/*
 * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package jakarta.jsonp.tck.api.patchtests;

import jakarta.jsonp.tck.api.common.TestResult;
import jakarta.json.Json;
import jakarta.json.JsonArray;
import jakarta.json.JsonObject;
import jakarta.json.JsonPatchBuilder;

import static jakarta.jsonp.tck.api.common.SimpleValues.*;

// $Id$
/**
 * RFC 6902: JavaScript Object Notation (JSON) Patch compatibility tests.<br>
 * {@see <a href="https://tools.ietf.org/html/rfc6902">RFC 6902</a>}.
 * <p>
 * Implements
 * {@see <a href="https://tools.ietf.org/html/rfc6902#section-4.5">RFC 6902:
 * 4.5. copy</a>} tests.
 */
public class PatchOperationCopy extends CommonOperation {

  /** Tested operation name. */
  private final String OPERATION = "COPY";

  /**
   * Creates an instance of RFC 6902 replace operation test.
   */
  PatchOperationCopy() {
    super();
  }

  /**
   * Test RFC 6902 COPY operation. Suite entry point.
   * 
   * @return Result of all tests in this suite.
   */
  TestResult test() {
    final TestResult result = new TestResult("RFC 6902 copy operation");
    System.out.println("Testing RFC 6902 copy operation:");
    testCopyStringOnSimpleObject(result);
    testCopyStringOnSimpleArray(result);
    testCopyIntOnSimpleObject(result);
    testCopyIntOnSimpleArray(result);
    testCopyBoolOnSimpleObject(result);
    testCopyBoolOnSimpleArray(result);
    testCopyObjectOnSimpleObject(result);
    testCopyObjectOnSimpleArray(result);
    testCopyStringOnCompoundObject(result);
    testCopyOfNonExistingLocationInObject(result);
    testCopyOfNonExistingLocationInArray(result);

    return result;
  }

  /**
   * Test RFC 6902 COPY operation for {@code String} on simple JSON object.
   * 
   * @param result
   *          Tests result record.
   */
  private void testCopyStringOnSimpleObject(final TestResult result) {
    System.out.println(" - for String on simple JSON object");
    final JsonObject in = createSimpleObjectStr();
    final JsonObject check = createSimpleObjectCopyStr();
    simpleOperation(result, in, check, STR_PATH, DEF_PATH);
  }

  /**
   * Test RFC 6902 COPY operation for {@code String} on simple JSON array.
   * 
   * @param result
   *          Tests result record.
   */
  private void testCopyStringOnSimpleArray(final TestResult result) {
    System.out.println(" - for String on simple JSON array of size 2");
    final JsonArray in = createStringArray2();
    simpleOperation(result, in, createStringArray2Copy1to0(), "/1", "/0");
    simpleOperation(result, in, createStringArray2Copy0to2(), "/0", "/2");
    simpleOperation(result, in, createStringArray2Copy0to1(), "/0", "/1");
  }

  /**
   * Test RFC 6902 COPY operation for {@code int} on simple JSON object.
   * 
   * @param result
   *          Tests result record.
   */
  private void testCopyIntOnSimpleObject(final TestResult result) {
    System.out.println(" - for int on simple JSON object");
    final JsonObject in = createSimpleObjectInt();
    final JsonObject check = createSimpleObjectCopyInt();
    simpleOperation(result, in, check, INT_PATH, DEF_PATH);
  }

  /**
   * Test RFC 6902 COPY operation for {@code int} on simple JSON array.
   * 
   * @param result
   *          Tests result record.
   */
  private void testCopyIntOnSimpleArray(final TestResult result) {
    System.out.println(" - for int on simple JSON array of size 2");
    final JsonArray in = createIntArray2();
    simpleOperation(result, in, createIntArray2Copy1to0(), "/1", "/0");
    simpleOperation(result, in, createIntArray2Copy0to2(), "/0", "/2");
    simpleOperation(result, in, createIntArray2Copy0to1(), "/0", "/1");
  }

  /**
   * Test RFC 6902 COPY operation for {@code boolean} on simple JSON object.
   * 
   * @param result
   *          Tests result record.
   */
  private void testCopyBoolOnSimpleObject(final TestResult result) {
    System.out.println(" - for boolean on simple JSON object");
    final JsonObject in = createSimpleObjectBool();
    final JsonObject check = createSimpleObjectCopyBool();
    simpleOperation(result, in, check, BOOL_PATH, DEF_PATH);
  }

  /**
   * Test RFC 6902 COPY operation for {@code boolean} on simple JSON array.
   * 
   * @param result
   *          Tests result record.
   */
  private void testCopyBoolOnSimpleArray(final TestResult result) {
    System.out.println(" - for boolean on simple JSON array of size 2");
    final JsonArray in = createBoolArray2();
    simpleOperation(result, in, createBoolArray2Copy1to0(), "/1", "/0");
    simpleOperation(result, in, createBoolArray2Copy0to2(), "/0", "/2");
    simpleOperation(result, in, createBoolArray2Copy0to1(), "/0", "/1");
  }

