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Operate Webapp

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/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH under
 * one or more contributor license agreements. See the NOTICE file distributed
 * with this work for additional information regarding copyright ownership.
 * Licensed under the Camunda License 1.0. You may not use this file
 * except in compliance with the Camunda License 1.0.
 */
package io.camunda.operate.webapp.rest.validation;

import static io.camunda.webapps.schema.entities.operation.OperationType.ADD_VARIABLE;
import static io.camunda.webapps.schema.entities.operation.OperationType.UPDATE_VARIABLE;

import io.camunda.operate.webapp.reader.OperationReader;
import io.camunda.operate.webapp.reader.VariableReader;
import io.camunda.operate.webapp.rest.dto.operation.CreateOperationRequestDto;
import io.camunda.operate.webapp.rest.exception.InvalidRequestException;
import java.util.Set;
import org.springframework.stereotype.Component;

@Component
public class CreateRequestOperationValidator {
  private final VariableReader variableReader;
  private final OperationReader operationReader;

  public CreateRequestOperationValidator(
      final VariableReader variableReader, final OperationReader operationReader) {
    this.variableReader = variableReader;
    this.operationReader = operationReader;
  }

  public void validate(
      final CreateOperationRequestDto operationRequest, final String processInstanceId) {
    if (operationRequest.getOperationType() == null) {
      throw new InvalidRequestException("Operation type must be defined.");
    }
    if (Set.of(UPDATE_VARIABLE, ADD_VARIABLE).contains(operationRequest.getOperationType())
        && (operationRequest.getVariableScopeId() == null
            || operationRequest.getVariableName() == null
            || operationRequest.getVariableName().isEmpty()
            || operationRequest.getVariableValue() == null)) {
      throw new InvalidRequestException(
          "ScopeId, name and value must be defined for UPDATE_VARIABLE operation.");
    }
    if (operationRequest.getOperationType().equals(ADD_VARIABLE)
        && (variableReader.getVariableByName(
                    processInstanceId,
                    operationRequest.getVariableScopeId(),
                    operationRequest.getVariableName())
                != null
            || !operationReader
                .getOperations(
                    ADD_VARIABLE,
                    processInstanceId,
                    operationRequest.getVariableScopeId(),
                    operationRequest.getVariableName())
                .isEmpty())) {
      throw new InvalidRequestException(
          String.format(
              "Variable with the name \"%s\" already exists.", operationRequest.getVariableName()));
    }
  }
}