namespace") String namespace, @PathParam("name") String name, @PathParam("revision") String revision) throws IOException {
    try (RepositoryService repositoryService = serviceFactory.create(new NamespaceAndName(namespace, name))) {
      Modifications modifications = repositoryService.getModificationsCommand()
        .revision(revision)
        .getModifications();
      ModificationsDto output = modificationsToDtoMapper.map(modifications, repositoryService.getRepository());
      if (modifications != null ) {
        return Response.ok(output).build();
      } else {
        return Response.status(Response.Status.NOT_FOUND).build();
      }
    }
  }
}