  /**
   * Test RFC 6902 COPY operation for {@code JsonObject} on simple JSON object.
   * 
   * @param result
   *          Tests result record.
   */
  private void testCopyObjectOnSimpleObject(final TestResult result) {
    System.out.println(" - for JsonObject on simple JSON object");
    final JsonObject in = createSimpleObjectObject();
    final JsonObject check = createSimpleObjectCopyObject();
    simpleOperation(result, in, check, OBJ_PATH, DEF_PATH);
  }

  /**
   * Test RFC 6902 COPY operation for {@code JsonObject} on simple JSON array.
   * 
   * @param result
   *          Tests result record.
   */
  private void testCopyObjectOnSimpleArray(final TestResult result) {
    System.out.println(" - for JsonObject on simple JSON array of size 2");
    final JsonArray in = createObjectArray2();
    simpleOperation(result, in, createObjectArray2Copy1to0(), "/1", "/0");
    simpleOperation(result, in, createObjectArray2Copy0to2(), "/0", "/2");
    simpleOperation(result, in, createObjectArray2Copy0to1(), "/0", "/1");
  }

  /**
   * Test RFC 6902 COPY operation for {@code String} on compound JSON object.
   * Copied value overwrites an existing value.
   * 
   * @param result
   *          Tests result record.
   */
  private void testCopyStringOnCompoundObject(final TestResult result) {
    System.out.println(" - for String on compound JSON object");
    final JsonObject in = createCompoundObject();
    final JsonObject check = createCompoundObjectCopyValue();
    simpleOperation(result, in, check, DEF_PATH, DEF_OBJ_PATH + DEF_PATH);
  }

  // Tests based on RFC 6902 definitions and examples.

  /**
   * Test RFC 6902 COPY operation for non existing location in object.
   * {@see <a href="https://tools.ietf.org/html/rfc6902#section-4.4">RFC 6902:
   * 4.5. copy</a>} defines:<br>
   * The "from" location MUST exist for the operation to be successful.
   */
  private void testCopyOfNonExistingLocationInObject(final TestResult result) {
    System.out.println(" - for non existing location in JsonObject");
    final JsonObject[] objsIn = new JsonObject[] { createEmptyObject(),
        createSimpleObject(), createCompoundObject() };
    final String[] paths = new String[] { STR_PATH, INT_PATH, BOOL_PATH,
        OBJ_PATH };
    final Object[] values = new Object[] { OBJ_PATH, BOOL_PATH, INT_PATH,
        STR_PATH };
    // Go trough all objects
    for (int i = 0; i < objsIn.length; i++) {
      // Go trough all paths
      for (int j = 0; j < paths.length; j++) {
        simpleOperationFail(result, objsIn[i], paths[j], values[i]);
      }
    }
  }

  /**
   * Test RFC 6902 COPY operation for non existing location in array.
   * {@see <a href="https://tools.ietf.org/html/rfc6902#section-4.4">RFC 6902:
   * 4.5. copy</a>} defines:<br>
   * The "from" location MUST exist for the operation to be successful.
   */
  private void testCopyOfNonExistingLocationInArray(final TestResult result) {
    System.out.println(" - for non existing location in JsonArray");
    final JsonArray[] arraysIn = new JsonArray[] { createEmptyArray(),
        createStringArray1(), createIntArray2(), createSimpleBoolArray5(),
        createObjectArray2() };
    final String[] paths = new String[] { "/", "/-1", "/-", "/5", "/0a", "/42",
        STR_PATH + "/0" };
    final Object[] values = new Object[] { "/0", "/1", "/2", "/5", "/1" };
    // Go trough all arrays
    for (int i = 0; i < arraysIn.length; i++) {
      // Go trough all paths
      for (int j = 0; j < paths.length; j++) {
        simpleOperationFail(result, arraysIn[i], paths[j], values[i]);
      }
    }
  }

  /**
   * Tested operation name {@code "COPY"}.
   * 
   * @return Operation name to be used in logs.
   */
  @Override
  protected String operationName() {
    return OPERATION;
  }

  /**
   * Create and initialize patch builder to contain COPY operation to be
   * applied.
   * 
   * @param path
   *          Source JSON path of COPY operation.
   * @param value
   *          Target JSON path of COPY operation. Must be instance of
   *          {@link String}.
   * @return Patch builder containing operation to be applied.
   */
  @Override
  protected JsonPatchBuilder createOperationBuilder(final String path,
      final Object value) {
    if (value instanceof String) {
      // System.out.println(" COPY "+path+" -> "+(String)value);
      return Json.createPatchBuilder().copy((String) value, path);
    } else {
      throw new IllegalArgumentException(
          "Argument \"value\" is not an instance of String");
    }
  }

  /**
   * Update patch builder to contain next COPY operation to be applied.
   * 
   * @param builder
   *          JSON patch builder to update.
   * @param path
   *          Source JSON path of COPY operation.
   * @param value
   *          Target JSON path of COPY operation. Must be instance of
   *          {@link String}.
   * @return Patch builder containing operation to be applied.
   */
  @Override
  protected JsonPatchBuilder updateOperationBuilder(
      final JsonPatchBuilder builder, final String path, final Object value) {
    if (value instanceof String) {
      // System.out.println(" COPY "+path+" -> "+(String)value);
      return builder.copy((String) value, path);
    } else {
      throw new IllegalArgumentException(
          "Argument \"value\" is not an instance of String");
    }
  }

}
