/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.common;

import org.elasticsearch.core.Booleans;
import org.elasticsearch.test.ESTestCase;

import static org.hamcrest.Matchers.is;

public class BooleansTests extends ESTestCase {
    private static final String[] NON_BOOLEANS = new String[] {
        "11",
        "00",
        "sdfsdfsf",
        "F",
        "T",
        "on",
        "off",
        "yes",
        "no",
        "0",
        "1",
        "True",
        "False" };
    private static final String[] BOOLEANS = new String[] { "true", "false" };

    public void testIsBoolean() {
        for (String b : BOOLEANS) {
            String t = "prefix" + b + "suffix";
            assertTrue("failed to recognize [" + b + "] as boolean", Booleans.isBoolean(t.toCharArray(), "prefix".length(), b.length()));
            assertTrue("failed to recognize [" + b + "] as boolean", Booleans.isBoolean(b));
        }
    }

    public void testIsNonBoolean() {
        assertThat(Booleans.isBoolean(null, 0, 1), is(false));

        for (String nb : NON_BOOLEANS) {
            String t = "prefix" + nb + "suffix";
            assertFalse("recognized [" + nb + "] as boolean", Booleans.isBoolean(t.toCharArray(), "prefix".length(), nb.length()));
            assertFalse("recognized [" + nb + "] as boolean", Booleans.isBoolean(t));
        }
    }

    public void testParseBooleanWithFallback() {
        assertFalse(Booleans.parseBoolean(null, false));
        assertTrue(Booleans.parseBoolean(null, true));
        assertNull(Booleans.parseBoolean(null, null));
        assertFalse(Booleans.parseBoolean(null, Boolean.FALSE));
        assertTrue(Booleans.parseBoolean(null, Boolean.TRUE));

        assertTrue(Booleans.parseBoolean("true", randomFrom(Boolean.TRUE, Boolean.FALSE, null)));
        assertFalse(Booleans.parseBoolean("false", randomFrom(Boolean.TRUE, Boolean.FALSE, null)));
    }

    public void testParseNonBooleanWithFallback() {
        for (String nonBoolean : NON_BOOLEANS) {
            boolean defaultValue = randomFrom(Boolean.TRUE, Boolean.FALSE);

            expectThrows(IllegalArgumentException.class, () -> Booleans.parseBoolean(nonBoolean, defaultValue));
            expectThrows(
                IllegalArgumentException.class,
                () -> Booleans.parseBoolean(nonBoolean.toCharArray(), 0, nonBoolean.length(), defaultValue)
            );
        }
    }

    public void testParseBoolean() {
        assertTrue(Booleans.parseBoolean("true"));
        assertFalse(Booleans.parseBoolean("false"));
    }

    public void testParseNonBoolean() {
        expectThrows(IllegalArgumentException.class, () -> Booleans.parseBoolean(null));
        for (String nonBoolean : NON_BOOLEANS) {
            expectThrows(IllegalArgumentException.class, () -> Booleans.parseBoolean(nonBoolean));
        }
    }

    public void testParseBooleanLenient() {
        assertThat(Booleans.parseBooleanLenient(randomFrom("true", "TRUE", "True"), randomBoolean()), is(true));
        assertThat(Booleans.parseBooleanLenient(randomFrom("false", "FALSE", "anything"), randomBoolean()), is(false));
        assertThat(Booleans.parseBooleanLenient(null, false), is(false));
        assertThat(Booleans.parseBooleanLenient(null, true), is(true));
    }
}